Iseki Tractor TG6370 TG6400 TG6490 TG6620 TG6670 Operator's Manual - PDF DOWNLOAD

I S E K I

T R A C T O R S

O pe r at or ’s

M a n u al

MODELS:

TG6370 TG6620 TG6400 TG6670 TG6490 ENGLISH

TO OUR CUSTOMER

TO OUR CUSTOMER Thank you for purchasing an ISEKI tractor.

This operator’s manual provides the information necessary for operating and maintaining your tractor safely and properly.

The contents are mainly composed of the following 2 items: Safety instructions:

Essential items which you should observe while operating the tractor.

Technical instructions: Items which are necessary to operate, adjust and service the tractor properly.

Before starting to operate the machine for the first time, you should read this operator’s manual thoroughly and carefully until you are sufficiently familiar with the operation of the machine in order to do jobs safely and properly. The manual should be regarded as part of the machine, and should be kept in a handy place so you can refer to it when required. You are advised to refer to it from time to time to refresh your understanding of the machine.

Your dealer has performed the pre-delivery service on your new machine.

He or she will discuss with you the operating and maintenance instructions given in this manual, and instruct you in the proper and varied applications of this machine. Call on him or her at any time when you have a question, or need equipment related to the use of your machine.

Paragraphs in the manual and labels on the machine are particularly important information about safe operation to avoid accidents. You should always keep precautions in mind and follow them during operation.

Be sure to wear personal protective equipment during operation In some of the illustrations used in this operator’s manual, panels or guards may have been removed to clarity. Never operate the tractor with these panels and guards removed.

If the removal of a shield is necessary to make a repair, it must be replaced before operation.

If you use a trailer, use a proper one which suits your tractor. Using an improper trailer may cause serious accidents.

Never attempt to haul beyond the tractor’s capacity.

Follow strictly the instructions outlined in the operator’s manual of the mounted or trailed machinery or trailer, and do not operate the combination tractor – machine or tractor – trailer unless all instructions have been followed.

All information, illustrations, and specifications contained in this manual are based on the latest information available at the time of publication. The right is reserved to make changes at any time without notice.

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TABLE OF CONTENTS

TABLE OF CONTENTS OPERATION ............................................................ 30 INSTRUMENT PANEL ......................................... 34 Main Switch ...................................................... 34 Indicator Light Array ......................................... 35 Tachometer ...................................................... 36 Liquid Crystal Display ....................................... 36 Fuel Gauge....................................................... 36 Coolant Temperature Gauge ............................ 37 Gear Shift Display (Dual Clutch Type).............. 37 Engine Hourmeter ............................................ 37 Display Select Switch ....................................... 38 Traveling Speed Indication ............................... 38 Rear PTO Speed Indication ............................. 38 Mid PTO Speed Indication ............................... 38 Fault Code Indication ....................................... 39 Horn Switch & Lamp Switches ......................... 40 Emergency Engine Stop Switch (HST Type only) ............................................... 41 CLUTCH PEDAL (STANDARD TYPE ONLY) ...... 41 BRAKES ............................................................... 41 Brake Pedals ................................................... 41 Parking Brake Lever ......................................... 42 BREAK-IN PERIOD.............................................. 43 STARTING............................................................ 43 Pre-Start Inspection.......................................... 43 Normal Starting (Standard Type)...................... 44 Normal Starting (HST Type) ............................. 45 Normal Starting (Dual Clutch Type).................. 46 Restarting Warm Engine .................................. 47 Cold Weather Starting ...................................... 47 Warm Up Period ............................................... 47 Operator Observations ..................................... 48 Starting Circuit For The Engine ........................ 48 TRAVELING SPEED SELECTION (STANDARD TYPE) ............................................. 49 Engine Speed Control ...................................... 49 Forward / Reverse Lever .................................. 49 Shift Levers ...................................................... 50 Changing the Traveling Speed ......................... 50

TO OUR CUSTOMER ................................................ 1 TABLE OF CONTENTS ............................................. 3 SAFETY ..................................................................... 6 MACHINE PURPOSE ............................................ 6 PERSONAL SAFETY INSTRUCTIONS ................. 6 MAKING YOUR TRACTOR A SAFE VEHICLE ...... 7 How to Maintain Safety ...................................... 7 FOR SAFE OPERATION ....................................... 8 How to be a Safe Operator ................................ 8 When Another Person Operates Your Machine .............................................................. 8 Before Operation ................................................ 9 Starting Engine and Operating Tractor ............. 10 When Traveling ................................................ 10 Loading onto or Unloading from a Truck .......... 12 During Operation .............................................. 13 Inspection and Maintenance ............................ 14 Storage ............................................................. 15 Dismantling and Disposal ................................. 15 MAINTENANCE OF THE ELECTRIC SYSTEM............................................................... 16 To Maintain Electric Wiring ............................... 16 To Handle the Battery ....................................... 16 To Handle Booster Cables ............................... 17 SAFETY DECALS ................................................ 18 Maintenance of Safety Decals ......................... 21 Location of Safety Decals ................................ 22 INTRODUCTION ...................................................... 24 TRACTOR IDENTIFICATION .................................. 25 STATUTORY PLATE ........................................... 25 MODEL TYPE DESIGNATION ............................. 25 MODEL / SERIAL NUMBER ................................ 26 MAJOR COMPONENTS .......................................... 27 Rear ROPS Type.............................................. 27 Center ROPS Type........................................... 28 CABIN Type...................................................... 29

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TG6370, 6400, 6490, 6620, 6670 COMFORT ADJUSTMENTS ................................ 83 Steering Column Tilt ......................................... 83 Tool Box............................................................ 83 SEAT & SUSPENSION ADJUSTMENT ............... 84 COBO GT62 / M200 ......................................... 84 GRAMMER MSG83 / 521 ................................ 84 GRAMMER MSG93 / 521 ................................ 85 KAB XH2 / P6 ................................................... 85 FRONT LOADER FIXATION POINT .................... 86 FALLING OBJECTS PROTECTIVE STRUCTURE (FOPS) & OPERATORS PROTECTION STRUCTURE (OPS) FIXATION POINT ............... 86 Work with Crop Sprayers (Risk of Hazardous Substances) ...................... 86 TOWING ............................................................... 86 JACKING .............................................................. 87 EXTERNAL AUXILIARY POWER SUPPLY CONNECTOR ...................................................... 88 Auxiliary Power Supply Connector ................... 88 7 Pins Socket ................................................... 88 EDT CONNECTOR (TG6620 / 6670)............... 88

TRAVELING SPEED SELECTION (HST TYPE)......................................................... 52 Engine Speed Control ...................................... 52 Forward / Reverse Lever .................................. 52 Shift Lever ........................................................ 53 HST Pedal ........................................................ 53 Cruise Control .................................................. 54 Speed Adjustment ............................................ 55 HST Stage Selection (TG6490 / 6620 / 6670).. 55 TRAVELING SPEED SELECTION (DUAL CLUTCH TYPE)........................................ 56 Engine Speed Control ...................................... 56 Forward / Reverse Lever .................................. 56 Shift Levers ...................................................... 57 Changing the Traveling Speed ......................... 57 STOPPING TRACTOR (STANDARD TYPE) ....... 59 STOPPING TRACTOR (HST TYPE) .................... 60 STOPPING TRACTOR (DUAL CLUTCH TYPE) .. 61 DIFFERENTIAL LOCK ......................................... 62 4-WHEEL DRIVE.................................................. 62 POWER TAKE-OFF (PTO)................................... 63 Rear PTO Shaft ................................................ 63 Mid PTO Shaft .................................................. 64 PTO Switch & PTO Selectable Switch ............. 65 Rear PTO Selector Lever ................................. 66 Mid PTO Selector Lever ................................... 66 Rear PTO Operating Control ............................ 67 Mid PTO Operating Control .............................. 67 3-POINT LINKAGE ............................................... 68 Position Control (Standard & HST Types) ........ 68 Position Control (Dual Clutch Type) ................. 69 3-Point Linkage ................................................ 71 Attaching Implements ....................................... 73 Using Position Control ...................................... 74 Using Draft Control ........................................... 75 Detaching Implements ..................................... 76 DRAWBAR ........................................................... 76 JOYSTICK OPERATION ...................................... 77 Joystick Control Lever ...................................... 77 Joystick Lockout ............................................... 77 Joystick Operation ............................................ 78 EXTERNAL AUXILIARY HYDRAULICS ............... 79 External Auxiliary Hydraulics Lever .................. 79 Hydraulic Valves ............................................... 79 ROLL OVER PROTECTIVE STRUCTURE (ROPS) ................................................................. 80 Rear ROPS Type.............................................. 80 Center ROPS Type........................................... 80 REAR HITCH ....................................................... 81

INSTRUMENTS & CONTROLS & OPERATION - CABIN TYPE - ....................................................... 89 OPENING / CLOSING DOORS ........................... 90 LOCK / UNLOCK DOORS ................................... 90 REAR WINDOW................................................... 91 CORNER WINDOWS........................................... 92 ROOM LAMP ....................................................... 92 WORK LAMPS ..................................................... 93 WIPER AND WASHER SWITCH ......................... 94 WASHER RESERVOIR........................................ 95 AIR CONDITIONER OPERATION ....................... 95 Fan Speed Control Switch ............................... 95 Air Conditioner Button ...................................... 96 Temperature Adjustment Lever ........................ 96 Ventilation Control Lever .................................. 96 Air Vents ........................................................... 97 Using the Cooling System ................................ 98 Using the Heating System ................................ 98 Using the Defrosting System ............................ 98

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TABLE OF CONTENTS WHEELS & TIRES ............................................. 125 Tire Inflation Pressures .................................. 125 Wheel Bolt Torque .......................................... 125 Front Wheel Alignment ................................... 125 Front Wheel Spacing ...................................... 126 Rear Wheel Spacing ...................................... 126 Steering Free-Play ......................................... 128 Front Axle End-Float (4WD) ........................... 128 CLUTCH HOUSING PLUG ................................ 128 TORQUE CHART ............................................... 128 STORAGE .......................................................... 129 WASHING OF THE MACHINE........................... 130 MAJOR CONSUMABLES LIST ......................... 131 ROPS Type .................................................... 131 CABIN Type.................................................... 133

LUBRICATION & PERIODIC MAINTENANCE ....... 99 SPECIFICATIONS & CAPACITIES ...................... 99 LUBRICATION / FILL POINTS (TG6370 / 6400) ................................................. 100 LUBRICATION / FILL POINTS (TG6490 / 6620 /6670) ....................................... 101 PERIODIC INSPECTION AND MAINTENANCE TABLE ................................................................ 102 SERVICE ACCESS ............................................ 104 Opening / Closing Hood ................................. 104 Removing / Reinstalling Side Cover ............... 104 LUBRICATION DETAILS .................................... 105 Grease Fittings ............................................... 105 Engine Oil & Filter (TG6370 / 6400 / 6490) .... 105 Engine Oil & Filter (TG6620 / 6670) ............... 106 Transmission Oil & Filters .............................. 107 Front Axle Oil .................................................. 108 COOLING SYSTEM ........................................... 109 Checking / Replenishing Coolant ................... 109 Flushing Radiator / Replacing Coolant ........... 109 Use of Anti-Freeze.......................................... 110 Cleaning of Radiator ...................................... 110 Fan Belt .......................................................... 111 ENGINE AIR CLEANER ..................................... 112 Cleaning Air Cleaner / Vacuator Valve .......... 112 FUEL SYSTEM (TG6370 / 6400 / 6490) ............ 113 Fuel Filter ....................................................... 113 Air-Bleeding Fuel System ............................... 114 Fuel Tank Filler Cap ....................................... 114 Throttle Lever ................................................. 114 FUEL SYSTEM (TG6620 / 6670) ....................... 115 Fuel Filter ....................................................... 115 Air-Bleeding Fuel System ............................... 116 Fuel Tank Filler Cap ....................................... 116 Throttle Lever ................................................. 116 ELECTRICAL SYSTEM...................................... 117 Battery ............................................................ 117 Safety Switches .............................................. 119 Wiring / Fuse Arrangement............................. 119 Fuse Location (Standard Type) ...................... 120 Fuse Location (TG6400 / 6490 HST Type & Dual Clutch Type) ...................... 121 Fuse Location (TG6620 / 6670) ..................... 122 Fuse Location (Cabin Type) ........................... 123 CLUTCH FREE-PLAY ADJUSTMENT ............... 124 BRAKE ADJUSTMENT ...................................... 124

TROUBLESHOOTING ........................................... 135 ENGINE.............................................................. 135 CLUTCH ............................................................. 136 BRAKES ............................................................. 136 HYDRAULIC SYSTEM ....................................... 137 STEERING SYSTEM ......................................... 137 ELECTRICAL SYSTEM...................................... 137 HST SYSTEM (HST TYPE ONLY) ..................... 138 FAULT CODE LIST............................................. 138 SPECIFICATIONS.................................................. 139 ENGINE.............................................................. 139 TRANSMISSION ................................................ 140 POWER TAKE OFF (PTO) ................................. 140 HYDRAULIC SYSTEM ....................................... 141 ELECTRICAL SYSTEM...................................... 141 CAPACITIES ...................................................... 142 TREAD WIDTH SETTING .................................. 142 GENERAL DIMENSIONS................................... 143 Rear ROPS Type............................................ 143 Center ROPS Type......................................... 145 CABIN Type.................................................... 146 AXLE LOADS & TIRE LOAD CARRYING CAPACITY .......................................................... 149 NOISE DECLARATION ...................................... 149 VIBRATION DECLARATION (78 / 764 / EEC) ... 150 FRONT WEIGHT ................................................ 150 ATTACHMENT (OPTION) .................................. 150 INDEX..................................................................... 152 WIRING DIAGRAM ............................................... 155

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TG6370, 6400, 6490, 6620, 6670

SAFETY MACHINE PURPOSE This machine is designed solely for use in customary agricultural and forestry use, for parks and grounds maintenance, as well as for winter service. Use in any other way is considered as contrary to the intended use. Compliance with and strict adherence to the conditions of operation, service, and repair as specified by the manufacturer, also constitute essential elements of the intended use. This machine should be operated, serviced, and repaired only by persons who are familiar with its particular characteristics and who are acquainted with the relevant safety procedures. Accident prevention regulations, all other generally recognized regulations on safety and occupational medicine, and all road traffic regulations must be observed at all times. Any arbitrary modifications carried out to this machine may relieve the manufacturer of liability for any resulting damage or injury.

PERSONAL SAFETY INSTRUCTIONS Whenever you see the words and symbols below, used in this operator’s manual and on decals, you MUST take note of their instructions as they relate to personal safety.

DANGER: This symbol together with the word DANGER indicates an imminently hazardous situation that, if not avoided, will result in DEATH OR VERY SERIOUS INJURY. WARNING: This symbol together with the word WARNING indicates a potentially hazardous situation that, if not avoided, could result in DEATH OR VERY SERIOUS INJURY. CAUTION: This symbol together with the word CAUTION is used to indicate a potentially hazardous situation that, if not avoided, may result in MINOR INJURY. IMPORTANT: The word IMPORTANT is used to identify special instruction or procedures which, if not strictly observed, could result in damage to, or destruction of the machine, process or its surrounding.

NOTE: The word NOTE is used to indicate points of particular interest for more efficient and convenient repair or operation.

Understand thoroughly the following precautions, always keep them in mind before, during, and after operation, and never take chances.

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SAFETY MAKING YOUR TRACTOR A SAFE VEHICLE How to Maintain Safety (1) Never attempt to do the following: • Modification of the structure of the tractor • Installation of other type of engine • Installation of tires of other than the original tire size.

Any malfunctions or failures of the tractor due to unauthorized modification are not covered by the warranty.

(2) This machine cannot be driven on a public road without authorization by a local government agency, etc.

When transporting an unauthorized machine on a public road, load it on a truck.

When traveling with an implement wider than the tractor, put red caution markers such as flags (red lamps at night) in the most visible locations on both sides of the implements, and place a “SLOW MOVING VEHICLE” sign in a place where it is easily seen by other drivers. Operate the machine carefully keeping in mind that the implement is wider and may roll easily. If the implement can be folded, fold it beforehand. If there are road or railway crossings where the visibility is poor, you should install on the machine a mirror to give a view ahead of you so that you do not need to move your machine too far into the intersection.

(3) When you travel on a road, you must turn work lights off if the law requires it.

FIG. 1

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TG6370, 6400, 6490, 6620, 6670 FOR SAFE OPERATION How to be a Safe Operator (1) Familiarize yourself fully with machine controls by studying the operator’s manual before using your machine.

This operator’s manual should be regarded as part of the machine. Suppliers of both new and second-hand machines are advised to retain documentary evidence that this manual was provided with the machine.

(2) Never allow persons listed below to operate the machine.

If any work carried out by unauthorized persons as below would cause accident of the machine.

• Persons with mental disease • Persons who cannot operate the machine properly because of fatigue, illness, or drowsiness from medication, etc.

• Pregnant women • Young persons or children too young to legally operate the machine.

Always be careful of your health by taking suitable rest breaks.

(3) Wear appropriate clothing and other protective devices during operation.

• Protection of your head Wear protective headgear such as a helmet, especially when traveling on roads or handling material above your head.

• Protection to avoid being caught in the machine.

Wear tight fitting clothing and headgear, because loose clothing or hair can get caught in the moving parts of the machine.

• Protection from poisonous dust or gases Be sure to wear a protective device to protect the respiratory system, eyes, and skin when handling poisonous chemicals on work with such a crop sprayer, mounted or trailed.

• Protection of the ears Wear ear plugs or take suitable countermeasures to protect your ears when you must operate the machine under extremely noisy conditions.

• Maintenance of protective devices Periodically inspect protective devices to assure that they are functioning properly. Use them at all times.

FIG. 2

FIG. 3

FIG. 4

When Another Person Operates Your Machine When another person operates your machine, you must explain how to operate and instruct him or her to read this manual fully to avoid unexpected accident.

FIG. 5

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SAFETY Before Operation (1) Set up an operation plan with sufficient time allowance. A tight plan may result in unexpected accidents when work has to be rushed.

(2) Inspect and service the machine periodically in accordance with the instructions given in the operator’s manual to maintain the machine in the best condition.

Pay special attention to the controls, especially to the brakes and clutch, and safety measures for the machine when servicing it. If the machine functions properly and performs normally, the chance of an accident will be reduced greatly.

If safety devices are damaged or do not work, please consult your ISEKI dealer.

(3) Before removing a safety devices, such as a safety cover, be sure that the machine has stopped completely. Never forget to replace the removed part after servicing.

(4) Never refill fuel while the engine is running or it is still hot. Keep away from open fires and never smoke around a fuel tank or while fueling into the machine. Never use open flames for illumination when fueling the machine at night.

FIG. 6

FIG. 7

FIG. 8

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TG6370, 6400, 6490, 6620, 6670 Starting Engine and Operating Tractor (1) Before starting the engine indoors, make sure that there is proper ventilation because exhaust fumes contain poisonous carbon monoxide, which cause lethal poisoning.

(2) Before starting the machine, confirm that the transmission gear has been shifted to the appropriate speed, that there is no one near the machine, and that the implement is securely installed on the machine.

Always operate the machine from the operator’s seat. Never leave the seat except in an emergency when operating the machine.

(3) Before starting to move, pay attention to safety conditions around the machine to avoid injury to bystanders or damage to property. Never move abruptly.

FIG. 9

FIG. 10 When Traveling (1) Following are cases that the tractor may fall over, but all cases is not covered in these cases.

• When you travel on roads, latch the brake pedals, 1, together by using interlocking plate, 2, or the tractor may overturn by 1 wheel locking.

• When you travel on roads, ensure the differential lock is off.

• Do not make sharp turns when operating at high speed or for transportation.

• Do not make sharp turns on a slope.

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1 FIG. 11

FIG. 12

10

SAFETY (2) When traveling in a hill, drive the tractor carefully.

• When climbing up a hill, shift the speed change lever to the most suitable speed. Start moving the tractor as slowly as possible.

• While climbing up a hill, never shift speeds along the way.

• When starting to move the tractor on an up-hill slope, be sure that the front wheels do not lift up.

• When going down a hill, drive the tractor at slower speed than used to climb up the hill.

• While going down a hill, never shift into neutral, and never try to control the speed only with the brakes; use the engine brake effectively.

(3) When operating on poor footing such as a rough road, a slope, a road along a ditch or river, or undeveloped land, drive the tractor at low speeds and operate it carefully.

(4) When traveling on a road where one or both shoulders are slanted and which run along a ditch, look out for softened shoulders especially when the ditch is full of water and be careful not to let the machine slip sideway.

(5) Never allow other persons to get on the machine or the implement except when the machine or the implement is provided with a seat or a platform for persons to sit or stand on, and only within the capacity specified.

Never allow persons to get on the implement while traveling on roads.

(6) When parking the tractor, you have to park it on hard, level ground and provide sufficient safety measures by grounding the implement, removing the key, applying the parking brakes, and chocking the wheels securely.

(7) Keep inflammable away from the engine during operation. Especially during stationary operation do not operate the engine at high speeds so as not to set fire to grass or straw with a heated exhaust pipe or exhaust fumes.

(8) When you have to operate the tractor at night, make sure of the location of the controls. If not, the tractor might work unexpectedly by mistake.

FIG. 13

FIG. 14

FIG. 15

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TG6370, 6400, 6490, 6620, 6670 Loading onto or Unloading from a Truck (1) When loading the tractor onto a truck or a trailer, turn off the truck’s engine and apply the parking brakes to the truck or the trailer.

Otherwise, the truck could move and the tractor falls to the ground.

(2) Pay sufficient attention to the safety conditions around the tractor and have it guided by someone to assist the operation. Never allow other persons to approach the tractor, especially in front of or behind it.

(3) When loading or unloading the machine on / off a truck, set slip-proof ramps at the same angles and drive the tractor straight at sufficiently slow speeds.

Loading the tractor in reverse travel and unloading it in forward travel.

(4) Never depress the brake pedal during loading or unloading operation, or the tractor may shift sideways, which may cause it to fall of the ramps.

(5) If the engine stalls unexpectedly on the ramps, depress the brake pedal immediately and roll the tractor to the ground by manipulating the brake pedal. Start the engine on the ground and try again.

(6) When the machine is loaded on the truck, stop the engine, apply parking brakes, and withdraw the starter key, chock the wheels, and rope it securely to the truck. During transportation, do not make sharp turns needlessly so as not to shift the loaded tractor.

(7) Use ramps with the same or better specifications mentioned below. When the machine is equipped with attachments, consult your ISEKI dealer for advice.

FIG. 16

Specifications of the Ramps • Length.....more than 4 times the height of the platform of the truck • Width (effective width).....more than 35 cm • Capacity (1 ramp).....more than 1700 kg • Ramps should have anti-skid surfaces (8) Hook the ramps securely on the platform of the truck with the top of the ramp level with the platform.

(9) Always prepare for even the worst, by never allowing other persons near the tractor.

(10) Drive the tractor carefully at the moment the tractor moves from the ramps onto the platform, for it changes angle abruptly.

FIG. 17

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SAFETY During Operation (1) During operation, never allow other persons in the vicinity of the tractor, because the tractor itself or flung pieces may cause injury.

(2) Pay attention to safety around the tractor to avoid injury to bystanders or damage to property. Especially when operating with other persons, use the horn to warn them.

(3) When crossing a ditch or a levee or when passing through soft land, drive the tractor slowly and straight so that it does not slip or overturn.

(4) Do not touch dangerous parts such as rotating parts, moving parts, hot parts (muffler, radiator, or engine, etc.), or electric parts (battery terminals and other live parts), or you may be injured seriously.

(5) If you use a trailer, use a proper one which suits your tractor. Using an improper trailer may cause serious accidents. Never attempt to haul beyond the tractor’s capacity. If you have a question, please consult your ISEKI dealer. Follow strictly the instructions outlined in the operator’s manual of the mounted or trailed machinery or trailer, and do not operate the combination tractor - machine or tractor - trailer unless all instructions have been followed.

(6) When moving the machine toward an implement for the purpose of installing the implement, never allow anyone to stand in between. When installing the implement on the machine, prepared to move away promptly in the event of an emergency.

The brakes should be applied securely during installation.

(7) When front loader is attached, be aware of the risk of falling object from the loader bucket. Wear protective headgear such as a helmet. You are advised to use Falling Objects Protective Structure (FOPS).

(8) In case of use of an agricultural tractor in a forestry application, pay special attention to the identified below hazards: • Toppling trees, primarily in case a rear mounted tree grab-crane is mounted at the rear of tractor.

• Penetrating objects in the operator’s enclosure, primarily in case a winch is mounted at the rear of tractor (e.g. snapping of winch cable).

Falling Objects Protective Structure (FOPS) and Operators Protection Structure (OPS) are not standard equipment.

When using FOPS or OPS, consult your ISEKI dealer concerning the fixation points on tractor for the FOPS or OPS.

FIG. 18

FIG. 19

FIG. 20

FIG. 21

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TG6370, 6400, 6490, 6620, 6670 Inspection and Maintenance (1) Never allow persons listed below to inspect and maintain the machine.

If any work carried out by unauthorized persons as below would affect the warranty on the machinery.

• Persons with mental disease • Persons who cannot inspect and maintain the machine properly because of fatigue, illness, or drowsiness from medication, etc.

• Young persons or children too young (2) When servicing the tractor or mounting or dismounting an implement, place the tractor on level, hard ground which is sufficiently illuminated, or unexpected accidents may occur.

(3) When servicing the tractor, follow the instructions listed below: • Stop the engine.

• Apply parking brakes.

• Disengage all PTO. • Place all gear shift levers in neutral.

• Remove the starter key.

• Lower the implement fully, if equipped.

If not, your hands or clothes may be caught or sandwiched between.

(4) When servicing the tractor, use proper tools. Using makeshift tools may lead to injuries or poor servicing, which may result in unexpected accidents during operation.

(5) The engine, muffler, radiator, etc. are very hot just after operation, so wait until they cool down sufficiently to avoid burns.

(6) Never remove the radiator cap while the engine is hot or running. Wait until the engine cools down and then relieve the radiator pressure by loosen the radiator cap. Carelessly pouring cooling water into the heated radiator can cause serious damage to the radiator and the engine. Careless removal of the radiator cap can cause serious injury because of overheated water vapor.

(7) Never fit unauthorized implements or attempt unauthorized modification.

(8) Be sure to reinstall the removed safety covers in place as exposed dangerous parts may cause serious injury.

(9) Avoid high-pressure fluids. Escaping fluid under pressure can penetrate the skin and cause serious injury, so keep hands and body away from pin holes and nozzles ejecting such fluids. Be sure to consult your ISEKI dealer about the hydraulic and fuel injection system trouble.

When checking for leaks, use a piece of cardboard or wood without fail. If any hydraulic fluid is injected accidentally into the skin, it must be removed within a few hours by a doctor familiar with this type of injury.

FIG. 22

14

SAFETY (10) When servicing wheels and tires, the tractor and / or implement must be supported on suitable blocks or stands. Not a hydraulic jack.

Do not attempt to service a tire unless you have the proper equipment and experience to perform the job. Have the work carried out by your ISEKI dealer or a qualified repair service.

When seating tire beads onto rims, never exceed the maximum inflation specifications specified on the tire. Inflation beyond this maximum pressure may break the bead, or even the rim, with dangerous, explosive force.

If tire have deep scratches, cuts or punctures, replace it by qualified personnel as soon as possible. Wear suitable protective clothing, gloves, eye / face protection.

FIG. 23

Storage (1) Never cover a hot machine just after operation with a tarpaulin or the like, or the heated engine and related parts may cause a fire.

(2) Before storing the tractor for a long period of time, disconnect the battery cables to prevent them, in case they are gnawed by a rat, from causing a short circuit, which may lead to a fire. When disconnecting the cables, disconnect the negative (-) cable first.

(3) Safe storage of dangerous objects • When storing dangerous implements, take appropriate safety measures to prevent accidents by covering with tarpaulin.

• Store fuel in a safe place with caution signs such as “PREVENT FIRE” or “INFLAMMABLE”.

• All inflammables must also be stored in a safe, fire-resistant location.

Dismantling and Disposal When the machine or its parts completes their useful life, consult your ISEKI dealer for dismantling and disposal. If you try to dismantle and dispose by yourself, be aware of the necessity of hazards and safety precautions.

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TG6370, 6400, 6490, 6620, 6670 MAINTENANCE OF THE ELECTRIC SYSTEM To Maintain Electric Wiring (1) When servicing the electric wiring, stop the engine without fail. Otherwise your hands or clothes may be caught in rotating parts.

(2) Before manipulating electric parts, be sure to disconnect the negative battery cable (-), otherwise you may get an electric shock or be injured by sparks.

(3) Loose electric terminals or connectors may not only lower electrical performance but also cause short circuit or leakage of electricity, which may lead to a fire. Promptly tighten up the electric terminals.

(4) Remove chaff or dust from the battery, wiring, muffler, or engine. Otherwise it could result a fire.

To Handle the Battery (1) When working around the battery, avoid smoking.

The battery generates explosive hydrogen and oxygen gases when it is being charged. Keep the battery away from sparks or open flames.

(2) Inspect the level of battery liquid before starting the engine. Be careful not to touch the electrolyte when removing the vent plugs. If the battery electrolyte makes contact with the skin or clothing, wash it off immediately with water and then consult a doctor.

(3) When replacing or inspecting the battery, stop the engine and turn the main switch off, or electrical parts may be damaged or unexpected accident may occur.

FIG. 24

16

SAFETY (4) When disconnecting the battery cables, disconnect the negative cable (-) first without fail. When connecting the battery cables, connect the positive cable (+) first. Disconnecting or connecting in wrong order may lead to a short circuit or sparks.

FIG. 25

FIG. 26 To Handle Booster Cables When using booster cables, pay attention to the following items for safe operation: (1) Before connecting cables, remove the vent plugs.

This will lower the force in case of explosion.

(2) Before connecting cables, be sure to stop the engine. Otherwise unexpected accidents may occur.

(3) Use booster cables with sufficient electrical capacity.

A cable of inadequate capacity will cause generation of heat, which may lead to a fire.

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TG6370, 6400, 6490, 6620, 6670 SAFETY DECALS

(5) Ether label (Code No.1674-904-002-1)

(1) Fan warning label (Code No. 1705-902-006-0)

WARNING: RISK OF EXPLOSION Ether or other starting fluid should never be used to start engines equipped with glow plugs.

WARNING: RISK OF ENTANGLEMENT Stay clear of the fan while it is running.

(2) Battery disconnecting label (Code No.1636-901-022-0)

(6) PTO label (Code No.8654-901-002-0)

WARNING: RISK OF ELECTRIC SHOCK When disconnecting the battery, detach the negative terminal first and attach the positive terminal first when connecting the battery.

WARNING: RISK OF ENTANGLEMENT Stay clear of the PTO shaft while the engine is running.

(3) Belt warning label (Code No.1674-904-008-0)

(7) Trailer label (Code No.1674-904-004-0)

WARNING: RISK OF ENTANGLEMENT Stay clear of the belt while it is running.

WARNING: RISK OF OVERTURN The rear implement should be installed on the tractor with an approved drawbar or by using the lower links of the 3-point hitch. Use only weight not exceeding the designed capability of the tractor.

(4) Hot part warning label (Code No.8595-901-007-0)

WARNING: HOT SURFACES, RISK OF BURNS ON HANDS AND FINGERS Stay clear of the heated parts until they cool down sufficiently.

18

SAFETY (8) Radiator label (Code No.1705-902-008-0)

E. WARNING: RISK OF EXPLOSION Never use the battery with the electrolyte surface below the “LOWER” limit, or it may explode.

Never replenish exceeding “UPPER” limit or electrolyte may leak out.

Maintenance free battery does not need to replenish distilled water.

F. WARNING: READ OPERATOR’S MANUAL Read the safety and operating instructions in the operator’s manual before operating the tractor. Take care of handling the battery. Improper handling may lead to explosion. Never short the poles. Charge the battery in a well ventilated place.

WARNING: HIGH PRESSURE STEAM AND HOT WATER Never remove the radiator cap during or just after operation. The water in the radiator is very hot and highly pressurized, which could cause burns.

(10) Starter warning label (Code No.1705-902-007-0)

(9) Battery label (Code No.1815-904-001-1) A

B

C

DANGER: RISK OF ELECTRIC SHOCK Start the engine only from the seat using the key.

(11) Operation caution label (Code No.1674-904-001-0) (ROPS type)

D

E

F

A. WARNING: RISK OF EXPLOSION Keep away from sparks or flames, which could cause explosion.

(Code No.1746-902-051-0) (CABIN type)

B. WARNING: WEAR AN EYE PROTECTION DEVICE Battery electrolyte (euphoric acid) may cause blindness. Wear an eye protector to prevent contact with the eyes.

C.WARNING: KEEP OUT OF REACH OF CHILDREN D.WARNING: RISK OF BURNS Battery electrolyte (sulphuric acid) may cause burns. Avoid contact with skin or clothing. In case of an accident, flush affected part immediately with plenty of water.

19

TG6370, 6400, 6490, 6620, 6670 (14-1) Reverse label (Standard type) (Code No.1815-902-005-0)

A. WARNING: BEFORE OPERATION Read the safety and operating instructions in the operator’s manual before operating the tractor.

B. WARNING: MAINTENANCE Do not service the tractor while the engine is running or hot, or while the tractor is in motion.

C.WARNING: RISK OF ABRUPT MOVING Before leaving the tractor unattached, apply the parking brake, lower the implement, turn off the engine and remove the starter key to avoid unexpected moving of the tractor.

D.WARNING: RISK OF INJURY OR DAMAGE Pay attention to safety around the machine to avoid injury to bystanders or damage to property.

E. WARNING: RISK OF OVERTURNING Never operate the tractor on a slope of over 10 degrees, or it could overturn.

F. WARNING: RISK OF INJURY OR DAMAGE Never allow other persons to get on the tractor or the implement.

Before moving tractor to reverse direction, be sure to reduce engine speed.

(14-2) Reverse label (HST type) (Code No.1815-902-006-0)

(12) Fuel label (Code No.1705-904-001-0)

Keep sparks, open flames, etc. away from the fuel tank.

No smoking!

(13) Warning: Stop the engine when replenishing fuel.

(Code No.1728-903-002-0)

Before moving tractor to reverse direction, be sure to reduce engine speed.

DANGER: RISK OF EXPLOSION AND BURNS Use only diesel fuel.

Before replenishing fuel, be sure to stop the engine and wait until the engine and heated parts cool down sufficiently.

20

SAFETY (14-3) Reverse label (Dual clutch type) (Code No.1815-902-032-0)

(16) Seat belt label (CABIN type) (Code No.1815-904-002-0)

WARNING: RISK OF INJURY Fasten the seat belt at all times.

Do not operate the tractor with a damaged or modified CABIN. (17) Lead is used in a battery.

(Code No.1728-903-003-0)

Before moving tractor to reverse direction, be sure to reduce engine speed.

(15) ROPS label (ROPS type) (Code No.1674-904-005-1) 17-1 There is a warning label on a battery.

17-2 CAUTION: RISK OF ENVIRONMENT Throw away a battery properly because lead is included in a battery. (Do not throw away a battery as the general garbage.)

Maintenance of Safety Decals The labels are stuck on the tractor. Of course, you should read the safety instructions in the manual. But never fail to read the labels on the machine as well.

• The labels should always be clearly seen, that is, nothing should obscure them.

• When they have become dirty, wash them with soapy water and wipe off with soft cloth.

• If any of them are torn or lost, order new labels from your ISEKI dealer. Their codes are mentioned in “SAFETY DECALS AND THEIR LOCATION”.

• A new label should be placed in the same place where the old one was located.

• When sticking on a new label, clean the place to enable the label to stick and squeeze out all air bubbles trapped under it.

WARNING: RISK OF INJURY Keep the ROPS in the upright position and fasten the seat belt at all times. Do not jump from the seat if the tractor starts to overturn, or you could be crushed under the tractor. The ROPS should usually be kept in the upright position during operation.

However, when the ROPS has to be lowered, do not wear the seat belt and operate the tractor with extreme caution.

Do not operate the tractor with a damaged or modified ROPS. 21

TG6370, 6400, 6490, 6620, 6670 Location of Safety Decals A

B

C

(2) 1636-901-022-0

(17) 1728-903-003-0 (5) 1674-904-002-1

(8) 1705-902-008-0 D

E

F

(9) 1815-904-001-1

(1) 1705-902-006-0 (1) 1705-902-006-0

(3) 1674-904-008-0

(3) 1674-904-008-0

(4) 8595-901-007-0

(10) 1705-902-007-0

(12) 1705-904-001-0

(13) 1728-903-002-0 (15) 1674-904-005-1 (Center ROPS)

(11) 1674-904-001-0 (ROPS type) (14-1) 1815-902-005-0 (Standard type) (6) 8654-901-002-0

(7) 1674-904-004-0 (14-2) 1815-902-006-0 (14-3) 1815-902-032-0 (15) 1674-904-005-1 (Rear ROPS) (HST type) (Dual clutch type)

Location of all instruction decals provided as a reference. Replace any decals that are damaged, missing or are not readable. Consult your dealer.

22

SAFETY (ONLY CABIN TYPE)

(11) 1746-902-051-0 (14-1) 1815-902-005-0 (Standard type)

(16) 1815-904-002-0 (14-2) 1815-902-006-0 (HST type) (14-3) 1815-902-032-0 (Dual clutch type) Location of all instruction decals provided as a reference. Replace any decals that are damaged, missing or are not readable. Consult your dealer.

23

TG6370, 6400, 6490, 6620, 6670

INTRODUCTION The information in this publication describes the operation, maintenance and servicing of the TG6370, 6400, 6490, 6620, 6670 tractors. Every effort has been made to provide correct and concise information to you, the operator, as available at date of book publication. Your dealer is available for further information about items in this operator’s manual or details of your machine not be understood.

This operator’s manual is supplied with each machine to familiarize the operator with proper instructions needed for operation and maintenance. Studying and adhering to these instructions will insure optimum machine performance and longevity. A machine that is maintained properly and operated in the intended manner will provide greater dividends than one that is neglected and / or operated in manner other than as intended. Design and servicing of this machine has been kept as simple as possible to permit maintenance operations to be carried out with tools normally available.

This operator’s manual should be thoroughly read and understood prior to operation of this machine. Your dealer can also assist in areas concerning machine operation and provide details concerning proper operation. It is suggested that this operator’s manual be kept readily accessible, preferably with the machine, for future reference if questions or concerns arise. If the original operator’s manual is damaged, consult your dealer in regards to acquiring a replacement.

The customer is strongly advised to use an official dealer in connection with any service problems and adjustments that may occur. The dealer network is specially trained and equipped for all service work and to advise customer on specific applications of the tractor in local conditions.

CAUTION: In some of the illustrations used in this operator’s manual, panels or guards may have been removed for clarity. Never operate the tractor with these panels and guards removed. If the removal of a shield is necessary to make a repair, it MUST be replaced before operation.

CAUTION: READ THIS OPERATOR’S MANUAL IN ITS ENTIRETY PRIOR TO OPERATING MACHINE. Use only ISEKI parts for repairs and / or replacement.

24

TRACTOR IDENTIFICATION

TRACTOR IDENTIFICATION STATUTORY PLATE FIGS. 27 & 28: Statutory plate, 1, located below operator’s seat. The statutory plate contains EU homologation information such as type, variant, EC number, identification number, total permissible mass, and permissible towable mass.

Standard & Dual Clutch Types

HST Type

TG6370SA

TG6

e13*2003/37*0345 TG6370000011 2310-2450 810-950 1500

1

1

2000 3500 5000 NA

FIG. 28

FIG. 27

MODEL TYPE DESIGNATION

TG6370

S

D W J

R

E4

Engine Symbol Horsepower TG6370 26.6 kW TG6400 28.7 kW TG6490 35.1 kW TG6620 44.7 kW TG6670 48.5 kW

H

Transmission Type Standard (Mechanical) Electronically

G

Dual Clutch

Symbol S

A

Symbol Type Omit None A Center ROPS D For high-hitch Symbol Destination E4 Europe

Controlled HST

Symbol ROPS / Cab R ROPS Cabin with CY A/C

Symbol Draft Control Omit None Draft Control D Symbol Omit M

Mid PTO None Mid PTO

Symbol J

Joystick Joystick

External Symbol Auxiliary Hydraulics Double W Valves 25

TG6370, 6400, 6490, 6620, 6670 MODEL / SERIAL NUMBER

Standard & Dual Clutch Types

Each tractor is identified by means of tractor model and serial numbers. As a further identification, engine and chassis are provided with identification numbers.

HST Type

2

2

To ensure prompt, efficient service when ordering parts or requesting repairs from authorized dealer, record these numbers in spaces provided.

FIGS. 29 & 30: Tractor identification plate, 2, located below operator’s seat. The tractor identification plate contains model / type names, and production year in addition to tractor serial number.

FIG. 29

TRACTOR MODEL / TYPE TG6370 SDWJRE4A

TRACTOR SERIAL NUMBER

000011 2014

FIG. 30 FIG. 31: Chassis number, 3, is punched on right side of front frame.

3

CHASSIS NUMBER

NOTE: Reference to left-hand and right-hand, used throughout this operator’s manual, refers to the position when seated in operator’s seat and facing forward.

FIG. 31

FIG. 32: (TG6370 / 6400 / 6490) Engine model number, 4, is cast on right side of engine block, below the injection pump. Engine serial number, 5, is punched on cylinder block, below engine model number.

TG6370 / 6400 / 6490

(TG6620 / 6670) The engine identification plate is riveted at the right-hand side of the engine, and contains engine model number, 4, and engine serial number, 5.

TG6620 / 6670

4 4

ENGINE MODEL NUMBER

5

ENGINE SERIAL NUMBER FIG. 32

26

5

MAJOR COMPONENTS

MAJOR COMPONENTS Rear ROPS Type

27

8

17

3

9

11

4

24

25 26 2 18

10 28 7

13 29

15

6

21

5

14

1

12

16

22

23 20

19

FIG. 33

FIG. 33: Identification and terminology of major components, as given in this operator’s manual, are as follows: 1. Front Wheels 2. Fuel Tank Filler 3. Check Chain 4. Lift Rod 5. Lower Link 6. Rear Wheels 7. Operator’s Seat 8. Instrument Panel 9. Steering Wheel 10. Fender 11. Reflector 12. Steering Cylinder 13. Hood 14. Front Grille 15. Battery

16. Front Hitch 17. Engine 18. Foot Step 19. Transmission 20. Front Wheel-Drive Shaft 21. Headlight 22. Front Axle 23. Front Axle Pivot 24. Lift Arm 25. Rear Axle 26. Drawbar 27. Direction Indicator Lamp & Position Lamp 28. Roll-Over Protective Structure (ROPS) 29. Mirror

27

TG6370, 6400, 6490, 6620, 6670 Center ROPS Type

8

17

11

3

9

24

4

25 26 2 18

28

13 15

10 28 7

29 6

21

5

27 1

14 12 23 22

20

16

19

FIG. 34 FIG. 34: Identification and terminology of major components, as given in this operator’s manual, are as follows:

16. Front Bumper 17. Engine 18. Foot Step 19. Transmission 20. Front Wheel-Drive Shaft 21. Headlight 22. Front Axle 23. Front Axle Pivot 24. Lift Arm 25. Rear Axle 26. Drawbar 27. Direction Indicator Lamp & Position Lamp 28. Roll-Over Protective Structure (ROPS) 29. Mirror

1. Front Wheels 2. Fuel Tank Filler 3. Check Chain 4. Lift Rod 5. Lower Link 6. Rear Wheels 7. Operator’s Seat 8. Instrument Panel 9. Steering Wheel 10. Fender 11. Reflector 12. Steering Cylinder 13. Hood 14. Front Grill 15. Battery

28

MAJOR COMPONENTS CABIN Type

29

3

17

27 11 24 4 25 2

26

10 18

30

8 13

15

9

6

28

21

7

5

14 12

16

22

23

1

20

19

FIG. 35 FIG. 35: Identification and terminology of major components, as given in this operator’s manual, are as follows: 1. Front Wheels 2. Fuel Tank Filler 3. Check Chain 4. Lift Rod 5. Lower Link 6. Rear Wheels 7. Operator’s Seat 8. Instrument Panel 9. Steering Wheel 10. Fender 11. Reflector 12. Steering Cylinder 13. Hood 14. Front Grille 15. Battery

16. Front Hitch 17. Engine 18. Foot Step 19. Transmission 20. Front Wheel-Drive Shaft 21. Headlight 22. Front Axle 23. Front Axle Pivot 24. Lift Arm 25. Rear Axle 26. Drawbar 27. Direction Indicator Lamp & Position Lamp (Front Side) 28. Direction Indicator Lamp & Position Lamp (Rear Side) 29. Cabin 30. Mirror

29

TG6370, 6400, 6490, 6620, 6670

OPERATION Standard Type

５

1 2

F

H

E

C

8

10

4 ３

11

16 17 15

13 6

14 9 23

12

22

19 20

21

７ 18 FIG. 36 FIG. 36: General layout and location of controls within operator’s area on tractor. Specific use of these controls is given later in this section and also in “Operation” section of this operator’s manual: 1. Steering Wheel 2. Forward / Reverse Lever 3. Parking Brake Lever 4. Clutch Pedal 5. Instrument Panel 6. Range Shift Lever 7. Rear Power Take-Off (PTO) Selector Lever 8. Hand Throttle Lever 9. Steering Column Tilt Pedal 10. Brake Pedals 11. Foot Throttle Pedal 12. Differential Lock Pedal

13. Gear Shift Lever 14. Position Control Lever 15. Draft Control Lever 16. Joystick Control Lever 17. Joystick Control Lever Lock 18. Operator’s Seat 19. 1st External Auxiliary Hydraulics Lever 20. 2nd External Auxiliary Hydraulics Lever 21. Mid Power Take-OFF (PTO) Selector Lever (Option) 22. 4-Wheel Drive (4WD) Shift Lever 23. PTO Switch

CAUTION: Become familiar with all operating controls prior to operating tractor.

Read this operator’s manual in its entirety before starting.

30

OPERATION HST Type (TG6400 / 6490)

4

1 2

21 F

H

E

C

7

9 ３

10

13 14

5 12 8 20

11

19

16 17

18

6 15 FIG. 37 FIG. 37: General layout and location of controls within operator’s area on tractor. Specific use of these controls is given later in this section and also in “Operation” section of this operator’s manual: 1. Steering Wheel 2. Forward / Reverse Lever 3. Parking Brake Lever 4. Instrument Panel 5. Range Shift Lever 6. Rear Power Take-Off (PTO) Selector Lever 7. Hand Throttle Lever 8. Steering Column Tilt Pedal 9. Brake Pedals 10. HST Pedal 11. Differential Lock Pedal

12. Position Control Lever 13. Joystick Control Lever 14. Joystick Control Lever Lock 15. Operator’s Seat 16. 1st External Auxiliary Hydraulics Lever 17. 2nd External Auxiliary Hydraulics Lever 18. Mid Power Take-OFF (PTO) Selector Lever 19. 4-Wheel Drive (4WD) Shift Lever 20. PTO Switch 21. Double Acting Lever

CAUTION: Become familiar with all operating controls prior to operating tractor.

Read this operator’s manual in its entirety before starting.

31

TG6370, 6400, 6490, 6620, 6670 HST Type (TG6620 / 6670)

4

1 2

21 F

H

E

C

7 9 ３

10

13 14

22 5 12 8 20

11

19

16 17

18

6 15 FIG. 38 FIG. 38: General layout and location of controls within operator’s area on tractor. Specific use of these controls is given later in this section and also in “Operation” section of this operator’s manual: 12. Position Control Lever 13. Joystick Control Lever 14. Joystick Control Lever Lock 15. Operator’s Seat 16. 1st External Auxiliary Hydraulics Lever 17. 2nd External Auxiliary Hydraulics Lever 18. Mid Power Take-OFF (PTO) Selector Lever 19. 4-Wheel Drive (4WD) Shift Lever 20. PTO Switch 21. Double Acting Lever 22. EDT Connector

1. Steering Wheel 2. Forward / Reverse Lever 3. Parking Brake Lever 4. Instrument Panel 5. Range Shift Lever 6. Rear Power Take-Off (PTO) Selector Lever 7. Hand Throttle Lever 8. Steering Column Tilt Pedal 9. Brake Pedals 10. HST Pedal 11. Differential Lock Pedal CAUTION: Become familiar with all operating controls prior to operating tractor.

Read this operator’s manual in its entirety before starting.

32

OPERATION Dual Clutch Type

５

1 2 F

H

E

C

8

10

4 ３

11

16

14 17

12 6 9

13

７ 22 23

21

24

25 19 20

15 18 FIG. 39 FIG. 39: General layout and location of controls within operator’s area on tractor. Specific use of these controls is given later in this section and also in “Operation” section of this operator’s manual: 1. Steering Wheel 2. Forward / Reverse Lever 3. Parking Brake Lever 4. Clutch Pedal 5. Instrument Panel 6. Range Shift Lever 7. Rear Power Take-Off (PTO) Selector Lever 8. Hand Throttle Lever 9. Steering Column Tilt Pedal 10. Brake Pedals 11. Foot Throttle Pedal 12. Differential Lock Pedal

13. Gear Shift Lever 14. Position Control Lever 15. Draft Control Dial 16. Joystick Control Lever 17. Joystick Control Lever Lock 18. Operator’s Seat 19. 1st External Auxiliary Hydraulics Lever 20. 2nd External Auxiliary Hydraulics Lever 21. Mid Power Take-OFF (PTO) Selector Lever 22. Up-Stop Switch 23. Reverse-Up Switch 24. 4-Wheel Drive (4WD) Switch 25. PTO Switch

CAUTION: Become familiar with all operating controls prior to operating tractor.

Read this operator’s manual in its entirety before starting.

33

TG6370, 6400, 6490, 6620, 6670 INSTRUMENT PANEL FIG. 40: Arrangement of gauges. Control switches and indicators located in instrument panel. Items are as follows:

4

3

1. Main Switch 2. Indicator Light Array 3. Tachometer 4. Liquid Crystal Display 5. Display Mode Switch 6. Hazard Warning Switch 7. Emergency Stop Switch (HST type only) 8. Direction Indicator Lamp Control Lever

6

2 8 7

1

5 FIG. 40

Main Switch FIG. 41: Main switch, 1, has the 4 following positions: OFF....... Tractor engine and all electrical circuits off.(except for headlamp, position lamp, rear registration plate lamp and hazard warning lamp) Turning main switch to OFF position will stop engine. Key can be removed.

ON........ Power supplied to all circuits. Normal operating position. Linkage on fuel injection pump moves (electrically) to the run position.

1

FIG. 41

GLOW... Energizes glow plugs to preheat the combustion chambers and assist starting.

START... Starter activated. This position is spring located to “ON” position.

NOTE: Main switch must be turned to “ON” before any circuits will operate. PTO switch must be off and gear shift lever in neutral before engine can be started.

This tractor is equipped with an electric fuel shut off. When main switch, 1, is turned to “start”, “on”, or “glow” position and gear shift lever is placed in neutral, a solenoid moves the fuel linkage on injection pump to run position to start engine. When main switch is turned to “off”, solenoid moves fuel linkage to off position to stop engine.

34

OPERATION Indicator Light Array FIG. 42: Bottom indicator light array, 1, and right-hand indicator light array, 2, contain several indicator lamps to monitor certain functions.

The lamps on the bottom indicator light array, 1, are as follows: •

Pre-heat Lamp - Illuminates after the switch is selected to the GLOW position for a maximum of 30 seconds. The lamp illuminates until the engine combustion chambers become enough temperature and the engine can be started.

•

Engine Oil Pressure Warning Lamp - Illuminates if engine oil pressure is low. If the lamp comes on while the engine is running, stop the engine immediately.

•

Battery Charge Lamp - Illuminates when the main switch is turned to the ON position and will go out after the engine starts, to indicate the battery is being charged.

•

Parking Brake Warning Lamp - Illuminates when parking brake is applied.

FIG. 42

The lamps on the right-hand indicator light array, 2, are as follows: •

•

Fuel Filter Warning Lamp - Illuminates when water is in the pre-fuel filter. (For only TG6620 / 6670) Coolant Temperature Warning Lamp - Illuminates when the engine is too hot. Reduce engine speed to idle. Allow the engine to run at no load for several minutes and find the cause of the problem. Refer to the Troubleshooting Section.

•

Rise Indicator Lamp - Illuminates when the implement is raising by using the position control lever. (For only dual clutch type)

•

4WD Indicator Lamp - Illuminates when 4WD is engaged by pulling 4WD drive shift lever.

•

Power Take Off (PTO) Drive Warning Lamp Illuminates when the PTO switch is moved to engage the PTO clutch (PTO operating). The lamp will go out when the PTO switch is moved to the OFF position.

•

2

1

Up-Stop Indicator Lamp - Illuminates when up-stop switch is ON position. (For only dual clutch type)

35

•

Reverse-Up Indicator Lamp - Illuminates when reverse-up switch is ON position. (For only dual clutch type)

•

Cruise Control Lamp - Illuminates when cruise control is engaged. (For only HST type)

•

Main (high) Beam Lamp - Illuminates when main (high) beam headlamp is selected by the direction indicator lamp control lever.

•

Trailer Indicator Lamp - Blink when turn switch is ON with connecting 7 pins socket to your trailer or when hazard warning switch is ON position.

•

Caution Lamp - Illuminates when vehicle ECU detects an abnormality. Also, LCD on the meter panel display the fault code from vehicle ECU.

•

High Speed Mode Indicator Lamp - Illuminates when high speed mode is selected. (For only TG 6490 / 6620 / 6670 HST type)

•

Mid PTO Drive Warning Lamp - Illuminates when the Mid PTO is operating with moving the PTO switch to ON position.

TG6370, 6400, 6490, 6620, 6670 Tachometer FIG. 43: Tachometer, 1, indicates engine speed in crank shaft revolutions per minute (min-1). Index is also provided to show rear PTO speed of 540 at approximately 2,400 - 2,500 engine revolution speed.

1 FIG. 43

Liquid Crystal Display FIG. 44: Liquid crystal display indicates operating information.

4

1

(1) Fuel gauge (2) Coolant temperature gauge (3) Engine hourmeter (4) Fault code and other information Traveling speed (HST type only) Rear PTO speed Mid-PTO speed (if equipped)

3 FIG. 44

Fuel Gauge FIG. 45: Fuel gauge, 1, uses a bar graph to indicate level of diesel fuel in fuel tank. The closer to bar are to full icon, 2, the more fuel is in the fuel tank.

So not let the fuel gauge reach the empty icon, 3.

2

1

NOTE: When refilling the fuel tank, use clean diesel fuel in the clean area. If run out of fuel, it will be required the air bleeding from fuel circuit.

Keep fuel tank full to minimize condensation of moisture to the fuel.

3

NOTE: If the tractor is on the slope, fuel gauge does not indicate correctly.

FIG. 45

CAUTION: DO NOT refill fuel tank while engine running or hot. Allow cooling period. DO NOT smoke near fuel tank. Clean up any spilled fuel.

36

2

OPERATION Coolant Temperature Gauge FIG. 46: Coolant temperature gauge, 1, uses a bar graph to indicate engine coolant temperature.

B

1

• (A) “C” - Shows too cool of a temperature for severe work. Let the engine warm up (bar graph in mid position) before applying a heavy load.

• (B) “H” - Shows the engine coolant is too hot.

Reduce engine speed to idle, allow to run at no load several minutes. Stop the engine and find the cause (refer to “Troubleshooting”).

A CAUTION: Do not service hot engine.

Allow to completely cool down before servicing or removing radiator cap.

FIG. 46

NOTE: When the engine is overheated, coolant temperature warning lamp, 2, illuminates.

Reduce engine speed to idle. Refer to the Troubleshooting Section.

Engine Hourmeter FIG. 47: Engine hourmeter, 1, is used to assist in maintenance intervals of the tractor. The most right end digit indicates 1/10 hour.

1

FIG. 47 Gear Shift Display (Dual Clutch Type) FIG. 48: Liquid crystal display shows the number of gear shift, 1.

1

NOTE : Only dual clutch type tractor shows traveling speed step on the L.C.D.

FIG. 48

37

2

TG6370, 6400, 6490, 6620, 6670 Display Select Switch FIG. 49: Liquid crystal display shows the traveling speed, rear PTO speed or Mid-PTO speed. To change the displays, push the display select switch, 1.

(1) Traveling Speed (HST and dual clutch types only) (2) Rear PTO Speed (3) Mid-PTO (If equipped) NOTE: When vehicle ECU detects an abnormality, L.C.D. shows fault code. The display can be selected in the order of traveling speed, rear PTO speed Mid-PTO speed and fault code by pushing the display select switch.

1 FIG. 49

NOTE: When ECU communication is error, display can not be selected.

1

Traveling Speed Indication FIG. 50: Liquid crystal display shows the traveling speed, 1.

When the tractor is not driving, the display shows “0.0 km/h”. When the tractor is driving, the display shows real traveling speed.

NOTE : Only HST and dual clutch type tractor indicates traveling speed on the display.

FIG. 50

Rear PTO Speed Indication

1

FIG. 51: Liquid crystal display shows the rear PTO speed, 1.

When rear PTO is operating, the display shows rear PTO revolution speed. When rear PTO revolution speed is 0 min-1, the display shows “0 n/min”.

Mid-PTO Speed Indication

FIG. 51

FIG. 52: Liquid crystal display shows the mid-PTO speed, 1.

1

When mid-PTO is operating, the display shows midPTO revolution speed. When mid-PTO revolution speed is 0 min-1, the display shows “0 n/min”.

NOTE : Only tractor equipped with mid-PTO indicates the mid-PTO speed on the display.

FIG. 52 38

OPERATION Fault Code Indication FIG. 53: Liquid crystal display shows the fault code for vehicle ECU when vehicle ECU detects an abnormality. Fault code is composed 2 codes, 1 and 2.

1

(1) Suspect Parameter Number (SPN) - system code for fault

3

NOTE : Suspect Parameter Number (SPN) for vehicle ECU is composed of 4 figures. When the L.C.D. shows the fault code, “T” is added to the left side of the SPN. A hyphen (-) is also added between thousand’s digit place and hundred’s digit place.

2

FIG. 53 (2) Failure Mode Indicator (FMI) - failure code for fault Refer to the “Troubleshooting” Section for fault code list. When the L.C.D. shows the fault code, consult your dealer.

NOTE : When vehicle ECU detects an abnormality, caution lamp, 3, will illuminate.

FIG. 54: The L.C.D. shows the CAN communication error, 4, when the CAN communication data from the vehicle ECU is not received for 5 seconds or more.

Consult your dealer.

4

FIG. 54

FIG. 55: When 2 or more fault codes are displayed, push the display select switch, 5, detected to change the indication.

After all fault codes are displayed, the display shows the blank. Then push the display select switch once again, the display will return the main indication.

5 FIG. 55

39

TG6370, 6400, 6490, 6620, 6670 Horn Switch & Lamp Switches FIG. 56: Horn, 1, will sound when center switch of the steering wheel is depressed.

FIG. 57:Direction indicator lamp control lever, 2, is equipped with a rotary switch. It has 3 operating positions:

F

H

E

C

• (A) OFF Position - Fully counterclockwise. All lights off.

1

• (B) 1st Position - Dipped (low) beam headlamps, position lamps and rear registration plate lamp turns on.

• (C) 2nd Position - Main (high) beam headlamps, position lamps and rear registration plate lamp turns on.

FIG. 56 Turn switch left-hand

3

NOTE: When 2nd position, main (high) beam, is selected on direction indicator lamp control lever, driving light lamp in the indicator light array will illuminate.

2 A

Operate turn switch handle, 3, in direction tractor is being turned. Left-hand side or right-hand side direction indicator lamps will operate as turn signal. Return switch to center position to cancel.

B

3 Turn switch right-hand

C

FIG. 57 FIG. 58: Press hazard warning switch, 4, to turn on hazard warning lamp. Both left-hand side and righthand side direction indicator lamps will operate at the same time.

4

CAUTION: Hazard warning lamp must be used any time tractor is driven on public road. Consult local agencies for other marking requirements.

FIG. 58 FIG. 59: Turn indicator / hazard warning lamps, 5, and trailer indicator lamp, 6, will operate with both left-hand side and right-hand side direction indicator lamps. This provides operator with easy indication of warning light selection.

5 6

FIG. 59 40

OPERATION Emergency Engine Stop Switch (HST Type Only) FIG. 60: To stop the engine and tractor in case of emergency, push the emergency engine stop switch, 1.

1

CAUTION: For your safety, depress the brake pedal and decrease the speed of tractor enough before pushing this switch.

FIG. 60 CLUTCH PEDAL (EXCEPT FOR HST TYPE) FIG. 61: Clutch pedal, 1, disengages engine power to the transmission when fully depressed, to permit engine starting, selecting / changing gears and stopping tractor movement. 4-wheel drive selection also requires clutch disengagement.

Slowly raising the pedal will engage clutch and start tractor moving in selected gear.

NOTE: Clutch pedal should be depressed quickly to prevent abnormal wear. Clutch pedal should be raised smoothly to prevent sudden movement.

DO NOT remain your foot on the clutch pedal.

1 FIG. 61

IMPORTANT: Clutch pedal free-play should be adjusted properly. Refer to “Maintenance” section.

BRAKES Brake Pedals FIG. 62: Left-hand side brake pedal, 1, and right-hand side brake pedal, 2, independently control the respective left and right wheel brakes, to assist in turning.

3

During traveling on road or operating at high speed, brake pedals must be latched together using interlocking plate, 3.

CAUTION: Do not use individual wheel brakes when traveling on roads or operating at high speed. Make sure brakes are adjusted evenly.

1

2 FIG. 62

41

TG6370, 6400, 6490, 6620, 6670 Parking Brake Lever WARNING: ALWAYS apply the parking brake before leaving from the tractor.

FIGS. 63, 64 & 65: The parking brake is applied on the tractor rear wheels. To engage the brake, pull upward the parking brake lever, 4. To release the parking brake, press the button on the end of the lever and push down the lever down.

Standard & HST Types

4

IMPORTANT: Release the parking brake before driving the tractor to prevent abnormal wear of brake.

NOTE : When the parking brake is applied, the parking brake warning lamp, 5, will illuminate.

(Refer to Fig.65) FIG. 63

Dual Clutch Type

1

FIG. 64

5

FIG. 65

42

OPERATION BREAK-IN PERIOD

STARTING

Operation of tractor within the first 50 hours can be a major factor in determining the performance and life of the engine and tractor:

Pre-Start Inspection Prior to daily operation of tractor, a few basic procedures should be followed to ensure tractor is in operating order to insure life and dependability:

• The engine may be operated at full speed but excessive load should be avoided. If engine begins to “lug”, operate in a lower gear to maintain higher engine speed.

• Make sure all safety shields are in place and secured properly.

• Make sure operator is instructed on correct and safe operation of tractor and related attachments or implements.

• Check coolant level and check engine, transmission and other oil levels frequently during break-in period. Watch for evidence of leakage of above fluids.

Replenish levels as required and repair any leaks that may have formed.

• Check coolant, engine oil and transmission oil levels and replenish as necessary.

• Check fan belt tension and adjust as required.

• Tighten any nuts, bolts, or screws that may have loosened and tighten as necessary. This is especially true of wheel retaining bolts. All fasteners on this tractor are metric.

• Make sure radiator, air intake screens and radiator screen are clear of debris to provide maximum engine cooling efficiency.

• Check operation of clutch, brake and throttle controls. All controls must be operated freely and adjusted correctly.

• Be observant of clutch pedal free-play adjustment and brake adjustment. And readjust as required.

Lining materials used on clutch and brake discs “bed in” in the first few hours of operation and may need for early and frequent readjustment.

• Conduct a general inspection of tires, tire pressure and wheel bolt torque. Observe for external signs of leakage and correct before operating tractor. Check steering for excessive looseness.

• Keep clean around fuel filler area and use correct grade fuel free from contamination.

• Check for adequate fuel supply. It is recommended fuel tank be filled following each day’s use to reduce condensation and provide full tank for next use.

• Initial oil and oil filter maintenance are required after first 50 hours use for engine. Subsequent change interval is every 200 hours for engine oil and every 300 hours for engine oil filter.

• Check operation of lights and warning flashers. If tractor is to be transported on public road, ensure slow-moving vehicle emblem is in place.

CAUTION: Proper maintenance practices cannot be over-emphasized. They are required for safe operation. Refer the page of “Lubrication and Maintenance” section for full details.

NOTE: Requirements may be varied on locally for used of warning flashers and slow moving vehicle emblem. Check local safety codes.

WARNING: Carefully read and understand the SAFETY section of this manual. Your life, and that of others, can be in danger during the starting of the tractor.

Always start and operate the engine in a well ventilated area.

If in an enclosed area, vent the exhaust to the outside.

DO NOT modify or tamper with the exhaust system.

43

TG6370, 6400, 6490, 6620, 6670 Normal Starting (Standard Type) CAUTION: Do not attempt to start the tractor unless seated in the operator’s seat.

Do not allow anyone on the tractor except for the operator.

３

FIGS. 66 & 67: To start the engine, proceed as follows: 1.

2.

3.

4.

5.

6.

F

H

E

C

14

1

9

Make sure latch the brake pedals, 1, and apply parking brake, 2.

Make sure the forward / reverse lever, 3, in the neutral position.

Make sure the range gear shift lever, 4, and main gear shift lever, 5, in the neutral position.

Make sure the rear PTO selector lever, 6,and mid PTO selector lever (if equipped), 7, are in the neutral position.

Make sure the PTO switch, 8, is in OFF position.

Fully depress the main clutch pedal, 9, to disengage the clutch.

2 11 5 12

10

4 8

7

CAUTION: When the operator seats in the operator’s seat, the gearshift lever must be in neutral and PTO switch must be OFF to actuate safety switches and permit operation of the starter motor.

6

FIG. 66

7.

Set the position control lever, 10, and draft control lever, 11, in the down position.

8. Turn the main switch, 12, to the “GLOW” position, 13, for 5-10 seconds.

9. Set the throttle lever, 14, at half to the fully open position.

10. Turn the main switch, 12, to the “ON” position, 15, for 1-2 seconds, and then turn to the “START” position, 16. Release the switch the moment engine starts.

11. Once the engine runs smoothly, set engine speed to approximately 1,500 min-1 to allow the engine and hydraulic system to warm up for several minutes.

DO NOT LOAD A COLD ENGINE.

13

16

12 15 FIG. 67

IMPORTANT:

Do not crank engine for more than 10 seconds at a time. Allow starter to cool at least 20 seconds before repeating procedure. Never turn main switch to “start” with engine running. Severe damage will result.

FIG. 68: Battery charge indicator lamp, 17, and engine oil pressure lamp, 18, in indicator light strip should go out when the engine starts. If either light remains lit, STOP ENGINE IMMEDIATELY and investigate cause of problem.

18

IMPORTANT: If engine will not start and run after several attempts, refer to “Maintenance” section in this operator’s manual and bleed any air that may be present in the fuel system.

FIG. 68 44

17

OPERATION Normal Starting (HST Type) CAUTION: Do not attempt to start the tractor unless seated in the operator’s seat.

Do not allow anyone on the tractor except for the operator.

３

F

H

E

C

12

FIGS. 69 & 70: To start the engine, proceed as follows: 1.

2.

3.

4.

5.

6.

1

Make sure latch the brake pedals, 1, and apply parking brake, 2.

Make sure the forward / reverse lever, 3, in the neutral position.

Make sure the range gear shift lever, 4 in the neutral position.

Make sure the rear PTO selector lever, 5,and mid PTO selector lever, 6, are in the neutral position.

Make sure the PTO switch, 7, is in OFF position.

Do not depress HST pedal, 8. The HST pedal must be in neutral position.

2

10

9

4 7

CAUTION: When the operator seats in the operator’s seat, the gearshift lever must be in neutral and PTO switch must be OFF to actuate safety switches and permit operation of the starter motor.

6

5 FIG. 69

7.

Set the position control lever, 9, in the down position.

8. Turn the main switch, 10, to the “GLOW” position, 11, for 5-10 seconds.

9. Set the throttle lever, 12, at half to the fully open position.

10. Turn the main switch, 10, to the “ON” position, 13, for 1-2 seconds, and then turn to the “START” position, 14. Release the switch the moment engine starts.

11. Once the engine runs smoothly, set engine speed to approximately 1,500 min-1 to allow the engine and hydraulic system to warm up for several minutes.

DO NOT LOAD A COLD ENGINE. IMPORTANT:

8

11

14

10 13 FIG. 70

Do not crank engine for more than 10 seconds at a time. Allow starter to cool at least 20 seconds before repeating procedure. Never turn main switch to “start” with engine running. Severe damage will result.

FIG. 71: Battery charge indicator lamp, 15, and engine oil pressure lamp, 16, in indicator light strip should go out when the engine starts. If either light remains lit, STOP ENGINE IMMEDIATELY and investigate cause of problem.

16

IMPORTANT: If engine will not start and run after several attempts, refer to “Maintenance” section in this operator’s manual and bleed any air that may be present in the fuel system.

FIG. 71 45

15

TG6370, 6400, 6490, 6620, 6670 Normal Starting (Dual Clutch Type) CAUTION: Do not attempt to start the tractor unless seated in the operator’s seat.

Do not allow anyone on the tractor except for the operator.

３

F

H

E

C

14

FIGS. 72 & 73: To start the engine, proceed as follows: 1.

2.

3.

4.

5.

6.

1 9

Make sure latch the brake pedals, 1, and apply parking brake, 2.

Make sure the forward / reverse lever, 3, in the neutral position.

Make sure the range gear shift lever, 4, and main gear shift lever, 5, in the neutral position.

Make sure the rear PTO selector lever, 6,and mid PTO selector lever, 7, are in the neutral position.

Make sure the PTO switch, 8, is in OFF position.

Fully depress the main clutch pedal, 9, to disengage the clutch.

2 5 12 6 4 8 11 7

CAUTION: When the operator seats in the operator’s seat, the gearshift lever must be in neutral and PTO switch must be OFF to actuate safety switches and permit operation of the starter motor.

FIG. 72

7.

Set the position control lever, 10, in the down position. Turn the draft control dial, 11, to OFF position.

8. Turn the main switch, 12, to the “GLOW” position, 13, for 5-10 seconds.

9. Set the throttle lever, 14, at half to the fully open position.

10. Turn the main switch, 12, to the “ON” position, 15, for 1-2 seconds, and then turn to the “START” position, 16. Release the switch the moment engine starts.

11. Once the engine runs smoothly, set engine speed to approximately 1,500 min-1 to allow the engine and hydraulic system to warm up for several minutes.

DO NOT LOAD A COLD ENGINE. IMPORTANT:

10

13

16

12 15 FIG. 73

Do not crank engine for more than 10 seconds at a time. Allow starter to cool at least 20 seconds before repeating procedure. Never turn main switch to “start” with engine running. Severe damage will result.

FIG. 74: Battery charge indicator lamp, 17, and engine oil pressure lamp, 18, in indicator light strip should go out when the engine starts. If either light remains lit, STOP ENGINE IMMEDIATELY and investigate cause of problem.

18

IMPORTANT: If engine will not start and run after several attempts, refer to “Maintenance” section in this operator’s manual and bleed any air that may be present in the fuel system.

FIG. 74 46

17

OPERATION Restarting Warm Engine

• Test all controls (steering, braking, etc.) before operation.

When restarting an engine that is still warm from previous use, the same procedure is applied as with “Normal Starting” except step No. 8 may be omitted.

Use of glow plugs is not necessary when starting a warm engine.

NOTE: Installation of optional engine block heater is recommended in cold weather conditions.

Consult your dealer.

IMPORTANT:

Cold Weather Starting Procedure for starting an engine in colder ambient temperatures is identical to “Normal Starting” procedure except for the following:

Never use any kind of starting fluid to start engine equipped with glow plugs.

Otherwise, such starting fluid will contact hot glow plug and it will result severe engine damage.

In any case that a booster battery is required to start engine, ensure a booster battery is connected in parallel with the original battery. When using a booster battery and booster cables, always connect the both positive (+) terminals first. Then install booster cable on the booster battery negative (-) terminal. And connect it to ground of the tractor or negative (-) terminal of the original battery. Finally make sure the booster cable ends are away from tractor body or other battery to prevent short circuit or any sparks.

• Longer use of glow plugs may be required. Instead of the normal 5-10 seconds, main switch may need to be selected to “glow” for 10-20 seconds to adequately warm engine combustion chambers.

• Use of proper fuel for ambient temperature is recommended.

(TG6370 / 6400 /6490) At temperatures below 4 °C (39 °F) use of No. 1 (No. 1-D) diesel fuel is recommended due to possible “fuel gelling” characteristics of No. 2 (No. 2-D) fuel at cold ambient temperature.

(TG6620 / 6670) The European standard, EN590, contains climate dependent requirements and a range of options.

The options can be applied differently in each country. There are five classes that are given to arctic climates and severe winter climates, 0, 1, 2, 3 and 4. Refer to EN590 for a detailed discretion of the physical properties of the fuel.

Warm Up Period After starting a cold engine, let engine idle at slow speed to make sure all engine components are lubricated.

In colder ambient temperatures, extended warm-up time will be required to also warm hydraulic fluid and lubricate driveline components.

As for the diesel fuel ASTM D975 used in the U.S., at temperatures below -7°C (20°F) use of No.1-D diesel fuel is recommended due to possible “fuel gelling” characteristics of No.2-D fuel at cold ambient temperature.

TABLE 1: Suggested warm-up period Ambient Temp. ˚C °F 0 & up 32 & up 0 to -10 32 to 14 -10 to -20 14 to -4 -20 & less -4 & less

• The central hydraulic reservoir, which provides supply of hydraulic fluid in addition to transmission and center housing lubrication, will require additional warm-up time due to colder (thicker) oil. Refer to “Warm-Up Period” at right.

Warm-Up Time Time 5 to 10 min 10 to 20 min 20 to 30 min 30 min or more

IMPORTANT: Improper warm-up can result in severe engine damage, hydraulic pump seizure, driveline bearing / gear damage and / or sluggish steering / braking CAUTION: Make sure parking brake is securely applied and all controls are in neutral while warming up the tractor. Do not leave unit unattended.

47

TG6370, 6400, 6490, 6620, 6670 Operator Observations

Starting Circuit For The Engine

Constant attention should be paid to the following points during operation:

Tractor is equipped with a safety starting system to protect the operator. To permit tractor to be started (start motor to operate), ALL the following is required:

• Engine oil pressure lamp will come on in case of low engine speed. Stop engine immediately.

• PTO Switch in Off position • Range shift lever in Neutral (HST type and dual clutch type)

• Battery charge lamp will come on if battery is not being charged properly. Stop engine and investigate the cause.

• Forward / Reverse Lever in Neutral (Standard type) WARNING: Safety starting system is installed for your protection. DO NOT bypass or modify the safety starting system.

If the neutral start switch system does not operate properly as detailed above, contact your dealer immediately and have the system repaired.

• In case of overheated engine, the coolant temperature gauge reaches “H“ indication. Stop engine, allow to cool down and investigate cause.

• Do not run out of fuel. Before fuel gauge reaches the indication of “E” (empty), refill diesel fuel otherwise, it may result with need to bleed air from fuel circuit.

Periodically check that the starting circuit is working correctly. The procedure for check is as follows:

CAUTION: DO NOT attempt to service tractor with engine running or hot. Allow to cool.

1. Check that there are no bystanders around the tractor in order to avoid the inadvertently start.

NOTE: Refer to “Troubleshooting” when defect is indicated, to assist locating problem.

2. Depress clutch pedal (if equipped) and brake pedals. Attempt to start the tractor with the gear shift levers and PTO switch OFF. The tractor should start.

3. Depress the clutch pedal (if equipped) and brake pedals. Attempt to start the tractor with the gears engaged and the PTO switch ON. The tractor should NOT start.

4. Depress the clutch pedal (if equipped) and brake pedals. Attempt to start the tractor with the gears in neutral and the PTO switch ON. The tractor should NOT start.

If starting system is not working correctly it must be repaired immediately by your dealer.

The starter motor will rotate when not sitting in the seat, but the engine will not start.

The engine will automatically stop about 3 seconds after the operator leaves the seat. Do not leave the seat while operating the tractor.

48

OPERATION TRAVELING SPEED SELECTION (STANDARD TYPE) Standard type tractor is equipped to provide 12 forward gear speeds and 12 reverse gear speeds.

Engine Speed Control FIG. 75: Hand throttle lever, 1, controls engine speed and will remain in position selected by the operator.

With hand lever forward, engine will idle. Engine speed increases as lever is pulled progressively rearward.

F

H

E

C

1 2

Foot throttle pedal, 2, will override setting of hand throttle lever for increased engine speed. When pedal is released, engine speed returns to hand throttle lever setting.

CAUTION: Always select engine speed to ensure safe operation. Reduce speed prior to turning or reversing tractor.

FIG. 75

CAUTION: When using foot throttle pedal, the hand throttle lever must be in the low idle speed position. This ensures maximum “engine braking” when pedal is released.

IMPORTANT:

DO NOT “race” or excessively load cold engine.

Forward / Reverse Lever FIG. 76: Forward or reverse travel is selected by forward / reverse lever, 3, on steering column. Moving lever forward will select forward travel, lever backward will select reverse travel. A center neutral position should be selected whenever tractor is stopped.

F N R

CAUTION: Reduce engine speed before changing travel direction. Standard type tractor requires complete disengagement of main clutch (depressed clutch pedal) before changing forward / reverse lever position.

3

FIG. 76

NOTE: Make sure forward / reverse lever is in neutral position before starting engine.

49

TG6370, 6400, 6490, 6620, 6670 Shift Levers FIG. 77: Gear shift lever, 4, provides 4 gear selections.

These gear selections are compounded by range shift lever, 5. The range shift lever provides 3 major changes in traveling speed. Gear shift lever provides smaller changes traveling speed.

4

5

FIG. 77 Changing the Traveling Speed FIG. 78: It allows the forward/ reverse lever, 1, range shift lever, 2, and gear shift lever, 3, to be changed with the tractor in motion.

2

1

Range

Forward / Reverse

NOTE: Range shift lever must be shifted with clutch depressed and TRACTOR MOTION STOPPED. CAUTION: Reduce engine speed prior to changing any shift lever position. When changing the traveling direction, stop completely by depressing the clutch pedal.

3

Gear FIG. 78

• Forward / reverse - Depress the clutch pedal and move the forward / reverse lever in desired positions. And then slowly release the clutch pedal.

• Range Shift - Depress the clutch pedal and brake pedals. Shift gears at desired position after complete stop of tractor. And then slowly release clutch pedal.

• Gear shift - Depress the clutch pedal and brake pedals. Shift gears at desired position after complete stop of tractor. And then slowly release clutch pedal.

50

OPERATION TABLE 2: Arrangement of gears with traveling speeds, in order from slow to fast.

TABLE 2: Speed chart (Standard type) Shift Position Engine Speed Range Gear

NOTE: Traveling speed indicated at 2,600 engine min-1 speed with TG6370 - 13.6 - 24, TG6490 - 13.6 - 28 agricultural type rear tires.

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

51

TG6370 TG6490 2,600 min-1 km / h Forward 0.4 0.4 0.6 0.5 0.9 0.8 1.4 1.3 1.6 1.5 2.5 2.3 3.8 3.6 6.1 5.7 7.5 7.0 11.4 10.6 17.8 16.6 28.1 26.2 Reverse 0.4 0.3 0.5 0.5 0.8 0.8 1.3 1.2 1.5 1.4 2.3 2.1 3.6 3.3 5.6 5.2 7.0 6.5 10.5 9.8 16.5 15.4 26.0 24.3

TG6370, 6400, 6490, 6620, 6670 TRAVELING SPEED SELECTION (HST TYPE) TG6400 HST type tractor is equipped 3 range gear speeds.

TG6490 / 6620 /6670 HST type tractor is equipped 6 range gear speeds.

Engine Speed Control FIGS. 79 & 80: Hand throttle lever, 1, controls engine speed and will remain in position selected by the operator. With hand lever forward, engine will idle.

Engine speed increases as lever is pulled progressively rearward.

C

E

TG6400 / 6490

1

CAUTION: Always select engine speed to ensure safe operation. Reduce speed prior to turning or reversing tractor.

IMPORTANT:

DO NOT “race” or excessively load cold engine.

FIG. 79 F

H

E

C

TG6620 / 6670

1

FIG. 80

Forward / Reverse Lever FIG. 81: Forward or reverse travel is selected by forward / reverse lever, 2, on steering column. Moving lever forward will select forward travel, lever backward will select reverse travel. When moving the lever, lift it up first. A center neutral position should be selected whenever tractor is stopped.

F

N

R

CAUTION: Forward or reverse direction changes must not be made at high speed.

2

NOTE: Make sure forward / reverse lever is in neutral position before starting engine.

FIG. 81

52

OPERATION Shift Lever FIG. 82: The hydrostatic transmission provides variable speed control in forward or reverse.

Range shift lever, 3, provide 3 major changes in traveling speed.

3

IMPORTANT: Stop tractor completely whenever shifting the range shift lever, 3.

HST Pedal FIG. 83: When the forward / reverse Lever is in forward position, depressing the HST pedal, 4 enables the tractor to move forward.

FIG. 82 E

When the lever is in reverse position, depressing the pedal enables the tractor to move rearward. When the lever is in neutral position, the tractor does not move.

C

The more operators depresses the HST pedal, the more tractor increases its speed.

4

When the pedal is released, it will be returned to stopper position by spring. The tractor will slow, then stop when the pedal is reached to neutral position. When the pedal is completely released and in neutral position, the tractor should remain stopped.

This tractor is equipped with Auto throttle system, it raises up engine speed by depressing HST pedal.

Whenever it would be used, tractor does not load any implements or trailer.

FIG. 83

When tractor is operated with implements or trailer, set rated engine speed by hand throttle lever.

WARNING: To avoid personal injury.

- Do not release the HST pedal completely when tractor moves on.

(Except while cruise control operation) CAUTION: When the range shift lever is in Hare (H range), set engine speed 1,500 min-1 or more by using hand throttle lever, depending on the attached implement.

IMPORTANT: For optimum operation, keep engine speed above 1500 min-1 during operating the HST pedal. When start to drive on slope, select higher engine speed.

53

TG6370, 6400, 6490, 6620, 6670 Cruise Control FIG. 84.: Cruise control switch, 5, keeps the speed of tractor even if HST pedal is released.

6 5

When the switch is pressed during forward travel, the cruise control lamp in the indicator light array illuminates and traveling speed is set.

While cruise control is applied, engine revolution must be kept high with the throttle lever.

If not, when the operator takes his foot off the HST pedal, engine speed and traveling speed will slow down.

Cruise control is never applied on reverse travel.

FIG. 84

How to release the cruise control 1. Depress either left-hand or right-hand brake pedal, or both brake pedals together.

2. Depress the HST pedal from neutral position 3. Push the cruise control switch again.

4. Set the Forward / Reverse lever in reverse or neutral position.

WARNING: Cruise control should only be used in open spaces, without obstacles, with unobstructed view or traveling on the road. Be thoroughly familiar with cruise control operation before using.

Cruise control memory switch, 6, enables to set same speed of tractor that was used cruise control last time.

To use cruise control memory, engage cruise control by pressing the cruise control switch, 5, during forward travel, and press cruise control memory switch, 6. Set the same engine speed last time.

IMPORTANT: Cruise control memory switch is not linked to the engine speed. If the engine speed is different last time, speed of tractor will change.

NOTE: The speed of cruise control is memorized when cruise control is released. If engine is stopped, cruise control memory is deleted.

NOTE: When the speed of cruise control is memorized, cruise control lamp in the indicator light array illuminates.

54

OPERATION Speed Adjustment FIG. 85: When turning maximum speed control dial, 7, completely clockwise, the maximum speed of tractor is set at peak with HST pedal fully depressed.

8 7

In case of turning the dial in anti-clockwise direction, the setting of maximum speed can be reduced.

When turning the response control dial, 8, completely clockwise, quicker response to the acceleration of tractor is gained in accordance with depressing HST pedal.

In case of turning the dial in anti-clockwise direction, it becomes slower.

FIG. 85

HST Stage Selection (TG6400 / 6490 / 6620 / 6670) FIG. 86: Double acting lever, 9, enables to change the speed range, if the cruise control is not used. The HST stage selection provides 2 speed changes from low speed through high speed.

9

To select high speed, move the lever upward. To select low speed, move the lever downward.

FIG. 86 TABLE 3: Arrangement of gears with traveling speeds, in order from slow to fast.

TABLE 3: Speed chart (HST type) Shift Positions

NOTE: Traveling speed indicated at 2,600 engine min-1 speed with TG6400 - 13.6 - 24, TG6490, 6620 & 6670 - 13.6 - 28 agricultural type rear tires.

TG6400

Engine Speed Range

TG6490

TG6620 TG6670

2,600 min-1

Hi-Lo

km / h Forward

L H L H L H

6.8 15.4 31.1

5.4

5.4

8.5

8.5

9.7

9.7

15.2

15.2

19.0

19.0

30.1

30.1

4.3

4.3

6.8

6.8

7.7

7.7

12.2

12.2

15.2

15.2

24.1

24.1

Reverse L H L H L H 55

5.4 12.3 24.9

TG6370, 6400, 6490, 6620, 6670 TRAVELING SPEED SELECTION (DUAL CLUTCH TYPE) Dual clutch type tractor is equipped 24 forward gear speeds and 24 reverse gear speeds.

Engine Speed Control FIG. 87: Hand throttle lever, 1, controls engine speed and will remain in position selected by the operator.

With hand lever forward, engine will idle. Engine speed increases as lever is pulled progressively rearward.

F

H

E

C

1 2

Foot throttle pedal, 2, will override setting of hand throttle lever for increased engine speed. When pedal is released, engine speed returns to hand throttle lever setting.

CAUTION: Always select engine speed to ensure safe operation. Reduce speed prior to turning or reversing tractor.

FIG. 87

CAUTION: When using foot throttle pedal, the hand throttle lever must be in the low idle speed position. This ensures maximum “engine braking” when pedal is released.

IMPORTANT:

DO NOT “race” or excessively load cold engine.

Forward / Reverse Lever FIG. 88: Forward or reverse travel is selected by forward / reverse lever, 3, on steering column. Moving lever forward will select forward travel, lever backward will select reverse travel. When moving the lever, lift it up first. On this time, do not need to depress the clutch pedal. A center neutral position should be selected whenever tractor is stopped.

F

N

CAUTION: Reduce engine speed before changing travel direction. Dual clutch type tractor requires complete disengagement of main clutch (depressed clutch pedal) before changing forward / reverse lever position.

R 3

FIG. 88

NOTE: Make sure forward / reverse lever is in neutral position before starting engine.

56

OPERATION Shift Levers FIG. 89: Gear shift lever (main change lever), 4, provides 8 gear selections. This lever provides smaller traveling speed change.

4

Gear shift lever (sub-change lever), 5, provides 3 gear selections. This lever provides 3 major change in traveling speeds.

5

FIG. 89 Changing the Traveling Speed FIG. 90: Forward/ reverse lever, 1, range shift lever, 2, and gear shift lever, 3.

2

NOTE: Range shift lever must be shifted with clutch depressed and TRACTOR MOTION STOPPED.

1

Range

Forward / Reverse

NOTE: There is no need to stop tractor when changing forward/ reverse lever and gear shift lever.

3

CAUTION: Reduce engine speed and STOP motion before changing RANGE shift lever.

Gear

• Forward / reverse - Reduce engine speed before changing the forward / reverse lever in desired positions.

• Range Shift - Select desired RANGE with depressing the CLUTCH after stopping tractor.

FIG. 90

• Gear shift - Select desired GEAR without depressing the CLUTCH. When in D-Mode, the best GEAR (4th to 8th) is AUTOMATICALLY selected depending on the engine revolution speed.

57

TG6370, 6400, 6490, 6620, 6670 TABLE 4: Arrangement of gears with traveling speeds, in order from slow to fast.

TABLE 4: Speed chart (Dual clutch type) Shift Position Range Gear Engine Speed

NOTE: Traveling speed indicated at 2,600 engine min-1 speed with TG6370 - 13.6 - 24, TG6490 - 13.6 - 28 agricultural type rear tires.

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

58

TG6370

TG6490 km / h 2,600 min-1 Forward 0.7 0.8 0.9 0.9 1.0 1.1 1.2 1.3 1.7 1.9 2.1 2.2 2.4 2.6 2.9 3.1 3.3 3.7 3.9 4.4 4.6 5.1 5.5 6.2 7.9 8.6 9.5 10.3 11.1 12.1 13.3 14.5 8.2 9.0 9.8 10.8 11.5 12.7 13.8 15.2 19.7 21.3 23.6 25.5 27.6 29.9 33.1 35.8 Reverse 0.7 0.8 0.8 0.9 1.0 1.1 1.2 1.3 1.7 1.8 2.0 2.2 2.3 2.6 2.8 3.1 3.2 3.6 3.8 4.3 4.5 5.1 5.4 6.1 7.7 8.5 9.2 10.2 10.8 12.0 12.9 14.3 7.9 8.9 9.5 10.7 11.1 12.6 13.3 15.0 19.1 21.1 22.9 25.2 26.8 29.6 32.1 35.4

OPERATION STOPPING TRACTOR (STANDARD TYPE) FIGS. 91 & 92: To stop the tractor, move the throttle lever, 1, forward, to reduce engine speed and slow travel. Depress the clutch pedal, 2, and brake pedal, 3 and 4, to stop. Put the range shift lever, 5, and gear shift lever, 6, and forward / reverse shift, 7, in neutral position.

1

7

F

H

E

C

2

When travelling on road or operating at high speed, brake pedals must be latched together with interlocking plate, 8, so both brakes will apply at the same time.

9

6

CAUTION: Do not use individual wheel brakes, and latch brake pedals together using interlocking plate when traveling on roads or operating at high speed. Make sure brakes are adjusted evenly.

5

Pull up parking brake lever, 9, up firmly.

Allow engine speed to idle several minutes to allow even cooling. Then turn main switch to “off” shutting off engine. Lower 3-point hitch and remove key from ignition.

FIG. 91 NOTE: Brake pedals, 3 and 4, may be used independently to operate respective brake and assist turning at low speed operation.

Unlatch brake pedals and use as required to assist turning.

8

3

4 FIG. 92

FIG. 93: Always park tractor on level area whenever possible and apply parking brake. If hillside parking is necessary, securely block both rear wheels as shown add with the parking brake.

NOTE: When parking tractor, be sure tires are locked.

FIG. 93 59

TG6370, 6400, 6490, 6620, 6670 STOPPING TRACTOR (HST TYPE) FIGS. 94 & 95: To stop the tractor, decrease its speed by releasing the HST pedal. Move the throttle lever, 1, forward to reduce the engine revolution, and then put the range shift lever, 2, and forward / reverse lever, 3, in neutral position.

1 3

When travelling on road or operating at high speed, brake pedals must be latched together with interlocking plate, 4, so both brakes will apply at the same time.

F

H

E

C

5

CAUTION: Do not use individual wheel brakes, and latch brake pedals together using interlocking plate when traveling on roads or operating at high speed. Make sure brakes are adjusted evenly.

Pull up parking brake lever, 5, up firmly.

2

Allow engine speed to idle several minutes to allow even cooling. Then turn main switch to “off” shutting off engine. Lower 3-point hitch and remove key from ignition.

CAUTION: Because power train is included the hydraulic system, there is no mechanical engagements in transmission when stopping engine. So engine braking does not work when stopping engine.

When stopping or parking tractor, apply the brake. Otherwise tractor may have a tendency to creep.

FIG. 94

4

NOTE: Brake pedals, 6 and 7, may be used independently to operate respective brake and assist turning at low speed operation.

Unlatch brake pedals and use as required to assist turning..

6

7 FIG. 95

FIG. 96: Always park tractor on level area whenever possible and apply parking brake. If hillside parking is necessary, securely block both rear wheels as shown add with the parking brake.

NOTE: When parking tractor, be sure tires are locked.

FIG. 96 60

OPERATION STOPPING TRACTOR (DUAL CLUTCH TYPE) FIGS. 97 & 98: To stop the tractor, move the throttle lever, 1, forward, to reduce engine speed and slow travel. Depress the clutch pedal, 2, and brake pedal, 3 and 4, to stop. Put the range shift lever, 5, and gear shift lever, 6, and forward / reverse shift, 7, in neutral position.

7

1 F

H

E

C

2

When travelling on road or operating at high speed, brake pedals must be latched together with interlocking plate, 8, so both brakes will apply at the same time.

9

6

CAUTION: Do not use individual wheel brakes, and latch brake pedals together using interlocking plate when traveling on roads or operating at high speed. Make sure brakes are adjusted evenly.

5

Pull up parking brake lever, 9, up firmly.

Allow engine speed to idle several minutes to allow even cooling. Then turn main switch to “off” shutting off engine. Lower 3-point hitch and remove key from ignition.

FIG. 97 NOTE: Brake pedals, 3 and 4, may be used independently to operate respective brake and assist turning at low speed operation.

Unlatch brake pedals and use as required to assist turning.

8

3

4 FIG. 98

FIG. 99: Always park tractor on level area whenever possible and apply parking brake. If hillside parking is necessary, securely block both rear wheels as shown add with the parking brake.

NOTE: When parking tractor, be sure tires are locked.

FIG. 99 61

TG6370, 6400, 6490, 6620, 6670 DIFFERENTIAL LOCK FIG. 100: When differential lock pedal, 1, is depressed, both sides of the rear axle are locked to gather so the rear wheels turns together at the same speed. This is especially important when operating in loose soil or slippy condition.

Standard & Dual Clutch Types

HST Type

1

To engage differential lock, depress clutch pedal (if equipped) and allow all rear wheel movement to stop.

Depress lock pedal and slowly engage the clutch.

1

To disengage differential lock, depress clutch pedal (if equipped) and release differential lock pedal. Lock pedal should normally return to the “off” position.

FIG. 100

NOTE: On occasion, differential lock pedal may remain engaged due to torque difference exerted by rear wheels. In this case, tap brake pedals alternatively while tractor is slowly in motion to release the pedal.

CAUTION: DO NOT use differential lock on hard surfaces or traveling on road.

4-WHEEL DRIVE FIG. 101: 4-wheel drive models have a mechanically driven front axle. The 4WD shift lever (standard and HST types) or 4WD switch (dual clutch type), 1, engages and disengages the drive for the front axle.

Dual Clutch Type

Standard &HST Types

With the lever pulled up or the switch turned to right position, the front axle (4WD) is disengaged. With the lever pushed down or the switch turned to left position, the front axle is engaged, and power is available to both front and rear axles.

2WD

1 4WD

1

IMPORTANT: Depress clutch pedal (if equipped).

Stop the tractor before engaging or disengaging the 4 wheel drive. (Standard &HST types)

FIG. 101

FIG. 102: When front axle is engaged, traveling speed of front tires will vary from traveling speed of rear tires. This is to assist steering when 4-wheel drive is selected.

For this reason, front axle must be disengaged when tractor is transported or operated on a hard, dry surface. Failure to do so will result in rapid wear of front drive tires and possible driveline damage.

IMPORTANT: Always disengage front drive axle when operating in conditions with minimal wheel slippage (DRY OR HARD SURFACES). If tire replacement is necessary, identical replacements must be installed to maintain correct front / rear axle ratio.

FIG. 102

62

OPERATION POWER TAKE-OFF (PTO) WARNING: PTO shafts and PTO-driven implements can be extremely dangerous.

Observe the following important points:

Ensure that all PTO safety shields are in place at all times.

Ensure all PTO-driven implements are in good condition and conform to current standards.

DO NOT operate tractor without a PTO cap installed. The cap protects people from injury as well as the splines from damage when implement is detached.

NEVER step across any driveline.

Before attaching, adjusting or working on PTO-driven implements, disengage the PTO, stop the engine and remove the key.

DO NOT work under raised equipment.

DO NOT use the tractor drawbar or the implement drawbar as a step.

Before engaging a PTO-driven implement, ALWAYS carefully raise and lower the implement using Position Control. Check noise and sliding range of universal joint.

NEVER wear loose fitting clothes.

NEVER use the driveline as a step.

Keep at least your height away from a rotating driveline.

Rear PTO Shaft FIG. 103: PTO shaft, 1, (6 splines, 35 mm) is provided power to rear-mounted PTO driven implement.

Protective cover shall be installed when it is not in use.

PTO shaft rotating speed: (TG6370 / 6400 / 6490 - Standard & HST Types) 2 operating speeds of rear PTO are available.

540 min-1 @ 2,430 engine revolution speed 750 min-1 @ 2,500 engine revolution speed

1

2 (TG6370 / 6490 - Dual Clutch Type) 3 operating speeds of rear PTO are available.

540 min-1 @ 2,480 / 2,287 engine revolution speed 750 min-1 @ 2,453 engine revolution speed 1,000 min-1 @ 2,457 engine revolution speed

FIG. 103

(TG6620 / 6670) 2 operating speeds of rear PTO are available.

540 min-1 @ 2,430 engine revolution speed 750 min-1 @ 2,475 engine revolution speed IMPORTANT: When rear PTO is used with 3-point mounted equipment, it may be necessary to remove drawbar, 2, at rear of tractor. Some types of mounted equipment, when lowered, may contact implement driveshaft to drawbar.

IMPORTANT: When engaging PTO clutch, engine revolution must be 1,500 min-1 or less to avoid a shock.

After engaging PTO clutch, increase engine revolution depending on the PTO revolution you require.

63

TG6370, 6400, 6490, 6620, 6670 FIG. 104: Implement driveshaft shown connected to tractor rear PTO shaft.

CAUTION: Make sure all PTO shields are installed on tractor and equipment.

Before cleaning or adjusting tractor or PTO driven machine, stop the engine, and DISENGAGE PTO.

Mid PTO Shaft FIG. 105: Mid PTO, 1, is a forward-facing shaft located at underside of tractor. This accessory can be installed to operate certain mid or front-mounted implements.

FIG. 104

Mid PTO cover must be installed when mid PTO is not required.

NOTE: Standard type is optional. HST and dual clutch types are standard.

Shaft size: TG6370 / 6400: ASAE S431 25.4 mm 15-spline shaft is used.

1 TG6490 / 6620 / 6670: ASAE S431 35 mm 6-spline shaft is used.

FIG. 105 PTO shaft rotating speed: (Standard & HST Types) Normal mid PTO shaft operating speed: 1,916 min-1 @ 2,600 engine revolution speed (Dual Clutch Type - TG6370) Normal mid PTO shaft operating speed: 1,072 min-1 @ 2,600 engine revolution speed 1,507 min-1 @ 2,600 engine revolution speed 1,921 min-1 @ 2,600 engine revolution speed (Dual Clutch Type - TG6490) Normal mid PTO shaft operating speed: 1,163 min-1 @ 2,600 engine revolution speed 1,595 min-1 @ 2,600 engine revolution speed 1,004 min-1 @ 2,600 engine revolution speed IMPORTANT: When engaging PTO clutch, engine revolution must be 1,500 min-1 or less to avoid a shock.

After engaging PTO clutch, increase engine revolution depending on the PTO revolution you require.

CAUTION: Make sure all PTO shields are installed on tractor and equipment.

Before cleaning or adjusting tractor or PTO driven machine, stop the engine, and DISENGAGE PTO. 64

OPERATION PTO Switch & PTO Selectable Switch FIG. 106: PTO switch, 1, is used to engage and disengage the PTO clutch.

Standard & HST type

1

1

To engage the PTO clutch, turn the PTO switch clockwise with pushing down the knob. When engaged, the PTO indicator lamp in the indicator light array will illuminate.

To disengage, push down the PTO switch, the knob turned anti-clockwise by itself.

IMPORTANT:

Dual clutch type

3

PTO switch is equipped with a lockout to prevent accidental engagement of PTO system. DO NOT FORCE SWITCH.

3

2

FIG. 106

NOTE: PTO switch, 1, is used in conjunction with rear PTO selector lever or Mid-PTO selector lever.

NOTE: When PTO switch is ON position, the engine cannot be started. Always off PTO switch when start the engine.

WARNING: Always disengage PTO clutch and stop tractor engine before servicing PTO-driven implement. Allow all movement and motion to stop before leaving operator’s seat.

Up stop switch, 2, is used to adjust the maximum height position of 3-point linkage (implement).

• Turn to clockwise: Maximum height position raises.

• Turn to counterclockwise: Maximum height position lowers.

NOTE: Up stop switch, 2, is only equipped on Dual clutch type.

To minimise the shock of PTO clutch engagement, there is selectable switch on right-hand console.

Setting PTO selectable switch, 2, facilitates optimum engagement of the PTO. Turn PTO selectable switch, 2, to right to engage rear and mid PTO in normal mode.

Turn PTO selectable switch, 2, to left, engage rear and mid PTO engaging in soft mode.

NOTE: Lower the engine speed when engaging PTO clutch if there is considerable shock.

Switch

Initial pressure rise at engage

TABLE 5: Selectable mode Speed of PTO clutch engagement

Shock

Attachment

High

Normal

Normal

Rotary, Cultivator

Low

Slow

Soft

Mower, Hayer

65

TG6370, 6400, 6490, 6620, 6670 Rear PTO Selector Lever (Standard &HST Types) FIG. 107: Rear PTO selector lever, 1, provides 2 speed of rear PTO.

Standard &HST Types

When lever is moved to center position, 2, 540 min-1 PTO is selected. When lever is forward, 3, 750 min-1 PTO is selected.

3

When lever is rearward, 4, the rear PTO is not rotate.

2

Rear PTO selector lever is used with PTO switch on right-hand console.

IMPORTANT:

4

1

Before moving rear PTO selector lever, PTO switch must be in the OFF position.

FIG. 107

(Dual Clutch Type) FIG. 108: Rear PTO selector lever, 1, provides 3 speed of rear PTO.

Dual Clutch Type

When lever is in the upper right-hand position, 2, 540 min-1 PTO is selected. When lever is in the lower lefthand position, 3, 750 min-1 PTO is selected. When lever is in the upper left-hand position, 4, 1,000 min-1 PTO is selected.

4

1

2

When lever is in the lower right-hand position, 5, the rear PTO is not rotate.

Rear PTO selector lever is used with PTO switch on right-hand console.

IMPORTANT:

3

Before moving rear PTO selector lever, PTO switch must be in the OFF position.

FIG. 108

Mid PTO Selector Lever NOTE: For Standard type, mid PTO is optional.

For HST & dual cultch types, mid PTO is standard.

(Standard &HST Types) FIG. 109: Mid PTO selector lever, 1, provides the mid PTO of selection.

Standard &HST Types

When lever is rearward, 2, the mid PTO rotates 1,916 min-1 (when engine speed is 2,600 min-1).

3

When lever is returned to forward, 3, the mid PTO is not rotate.

2

Mid PTO selector lever is used with PTO switch on right-hand console.

IMPORTANT:

1

Before moving mid PTO selector lever, PTO switch must be in the OFF position.

FIG. 109

66

5

OPERATION (Dual Clutch Type) FIG. 110: Mid PTO selector lever, 1, provides the mid PTO selection.

Dual Clutch Type

When lever is forward, 2, the mid PTO is operated.

4

When lever is returned to rearward, 3, the mid PTO is not rotate.

2

Mid PTO selector lever is used with PTO switch on right-hand console, and the rear PTO selector lever, 4.

1 3

IMPORTANT:

Before moving mid PTO selector lever, PTO switch must be in the OFF position.

FIG. 110

Rear PTO Operating Control To select rear PTO - PTO switch is in the OFF position, and then move rear PTO selector lever to 540 min-1, 750 min-1 or 1,000 min-1 PTO (if equipped).

To engage PTO - Turn PTO switch clockwise with pushing down the knob. The PTO indicator lamp in the indicator light array will illuminate when engaged.

To disengage PTO - Push PTO switch and then turn it counterclockwise by itself.

When further use of rear PTO is not required, return rear PTO selector lever to neutral position.

Mid PTO Operating Control To select mid PTO - PTO switch is in the OFF position, and then move mid PTO selector lever to select mid PTO. For dual clutch type, move rear PTO selector lever to select the speed of mid PTO. To engage PTO - Turn PTO switch clockwise with pushing down the knob. The PTO indicator lamp in the indicator light array will illuminate when engaged.

To disengage PTO - Push PTO switch and then turn it counterclockwise by itself.

When further use of mid PTO is not required, return mid PTO selector lever to neutral position.

67

TG6370, 6400, 6490, 6620, 6670 3-POINT LINKAGE 3-point linkage combines tractor and implement into 1 working unit. Implement position is controlled hydraulically.

Position Control (Standard & HST Types) FIG. 111: 3-Point Linkage Position Control Lever - 3-point linkage position control lever, 1, controls the linkage height. The position control lever, 1, is moved rearward, the 3-point linkage (implement) are raised.

Moving the lever forward will lower the 3-point linkage to the selected position. Lever setting position provides a specific linkage (and implement) height.

1

Lever stops, 2 and 3, can be adjusted within slot to limit implement upper and lower position. To set the lowering height at suitable position for the implement use the front lever stop, 2. This enables the implement to be returned to same height after the hitch has been raised. To limit the upper position of the implement, use the rear lever stop, 3, if required.

4 3

2 FIG. 111

Draft Control Lever - Draft control lever, 4, regulates linkage height to provide constant draft force of ground engaging implements (plows, subsoilers, etc.).

Moving the draft control lever forward will provide deeper implements working depth. Moving the draft control lever backward will provide a shallower depth.

As soil conditions change, the system will raise or lower implements to keep even load to tractor.

NOTE: HST type tractor does not equip draft control lever, 4.

CAUTION: Use position control lever, 1, when attaching or detaching implements.

Place draft control lever, 4, fully forward when using position control.

FIG. 112: Lowering rate control knob, 5, adjusts the drop speed of 3-point linkage and implement. Turn the knob clockwise to slow the drop speed, and turn the knob counterclockwise to increase the drop rate (decrease lowering time). Turning the knob fully clockwise to lock the implement at the upper position.

Standard Type

HST Type

5

5

FIG. 112 68

OPERATION CAUTION: When working on or around equipped implements, always lower them to ground prior to work. If an implement must be raised, always lock the lowering rate knob, and support the implement and lower links securely.

CAUTION: Always disengage the PTO clutch and stop the tractor engine before servicing any PTO-driven implement.

Allow all movement and motion to stop before leaving operator’s seat.

Position Control (Dual Clutch Type) FIG. 113: Position Control Lever - 3-Point Linkage Position Control Lever - 3-point linkage position control lever, 1, controls the linkage height. The position control lever, 1, is moved rearward, the 3-point linkage (implement) are raised. Moving the lever forward will lower the 3-point linkage to the selected position.

Lever setting position provides a specific linkage (and implement) height.

1

Draft Control Dial - Draft control dial, 2, regulates linkage height to provide constant draft force of ground engaging implements (plows, subsoilers, etc.).

Turn the draft control dial clockwise to provide deeper implements working depth. Turn the dial counterclockwise to provide a shallower depth.

As soft conditions change, the system will raise or lower implements to keep even load to tractor.

2

FIG. 113

CAUTION : Do not use draft control dial when precise hitch positioning is required (such as attaching/detaching implements). Do not use draft control on non ground-engaging implements. (Set the dial full clockwise position.)

69

TG6370, 6400, 6490, 6620, 6670 FIGS. 114 & 115: Up-Stop Switch - Up-stop is the system that PTO shaft rotation is stopped when implement is raised. It prevents mud splash and protect the drive line PTO. CAUTION: At the time of blinking up-stop indicator lamp in indicator light strip, PTO shaft restarts to rotate if the implement is lowered. Never allow other persons in the vicinity of the tractor. Otherwise unexpected accidents may occur.

6

CAUTION: Place all PTO selector levers in neutral when PTO is not in use. Otherwise unexpected accidents may occur.

9

FIG. 114

When up-stop switch, 6, is ON position, PTO shaft rotation stops with lifting the implement by position control lever. With lowering the implement by position control lever, PTO restarts.

When up-stop switch is ON position, up-stop indicator lamp, 7, in indicator light strip illuminates.

8

When up-stop switch is ON position with moving position control lever to forward, PTO drive warning lamp, 8, illuminates (also PTO rotating). When up-stop switch is ON position with moving position control lever to rearward, PTO drive warning lamp, 8, blinks (also PTO stops).

7

Reverse-Up Switch - Reverse-up is the system that implement is automatically raised when forward / reverse lever is selected to reverse travel. It prevents the implement damage when the tractor drives to rearward without raising the implement.

FIG. 115

CAUTION: Set the reverse-up switch in “OFF“ position except working field.

CAUTION: Make sure that the implement is raised before the tractor drives to rearward. The reverse-up is operated only when forward / reverse lever is selected from neutral to reverse travel. When forward / reverse lever is in reverse position, reverse-up will not operate. Otherwise damage may occur.

To start reverse-up, turn reverse-up switch, 9, to ON position.

When reverse-up is ON position, reverse-up indicator lamp,10, in indicator light strip illuminates.

70

10

OPERATION FIG. 116: Lowering rate control knob, 5, adjusts the speed of drop of 3-point linkage and implement. Turn the knob clockwise to slow the drop speed, and turn the knob counterclockwise to increase the drop speed (quick down the implement). Turning the knob fully clockwise to lock the implement in the raised position.

5

CAUTION: When working on or around equipped implements, always lower them to ground prior to work. If an implement must be raised, always lock the lowering rate knob, and support the implement and lower links securely.

FIG. 116

CAUTION: Always disengage the PTO clutch and stop the tractor engine before servicing any PTO-driven implement.

Allow all movement and motion to stop before leaving operator’s seat.

3-Point Linkage F I G . 11 7 : L i n k a g e c o n s i s t s o f s e v e r a l m a j o r components:

4

Lower Links, 1 - Set points of implement. (bottom side)

2 5

Lift Rods, 2 - Connect lower links to lift arms for raising / lowering of lower links. Right-hand side lift rod has turn-buckle for leveling the implement (side to side).

3

Check Chain, 3 - Reduce swing of implement.

Top Link, 4 - Set point of implement (top side). It can be adjusted the length to control the slant of attachment. Top link also provides draft load sensing for draft control.

FIG. 117

Spring, 5 - Secures the lower links together to prevent each the tire when the hitch is not used.

71

1

TG6370, 6400, 6490, 6620, 6670 FIG. 118: To equip various implements, rear linkage is standardized according to spacing, pin size, etc. This enables usage of alternate implements with minimal adjustments as long as matching size or “Category” is used.

This tractor is able to equip for “Category I” implements with following attaching point dimensions: TABLE 6: Attaching point dimension Ref. A

Description Lower Link Width

Dimension (Size) 681 mm (26.8”)

B

Lower Link Pin Diameter

22 mm (0.88”)

C D

Top Link Height Top Link Pin Diameter

457 mm (18”) 19 mm (0.75”)

FIG. 118

FIG. 119 & 120: Linkage provides 4 positions of connecting top link, 1, to tractor.

1

For most implements, securing top link, 1, B, is satisfactory, but position may be varied to provide increased implement height during transport.

A B

• Select hole, A, when installing a heavy implement.

C

• Select hole C or D for an implement that is used high off the ground.

D FIG. 119

A

1 B C D

FIG. 120

72

OPERATION FIG. 121: Lift rods, 1, and lower links, 2, also have multiple positions. Normally, lower hole, B, in each lift rod is attached to forward hole, X, in lower link.

1

A B

CAUTION: Make sure all pins secured fasten. Then adjust each parts. Always use pins supplied with tractor.

C

CAUTION: Stay clear from the area of the 3-point linkage when using mounted attachments, trailers and towed machinery.

2

NOTE: When using implements with PTO shafts, adjust the height and width of 3-point to have clearance between implement and 3-point linkage. Also check any interference with the master shield.

X

FIG. 121

Attaching Implements CAUTION: Always use position control lever to attach / detach implements to provide precise control of height.

FIGS. 122 & 123: Back tractor to implement, centering tractor with implement hitch frame.

Standard &HST Types

Dual Clutch Type

Remove the balls, 2, from the lower link hooks, 3.

Install the balls to the implements.

1

1

Use the control lever, 1, to raise or lower the hitch so the hooks of the lower link are below the balls. Unlock the lower link hook, 3. Back the tractor to the implement. Align the hooks on the lower links with the balls on the implement.

Use the control lever, 1, to raise the lower link so the hooks connect to the balls on the implement. Make sure that the parking brake is applied. Stop the engine and remove the key from main switch. Lock the lower link hooks,3.

FIG. 122

4

Remove the pin from the top link, 4, and then attach the top link to the top of the implement hitch frame.

Insert the pin in the top link. Rotate center barrel section of top link, to lengthen or shorten it, and level implement from front to rear.

3

2

After the implement is attached, it can be readjusted for level operation using turn buckle and top link. Secure all adjustments.

IMPORTANT:

With some mounted implements, it will be necessary to remove drawbar at rear of tractor to permit implement to be raised and lowered without obstruction.

FIG. 123

73

TG6370, 6400, 6490, 6620, 6670 FIG. 124: Certain implements require minimal sideplay. Check chain 5, at each lower link should be evenly adjusted to reduce side-play to desirable level.

Do not remove all side-play as lower link damage may result.

NOTE: The amount of side-play (stabilizer looseness) is dependent upon implement and type of operation. Normally 50 mm (2”) of total side movement is desired, 25 mm (1”) to each side of tractor centerline.

FIG. 124

Using Position Control FIG. 125: Type of Work - Attaching / detaching implements and other operations requiring implement to be kept at constant height above ground. Also used with tool bars having flexible row units and implements equipped with gauge (support) wheels.

FIGS. 126 & 127: Lever Positions - Use position control lever, 1, to adjust hitch and implement position.

NOTE: Front lever stop (if equipped), 2, can be set to contact position control lever in implement work position. This enables implement to be returned to identical position after hitch has been raised for turning, transporting, etc.

Rear lever stop (if equipped), 3, can be set to limit raising height, if required.

FIG. 125 Standard & HST Types

To Begin Work - Align tractor and implement in field and move position control lever, 1, forward. Adjust implement height using position control lever and set adjustable stops, 2 and 3, as desired.

1

3

When Turning - Move position control lever, 1, backward to raise implement. Finish turning and return lever against stop to resume operation.

2

To Finish Work and Transport - Move position control lever, 1, fully backward in quadrant.

FIG. 126 Dual Clutch Type

CAUTION: When using mounted implements with PTO driveline, make sure: PTO drive shaft has minimum 51 mm (2”) engagement of telescoping sections, at all hitch / implement positions.

1

Hitch height during raising does not bind drive shaft universal joints due to extreme drive shaft angles. Limiting raising height may be required.

PTO drive is disengaged during transport.

FIG. 127 74

OPERATION Using Draft Control NOTE: For standard and dual clutch types, draft control is standard. For HST type, draft control is optional.

FIG. 128: Type of Work - When ground engaging implements such as plows, subsoilers, cultivators, etc. are used.

CAUTION: Do not use draft control when precise hitch positioning is required (attaching / detaching implements for example).

FIG. 128

FIGS. 129 & 130: Lever Positions - Use position control lever, 1, to raise and lower implement and use draft control lever or dial, 2, to adjust implement working depth and system sensitivity in soil.

Standard & HST Types

1

Position control lever, 1, can also be used to prevent excessive lowering of hitch when low draft areas (sandy soil) are encountered.

2 4

NOTE: Adjust lever stops (if equipped), 3 and 4, can be set to contact position control lever in implement work or raised position. This enables implement to be returned to identical setting after hitch has been raised for turning at field ends.

3 FIG. 129

To Begin Work - Align tractor and implement in field and move position control lever, 1, forward (to DOWN). while driving tractor forward, lowering implement. Then adjust draft control lever or dial, 2, until correct working depth is maintained.

Dual Clutch Type

２

1

When Turning - Move position control lever, 1, backward to raise implement and permit completion of turn. Return implement to work position by selecting position control lever to previous position against stop.

To Finish Work and Transport - Pull position control lever backward fully to up setting.

FIG. 130

NOTE: Changes is soil texture or traveling speed of unit may require slight readjustment of draft control lever to maintain consistent working depth as these can have a direct influence on implement draft load.

If erratic operation is encountered, turn lowering rate control knob, clockwise to slow.

Lowering top link attaching location on tractor will also decrease sensitivity.

75

TG6370, 6400, 6490, 6620, 6670 Detaching Implements CAUTION: Always use position control lever to attach / detach implements to provide precise control of hitch.

Select a level area to detach and store the implement. Lower implement to ground by moving position control lever forward to down position. If necessary, adjust leveling handle on the lift rod to level implement against ground.

Apply the parking brake. Stop the engine, and remove the key from main switch.

Disconnect implement from PTO drive shaft (if necessary). Detach top link from implement and place in storage position on tractor by engaging spring on top link in slot in rear center panel.

NOTE: Lengthening or shortening of top link may be required to permit disconnection from implement.

DRAWBAR FIG. 131: Drawbar, 1, at rear of tractor allows pulltype implements to be attached to tractor. Maximum vertical load on drawbar must not exceed 500 kg (1,102 lbs).

2

CAUTION: Pulling heavy loads will require extended braking distances. Reduce travel speed.

Make sure attachment is properly secured and safety chain is used.

1

NOTE: When using 3-point hitch, it may be necessary to remove drawbar by removing clips and pins, 2, and sliding drawbar from bracket to improve operating clearance. This is particularly true with mounted implements using PTO drive.

FIG. 131

76

OPERATION JOYSTICK Joystick Control Lever FIG. 132: The joystick control lever, 1, can be used to determine the front loader boom position and bucket position. The lever is located to the front on the right side of the seat.

1

The “Raise”, “Lower”, “Free Flow” operations for the boom, and “Roll back”, “Dump” and “Fast Dump” operations for the bucket can be controlled with this lever.

The raise and lower operations for the boom, and scoop and dump operations for the bucket automatically return to neutral when the lever is released.

2

The free flow on boom can be kept at the free flow position by the detent device.

FIG. 132

WARNING: Do not operate the joystick except when seated in the tractor. The front loader may operate unexpectedly, resulting in an accident.

NOTE: When the joystick is operated on the tractor without a front loader, the relief value may be operated, causing the 3-point link to stop operating.

Joystick Lockout The joystick lockout, 2, is a lever located to the front on the right side of the seat.

To lock the joystick, move the joystick lockout lever to down.

To unlock the joystick, raise the joystick lockout lever.

77

TG6370, 6400, 6490, 6620, 6670 Joystick Operation FIGS. 133 & 134: Joystick control lever, 1, provides “Joystick” operation of auxiliary valve. Moving lever backward and forward operates the A / B spool valve for raising and lowering loader (or other attachment). Pushing lever completely forward will retain lever in “float” position to allow attachment to follow ground contours.

1

Moving lever side-to-side operates the C / D spool valve and controls loader bucket position. Pulling lever to left will curl bucket and pushing lever to right will dump the bucket. Pushing lever completely to right side will retain lever in “regenerative” position, allowing bucket to dump quickly. When used with a blade angling (left and right) can be controlled.

FIG. 133

All positions (except float) will return to neutral position when lever is released. When in Float, the A / B spool valve is held by detents and the lever will have to be pulled backward to disengage the detents.

NOTE: Inability to select “float” or any other valve functions may indicate the need for control rod adjustment at base of control lever.

FIG. 134 FIGS. 135 & 136: Output ports are located next to the right-hand step.

Cabin Type & Rear ROPS Type

1. The output ports are identified by letters, A, B, C, D, from top to bottom as indicated on output ports.

A B

2. The following chart provides correct output port location when using a loader.

C

TABLE 7: Function of output port (loader) Output Port A B C D

Function Loader Raise Loader Lower and Loader Float Bucket Curl Bucket Dump and Dump quickly

D FIG. 135 Center ROPS Type

3. For other operations, except for loader work use the following.

A

TABLE 8: Function of output port (other operations) Output Port A B C D

Double Acting Extend Retract Extend Retract

C

Single Acting Extend / Retract Not Used Not Used Not Used

B D FIG. 136 78

OPERATION EXTERNAL AUXILIARY HYDRAULICS Auxiliary hydraulics operate implements requiring external hydraulic source for operation.

External Auxiliary Hydraulics Lever FIG. 137: External auxiliary hydraulics lever, 1, controls implement raising / lowering when first set of remote couplers are used. External auxiliary hydraulics lever, 2, controls implement when second set of remote couplers are used.

External auxiliary hydraulics lever(s) are spring-loaded to center neutral position, from normal raise or lower positions.

1 2 FIG. 137

Hydraulic Valves FIG. 138: Remote couplers are located at rear of tractor, above the top link bracket.

Right-hand side coupler set, 1, corresponds with lefthand side external auxiliary hydraulics lever.

Left-hand side coupler set, 2, corresponds with righthand side external auxiliary hydraulics lever.

1 2

Implement hoses must be connected to each coupler set so when respective external auxiliary hydraulics lever is pulled backward, implement raises and, when pushed forward, implement lowers. Male coupler tips (on implement hoses) must be compatible with tractor couplers and must also be inserted fully and locked into tractor couplers to operate correctly.

FIG. 138

CAUTION: Always lower implement to ground, shut off engine and relieve system pressure (by operating control levers with engine off) before connecting or disconnecting implement hoses.

3

CAUTION: Make sure all hydraulic hoses, couplers and cylinders are in good condition before use. Damaged equipment is dangerous.

FIG. 139: The selector function, 3, must be turned to the left. The selector function is located at the right rear of the tractor on the back of the valve spools.

NOTE: For normal double-acting operation selector function must be turned to the right.

FIG. 139 79

TG6370, 6400, 6490, 6620, 6670 ROLL OVER PROTECTIVE STRUCTURE (ROPS) Rear ROPS Type FIG. 140: Rear ROPS type tractor is equipped with a roll-over protective structure (ROPS). Seat belts must be worn.

1

When the tractor is not being operated, the ROPS can be folded down if it will hit the roof of the garage where it is parked.

When the locking pin, 1, is removed, the upper portion, 2, of the ROPS can be folded down to the rear.

2

WARNING: Do not operate the tractor with the ROPS folded down. This may result in serious injury if the tractor rolls over.

FIG. 140 Center ROPS Type Center ROPS type tractor is equipped with center mounted roll-over protective structure (Center ROPS).

Seat belt must be worn.

3

(view from operator’s seat)

2 2

When the tractor is not being operated, the ROPS can be folded down if it will hit the roof of the garage where it is parked.

FIG. 141: After removing the lock pin, 1, and the pin, 2, the upper portion, 3, of ROPS can be folded down to the front.

1

FIG. 141 FIG. 142: The upper portion, 3, of ROPS can be fixed to folded position by installing the lock pin, 1, and the pin, 2.

(view from operator’s seat)

2 3

WARNING: Do not operate the tractor with the ROPS folded down. This may result in serious injury if the tractor rolls over.

1

2

FIG. 142

80

OPERATION REAR HITCH FIG. 143: Rear hitch, 1, at rear of tractor allows towed implements to be attached to tractor. Tractor does not have any trailer braking system.

Follow strictly the instructions outlined in the operator’s manual of the mounted or trailed machinery or trailer, and do not operate the combination tractor - machine or tractor - trailer unless all instructions have been followed.

1 FIG. 143 TABLE 9: Keep the maximum vertical load on the rear hitch, related to the rear tire size and type of hitch.

TABLE 9: Maximum vertical load Tire Size Front

TG6370 Rear

ROPS/ Cab

Transmission Without front weight (kg)

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

Standard

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

Rear ROPS

HST

Turf 212 / 80D-15 Turf 355 / 80D-20

TG6400

With front weight (kg)

Without front weight (kg)

With front weight (kg)

305 - 315

509

-

-

315 - 320

509

-

-

260 - 270

509

-

-

240 - 245

450 - 455

-

-

-

-

320 - 325

509

-

-

325 - 335

509

-

-

275 - 285

509

-

-

250 - 260

465 - 470

315 - 320

509

-

-

320 - 325

509

-

-

270 - 275

509

-

-

Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

245 - 250

460 - 465

-

-

Turf 212 / 80D-15 Turf 355 / 80D-20

390 - 400

509

-

-

395 - 410

509

-

-

345 - 360

509

-

-

330 - 340

509

-

-

-

-

350 - 355

509

-

-

355 - 360

509

-

-

300 - 305

509

-

-

280 - 290

509

350 - 360

509

-

-

355 - 360

509

-

-

300 - 310

509

-

-

280 - 290

509

-

-

Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

Dual Clutch

Center ROPS

Standard

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 260 / 70R16

Turf 380 / 70R24

Agri 7-16

Agri 12.4-24

Agri 8-16

Agri 13.6-24

HST

Cabin

Dual Clutch

81

TG6370, 6400, 6490, 6620, 6670 Tire size Front

ROPS / Cab

Rear

Transmission

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 29X12.00-15 Turf 475 / 65D-20 Agri 8-16

Agri 13.6-24

Agri 9.5-16

Agri 13.6-28

Standard

Turf 212 / 80D-15 Turf 355 / 80D-20

Rear ROPS

Turf 29X12.00-15 Turf 475 / 65D-20 Turf 10 x 16.5

Turf 17.5L-24

Dual Clutch

Turf 280 / 70R16 Turf 420/70R24

TG6620 TG6670

TG6490 Without front weight (kg)

With front weight (kg)

Without front weight (kg)

With front weight (kg)

509

509

-

-

509

509

-

-

509

509

-

-

410 - 420

509

-

-

509

509

-

-

509

509

-

-

509

509

-

-

435 - 440

509

-

-

Agri 8-16

Agri 13.6-24

509

509

-

-

Agri 9.5-16

Agri 13.6-28

435 - 440

509

-

-

Agri 8-16

Agri 13.6-24

509

509

-

-

Agri 9.5-16

Agri 13.6-28

465 - 480

509

-

-

Turf 212 / 80D-15 Turf 355 / 80D-20

509

509

509

509

Turf 29X12.00-15 Turf 475 / 65D-20

509

509

509

509

509

509

509

509

435 - 450

509

430 - 435

509

509

509

509

509

435 - 450

509

430 -435

509

509

509

-

-

509

509

-

-

509

509

-

-

465 - 480

509

-

-

Turf 10 x 16.5

Center ROPS

Standard

Turf 17.5L-24

HST

Turf 280 / 70R16 Turf 420/70R24 Agri 8-16

Agri 13.6-24

Agri 9.5-16

Agri 13.6-28

Cabin

Turf 212 / 80D-15 Turf 355 / 80D-20 Turf 29X12.00-15 Turf 475 / 65D-20 Turf 10 x 16.5

Turf 17.5L-24

Dual Clutch

Turf 280 / 70R16 Turf 420/70R24 Agri 8-16

Agri 13.6-24

509

509

-

-

Agri 9.5-16

Agri 13.6-28

465 - 480

509

-

-

Front weight : 90 kg onto the front TABLE 10: Keep the permissible towable mass. When towing trailer, stay clear from the area between tractor and trailed vehicle.

TABLE 10: Permissible towable mass Total technically permissible towable mass Towable mass TG6370 TG6400

Total technically permissible masses of the tractor-trailer combination for each configuration of trailer braking

TG6490 TG6620 TG6670

TG6370 TG6400

TG6490 TG6620 TG6670

Unbraked

2,000 kg

4,450 kg

5,350 kg

Independently braked

3,500 kg

5,950 kg

6,850 kg

7,450 kg

11,350 kg

Not Applicable

Not Applicable

Inertia-braked Assisted braking system

5,000 kg

8,000 kg

Not Applicable

82

OPERATION COMFORT ADJUSTMENTS Steering Column Tilt FIG. 144: Steering column can be adjusted forward and backward to any 1 position out of 3 positions, enabling operator to select best steering wheel position.

While holding steering wheel with both hands, depress tilt locking pedal, 1, and select desired position. Release pedal and make sure column is securely locked by pedal returning to original position.

1 FIG. 144 Tool Box FIG. 145: Tool box, 1, is provided behind the seat back for tools. Open the lid and insert tools as needed.

1

NOTE: Only Cabin type equips the tool box.

FIG. 145

83

TG6370, 6400, 6490, 6620, 6670 SEAT & SUSPENSION ADJUSTMENT CAUTION: Make sure that the seat is adjusted before driving.

Do not attempt to adjust the seat during driving to avoid unexpected accident.

FIG. 146: COBO GT62 / M200

A

Driver’s Weight Adjustment, 1 The seat’s suspension settings is adjusted for the driver’s weight by turning driver’s weight adjustment control.

To increase the tension position, turn the driver’s weight adjustment control clockwise, A. To decrease the tension position, turn the driver’s weight adjustment control counterclockwise, B.

B

3

A

1

B

Height Adjustment, 2 The seat height is adjusted by turning height adjustment knob.

To increase the height position of the seat, turn the height adjustment knob counterclockwise, A. To decrease the height position of the seat, turn the height adjustment knob clockwise, B.

2 FIG. 146

Fore-Aft Adjustment, 3 The seat is slid forward or backward by pulling fore-aft adjustment lever.

FIG. 147: GRAMMER MSG83 / 521

A

Driver’s Weight Adjustment, 1 The seat’s suspension settings is adjusted for the driver’s weight by turning driver’s weight adjustment control.

To increase the tension position, turn the driver’s weight adjustment control clockwise, A. To decrease the tension position, turn the driver’s weight adjustment control counterclockwise, B.

B 3

1

Height Adjustment, 2 The seat height is adjusted by turning height adjustment knob.

2 FIG. 147

There are 4 height positions; (0) Upper height position (I) Lowest height position (II) Second height position (III) Third height position Fore-Aft Adjustment, 3 The seat is slid forward or backward by pulling fore-aft adjustment lever.

84

OPERATION FIG. 148: GRAMMER MSG93 / 521 Driver’s Weight and Height Adjustment, 1 The suspension of this seat is air suspension. The seat’s weight and height is adjusted for the driver’s weight by pulling and pressing weight and height adjustment button, 1.

To increase the tension and height of air suspension, sit on the seat and press weight and height adjustment button, 1.

2 1

To decrease the tension and height of air suspension, sit on the seat and pull weight and height adjustment button, 1.

FIG. 148

IMPORTANT: Air suspension uses compressor to inflate itself. Do not press weight and height adjustment knob for more than 1 minute to prevent damage of compressor.

Fore-Aft Adjustment, 2 The seat is slid forward or backward by pulling fore-aft adjustment lever.

FIG. 149: KAB XH2 / P6 Driver’s Weight Adjustment, 1 The seat’s suspension settings is adjusted for the driver’s weight by turning driver’s weight adjustment control.

To increase the tension position, set the black handle of driver’s weight adjustment control to (+) position, and move it.

To decrease the tension position, set the black handle of driver’s weight adjustment control to (+) position, and move it.

3 1

2

Height Adjustment, 2 The seat height is adjusted by moving height adjustment control.

To increase the height position of the seat, pull the height adjustment control first, and move it to right side.

To decrease the height position of the seat, pull the height adjustment control first, and move it to left side.

FIG. 149

Fore-Aft Adjustment, 3 The seat is slid forward or backward by pulling fore-aft adjustment lever.

85

TG6370, 6400, 6490, 6620, 6670 FRONT LOADER FIXATION POINT Consult your ISEKI dealer concerning the fixation points on tractor for the Front Loader. Appropriate frames between the rear axle and the front frame might be necessary to obtain robust safety.

FALLING OBJECTS PROTECTIVE STRUCTURE (FOPS) & OPERATORS PROTECTION STRUCTURE (OPS) FIXATION POINT Consult your ISEKI dealer concerning the fixation points on tractor for the FOPS & OPS. NOTE: FOPS and OPS are not standard equipment.

Work with Crop Sprayers (Risk of Hazardous Substances) Several models of this tractor may fit cabin for operator. This cabin does not provide protection against hazardous substances, such as agricultural chemical, and shall not be used under conditions requiring protection against it.

Levels of protection against hazardous substances: Category 1 according to EN 15695-1: 2009

TOWING Consult your ISEKI dealer for towing tractor as much as possible. If such cases as listed below, call your ISEKI dealer as transmission might be broken.

• Although the engine runs, tractor cannot start to move.

• Unusual noise occurs.

FIG. 150: Hook up the rope to the front hitch, 1. The distance between towing vehicle and tractor should be less than 5 m. Move the range shift lever to the neutral position. Release the parking brake lock.

1 FIG. 150

86

OPERATION JACKING When jacking tractor, place the tractor on level, hard ground which is sufficiently illuminated, otherwise unexpected accidents may occur. Follow the instructions listed below: • Apply parking brakes.

• Disengage all PTO. • Place all gear shift levers in neutral.

• Remove the starter key.

• Place the jack on level.

• Put tire chocks to the rear wheels when jacking up the front wheels.

• Put tire chocks to the front wheels when jacking up the rear wheels.

FIG. 151: When raising the rear axle, suitable shims, 1, should be wedged between the front axle and the front frame.

1

FIG. 151 FIG. 152: When raising the front axle, the jacking point is the front hitch, 2, or the front pivot, 3. For the rear axle, the jacking point is the rear hitch, 4

2

3 4

FIG. 152

87

TG6370, 6400, 6490, 6620, 6670 EXTERNAL AUXILIARY POWER SUPPLY CONNECTOR CAUTION: Select the proper size electric wire for auxiliary power supply. Insert a fuse to the wiring for the attachment when using the smaller capacity electrical wires than the proper size. Otherwise, the fuse cannot protect the wiring if there is a short circuit, and may result in the burning of the electric wiring and cause fire.

Auxiliary Power Supply Connector FIG. 153: Auxiliary power supply connector, 1, for attachment is located at right-hand side of the seat.

1

7 pins socket, 2, is connector for speed signal.

NOTE: Standard type tractor does not equip 7 pin socket, 2.

2

FIG. 153 7 Pins Socket FIG. 154: 7 pins socket, 3, is located at the rear side of the tractor.

3 NOTE: For ROPS type, 7 pins socket is located at left-hand side of the rear tractor. For CABIN type, it is located at right-hand side of the rear tractor.

FIG. 154 EDT CONNECTOR (TG6620 / 6670) FIG. 155: EDT connector, 1, for engine diagnostic tool is located under steering column.

NOTE: Except for TG6620 / 6670 do not equip EDT connector.

1 FIG. 155 88

INSTRUMENTS & CONTROLS & OPERATION

INSTRUMENTS & CONTROLS & OPERATION - CABIN TYPE 1

4

3

3 2

3

5

6

8

7

9

FIG. 156 FIG. 156: General layout and location on Cabin.

1.

2.

3.

4.

5.

Air conditioner panel Front fresh air vents Side fresh air vents Room lamp Speaker

6.

7.

8.

9.

89

Front wiper / washer switch Rear wiper / washer switch (Option) Front work lamp switch Rear work lamp switch

TG6370, 6400, 6490, 6620, 6670 OPENING / CLOSING DOORS FIG. 157: To open the door from outside, push the door lock button, 1, and pull the handle, 2.

1 2

FIG. 157 FIG. 158: To open the door from inside the cabin, move the door lever, 3, backward and push door frame, 4.

To close the door, grasp the door handle, 2, or door frame, 4, and close slowly.

3

CAUTION: When closing the door, be sure to keep hands and fingers out of the way.

CAUTION: Do not operate tractor with the door fully or partially open.

4 CAUTION: At the time of emergency, escape from either right or left door. If both doors cannot be opened, escape from the rear window.

FIG. 158

LOCK / UNLOCK DOORS FIG. 159: To lock the door, insert the key into the keyhole in the door lock button and turn 90 degrees counterclockwise, 1. Pull the key out in the horizontal position.

To unlock the door, insert the key and turn 90 degrees clockwise, 2. Pull the key out in the vertical position.

2

1 NOTE: It is not possible to lock or unlock the door from inside the cab.

FIG. 159

90

INSTRUMENTS & CONTROLS & OPERATION FIG. 160: When getting on or off the tractor, use the handle, 1, and footstep, 2.

1

CAUTION: Do not put your weight on the door damper, 3, when getting on or off the tractor.

3

2

FIG. 160 REAR WINDOW FIG. 161: Grasp the handle, 1, and turn 90 degrees clockwise to unlock the window. To open, push the rear window out slightly. The window will open and is held in place by the damper.

IMPORTANT:

1

Before opening the rear window, make sure of the situation at the rear of the tractor.

FIG. 161

FIG. 162: To close the rear window, pull toward inside with the handle in the unlock position until the window can be locked securely. Then turn the handle 90 degrees counterclockwise, 1, to lock the window.

CAUTION: When closing the rear window, be sure to keep hands and fingers out of the way.

1 IMPORTANT:

Make sure the handle is in the unlock position when closing the rear window.

Damage to the handle may result if the rear window is closed with the handle in the lock position.

FIG. 162

91

TG6370, 6400, 6490, 6620, 6670 CORNER WINDOWS The corner windows in left and right sides can be opened and closed.

FIG. 163: Grasp the handle, 1, and turn 90 degrees to unlock the window (Position A). To open, push the corner window out slightly (Position B). The window will open and is held in place by the damper.

1

B A

FIG. 163 FIG. 164: To close the corner window, pull toward inside with the handle in the unlock position until the window can be locked securely (Position C). Then turn the handle 90 degrees, 1, to lock the corner window (Position D).

1

CAUTION: When opening and closing the corner windows, make sure to use the handle to prevent fingers from getting caught in window linkage.

IMPORTANT:

C D

When driving on the road, be sure to close and securely lock the corner windows. Failure to do so may result in damage to the windows.

FIG. 164

ROOM LAMP FIG. 165: The room lamp, 1, is located at the top of the cab. The switch, 2, turns the lamp on and off.

2

1

FIG. 165

92

INSTRUMENTS & CONTROLS & OPERATION WORK LAMPS The work lamps will light up the working area in front and rear of the cab.

FIG. 166: To turn on the work lamp, press the upper part of the switch, 1, to ON for the front work lamp, and press the upper part of the switch, 2, to ON for the rear work lamp. The switch LED will be on.

Press the lower part of the switch to OFF to turn off the work lamp.

NOTE: When stopping the engine, be sure to turn off the work lights to prevent the discharging battery.

1

FIG. 166 FIGS. 167 & 168: Adjust the direction of the light beam as follows.

• Loosen the mounting bolts and move the light up and down or right and left.

• Tighten the mounting bolts after adjustment.

FIG. 167

FIG. 168

93

2

TG6370, 6400, 6490, 6620, 6670 WIPER AND WASHER SWITCH FIG. 169: Press the upper part of the switch, 1, to start the front wiper. Press the upper part of the switch, 2, to start the rear wiper (option). Press harder to release the washer fluid while the wiper blade is moving back and forth.

Press the lower part of the switch to stop the window shield wiper. Press the lower part of the switch harder to release the washer fluid only.

IMPORTANT:

Do not use the wiper for an extended time with the engine shut off.

IMPORTANT:

If the wiper blade is frozen, remove ice before using.

2

1

FIG. 169

FIG. 170: The front washer nozzle, 3, is located on the outside of the cab on the upper right-side corner. The front wiper, 4, is located on the outside of cab below the operator’s view.

4 3

FIG. 170 FIG. 171: The rear wiper (option), 5, is located on the outside of cab at the top corner of the rear window.

5

FIG. 171

94

INSTRUMENTS & CONTROLS & OPERATION WASHER RESERVOIR

FIG. 172: The washer reservoir port, 1, is located at the rear left-hand side. Use automobile washer fluid to replenish the washer fluid level.

1

FIG. 172 AIR CONDITIONER OPERATION FIG. 173: Air conditioner panel is located in the upper right-hand corner of the cab.

(1) Fan speed control switch.

(2) Air conditioner button.

(3) Temperature adjustment lever.

(4) Ventilation control lever.

1

4

2

3 FIG. 173

Fan Speed Control Switch FIG. 174: The fan speed can be adjusted to 3 levels by changing the fan speed control switch position to 1, 2 and 3.

4

1

2

Turn the switch to the OFF position, 4, to stop the fan.

FIG. 174

95

3

TG6370, 6400, 6490, 6620, 6670 Air Conditioner Button FIG. 175: To turn on the air conditioner, press the button, 1. The air conditioner button, 2, illuminates when air conditioner is operating. To operate the air conditioner, turn the fan speed control switch to ON position.

2

1

To turn off the air conditioner, press the button again.

FIG. 175 Temperature Adjustment Lever FIG. 176: Adjust the air temperature by moving the temperature adjustment lever, 1, from COOL (left-side) to WARM (right-side) or anywhere in between.

1

FIG. 176 Ventilation Control Lever FIG. 17: The ventilation control lever, 1, is used to switch between outside air and recirculated air.

1 (outside air) - Air ventilation allowing fresh air from outside. This setting is used for normal operation or when the windows are foggy.

(recirculated air) - Air circulation without fresh air from outside. This setting is useful to make the air conditioning more efficient.

FIG. 177

96

INSTRUMENTS & CONTROLS & OPERATION Air Vents FIG. 178: Side fresh air vents - 4 vents, 2 on the left side, 1, and 2 on the right side, 2, of the cab, blow air toward the sides of the operator. Each vent moves to allow the air flow direction to be changed.

2

1 FIG. 178 FIG. 179: Front fresh air vents, 3 - 2 vents at the front of the cab blow air toward the front window to help defrost the front window or prevent from fogging.

3 FIG. 179 FIG. 180: Adjusting the air flow direction

1 (1) Left and right (2) Up and down (3) Front and rear

3

3

1 FIG. 180

97

TG6370, 6400, 6490, 6620, 6670 Using the Cooling System FIG. 181: Set the ventilation control lever, 1, to

.

4

Set the temperature adjustment lever, 2, to the coolest position. To turn on the air conditioner, press the air conditioner button, 3.

1

Turn the fan speed control switch, 4, to the desired speed. Cool air will blow for the upper and side air vents to cool and dry the air in the cab.

Adjust fan speed, direction of air flow and temperature as necessary.

3

2

When the temperature becomes comfortable, switch . the ventilation control lever, 1, to

FIG. 181

Using the Heating System FIG. 182: Set the ventilation control lever, 1, to .

Set the temperature adjustment lever, 2, to the warmest position.

4

1

3

2

Turn off the air conditioner by pressing the air conditioner button, 3.

Turn the fan speed control switch, 4, to the desired speed. Warm air will blow from the front air vents to heat the cab.

Adjust the fan speed, direction of air flow and temperature as necessary.

When the temperature becomes comfortable, switch . the ventilation control lever, 1, to

FIG. 182

When the air is humid, turn on the air conditioner and set the switch levers as shown. Warm air blow from the front air vents and remove humidity in the cab.

Using the Defrosting System FIG. 183: Set the ventilation control lever, 1, to .

Set the temperature adjustment lever, 2, to the warmest position. To remove fog from the windows, turn on the air conditioner. Warm air will blow from the front air vents.

3

1

NOTE: When the air conditioner is not in use, set the fan speed control switch, 3, to OFF position.

2 FIG. 183 98

LUBRICATION & PERIODIC MAINTENANCE

LUBRICATION & PERIODIC MAINTENANCE SPECIFICATIONS & CAPACITIES Engine Oil Use oil of the quality recommended by ISEKI. API Service “CC” (TG6370 / 6400), API Service “CD” (TG6490), API Service “CF-4” (TG6620/6670).

Capacity (Crankcase and Filter) TG6370......................................................................................................................................................... 5.4 liters TG6400......................................................................................................................................................... 4.7 liters TG6490......................................................................................................................................................... 7.9 liters TG6620/6670................................................................................................................................................ 5.8 liters Recommended Viscosity (TG6370 / 6400 / 6490): 25 °C and Above ..........................................................................................................................SAE 30W, 10W-30 0°-25 °C ........................................................................................................................................SAE 20W, 10W-30 0 °C ..............................................................................................................................................SAE 10W, 10W-30 15W-40 may be used in ambient temperatures above -10 °C Recommended Viscosity (TG6620 / 6670): 25 °C (77 °F) and Above ............................................................................................. SAE 40, 15W - 40, 20W - 40 0 °C (32 °F) - 30 °C (86 °F) ........................................................................ SAE 30, 10W - 30, 15W - 40, 20W - 40 -15 °C - 15 °C (5°F - 59 °F) ................................................................ SAE 20, 20W, 10W - 30, 15W - 40, 20W - 40 -20 °C - 0 °C (-4°F - 32 °F) ....................................................................................................... SAE 10W, 10W - 30 Recommended Change Interval (Engine Oil) ........................................ 50 hours initial, every 200 hours thereafter Recommended Change Interval (Engine Oil Filter) ............................... 50 hours initial, every 300 hours thereafter Engine Coolant Capacity TG6370 / 6400.............................................................................................................................................. 6.7 liters TG6490 / 6620 / 6670................................................................................................................................... 7.6 liters Freezing Protection (Original Factory Fill) .......................................................................................... -34 °C (-29 °F) Recommended Coolant ........................................................................... 50 / 50 mixture ethylene glycol and water Fuel Tank Capacity TG6370 / 6400............................................................................................................................................ 40.0 liters TG6490 / 6620 / 6670................................................................................................................................. 53.0 liters Fuel Recommended, Above 4 °C (39 °F) ....................................................................................... No. 2 or No. 2-D Fuel Recommended, Below 4 °C (39 °F) ....................................................................................... No. 1 or No. 1-D Transmission & Differential Housing (Including Hydraulic System) Capacity TG6370 (Standard type) ............................................................................................................................. 31.0 liters TG6370 (Dual clutch type).......................................................................................................................... 38.0 liters TG6400....................................................................................................................................................... 31.0 liters TG6490 (Standard / HST type)................................................................................................................... 38.0 liters TG6490 (Dual clutch type).......................................................................................................................... 40.0 liters TG6620 / 6670............................................................................................................................................ 38.0 liters Recommended Lubricant ................................. Shell Spirax S4 TXM (Old name : Shell DONAX TD) or equivalent Recommended Change Interval ............................................................. 50 hours initial, every 400 hours thereafter

99

TG6370, 6400, 6490, 6620, 6670 Front Axle Capacity TG6370 / 6400.............................................................................................................................................. 7.5 liters TG6490 / 6620 / 6670................................................................................................................................... 8.0 liters Recommended Lubricant ..................................................................................................................... SAE 80 GL-4 Recommended Change Interval ...................................................................................................... Every 600 hours Grease Fittings Grease Interval (All Fittings) .............................................................................................................. Every 50 hours Recommended Grease ................................................... Gadus S2V 2202 (Old name : Lithium base grease No. 2) NOTE: Change intervals stated above are for normal usage. Due to adverse operating conditions that may be experienced (extremely dusty or muddy), change intervals may need to be more frequent.

LUBRICATION / FILL POINTS (TG6370 / 6400)

TG6370 / 6400

FIG. 184: General layout of lubrication, fill and drain locations on tractor: TABLE 11: Type of lubrication (TG6370 / 6400) Ref. 1 2 3 4 5 6 7 8 9 10

Description: Crankcase Engine Radiator Radiator Reserve Tank Fuel Tank Rear Housing 4WD Axle Axle Pivots (4WD) Tie Rod Ends Clutch Shaft Brake Pivots

Type: Engine Oil Coolant Coolant Diesel Fuel Hydraulic Oil Hydraulic Oil Grease Grease Grease Grease

Fill Point Grease Point Drain Point

FIG. 184 100

LUBRICATION & PERIODIC MAINTENANCE LUBRICATION / FILL POINTS (TG6490 / 6620 / 6670)

TG6490 / 6620 / 6670

FIG. 185: General layout of lubrication, fill and drain locations on tractor: TABLE 12: Type of lubrication (TG6490 / 6620 / 6670) Ref. 1 2 3 4 5 6 7 8 9 10 11 12

Description: Crankcase Engine Radiator Radiator Reserve Tank Fuel Tank Rear Housing 4WD Axle Axle Pivots (4WD) Front Spindles (4WD) Tie Rod Ends Clutch Shaft Brake Pivots Assist Cylinder

Type: Engine Oil Coolant Coolant Diesel Fuel Hydraulic Oil Hydraulic Oil Grease Grease Grease Grease Grease Grease

Fill Point Grease Point Drain Point

FIG. 185

101

TG6370, 6400, 6490, 6620, 6670 PERIODIC INSPECTION AND MAINTENANCE TABLE  : Inspect, replenish or adjust  : Replace  : Clean or wash  : Replacement or servicing at authorized service facility recommended.

3

Air cleaner element



4

Reserve tank coolant / level



5

Radiator

6

Radiator hose



7

Fuel filter



8

Fuel pipe hose



9

Fan belt



10 Battery condition 11











Replace after initial 50 hours and then every 200 hours.



Replace after initial 50 hours and then every 300 hours.



















Replace once every 2 years.



Flush once every 2 years.



Replace once every 2 years at your dealer.

Clean as required.

Replace once a year or every 400 hours.

Replace as required.

Inspect every 200 hours.

Charge or replace as required.

 

Clean or replace as required.

Replace once a year.

Replace as required.



Transmission oil filter

Tractor

14 Front axle oil



Remarks





Engine valve clearance

12 Transmission oil 13



1 / 2 years



1 / Year



1 / Month

Engine oil filter



600 Hours

2



500 Hours



400 Hours



300 Hours

Engine oil

200 Hours

1

100 Hours

First Inspection

Engine

Before Operation

TABLE 13: Maintenance table

Inspect every 600 hours.





Replace after initial 50 hours and then every 400 hours.





Wash after initial 50 hours and then every 400 hours. Replace as required.









Inspect every 200 hours.

Replace every 600 hours.

15

Free-play of clutch pedal









Inspect and adjust every 200 hours.

16

Free-play of brake pedal









Inspect and adjust every 200 hours.







Inspect and adjust every 200 hours.

If there is abnormality, consult your dealer.

17 Steering joint

102

LUBRICATION & PERIODIC MAINTENANCE

1 / 2 years

1 / Year

1 / Month

600 Hours

500 Hours

400 Hours

300 Hours

200 Hours

100 Hours

First Inspection

Before Operation

 : Inspect, replenish or adjust  : Replace  : Clean or wash  : Replacement or servicing at authorized service facility recommended.

Remarks

Tractor

18 Toe-in adjustment







Inspect and adjust every 200 hours.

If there is abnormality, consult your dealer.

19

Tightening of tierod ends







Inspect and adjust every 200 hours.

If there is abnormality, consult your dealer.

20

Front / rear play of front axle



Inspect every 600 hours.



Inspect / add air every 200 hours.



Inspect every 100 Hr.



21 Tire air pressure





22 Tighten wheel lugs





 



 







23 Electrical wiring



Inspect once a year.

Inspect once every 2 years at your dealer.



Inspect every 100 hours.

Replace once / 2 years.

24

Power steering hose



25

Horizontal cylinder hose





Replace once every 2 years.





Replace once every 2 years.

26 Auto brake hose













Inspect every 200 hours.









Clean every 200 hours.

Cabin

31

Air conditioner filter



32

Window washer liquid







28 Air conditioner belt

Air conditioner hose and pipe







30







Air conditioner condenser





27 Replenish grease

29









Grease before & after operation.



Inspect once a year.



Inspect once a month.

Check before operation.

33 Rubber bush



34 Wiring harness



103

Inspect once a year. 

Inspect once a year.

Check once every 2 years.

TG6370, 6400, 6490, 6620, 6670 SERVICE ACCESS CAUTION: Shut off engine before servicing tractor. Engine hood must be secured prior to operating tractor.

To access radiator, battery and engine components, engine hood can be opened.

Opening / Closing Hood FIG. 186: To open the hood, pull the open lever, 1, toward oneself. Lift up the front of the hood, and hood is hold automatically.

TG6370 / 6400 / 6490

TG6620 / 6670

1 1 FIG. 186 FIG. 187: To close the hood, pull down on the front of the hood. Make sure that the open lever is in the locked position, 2.

2

FIG. 187

Removing / Reinstalling Side Cover FIG. 188: To remove side cover, pull out the top of the side cover, 3, and then lock can be disengaged.

The cover can be removed by slipping the side cover off of the 2 hinges on the bottom.

When reinstalling the side cover, place the cover on the hinges at the bottom, and push on the top.

3

The side cover (another side) can be removed with the same procedure.

IMPORTANT: The muffler is adjacent to the left side cover. Make sure to allow it to cool before removing.

FIG. 188

104

LUBRICATION & PERIODIC MAINTENANCE LUBRICATION DETAILS Grease Fittings Lubricate all grease fittings every 50 hours of operation. Clean grease gun and fittings before and after greasing to prevent contamination from dirt.

NOTE: When operating in muddy or extremely wet conditions, daily lubrication of fittings is recommended.

Engine Oil & Filter (TG6370 / 6400 / 6490)

OF

Engine oil and filter should be changed after first 50 hours of operation and then every 200 hours for engine oil and every 300 hours for engine oil filter hereafter.

F: Full

2 LO

FIG. 189: To Check Engine Oil Level - Park tractor on level ground. Make sure to allow the engine to cool sufficiently before checking the engine. Pull out dipstick, 1, and check that oil level is between upper limit, F, and lower limit, L, on dipstick. Wipe off dipstick, momentarily reinstall in engine and check oil level again.

L: Lower

1

Add oil through filler opening, 2, as required.

FIG. 189

NOTE: Add oil slowly to assist in venting air from crankcase.

FIG. 190: To Change Engine Oil - Operate tractor until oil is adequately warmed. Remove drain plug(s), 3, from engine and allow all oil to drain.

Reinstall drain plug(s) and fill engine crankcase through filler opening, 2, to upper limit on dipstick.

3 FIG. 190 FIG. 191: To Replace Engine Oil Filter - Remove engine oil filter, 4, from engine and take the old filter to a proper disposal point. Make sure that original filter gasket has been removed.

Lubricate new gasket on the new element with clean engine oil. Turn in new element until gasket contacts adapter. Use a filter wrench to further turn in the element by 1/ 2 turn.

Clean spilled oil and refill crankcase. Start engine, check for leaks and replenish oil level as required.

4 FIG. 191 105

TG6370, 6400, 6490, 6620, 6670

FIGS. 192 & 193: To Check Engine Oil Level - Park tractor on level ground. Make sure to allow the engine to cool sufficiently before checking the engine. Pull out dipstick, 1, and check that oil level is between upper limit, F, and lower limit, L, on dipstick. Wipe off dipstick, momentarily reinstall in engine and check oil level again.

OF

Engine oil and filter should be changed after first 50 hours of operation and then every 200 hours for engine oil and every 300 hours for engine oil filter hereafter.

F: Full

LO

Engine Oil & Filter (TG6620 / 6670)

L: Lower

1

FIG. 192

Add oil through filler opening, 2, as required.

NOTE: Add oil slowly to assist in venting air from crankcase.

2 FIG. 193 FIG. 194: To Change Engine Oil - Operate tractor until oil is adequately warmed. Remove drain plug(s), 3, from engine and allow all oil to drain.

Reinstall drain plug(s) and fill engine crankcase through filler opening, 2, to upper limit on dipstick.

3

FIG. 195: To Replace Engine Oil Filter - Remove the oil filter, 4, from the engine and take the old filter to a proper disposal point. Make sure that the original filter gasket has been removed.

FIG. 194

Lubricate the new gasket on the new element with clean engine oil. Turn in the new element until its sealed face comes in contact with the O-ring. Use a filter wrench to further turn in the cartridge by 3/4 turn.

Clean spilled oil and refill the crankcase. Start the engine, check for leaks and replenish oil level as required.

IMPORTANT : Engine warranty is valid only when original engine maker manufacturer’s oil filter is used.

4 FIG. 195 106

LUBRICATION & PERIODIC MAINTENANCE Transmission Oil & Filters Transmission oil lubricates transmission, center housing, and rear axles and also serves as hydraulic fluid.

Transmission oil and filter should be changed after first 50 hours of operation and then every 400 hours thereafter.

2 1

FIG. 196: To Check Transmission Oil Level - Park tractor on level ground. Oil level should be indicated in oil level window, 1.

Oil level is replenished, as necessary, by removing filler plug, 2, and adding oil through filler opening.

NOTE: Adding oil to transmission will also maintain correct oil level in center housing and rear axles.

FIG. 196

FIG. 197: To Replace Transmission Oil - Remove drain plug, 3, and completely drain oil from system.

IMPORTANT:

Completely lower 3-point hitch prior to draining transmission oil.

3 FIG. 197 FIG. 198: To Clean Transmission Oil Filter (Standard Type) - With oil drained, unscrew transmission oil filter, 4, from adapter (filter wrench may be required), and transmission oil suction filter, 5 from transmission case.

Clean it, dry thoroughly and reinstall. If filter is damaged, replace it with new one.

Install until filter gasket contacts adapter and tighten additional 2 / 3 turn, by hand. Do not use filter wrench to tighten. Oil filter cartridge includes magnetic cartridge.

5

4 FIG. 198

NOTE: After transmission oil has been replaced, or when the tractor restart after a long term of storage, or when the hydraulic system does not operate properly, consult your dealer.

107

TG6370, 6400, 6490, 6620, 6670 FIG. 199: To Clean Transmission Oil Filters (HST Type) - With oil drained, unscrew transmission oil filter, 6, from adapter (filter wrench may be required), and transmission oil suction filter, 7 from transmission case.

Clean them, dry thoroughly and then reinstall them. If filter is damaged, replace it with new one.

6

Install until filter gasket contacts adapter and tighten additional 2 / 3 turn, by hand. Do not use filter wrench to tighten. Oil filter cartridge includes magnetic cartridge.

7 FIG. 199

NOTE: After transmission oil has been replaced, or when the tractor restart after a long term of storage, or when the hydraulic system does not operate properly, consult your dealer.

FIG. 200: To Clean Transmission Oil Filters (Dual Clutch Type) - With oil drained, unscrew transmission oil suction filter, 8 from transmission case.

Clean them, dry thoroughly and then reinstall them. If filter is damaged, replace it with new one.

Install until filter gasket contacts adapter.

8

NOTE: After transmission oil has been replaced, or when the tractor restart after a long term of storage, or when the hydraulic system does not operate properly, consult your dealer.

FIG. 200

Front Axle Oil Front drive axle has a common oil level for front differential housing and each wheel reduction unit. Oil level should be checked every 200 hours of tractor operation. The oil should be changed every 600 hours of operation.

FIG. 201: To Check Oil Level - Park tractor on level ground and then remove oil level plug, 1. Oil should be level with or slightly below level plug opening. Remove fill plug, 2, and add oil until oil is expressed from level plug opening. Replace level plug and fill plug.

2 1

To Change Oil - Park tractor on level ground. Remove drain plug, 3, from both wheel reduction units.

When all oil has drained, replace drain plugs and fill housing to level plug opening. Replace level plug and fill plug.

3 FIG. 201

108

LUBRICATION & PERIODIC MAINTENANCE COOLING SYSTEM CAUTION: Do not open the radiator cap except when checking or replacing the coolant. Make sure to allow the engine to cool sufficiently before opening the cap. If the cap is opened while the engine is hot, coolant may be discharged, resulting in a burn or other injury.

Checking / Replenishing Coolant FIG. 202: The radiator is provided with a reserve tank, 1, to maintain the coolant in the radiator at the proper level. Check the level in this reserve tank during the daily inspection.

2 1

Open the hood, and make sure that the coolant in the reserve tank is between FULL and LOW levels. If the coolant level is near to the LOW level, add coolant to the reserve tank up the FULL level.

When the coolant level is below the LOW level, remove the radiator cap, 2, after allowing the engine to cool sufficiently. Add coolant and make sure that there is an adequate amount of coolant in the radiator.

FIG. 202 IMPORTANT: Do not fill the reserve tank higher than the FULL level. This will prevent the radiator from functioning optimally, and may result in leakage of coolant.

Flushing Radiator / Replacing Coolant FIG. 203: Open the drain cock, 1, at the right side of the engine to drain coolant. Open the radiator cap, 2, at the same time to help allow the coolant to drain.

Remove the reserve tank, 3, to drain coolant from it.

Thoroughly flush out the inside of the radiator with tap water.

1

Close the drain cock, 1, and pour coolant into the reserve tank up to the FULL level to fill the radiator.

FIG. 203 FIG. 204: Securely close the radiator cap, 2, and reserve tank cap, and start the engine, allowing it to run for about 5 minutes in the mid speed range (Approx.

1500 min-1). Then stop the engine.

2 3

When the engine cools, the coolant in the reserve tank will be sucked into the radiator.

Add coolant to the reserve tank up to the FULL level

FIG. 204 109

TG6370, 6400, 6490, 6620, 6670 Use of Anti-Freeze Freezing of the coolant may result in damage to the engine. Mix in 50/50anti-freeze (Long Life Coolant) when the outside temperature will drop below 0 °C (32 °F) during the winter.

The mixture ratio of anti-freeze differs depending upon the anti-freeze manufacturer and temperature. Follow the instruction for the anti-freeze.

Cleaning of Radiator WARNING: Make sure to stop the engine when cleaning the radiator. Placing your hands in this area while the engine is operating may result in serious injury.

FIG. 205: Cleaning Radiator Net When the tractor is operated in fields or at night, radiator net may become clogged with grass, straw, insects and other matter. Park the tractor on level, and open the hood. Pull out the radiator net, 1, and clean it.

1 2

Cleaning Radiator Core Wash away any dirt or other foreign matter in the fins and the radiator core, 2, with water.

IMPORTANT: When the radiator becomes clogged, it will overheat, resulting in increased oil consumption.

FIG. 205

Be careful not to apply high pressure water directly to the radiator as this may result in deformation of the fins.

Do not directly spray water on the electrical wiring or electrical parts around the engine.

110

LUBRICATION & PERIODIC MAINTENANCE Fan Belt FIG. 206: Correct fan belt tension helps to insure adequate coolant flow through the cylinder block and radiator.

(TG6370 / 6400 / 6490) The belt is correctly tensioned when belt deflection is approximately 14 mm (0.551 in) as shown at “x” when thump pressure (10 kgf) is exerted at the center of belt span.

(TG6620 / 6670) The belt is correctly tensioned when belt deflection is approximately 5 mm (0.197 in) as shown at “x” when thump pressure is exerted at the center of belt span.

FIG. 206

CAUTION: Due to muffler position, allow it to cool before checking or adjusting fan belt tension.

FIG. 207: To adjust belt tension, loosen alternator pivot bolt, 1, and tensioning bracket bolt, 2. Pull outward on top of alternator to correctly tension belt and tighten bolt, 2, first and then tighten pivot bolt, 1.

2

IMPORTANT: Do not pry against alternator housing or pulley. Carefully pry against alternator mounting flange to prevent damage.

1

FIG. 207

111

TG6370, 6400, 6490, 6620, 6670 ENGINE AIR CLEANER IMPORTANT:

Never operate the engine with the air filters removed.

Cleaning Air Cleaner / Vacuator Valve FIGS. 208 & 209: The engine air cleaner, 1, is located above the engine. To service the engine air cleaner, gain access, open the hood.

1

4

Press the vacuator valve, 2, to discharge any dirt inside. Release clips, 3. Remove cover, 4, and take the element, 5, out of the air cleaner.

If there is moisture, wipe the inside of the air cleaner, 1.

If the element, 5, is damaged, replace it.

IMPORTANT:

2 3

Do not hit the filter element against a rock, concrete or other hard item when cleaning it. This may result in damage or deformation of the filter element, inhibiting engine performance.

FIG. 208

NOTE: For TG6620 / 6670, air cleaner faces to a side opposite to illustrations on the right.

5

FIG. 210: Element can be cleaned (if in serviceable condition) using following procedures: FIG. 209

• Using compressed air not to exceed 200 kPa (30 psi) from the inside of the element, remove loose dirt, grass, chaff, etc. Be careful not to damage element pleats with air flow.

• If the outer element is coated with oil or soot: 1. Prepare solution of warm water and non-foaming detergent.

2. Soak the element for 30 minutes.

3. Agitate the element in solution until oil and soot are loosened.

4. Rinse the element until rinse water is clear.

5. Allow the element to completely dry. Do not dry by using compressed air or heat.

• After cleaning (or washing) the element examine for pin holes, punctures, or tears. If the element paper, canister or seal show any signs of physical damage, the element must be replaced.

FIG. 210

NOTE: Replace an element which has already been washed 5 times.

112

LUBRICATION & PERIODIC MAINTENANCE FUEL SYSTEM (TG6370 / 6400 / 6490) Use only clean diesel fuel of correct grade. Introduction of water or dirt into fuel tank or other portion of fuel system can cause repeated plugging of fuel filter and possible injection pump and injector damage.

IMPORTANT:

Do not tamper with injection pump or injector adjustment. Such tampering will spoil engine itself and / or cause severe engine damage. And warranty will not be covered for the machine with such tampering.

Fuel Filter FIG. 211: Fuel filter assembly, 1, is located at right side of engine and is used to strain impurities from fuel before fuel reaches injection pump. Fuel filter incorporates valve, 2, to aid in filter servicing and air bleeding of fuel system.

Check filter bowl for accumulation of sediment or water and clean as required.

FIG. 211 FIG. 212: To replace fuel filter element or clean sediment, turn fuel valve to OFF position (handle to front).

Carefully loosen ring nut, 1, Remove nut, sediment bowl, 2, and O-ring, 4. Sediment bowl can be cleaned at this time. Pull downward on filter element, 3, and discard. Examine small O-ring, 5, in filter head and replace as necessary. Install new element, pushing upward until seated.

Install sediment bowl O-ring, and nut. Tighten nut and wipe up spilled fuel.

FIG. 212

113

TG6370, 6400, 6490, 6620, 6670 Air-Bleeding Fuel System FIG. 213: To bleed air from the fuel system: • Fill the fuel tank.

• Turn the main switch “ON” and turn the fuel cock to “AIR”.

If the engine still fails to start, pressure injection line can be loosened where they attach to the injectors.

Turn the engine over several times, until fuel spouts out, then tighten the lines and stop the engine.

NOTE: Normally, further air-bleeding is not required due to electric fuel pump operating when main switch in instrument panel is ON.

FIG. 213

If engine will not start after several attempts, check fuel pump fuses (see “Electrical System”).

Fuel Tank Filler Cap FIG. 214: When fuel tank filler cap,1, is removed, a hissing or popping noise may be noticed. This is due to cap design and is a normal condition. Do not alter cap or use unapproved replacement as fuel leakage may occur in event of tractor upset.

1

FIG. 214

Throttle Lever FIG. 215: Hand throttle lever,1, should remain in position selected by operator. Through normal use, friction against lever may decrease, causing lever to move out of selected position. Turn adjusting nut, 2, as required to retain throttle lever in position selected.

NOTE: Hand throttle lever friction adjustment nut is accessed by removing rear steering column cover.

2 1 FIG. 215

114

LUBRICATION & PERIODIC MAINTENANCE FUEL SYSTEM (TG6620 / 6670) Use only clean diesel fuel of correct grade. Introduction of water or dirt into fuel tank or other portion of fuel system can cause repeated plugging of fuel filter and possible injection pump and injector damage.

IMPORTANT:

Do not tamper with injection pump or injector adjustment. Such tampering will spoil engine itself and / or cause severe engine damage. And warranty will not be covered for the machine with such tampering.

Fuel Filter FIGS. 216 & 217: Fuel filter, 1, is located on the righthand side of the engine. Pre-filter, 2, is located on the right-hand side step.

3

Fuel filter assembly, 1, is located at right side of engine and is used to strain impurities from fuel before fuel reaches injection pump. Fuel filter incorporates valve, 3, to aid in filter servicing and air bleeding of fuel system.

1

Check filter bowl for accumulation of sediment or water and clean as required.

FIG. 216

2

FIG. 217 FIG. 218: To replace the fuel filter element or clean sediment, turn fuel valve to OFF position (handle to front).

5

Remove the nut, sediment bowl, 4, and O-ring, 5.

Sediment bowl can be cleaned at this time. Pull downward on the filter element, 6, and discard. Examine the small O-ring, 7, in the filter head and replace as necessary. Install new element, pushing upward until seated. Install sediment bowl O-ring and nut. Tighten the nut and wipe up spilled fuel

7

6 4

FIG. 218

115

TG6370, 6400, 6490, 6620, 6670 Air-Bleeding Fuel System FIG. 219: To bleed air from the fuel system: • Fill the fuel tank.

• Turn the main switch “ON” and turn the fuel cock to “AIR”.

If the engine still fails to start, pressure injection line can be loosened where they attach to the injectors.

Turn the engine over several times, until fuel spouts out, then tighten the lines and stop the engine.

NOTE: Normally, further air-bleeding is not required due to electric fuel pump operating when main switch in instrument panel is ON.

FIG. 219

If engine will not start after several attempts, check fuel pump fuses (see “Electrical System”).

Fuel Tank Filler Cap FIG. 220: When fuel tank filler cap,1, is removed, a hissing or popping noise may be noticed. This is due to cap design and is a normal condition. Do not alter cap or use unapproved replacement as fuel leakage may occur in event of tractor upset.

1

FIG. 220

Throttle Lever FIG. 221: Hand throttle lever,1, should remain in position selected by operator. Through normal use, friction against lever may decrease, causing lever to move out of selected position. Turn adjusting nut, 2, as required to retain throttle lever in position selected.

NOTE: Hand throttle lever friction adjustment nut is accessed by removing rear steering column cover.

2 1 FIG. 221

116

LUBRICATION & PERIODIC MAINTENANCE ELECTRICAL SYSTEM Battery FIG. 222: Battery, 1, is located under engine hood in front of radiator.

When battery is removed, electrolyte inspection or cable cleaning is necessary.

1

Keep top of battery clean and ensure cable connections are clean and tight. Debris on battery can cause discharge of battery and possible source of fire.

CAUTION: Batteries produce explosive hydrogen gas when charged. Keep all sparks and open flame away from battery.

FIG. 222

When necessary to disconnect battery cables, always disconnect the grounded (-) cable first to prevent short circuits.

Batteries contain sulfuric acid electrolyte (fluid). Wear eye and face protection. If electrolyte comes in contact with skin or clothes, wash immediately. Contact a doctor if electrolyte is ingested or gets in eyes.

When the battery performance is weak, remove the battery and charge the battery, and follow instruction for the battery charger.

Repeated battery charging may be due to a defect in tractor charging system and / or a defective battery.

WARNING: Never disassemble battery.

Batteries contains sulfuric acid electrolyte (fluid). Keep away from sparks or flames, which could cause explosion.

When charging battery from an external source, Set charging voltage below 16V. Set charging ampere below 1/10 of the battery capacity. Prevent overcharge. Battery temperature must not exceed 113°F (45°C).

When connecting and disconnecting battery cables, turn off power of battery charger. If you have any question about battery, consult your dealer.

117

TG6370, 6400, 6490, 6620, 6670 IMPORTANT: Do not quick-charge the battery, or it may damage the battery and decrease its performance.

IMPORTANT:

Charge the battery before the first use of this tractor.

IMPORTANT: When storing tractor for long period without operation, self discharge of battery will happen (especially in winter). If the tractor is stored for more than 1 month, the battery minus terminal should be disconnected.

When operating for the first time or after long term storage, check if the battery charge level is enough. (If measurement of battery voltage is available, check if the voltage is more than 12.5 V.) When the tractor is stored more than 2 months in summer or 3 months in winter, charge the battery.

NOTE: When handling the battery, never close or cover vent of battery.

FIG. 223: The battery is required the electrolyte inspection. Make sure that the electrolyte level is between upper limit, A, and lower limit, B. When the level is below lower limit, raise the level with distilled water

A B

FIG. 223 FIG. 224: To replace the battery, disconnect negative (-) cable, 1, first and then remove positive (+) cable, 2. Loosen and remove battery securing clamp and carefully When installing battery, cable, 2, connected to starter solenoid should be connected to positive (+) battery terminal first then cable, 1, grounded to tractor frame can be connected to negative (-) battery terminal.

1

NOTE: Make sure that replacement battery is same size and equal capacity. (TG6370/6400: 80D26R, TG6490/6620/6670: 115D31R) IMPORTANT:

Do not reverse battery cable connections as severe electrical system damage will result.

2

FIG. 224

118

LUBRICATION & PERIODIC MAINTENANCE Safety Switches This tractor is equipped with a neutral-start system consisting of neutral switches and a relay. To start tractor, ALL the following is required: PTO switch must be in OFF position Range shift lever must be in neutral position (HST type and dual clutch type only) Forward / Reverse Lever must be in neutral position (Standard type only)

WARNING: DO NOT bypass or modify the neutral switch. If the neutral start system does not operate properly, consult your dealer immediately.

NOTE: A seat safety switch is incorporated into system. The engine stops when operator leaves seat when either PTO is engaged and / or range shift lever is not in neutral.

Wiring / Fuse Arrangement CAUTION: Keep all wiring connections clean and tight. Make sure wiring is correctly secured to prevent damage.

CAUTION: DO NOT alter wiring by adding “home-made” extensions or replacements. Doing so can eliminate fuse protection and / or eliminate safety features of the system.

CAUTION: Tractor is equipped with negative (-) ground system. Tractor metal parts provide many electrical connections. For this reason, all positive (+) circuits must be insulated to prevent “grounding” or short circuits and prevent possible fire.

CAUTION: DO NOT replace any fuse with a fuse of higher amperage rating. DO NOT use wire (or foil) to by-pass fuse protection. Fire can result.

If fuses blow repeatedly, examine electrical system for “grounded” or “shorted” circuits.

119

TG6370, 6400, 6490, 6620, 6670 Fuse Location (Standard Type) Main Fuse Box, A- Located on right-hand side, to steering post.

TABLE 14: Function of main fuse box Ref. 1 2 3 4 5

Amp 15A 15A 10A 10A 15A

6

15A

7 8

20A

9

3A

10 11 12 13 14 15 16 17 18 19 20

15A 15A 15A 10A 10A 5A 15A 5A 25A 10A 5A

Function Hazard Warning Lamp Combination Switch Stop Lamp Instrument Panel Power Supply Cigar Socket Alternator, Controller Power Supply, Instrument Panel Cabin Power Supply Safety Circuit, Fuel Pump, Engine Stop Solenoid Indicator Lamp Headlamp (Low beam) Headlamp (High beam) Tail Lamp (Right-hand side) Tail Lamp (Left-hand side) Rear Registration Plate Lamp Spare (1) Horn Spare (2) Engine Stop Solenoid Check Mode Fuse

B

A E

C G

FIG. 225 C: Assistant Power 120W D: Cigar Socket E: Work Lights F: 7 Pins Socket G: Seat Switch

TABLE 15: Function of slow blow fuse Amp 60A 50A 40A

Function Alternator circuit Main circuit Cabin circuit

D

F

• Slow-Blow Fuses, B - In-line fuses protect relevant circuit by melting when sustained heavy electrical load or short circuit is encountered.

Fuse B is located on left side, to rear of engine. (above the starter)

Ref. B-1 B-2 B-3

E

F: 7 Pins Socket Location

(Yellow) (Red) (Green)

NOTE: Failure of fuse, B-1, is usually caused from incorrect polarity (such as reversed cables when using a booster battery). Failed fuse will not allow battery to be charged during normal operation.

TABLE 16: Function of 7 pins socket Ref.       

IMPORTANT: Fuses are of specific amperage capacity for the circuit in which they are located. Do not replace fuses with unauthorized parts.

120

DIN L 52 31 R 58R 54 58L

Function Left Turn Ground Right Turn Tail Light Stop Light Tail Light

LUBRICATION & PERIODIC MAINTENANCE Fuse Location (TG6400 / 6490 HST Type & Dual Clutch Type) Main Fuse Box, A- Located on right-hand side, to steering post.

TABLE 17: Function of main fuse box Ref. 1 2 3 4 5 6

Amp 15A 15A 10A 10A 15A 15A

7

15A

8

20A

9

3A

10 11 12 13 14 15 16 17 18 19 20

15A 15A 15A 10A 10A 5A 15A 5A 25A 10A 5A

Function Hazard Warning Lamp Combination Switch Stop Lamp Instrument Panel Power Supply Cigar Socket Alternator, Instrument Panel Controller Power Supply, Independent Solenoid, HST high-low Solenoid Cabin Power Supply Safety Circuit, Fuel Pump, Engine Stop Solenoid Indicator Lamp Headlamp (Low beam) Headlamp (High beam) Tail Lamp (Right-hand side) Tail Lamp (Left-hand side) Rear Registration Plate Lamp Spare (1) Horn Spare (2) Engine Stop Solenoid Check Mode Fuse

B

A

C D H F

E

G1

C: Assistant Power 120W D: Cigar Socket E: Work Lights F: 7 Pins Socket (Machine speed information) G1: 7 Pins Socket (ROPS type) G2: 7 Pins Socket (CABIN type) H: Seat Switch TABLE 19-1: Function of 7 pins socket (Machine speed information) Ref. Function  3 4 Machine speed  information 2 5    PE 6 1 12V  PE Earth

TABLE 18: Function of slow blow fuse Amp 60A 50A 40A

Function Alternator circuit Main circuit Cabin circuit

G2

FIG. 226

• Slow-Blow Fuses, B - In-line fuses protect relevant circuit by melting when sustained heavy electrical load or short circuit is encountered.

Fuse B is located on left side, to rear of engine. (above the starter)

Ref. B-1 B-2 B-3

E

(Yellow) (Red) (Green)

NOTE: Failure of fuse, B-1, is usually caused from incorrect polarity (such as reversed cables when using a booster battery). Failed fuse will not allow battery to be charged during normal operation.

TABLE 19-2: Function of 7 pins socket Ref.       

IMPORTANT: Fuses are of specific amperage capacity for the circuit in which they are located. Do not replace fuses with unauthorized parts.

121

DIN L 52 31 R 58R 54 58L

Function Left Turn Ground Right Turn Tail Light Stop Light Tail Light

TG6370, 6400, 6490, 6620, 6670 Fuse Location (TG6620 / 6670) Main Fuse Box, A- Located on right-hand side, to steering post.

TABLE 20: Function of main fuse box Ref. 1 2 3 4 5 6

Amp 15A 15A 10A 10A 15A 15A

7

15A

8

20A

9

3A

10 11 12 13 14 15 16 17 18 19 20

15A 15A 15A 10A 10A 5A 15A 5A 25A 10A 5A

Function Hazard Warning Lamp Combination Switch Stop Lamp Instrument Panel Power Supply Cigar Socket Alternator, Instrument Panel Controller Power Supply, Independent Solenoid, HST high-low Solenoid Cabin Power Supply Safety Circuit, Fuel Pump, Engine Stop Solenoid Indicator Lamp Headlamp (Low beam) Headlamp (High beam) Tail Lamp (Right-hand side) Tail Lamp (Left-hand side) Rear Registration Plate Lamp Spare (1) Horn Spare (2) Engine Stop Solenoid Check Mode Fuse

B C

D A

E F J H

G

I

FIG. 227 E: Assistant Power 120W F: Cigar Socket G: Work Lights H: 7 Pins Socket (Machine speed information) I: 7 Pins Socket (CABIN type) J: Seat Switch

Engine Fuse Box, B- Located in the inside of the dash cover.

TABLE 21: Function of engine fuse box Ref. 1 2 3 4 5 6

Amp 5A 5A 25A 15A 25A

Function Engine ECU Main Relay Coil Main Relay Fuel Pump, Starter Relay Coil Spare

TABLE 23-1: Function of 7 pins socket (Machine speed information) Ref. Function  3 4 Machine speed  information 2 5    PE 6 1 12V  PE Earth

• Slow-Blow Fuses, C & D - In-line fuses protect relevant circuit by melting when sustained heavy electrical load or short circuit is encountered.

Fuse C and D are located on left side, to rear of engine.(above the starter)

TABLE 23-2: Function of 7 pins socket

TABLE 22: Function of slow blow fuse Ref. B-1 B-2 B-3 B-4 C-1 C-2

Amp 60A 60A 50A 40A 40A 40A

Function Engine ECU Alternator circuit Main circuit Cabin circuit Glow Starter

G

Ref.       

(Yellow) (Yellow) (Red) (Green) (Green) (Green) 122

DIN L 52 31 R 58R 54 58L

Function Left Turn Ground Right Turn Tail Light Stop Light Tail Light

LUBRICATION & PERIODIC MAINTENANCE NOTE: Failure of fuse, B-2, is usually caused from incorrect polarity (such as reversed cables when using a booster battery). Failed fuse will not allow battery to be charged during normal operation.

IMPORTANT: Fuses are of specific amperage capacity for the circuit in which they are located. Do not replace fuses with unauthorized parts.

Fuse Location (Cabin Type) Cabin Fuse Box, P- Located on the left hand side of the operator’s seat

FIG. 228 TABLE 24: Function of cabin fuse box Ref. 1 2 3 4 5 6 7 8 9 10

Amp 15A 15A 5A 15A 25A 7.5A 15A 10A 10A

Function Front Working Lamp Rear Working Lamp Compressor Relay Switch Blower Motor Air Conditioner Switch Room Lamp, Radio Front Window Wiper Rear Window Wiper (option)

Radio Connection, Q (option) Rear Wiper Connection, R (option) Rear Working Lamp, S (option) 123

TG6370, 6400, 6490, 6620, 6670 CLUTCH FREE-PLAY ADJUSTMENT FIG. 229: Check clutch pedal free-play regularly and adjust as necessary. Correct clutch pedal free-play, A, is 25 to 35 mm (1 to 1 - 3 / 8”) when measured at the end of the pedal as shown.

NOTE: Through use, clutch free-play will be reduced.

Correct free-play must be maintained to; reduce wear on clutch and release bearing, and allow complete disengagement when pedal is depressed.

A

IMPORTANT:

FIG. 229

FIG. 230: To adjust clutch pedal free-play, loosen lock nut, 1 (right-hand thread), and lock nut, 2 (left-hand thread). Adjust turnbuckle, 3, on linkage until free-play is correct. Lengthening linkage will increase free-play, shortening linkage will reduce free-play.

２ ３

Secure by retightening lock nuts.

1

FIG. 230 BRAKE ADJUSTMENT FIG. 231: Unlatch pedals and check free-play of each brake pedal. Correct free-play, A, of each individual brake pedal is 30 to 35 mm (1 - 1 / 8 to 1 - 3 / 8”).

NOTE: Through use, free-play will increase and brake balance will be affected. Adjust and balance brakes before free-play is excessive.

A

FIG. 232: Loosen lock nut, 1 (right-hand thread), and lock nut, 2 (left-hand thread). Adjust turnbuckle, 3, so free-play is correct for respective brake pedal.

Repeat procedure for other brake so free-play in pedals is equal. Secure lock nuts against turnbuckles.

FIG. 231

When adjustment is complete, latch pedals together and operate tractor at low speed. Depress pedals. If tractor has tendency to “pull” to 1 side, slight readjustment of 1 brake is required.

2

2 3

3

Make sure lock nuts are secured when brake adjustment is complete. Check operation of parking brakes after adjustment is made.

1

１

CAUTION: Brakes must be adjusted evenly to permit equal braking action at both rear wheels when brake pedals are latched together.

FIG. 232 124

LUBRICATION & PERIODIC MAINTENANCE WHEELS & TIRES

TABLE 25: Tire inflation pressure Tractor

Check wheels and tires periodically for correct inflation pressures, tight wheel bolts, and any physical damage that may be a detriment to tractor operation and operator safety. Correct condition prior to tractor operation.

Type Tires Agri

TG6370 TG6400

Tire Inflation Pressures

Agri Turf

TABLE 21: Maintaining correct tire pressure will help insure tire long life. If tires have deep scratches, cuts or punctures, the respective tire should be repaired or replaced by qualified personnel as soon as possible.

Agri

IMPORTANT:

Agri

Turf

If necessary to replace any tire(s), ensure original tire size is used. This is particularly true on 4WD models to ensure correct amount of front axle overspeed (or “lead”) is maintained.

TG6490 TG6620 TG6670

NOTE: For TG6490 center ROPS type, turf tire is not available.

Turf Turf Turf Turf

NOTE: For TG6490 standard type, 10x16.5 + 17.5L24 and 280 / 70R16 + 420 / 70R24 turf tires are not available.

Tire Location / Size Front 7-16 Rear 12.4-24 Front 8-16 Rear 13.6-24 Front 212 / 80D-15 Rear 355 / 80D-20 Front 260 / 70R16 Rear 380 / 70R24 Front 8-16 Rear 13.6-24 Front 9.5-16 Rear 13.6-28 Front 212 / 80D-15 Rear 355 / 80D-20 Front 29x12.00-15 Rear 475 / 65D-20 Front 10x16.5 Rear 17.5L-24 Front 280 / 70R16 Rear 420 / 70R24

Pressure PSI (kPa) 41 (280) 23 (160) 23 (160) 14 (100) 23 (160) 14 (100) 35 (240) 23 (160) 23 (160) 14 (100) 31 (220) 23 (160) 23 (160) 14 (100) 20 (140) 12 (80) 45 (310) 26 (180) 35 (240) 23 (160)

Wheel Bolt Torque FIG. 233: Periodically check all wheel bolt torques.

Correct bolt torques: Front Wheel Bolts, 1 .....................75 ft.-lbs. (102 N•m) Rear Wheel Bolts, 2....................120 ft.-lbs. (163 N•m)

１

Rear Wheel Center to Rim Bolts, 3 (Ag. Tires Only) 120 ft.-lbs. (163 N•m)

2

CAUTION: Correct wheel bolt torque must be maintained. Installation of front or midmounted implements (ex; loaders, mowers) impose increased loads and require frequent checking of wheel bolts.

3 FIG. 233

Front Wheel Alignment FIG. 234: Correct “toe-in” dimensions of front wheels (A minus B) are as follows:

B

4WD.......................................... 2-6 mm (0.08 to 0.24”) To adjust, loosen lock nuts, 1, and adjust tie rod length by turning turnbuckle, 2. Adjust each side evenly.

Ball joints must move freely after lock nuts are tightened.

1

NOTE: Measure toe-in from tire center to tire center at a point halfway up on face of each tire.

2 A FIG. 234

125

TG6370, 6400, 6490, 6620, 6670 Front Wheel Spacing FIG. 235: Front 4WD Wheels - Ag tires, turf tires cannot be reversed.

A

TABLE 26: Front wheel setting Tractor

TG6370 TG6400

TG6490 TG6620 TG6670

Tire Location / Size 7-16 Agri 8-16 212 / 80D-15 Turf 260 / 70R16 8-16 Front Agri 9.5-16 212 / 80D-15 29x12.00-15 Turf 10x16.5 280 / 70R16 Type Tires

Setting (mm) 1,090 1,145 1,135 1,220 1,200 1,220 1,215 1,320 1,125 1,240

FIG. 235

NOTE: For TG6490 center ROPS type, turf tire is not available.

NOTE: For TG6490 standard type, 10x16.5 and 280 / 70R16 turf tires are not available.

Rear Wheel Spacing Agricultural-Type Rear Wheels - 3, 4 or 5 different rear tread width settings may be achieved by reversing wheel centers, switching rear tires and wheels from side to side, and / or by repositioning wheel rim on the wheel center.

NOTE: Agricultural lug-type tires must always be installed so when viewed from the rear, the “V” pattern of the tread points upward.

FIG. 236: To adjust rear tread width, jack tractor sufficiently and securely block in raised position.

To change rim offset - Remove rim, 2, from wheel center, 1. Rotate wheel center slightly (so rim brackets can move past outer edge of wheel center) and reposition rim on opposite side of wheel center.

Repeat procedure with remaining side.

2

To reverse entire wheel and tire assembly - Raise both rear tires of tractor. Remove bolts securing both rear wheel assemblies to rear axle hubs and switch wheel assemblies to opposite sides of tractor.

1 FIG. 236

CAUTION: Rear wheels are heavy. Pay attention when moving. Make sure tractor is blocked securely.

126

LUBRICATION & PERIODIC MAINTENANCE FIGS. 237, 238 & 239: Tighten all wheel bolts securely and recheck after short period of operation.

TABLE 27: Agricultural rear tire settings Tractor Ref. Type Tires

TG6370 TG6400

TG6490 (Center ROPS Type)

TG6490 (Rear ROPS & Cabin Type) TG6620 TG6670

1 2 3 4 1 2 3 4 1 2 3 2 3 4 5 2 3 4

Agri

Agri

Rear

Agri

Agri

Agri

Tire Setting Location / Size (mm) 1,105 1,175 12.4-24 6PR 13.6-24 4PR 1,215 1,300 1,115 1,200 13.6-24 4PR 1,245 1,315 1,140 13.6-28 6PR 1,220 1,340 1,200 1,245 13.6-24 4PR 1,315 1,355 1,220 13.6-28 6PR 1,240 1,340

TG6370 / 6400

FIG. 237 TG6490 / 6620 / 6670

5

TG6370 TG6400

TG6490 TG6620 TG6670

3

2

FIG. 238

TABLE 28: Turf rear tire settings Tractor

4

Tire Setting Ref. Type Tires Location / (mm) Size 1 1,085 355 / 80D-20 2 1,195 1 1,110 380 / 70R24 2 1,175 2 355 / 80D-20 1,190 Rear Turf 2 475 / 65D-20 1,340 1 1,195 17.5L-24 2 1,370 1 1,230 420 / 70R24 2 1,335 FIG. 239

NOTE: For TG6490 center ROPS type, turf tire is not available.

NOTE: For TG6490 standard type, 17.5L-24 and 420 / 70R24 turf tires are not available.

127

1

TG6370, 6400, 6490, 6620, 6670 Steering Free-Play 30 (1. mm 25 ”)

FIG. 240: Steering should be checked for excessive looseness, as indicated by steering wheel free-play.

Maximum free-play is approximately 30 mm (1.25”) when measured at outside of steering wheel rim.

F

H

E

C

Excessive free-play can be caused by: • Loose or worn ball joints • Worn or damaged steering column shaft / universal joints • Worn or damaged power steering unit

FIG. 240

CAUTION: Excessive steering free-play must be corrected before use. Contact your dealer.

3

Front Axle End-Float (4WD) FIG. 241: Fore and aft play of front drive axle, 1, in its supports should be 0.1-0.3 mm (0.004-0.012”). Endfloat is measured with axle raised off ground.

Loosen lock nut, 2, and turn adjusting bolt, 3, as needed to achieve correct measurement. Tighten lock nut.

2 １ FIG. 241

NOTE: Excessive end-float will cause noise. This noise will be more pronounced when using 4WD. CLUTCH HOUSING PLUG FIG. 242: Pipe plug, 1, should be removed from bottom of clutch housing once a year or when clutch slipping is apparent. Any oil leakage from engine rear crankshaft seal and / or transmission input will be indicated by oil draining through hole. Contact your dealer if oil leakage is evident.

１

FIG. 242 TABLE 29: Torque chart

TORQUE CHART

4T

TABLE 29: All fasteners should be tightened in accordance with torque chart unless a specific torque value is called out in relevant maintenance information.

ft.lbs.

3.6-5.5 8.7-12.7 15.9-22.4 30.4-43.4 40.5-57.8 60.7-86.7

M6 M8 M10 M12 M14 M16 M18 M20 97.6-137.3

128

7T ft.lbs.

N.m 7.2-8.7 9.8-11.8 17.3-22.4 23.5-30.4 33.3-42.7 45.1-57.9 58.6-68.7 79.4-93.1 90.3-108.4 122.5-147.0 144.6-169.9 196.0-230.3 144.7-173.6 196.0-234.6 132.3-186.2 245.7-330.3 333.2-447.9 N.m 4.9-7.4 11.8-17.2 21.6-30.4 41.2-58.8 54.9-78.4 82.3-117.6

LUBRICATION & PERIODIC MAINTENANCE STORAGE FIG. 243: If tractor is to be stored for extended periods, such as off-season non-use, certain measures should be taken for its preservation during such periods. These measures will vary according to geographical area and storage season.

1.

Replace engine oil and filter. Operate at low idle 5 minutes to lubricate parts.

2.

Lubricate all grease fittings and lightly oil control linkage pivots.

3.

Detach implements.

4.

Store tractor in enclosed area, if possible, for protection from weather.

5.

Block up tractor to remove weight from tires and to protect tires from oily or damp floor.

6.

Raise and lock 3-point lift linkage in up position by turning lowering rate control knob, 1, fully clockwise.

Standard & Dual Clutch Types

HST Type

1

1

FIG. 243

FIG. 244: Step 7 - Fill fuel tank to prevent condensation from forming on inside of tank. Turn filter valve, 2, to OFF position.

8.

Remove battery and store in cool dry place. Maintain charge during storage period.

9.

If tractor is stored during cold weather season insure that antifreeze is adequate. Alternatively, radiator and engine block may be drained.

10. Check with your diesel fuel supplier on the availability of a diesel fuel additive to place in the fuel system during storage period.

11. If tractor cannot be placed in an enclosed area place it under some sort of cover and cover exhaust pipe to prevent entrance of rain or snow.

FIG. 244

FIG. 245: Step 12 - Depress clutch pedal (if equipped) and secure in the disengaged position with hook, 3.

NOTE: This is to prevent clutch seizure during long periods of tractor storage.

13. Touch up scratches with paint.

At the end of storage period; Perform appropriate lubrication and maintenance before placing tractor back in service. See Lubrication and Maintenance section.

3

• Conduct full pre-start inspection. Make sure all controls operate correctly.

FIG. 245 • Allow engine to idle approximately 30 minutes.

Check for leaks and repair as required.

129

TG6370, 6400, 6490, 6620, 6670 WASHING OF THE MACHINE CAUTION: If you use high pressure washer, be sure to use in accordance with this operator’s manual and safety label of washer. In case of irregular use, it may cause personal injury and damage to the machine.

CAUTION: Set the nozzle of hose ‘spread’ and keep the distance more than 60 cm in order to avoid damage to the machine. Especially, be care for not to hit the water to electrical parts and label.

FIG. 246: Unsuitable washing may cause the following accidents; 1. Fire as a result of short circuit or the damage to the electrical parts.

2. Oil leakage as a result of the damage to the hydraulic hose.

3. Damage to the machine.

(1) Label is came off.

(2) Accident occurs by the damaged electrical parts, engine, radiator, and interior.

(3) Rubber parts (tire, seal) and resin parts are damaged.

(4) Paint is came off.

Keep the distance more than 60 cm

Hose

Set the nozzle of hose ‘spread’

FIG. 246

130

LUBRICATION & PERIODIC MAINTENANCE MAJOR CONSUMABLES LIST ROPS Type Rear ROPS Type

Center ROPS Type

13

11 4

3

2

1

8 14

12

12 10

9 5

6

7

FIG. 247 1

AIR CLEANER FILTER COMP

8

BLADE FUSE 32V05A 32V10A 32V15A 32V20A 32V25A

2 3

FUEL FILTER ASSY FUEL FILTER ELEMENT

9

SLOW BLOW FUSE 40A 50A 60A

4

OIL FILTER CARTRIDGE

10

HEAD LAMP BULB / 12V / 45 / 40W

11

NUMBER PLATE LAMP BULB / 12V / 5W

12

FRONT COMBINATION LAMP BULB / 12V21W BULB / 12V5W

13

REAR COMBINATION LAMP BULB / 12V21W BULB / 12V21/5W

14

HAZARD SWITCH LAMP BULB / LAMP / 14V60MA

5 6

7

CARTRIDGE (20) CARTRIDGE

SUCTION FILTER (400) COMP

131

TG6370, 6400, 6490, 6620, 6670 REF

PARTS NAME

MODEL

PARTS CODE

TG6370 / 6400

1801-104-203-00

TG6490

1803-104-203-00

1

AIR CLEANER FILTER COMP

2

FUEL FILTER ASSY

ALL

1650-111-220-10

3

FUEL FILTER ELEMENT

ALL

1513-102-329-00

4

OIL FILTER CARTRIDGE

ALL

6213-240-005-10

5

CARTRIDGE (20)

Standard Type

1785-509-201-00

6

CARTRIDGE

HST Type

3874-354-211-00

7

SUCTION FILTER (400) COMP

Standard Type

1801-508-250-00

8

BLADE FUSE

HST & Dual Clutch Type

1801-508-260-00

32V03A

ALL

3827-270-003-00

32V05A

ALL

3824-247-202-00

32V10A

ALL

3821-262-202-00

32V15A

ALL

3821-262-203-00

32V20A

ALL

3821-262-204-00

32V25A

ALL

3824-247-203-00

40A

ALL

1650-650-222-00

50A

ALL

1729-652-232-00

60A

9

SLOW BLOW FUSE

ALL

3829-260-303-00

10

HEAD LAMP BULB / 12V / 45 / 40W

ALL

1792-650-211-00

11

NUMBER PLATE LAMP BULB / 12V / 5W

ALL

1674-654-271-00

Rear ROPS Type

1564-654-213-00

12

FRONT COMBINATION LAMP

Center ROPS Type

1674-654-211-00

Rear ROPS Type

1566-656-204-00

Center ROPS Type

1674-654-212-00

BULB / 12V21W

Rear ROPS Type

1564-654-213-00

BULB / 12V21/5W

Rear ROPS Type

1566-656-211-00

ALL

1740-680-551-00

13

14

REAR COMBINATION LAMP

BULB / 12V21W BULB / 12V5W

HAZARD SWITCH LAMP BULB / LAMP / 14V60MA

132

LUBRICATION & PERIODIC MAINTENANCE CABIN Type

12

11

13 4

3

15

2 14

8 1

16 9 10 5

6

7

FIG. 248 1

AIR CLEANER FILTER COMP

8

BLADE FUSE 32V05A 32V7.5A 32V10A 32V15A 32V20A 32V25A

2 3

FUEL FILTER ASSY FUEL FILTER ELEMENT

9

SLOW BLOW FUSE 40A 50A 60A

4

OIL FILTER CARTRIDGE

10

HEAD LAMP BULB / 12V / 45 / 40W NUMBER PLATE LAMP BULB / 12V / 5W WORKING LAMP BULB / HALOGEN / 12V35W FRONT COMBINATION LAMP BULB / 12V21W BULB / 12V5W REAR COMBINATION LAMP BULB / 12V21W BULB / 12V21/5W ROOM LAMP BULB / LAMP /12V8W

11 12 13 5 6

CARTRIDGE (20) CARTRIDGE 14

15 7

SUCTION FILTER (400) COMP

16

133

HAZARD SWITCH LAMP BULB / LAMP / 14V60MA

TG6370, 6400, 6490, 6620, 6670 REF 1 2

PARTS NAME AIR CLEANER FILTER COMP FUEL FILTER ASSY

3

FUEL FILTER ELEMENT

4

OIL FILTER CARTRIDGE

5

CARTRIDGE (20)

6

CARTRIDGE

7

SUCTION FILTER (400) COMP

8

BLADE FUSE

MODEL

PARTS CODE

TG6370 / 6400

1801-104-203-00

TG6490 / 6620 / 6670

1803-104-203-00

TG6370 / 6400 / 6490

1650-111-220-10

TG6620 / 6670

T. D. A

TG6370 / 6400 / 6490

1513-102-329-00

TG6620 / 6670

T. D. A (Main ilter) T. D. A (Pre-Filter)

TG6370 / 6400 / 6490

6213-240-005-10

TG6620 / 6670

T. D. A

Standard Type

1785-509-201-00

HST Type

3874-354-211-00

Standard Type

1801-508-250-00

HST & Dual Clutch Type

1801-508-260-00

32V03A

ALL

3827-270-003-00

32V05A

ALL

3824-247-202-00

32V7.5A

ALL

1729-658-202-00

32V10A

ALL

3821-262-202-00

32V15A

ALL

3821-262-203-00

32V20A

ALL

3821-262-204-00

32V25A

ALL

3824-247-203-00

40A

ALL

1650-650-222-00

50A

ALL

1729-652-232-00

60A

9

SLOW BLOW FUSE

ALL

3829-260-303-00

10

HEAD LAMP BULB / 12V / 45 / 40W

ALL

1792-650-211-00

11

NUMBER PLATE LAMP BULB / 12V / 5W

ALL

1674-654-271-00

12

WORKING LAMP BULB / HALOGEN / 12V35W

ALL

1792-658-361-00

13

FRONT COMBINATION LAMP

BULB / 12V21W

ALL

1564-654-213-00

BULB / 12V5W

ALL

1566-656-204-00

14

REAR COMBINATION LAMP

BULB / 12V21W

ALL

1564-654-213-00

BULB / 12V21/5W

ALL

1566-656-211-00

15

ROOM LAMP BULB / LAMP /12V8W

ALL

1792-658-301-00

16

HAZARD SWITCH LAMP BULB / LAMP / 14V60MA

ALL

1740-680-551-00

134

TROUBLESHOOTING

TROUBLESHOOTING ENGINE Problem Starter motor does not operate with key turned to START

Starter motor operates but not at full speed

Starter motor operates but engine does not start

Irregular engine running

When decelerated, engine stops

Engine over-speeds

Engine stops unexpectedly during operation

Engine overheats

Exhaust fumes are while

Exhaust fumes are too black

Possible Cause Gear shift lever not in neutral PTO clutch engaged Broken safety switch Discharged battery Loose or dirty terminals Broken main switch Broken starter Discharged battery Loose or dirty terminals Defective oil viscosity Improper oil viscosity Defective engine Electric fuel system Air in fuel system Clogged fuel filter Fuel is not being supplied Incorrect preheating procedure Defective engine Air in fuel system Clogged fuel filter Clogged fuel injectors Fuel leakage from fuel line Fuel injection pump timing Defective engine Incorrect low idle setting Malfunctioning fuel injection pump Improper valve clearance Defective fuel injectors Defective governor Incorrect high speed setting Engine oil is getting into combustion chambers Insufficient fuel supply Defective fuel injectors Defective fuel injection pump Engine seizure due to low or poor oil Insufficient coolant Broken or loose fan belt Clogged grille, radiator screens Clogged radiator fins Defective thermostat Insufficient engine oil Clogged air cleaner High engine oil level Insufficient fuel delivery Cold-running engine Poor fuel Excessive fuel delivery Insufficient fuel injector pressure Insufficient combustion air 135

Remedy Place gear shift lever in neutral.

Turn off PTO switch.

Consult your dealer.

Charge battery.

Clean and retighten securely.

Consult your dealer.

Consult your dealer.

Charge battery.

Clean and retighten securely.

Clean and tighten starter mounting.

Replace with oil of proper viscosity.

Consult your dealer.

Consult your dealer.

Air-bleed fuel system.

Clean filter.

Check fuel level, open fuel valve.

Longer use of glow plugs.

Consult your dealer Air-bleed fuel system.

Clean filter.

Consult your dealer.

Retighten clamps, replace defective pipes.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Top up fuel and-bleed fuel system.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Top up coolant.

Adjust belt tension or replace.

Clean.

Clean.

Replace.

Inspect oil level and replenish if necessary.

Clean or replace element (s).

Inspect oil level and correct.

Consult your dealer.

Allow to warm, check thermostat.

Replace with better grade.

Consult you dealer.

Consult you dealer.

Check, clean or replace air cleaner element.

TG6370, 6400, 6490, 6620, 6670 Problem Poor engine output

Oil pressure monitor is lit during operation

Charging monitor is lit during operation

Possible Cause Seized fuel injectors and / or carbon deposit Insufficient compression or leaking valves Incorrect valve clearances Incorrect fuel injection timing Insufficient fuel supply Clogged air cleaner Insufficient engine oil Too low oil viscosity Defective pressure switch Clogged oil filter Defective oil pump Defective wiring Defective alternator Defective regulator Low electrolyte level or defective battery Loose or damaged fan belt

Remedy Consult your dealer.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Check fuel system.

Clean or replace elements (s).

Replenish.

Replace with oil of proper viscosity.

Replace.

Replace element cartridge.

Consult your dealer.

Correct loose or dirty terminals, short circuit, poor connection etc.

Consult your dealer.

Consult your dealer.

Replenish distilled water or replace battery.

Adjust belt tension or replace.

CLUTCH Problem Clutch slips

Clutch will not disengage

Possible Cause Poor clutch pedal adjustment Worn or burnt clutch lining Engine, transmission oil leak Poor pedal adjustment Seized clutch lining Clutch shafts seized

Remedy Adjust free-play.

Consult your dealer.

Consult your dealer.

Adjust free-play.

Consult your dealer.

Consult your dealer.

Possible Cause Too much free play of pedals Worn or seized linings Different pedal strokes Broken return springs Poor lubrication

Remedy Adjust free-play.

Consult your dealer.

Correct so both pedals are equal.

Replace broken springs.

Remove rust, then lubricate.

Possible Cause Poorly installed steering column Air in steering hydraulic system Clogged suction filter Improper toe-in Different front tire inflation Loose steering or ball joints Defective steering unit, pump Worn steering column Loose ball joints Defective steering unit

Remedy Correct Air-bleed steering system.

Remove and clean.

Correct.

Inflate both tires to same pressure.

Retighten or replace defective parts.

Consult your dealer.

Consult your dealer.

Retighten.

Consult your dealer.

BRAKES Problem Brakes do not work well or not balanced with each other when applied Brake pedals do not return smoothly STEERING SYSTEM Problem Steering wheel is hard to turn or turns in 1 direction

Steering wheel has too much free-play

136

TROUBLESHOOTING HYDRAULIC SYSTEM Problem Insufficient oil pressure

Leaking piping With control lever in RAISE position, relief valve blows 3-point hitch does not lower

Possible Cause Low engine speed Low transmission oil Intake piping is sucking air Clogged oil filter (s) Defective hydraulic oil pump Defective control valve Broken cylinder Loose joints Cracked pipes Poorly adjusted rod on position control lever Locked lowering speed control knob Defective control valve Broken cylinder Seized lift shaft bearing

Remedy Increase speed.

Fill to specified level.

Retighten clamps or replace cracked pipes and defective O-rings.

Clean or replace.

Consult your dealer.

Consult your dealer.

Consult your dealer.

Retighten.

Replace pipes, O-rings.

Correct rod adjustment.

Turn counterclockwise to LOWERING position.

Consult your dealer.

Consult your dealer.

Consult your dealer.

ELECTRICAL SYSTEM Problem Battery cannot be charged

Possible Cause Blown fuse Defective wiring Loose or damaged fan belt Defective battery

Head lamps are dim

Particular function will not operate

Defective alternator Defective regulator Discharged battery Poor connections Burnt bulb (as applicable) Blown fuse Poor contact Defective switch

137

Remedy Check fuse and replace.

Correct loose, dirty terminals, short circuit, poor ground, etc.

Give belt proper tension or replace.

Correct loose terminal connection, corrosion, or electrolyte level.

Consult your dealer.

Consult your dealer.

Charge battery, check charging system Check ground points and terminals. Clean and tighten.

Replace.

Check fuse and replace.

Inspect ground points and terminals, clean if necessary.

Replace as required.

TG6370, 6400, 6490, 6620, 6670 HST SYSTEM (HST TYPE ONLY) Problem Despite depressing HST pedal,

Possible Cause Disconnected HST pedal sensor coupler

Connect

Remedy

tractor does not move

Disconnected arm of HST pedal sensor

Check and assemble

Broken HST pedal sensor Forward / Reverse lever in neutral

Consult your dealer Shift lever forward / rearward

Range shift lever in neutral

Shift lever except in neutral

Disconnected coupler of controller

Check controller and connect couplers

Despite HST releasing HST

Broken gear pump HST pedal not in neutral

Consult your dealer Check HST pedal linkage

pedal, tractor keeps moving

Broken HST pedal sensor

Consult your dealer Consult your dealer

Cruise control does not work

Broken HST Cruise control lamp is lit; Low engine revolution speed Cruise control lamp is NOT lit;

Increase engine revolution speed

Disconnected coupler of cruise control switch

Connect

Maximum speed control dial;

Left-hand & right-hand Brake switches ‘on’ Disconnected coupler or short circuit

Adjust brake switches Check coupler or replace

Max. speed does not change Response control dial;

Broken Max. speed control dial Slow response;

Consult your dealer

Response does not change

Disconnected coupler, broken harness

Check coupler or replace

Too quick response; Broken dial switch

Consult your dealer

FAULT CODE LIST

No.

Suspect Failure Mode Parameter Indicator Number (SPN) (FMI)

Fault Description

Note

1

3-251

01

The value of HST pedal sensor is less than regulated value.

Consult your dealer.

2

3-251

02

The value of HST pedal sensor is more than regulated value.

Consult your dealer.

The regulated value of HST pedal sensor is abnormality.

Consult your dealer.

3

3-251

03

HST pedal sensor is unadjusted.

Consult your dealer.

4

3-252

01

HST oil temperature is less than regulated value.

Consult your dealer.

5

3-252

02

HST oil temperature is more than regulated value.

Consult your dealer.

6

3-253

03

Initial adjustment of HST is set.

Consult your dealer.

138

SPECIFICATIONS

SPECIFICATIONS ENGINE TG6370 TG6400 TG6490 Make .................................................................Iseki Diesel ........................Iseki Diesel ........................ Iseki Diesel Model .................................................................... E3CG ................................ E3CD ................................ E4CG Type of Injection ............................................ Direct Injection .................. Direct Injection .................. Direct Injection Overhead Valve ................ Overhead Valve ................ Overhead Valve Aspiration............................................................. Natural .........................Turbo charger ......................... Natural Displacement .....................................................1,647 cm3 .......................... 1,498 cm3 .......................... 2,197 cm3 Number of Cylinders .................................................3 ........................................ 3 ........................................ 4 Bore ..................................................................... 87 mm ...............................87 mm ...............................87 mm Stroke .................................................................92.4 mm .............................84 mm ............................. 92.4 mm Engine Horsepower (Net) ....................... 26.6 kw @ 2,600 min-1 ..... 28.7 kw @ 2,600 min-1......35.1 kw @ 2,600 min-1 PTO Horsepower (Estimate) .................. 19.1 kw @ 540 PTO min-1.......19.7 kw @ 540 PTO min-1......23.6 kw @ 540 PTO min-1 Firing Order ...........................................................1-3-2 ..................................1-3-2 ................................ 1-3-4-2 Compression Ratio ................................................ 21.8 ....................................22.7....................................21.8 Low Idle Speed .............................................980-1,020 min-1 .............. 1,050-1,090 min-1 .............1,010-1,050 min-1 High Idle Speed .......................................... 2,810-2,910 min-1............. 2,810-2,910 min-1 .............2,810-2,910 min-1 Valve Clearance (Cold);Intake ............................0.35 mm ............................ 0.35 mm ............................ 0.35 mm Air Cleaner.................................................. Single dry element ............ Single dry element ............ Single dry element Engine Cooling ...................................... Liquid, forced circulation ....Liquid, forced circulation....Liquid, forced circulation Cold Starting Aid ............................................ Glow plugs (3)................... Glow plugs (3) ...................Glow plugs (4) TG6620 TG6670 Make ....................................... IHI Shibaura Machinery Corporation ............. IHI Shibaura Machinery Corporation Model ....................................................... N4LDI-TA4502 ............................................... N4LDI-TA4501 Type of Injection .................................4 cycle, water-cooled, ....................................4 cycle, water-cooled, ........................................................in line overhead valve type.............................in line overhead valve type Aspiration.................................................. Turbo charger .................................................Turbo charger Displacement ............................................... 2,216 cm3 ....................................................... 2,216 cm3 Number of Cylinders ...........................................4. .................................................................... 4 Bore ................................................................84 mm ............................................................84 mm Stroke ............................................................100 mm ..........................................................100 mm Engine Horsepower (Net) ..................44.7 kw @ 2,600 min-1 ................................. 48.5 kw @ 2,600 min-1 PTO Horsepower (Estimate) .......... 30.1 kw @ 540 PTO min-1 .............................32.6 kw @ 540 PTO min-1 Firing Order ................................................... 1-3-4-2 ........................................................... 1-3-4-2 Compression Ratio ...........................................18.0 ................................................................18.0 Low Idle Speed ....................................... 975-1,020 min-1 ............................................. 975-1,020 min-1 High Idle Speed .....................................2,705-2,755 min-1 ......................................... 2,705-2,755 min-1 Valve Clearance (Cold);Intake ...................... 0.20 mm ......................................................... 0.20 mm Air Cleaner............................................ Single dry element ......................................... Single dry element Engine Cooling .................................Liquid, forced circulation ................................Liquid, forced circulation Cold Starting Aid .......................................Glow plugs (3) ............................................... Glow plugs (3) CABIN TG6370/6400/6490/6620/6670 Category according to EN 15695-1: 2009.. ......................................... Category 1 Air conditioning unit of this tractor contains fluorinated greenhouse gas Type of F-gas................................................................................ HFC-134a Quantity per unit .............................................................................0,95 kg CO2 equivalent quantity per unit .................................................... 1,3585 t GWP ................................................................................................. 1 430

139

TG6370, 6400, 6490, 6620, 6670 TRANSMISSION TG6370 (Standard Type) TG6490 (Standard Type) Type: Primary ................................4-speed synchronized mesh ......................... 4-speed synchronized mesh Gear control............................................ manual ........................................................... manual Range .......................................... 3-speed sliding mesh ..................................... 3-speed sliding mesh Mechanical Shuttle ......... Synchronized, 95% reverse reduction ........... Synchronized, 95% reverse reduction Gear Speeds ................................ 12 gears forward, 12 reverse ......................... 12 gears forward, 12 reverse Clutch .......................................single stage dry with 240 mm disc. ............... single stage dry with 275 mm disc.

TG6400 (HST Type) TG6490/6620/6670 (HST Type) Type: Primary ............................................... Stepless ......................................................... Stepless Range .......................................... 3-speed sliding mesh ...................3-speed sliding mesh with high/low selection Gear Speeds .................................. 3 gears forward, 3 reverse ............................. 6 gears forward, 6 reverse Clutch ............................................................. None. ..............................................................None TG6370/6490 (Dual Clutch Type) Type: Primary ................................8-speed synchronized mesh Gear control............................................ manual Range .......................................... 3-speed sliding mesh Mechanical Shuttle ......... Synchronized, 95% reverse reduction Gear Speeds ................................ 24 gears forward, 24 reverse Clutch ......................................... Electro-hydraulic wet multi disc POWER TAKE OFF (PTO) TG6370 / 6400 (Standard / HST Type) TG6490 (Standard / HST Type) Type ............................................... Independent, engine driven ........................... Independent, engine driven Control ..............................................Electro-hydraulic control.................................Electro-hydraulic control Clutch ................................ Hydraulically engaged, multi-plate wet disc ... Hydraulically engaged, multi-plate wet disc Rear PTO Shaft ............................... 35 mm diameter, 6-spline ...............................35 mm diameter, 6-spline Output......................... Clockwise rotation when facing the end of shaft ... Clockwise rotation when facing the end of shaft Engine Speed @ 540 PTO min-1 ........2,430 min-1 ....................................................2,430 min-1 @ 750 PTO min-1 ........2,500 min-1 ....................................................2,500 min-1 Mid-PTO Shaft ............................ 25.4 mm diameter, 15-spline .......................... 35.0 mm diameter, 6-spline Output........................ Anti-clockwise rotation when facing the end of shaft . Anti-clockwise rotation when facing the end of shaft Mid-PTO Speed @ engine revolution speed.. 1,916 @ 2,600 min-1 ..................................... 1,916 @ 2,600 min-1 TG6370 (Dual Clutch Type) TG6490 (Dual Clutch Type) Type ............................................... Independent, engine driven ........................... Independent, engine driven Control ..............................................Electro-hydraulic control.................................Electro-hydraulic control Clutch ................................ Hydraulically engaged, multi-plate wet disc ... Hydraulically engaged, multi-plate wet disc Rear PTO Shaft ............................... 35 mm diameter, 6-spline ...............................35 mm diameter, 6-spline Output......................... Clockwise rotation when facing the end of shaft ... Clockwise rotation when facing the end of shaft Engine Speed @ 540 PTO min-1 ........2,480 min-1 ....................................................2,287 min-1 @ 750 PTO min-1 ........2,453 min-1 ....................................................2,453 min-1 @ 1,000 PTO min-1 .....2,457 min-1 ....................................................2,475 min-1 Mid-PTO Shaft ............................ 25.4 mm diameter, 15-spline .......................... 35.0 mm diameter, 6-spline Output........................ Anti-clockwise rotation when facing the end of shaft . Anti-clockwise rotation when facing the end of shaft Mid-PTO Speed @ engine revolution speed.. 1,072 @ 2,600 min-1 ..................................... 1,163 @ 2,600 min-1 Mid-PTO Speed @ engine revolution speed.. 1,507 @ 2,600 min-1 ..................................... 1,595 @ 2,600 min-1 Mid-PTO Speed @ engine revolution speed.. 1,921 @ 2,600 min-1 ..................................... 2,004 @ 2,600 min-1 TG6620/6670 Type ............................................... Independent, engine driven Control ..............................................Electro-hydraulic control Rear PTO Shaft ............................... 35 mm diameter, 6-spline Output......................... Clockwise rotation when facing the end of shaft Engine Speed @ 540 PTO min-1 ........2,430 min-1 @ 750 PTO min-1 ........2,475 min-1 Mid-PTO Shaft ............................. 35.0 mm diameter, 6-spline Output...................... Anti-clockwise rotation when facing the end of shaft Mid-PTO Speed @ engine revolution speed.. 1,916 @ 2,600 min-1 140

SPECIFICATIONS HYDRAULIC SYSTEM TG6370 (Standard Type) TG6490 (Standard Type) Steering System Type..................................................... Hydrostatic ..................................................... Hydrostatic Pump .................................Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................25.3 liter / min.................................................25.3 liter / min Pressure .............................. Relief valve setting 10,800 kPa ..................... Relief valve setting 11,800 kPa Main Hydraulic System; Pump .Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................45.3 liter / min.................................................45.3 liter / min Pressure .............................. Relief valve setting 15,695 kPa ..................... Relief valve setting 15,695 kPa Rear Linkage Type.................................................... 3-point hitch ................................................... 3-point hitch Size ......................................................Category I.......................................................Category I Control .......................... Operated by single position control lever .......Operated by single position control lever Lift Capacity measured at ball ends ..... 1,270 kg ........................................................ 1,580 kg measured at 24 inches .... 1,150 kg ........................................................ 1,400 kg TG6400 (HST Type) TG6490/6620/6670 (HST Type) Steering System Type..................................................... Hydrostatic ..................................................... Hydrostatic Pump .................................Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................19.5 liter / min.................................................25.3 liter / min Pressure .............................. Relief valve setting 10,800 kPa ..................... Relief valve setting 11,800 kPa Main Hydraulic System; Pump .Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................32.5 liter / min.................................................45.3 liter / min Pressure .............................. Relief valve setting 15,695 kPa ..................... Relief valve setting 15,695 kPa Rear Linkage Type.................................................... 3-point hitch ................................................... 3-point hitch Size ......................................................Category I.......................................................Category I Control .......................... Operated by single position control lever .......Operated by single position control lever Lift Capacity measured at ball ends ..... 1,270 kg ........................................................ 1,580 kg measured at 24 inches .... 1,150 kg ........................................................ 1,400 kg TG6370 (Dual Clutch Type) TG6490 (Dual Clutch Type) Steering System Type..................................................... Hydrostatic ..................................................... Hydrostatic Pump .................................Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................16.1 liter / min.................................................16.2 liter / min Pressure .............................. Relief valve setting 10,800 kPa ..................... Relief valve setting 11,800 kPa Main Hydraulic System; Pump .Transmission-mounted gear pump.................Transmission-mounted gear pump Maximum Output ...............................27.8 liter / min.................................................37.8 liter / min Pressure .............................. Relief valve setting 15,695 kPa ..................... Relief valve setting 15,695 kPa Rear Linkage Type.................................................... 3-point hitch ................................................... 3-point hitch Size ......................................................Category I.......................................................Category I Control .......................... Operated by single position control lever .......Operated by single position control lever Lift Capacity measured at ball ends ..... 1,270 kg ........................................................ 1,580 kg measured at 24 inches .... 1,150 kg ........................................................ 1,400 kg

ELECTRICAL SYSTEM TG6370/6400 TG6490 TG6620/6670 System Voltage..............12 volt, negative (-) ground.........12 volt, negative (-) ground..........12 volt, negative (-) ground Battery cca @ -18 degrees C (0 degrees F).... ..582 cca (EN) <80D26R>..................600 cca (EN) <115D31R>..................600 cca (EN) <115D31R> Charging ROPS Type...............60 amp alternator with internal.................60 amp alternator with internal regulator / rectifier....................................regulator / rectifier.

CABIN Type..............60 amp alternator with internal................60 amp alternator with internal...................75 amp alternator with internal regulator / rectifier................................ ....regulator / rectifier......................................regulator / rectifier 141

TG6370, 6400, 6490, 6620, 6670 CAPACITIES TG6370 TG6400 TG6490 TG6620/6670 Engine Crankcase with Filter ...................5.4 liters ................ 4.7 liters .................7.9 liters ................ 5.8 liters Transmission (Standard/ HST Type) ......31.0 liters .............. 31.0 liters ...............38.0 liters .............. 38.0 liters Transmission (Dual Clutch Type) ...........38.0 liters ..................None ...................40.0 liters ..................None Fuel Tank ................................................40.0 liters .............. 40.0 liters ...............53.0 liters .............. 53.0 liters Cooling system ........................................6.7 liters ................ 6.7 liters .................7.6 liters ................ 7.6 liters Front Drive Axle .......................................7.5 liters ................ 7.5 liters .................8.0 liters ................ 8.0 liters

TREAD WIDTH SETTING TG6370 / 6400

TG6490 (Cabin Type & Rear ROPS Type) & TG6620/6670 Tire type location size Setting (mm) Tire type location size Setting (mm) Front tires ..................................... Agri 7-16.....................................1,090 .............. Agri 8-16 ...................................1,200 Agri 8-16.....................................1,145 .............Agri 9.5-16 ..................................1,220 Turf 212 / 80D-15 ..............................1,135 ....... Turf 212 / 80D-15 ............................1,215 Turf 260 / 70R16 ..............................1,220 ........Turf 29x12.00-15 .............................1,320 ........... Turf 10x16.5 .................................1,125 ........ Turf 280 / 70R16 .............................1,240

Tire type location size Ret. Setting (mm) Tire type location size Ref. Setting (mm) Rear tires ................................... Agri 12.4-24 .............. 1 .................1,105 ............Agri 13.6-24 .............. 1 ................1,200 ........................ 2 .................1,175 .............................................. 2 ................1,245 ........................ 3 .................1,215 .............................................. 3 ................1,315 ........................ 4 .................1,300 .............................................. 4 ................1,355 Agri 13.6-24 .............. 1 .................1,105 ............Agri 13.6-28 .............. 1 ................1,220 ........................ 2 .................1,175 .............................................. 2 ................1,240 ........................ 3 .................1,215 .............................................. 3 ................1,340 ........................ 4 .................1,300 Turf 355 / 80D-20 .......... 1 .................1,085 ....... Turf 355 / 80D-20 .............................1,190 ........................ 2 .................1,195 Turf 380 / 70R24 .......... 1 ................. 1,110 ....... Turf 475 / 65D-20 .............................1,340 ........................ 2 .................1,175 ...........Turf 17.5L-24 ............. 1 ................1,195 .............................................. 2 ................1,370 ........ Turf 420 / 70R24 .......... 1 ................1,230 .............................................. 2 ................1,335

TG6490 (Center ROPS type) Tire type location size Setting (mm) Front tires ................................................................................................................. Agri 8-16 ...................................1,200 .............Agri 9.5-16 ..................................1,220

Tire type location size Ref. Setting (mm) Rear tires ................................................................................................................Agri 13.6-24 .............. 1 ................1,115 .............................................. 2 ................1,200 .............................................. 3 ................1,245 .............................................. 4 ................1,315 ............Agri 13.6-28 .............. 1 ................1,140 .............................................. 2 ................1,220 .............................................. 3 ................1,340 NOTE: For TG6490 standard type, 10x16.5 + 17.5L-24 and 280 / 70R16 + 420 / 70R24 turf tires are not available.

142

SPECIFICATIONS GENERAL DIMENSIONS Rear ROPS Type

A

G E

B

F

D C

Model

TG6370

Tire Type

Agri

Turf

Front

7-16

8-16

212 / 80D-15

260 / 70R16

Rear

12.4-24

13.6-24

355 / 80D-20

380 / 70R24

A

Height Over ROPS

mm

2,555

2,585

2,520

2,575

B

Width

mm

1,425 - 1,620

1,450 - 1,630

1,440 - 1,550

1,490 - 1,555

<Standard Type>3,195 (Length without front hitch : 3,175) <Dual Clutch Type>3,145 (Length without front hitch : 3,125) <Standard Type> 1,770 <Dual Clutch Type> 1,720

C

Overall Length

mm

D

Wheelbase

mm

E

Forward Overhang

mm

590 (Length without front hitch : 570)

F

Rear Overhang

mm

835

G

Ground Clearance

mm

310

335

340

395

Under the Front Axle

mm

400

425

390

415

Under the Rear Axle

mm

375

405

340

395

Turning Radius without Brake

m

3.0

Turning Radius with Brake

m

2.5

Weight (with fuel, oil, coolant)

kg

1,460

1,550

1,460

1,470

143

TG6370, 6400, 6490, 6620, 6670

Model

TG6400

Tire Type

Agri

Turf

Front

7-16

8-16

212 / 80D-15

260 / 70R16

Rear

12.4-24

13.6-24

355 / 80D-20

380 / 70R24

A

Height Over ROPS

mm

2,555

2,585

2,520

2,575

B

Width

mm

1,425 - 1,620

1,450 - 1,630

1,440 - 1,550

1,490 - 1,555

C

Overall Length

mm

3,195 (Length without front hitch : 3,175)

D

Wheelbase

mm

1,770

E

Forward Overhang

mm

590 (Length without front hitch : 570)

F

Rear Overhang

mm

835

G

Ground Clearance

mm

310

335

340

395

Under the Front Axle

mm

400

425

390

415

Under the Rear Axle

mm

375

405

340

395

Turning Radius without Brake

m

3.0

Turning Radius with Brake

m

2.5

Weight (with fuel, oil, coolant)

kg

1,490

1,580

1,490

1,500

Model

TG6490

Tire Type

Agri

Turf

Turf (ony Dual Clutch Type)

Front

8-16

9.5-16

212 / 80D-15 29x12.00-15

10x16.5

280 / 70R16

Rear

13.6-24

13.6-28

355 / 80D-20 475 / 65D-20

17.5L-24

420 / 70R24

A

Height

mm

2,305

2,355

2,240

2,265

2,320

2,325

B

Width

mm

1,530 - 1,685

1,565 - 1,675

1545

1,810

1,645 1,820

1,650 1,755

C

Overall Length

mm

3,455 (Length without front hitch : 3,435)

D

Wheelbase

mm

<Standard Type> 1,900, <Dual Clutch Type> 1,930

E

Forward Overhang

mm

695 (Length without front hitch : 675)

F

Rear Overhang

mm

860

G

Ground Clearance

mm

285

335

220

245

300

305

Under the Front Axle

mm

335

365

305

315

330

340

Under the Rear Axle

mm

285

335

220

245

300

305

Turning Radius without Brake

m

3.5

Turning Radius with Brake

m

2.8

Weight (with fuel, oil, coolant)

kg

1,750

1,840

1,840

1,720

1,770

1,700

NOTE: For TG6490 standard type, 10x16.5 + 17.5L-24 and 280 / 70R16 + 420 / 70R24 turf tires are not available.

144

SPECIFICATIONS Center ROPS Type

A

G E

B

Model

F

D C

TG6370

Tire Type

TG6490

Agri

Turf

Front

7-16

8-16

Rear

12.4-24

13.6-24

212 / 80D-15 355 / 80D-20

Agri

260 / 70R16

8-16

9.5-16

380 / 70R24

13.6-24

13.6-28

A

Height Over ROPS

mm

2,240

2,265

2,200

2,260

2,345

2,395

B

Width

mm

1,425 - 1,620

1,450 - 1,630

1,440 - 1,550

1,490 - 1,555

1,460 - 1,660

1,485 - 1,685

C

Overall Length

mm

3,195

3,455

D

Wheelbase

mm

1,770

1,900

E

Forward Overhang

mm

590

695

F

Rear Overhang

mm

835

860

G

Ground Clearance

mm

310

335

340

395

310

360

Under the Front Axle

mm

400

425

390

415

335

365

Under the Rear Axle

mm

375

405

340

395

310

360

Turning Radius without Brake

m

3.0

3.5

Turning Radius with Brake

m

2.5

2.8

Weight (with fuel, oil, coolant)

kg

1,510

1,525

145

1,510

1,600

1,740

1,800

TG6370, 6400, 6490, 6620, 6670 CABIN Type

A

G E

B

F

D C

Model

TG6370

Tire Type

Agri

Turf

Front

7-16

8-16

212 / 80D-15

260 / 70R16

Rear

12.4-24

13.6-24

355 / 80D-20

380 / 70R24

A

Height

mm

2,260

2,290

2,220

2,280

B

Width

mm

1,425 - 1,620

1,450 - 1,630

1,440 - 1,550

1,490 - 1,555

C

Overall Length

mm

3,145 (Length without front hitch : 3,125)

D

Wheelbase

mm

1,720

E

Forward Overhang

mm

590 (Length without front hitch : 570)

F

Rear Overhang

mm

835

G

Ground Clearance

mm

310

335

340

395

Under the Front Axle

mm

400

425

390

415

Under the Rear Axle

mm

375

405

340

395

Turning Radius without Brake

m

3.0

Turning Radius with Brake

m

2.5

Weight (with fuel, oil, coolant)

kg

1,625

1,630

1,625

1,645

146

SPECIFICATIONS

Model

TG6400

Tire Type

Agri

Turf

Front

7-16

8-16

212 / 80D-15

260 / 70R16

Rear

12.4-24

13.6-24

355 / 80D-20

380 / 70R24

A

Height

mm

2,260

2,290

2,220

2,280

B

Width

mm

1,425 - 1,620

1,450 - 1,630

1,440 - 1,550

1,490 - 1,555

C

Overall Length

mm

3,195 (Length without front hitch : 3,175)

D

Wheelbase

mm

1,770

E

Forward Overhang

mm

590 (Length without front hitch : 570)

F

Rear Overhang

mm

835

G

Ground Clearance

mm

310

335

340

395

Under the Front Axle

mm

400

425

390

415

Under the Rear Axle

mm

375

405

340

395

Turning Radius without Brake

m

3.0

Turning Radius with Brake

m

2.5

Weight (with fuel, oil, coolant)

kg

1,660

1,665

1,665

1,680

Model

TG6490

Tire Type

Agri

Turf

Front

8-16

9.5-16

212 / 80D-15 29x12.00-15

10x16.5

280 / 70R16

Rear

13.6-24

13.6-28

355 / 80D-20 475 / 65D-20

17.5L-24

420 / 70R24

2,355

2,320

2,325

A

Height

mm

2,305

B

Width

mm

1,530 - 1,685

C

Overall Length

mm

D

Wheelbase

mm

<HST Type> 1,900, <Dual Clutch Type> 1,930

E

Forward Overhang

mm

695 (Length without front hitch : 675)

F

Rear Overhang

mm

860

G

Ground Clearance

mm

285

335

220

245

300

305

Under the Front Axle

mm

335

365

305

315

330

340

Under the Rear Axle

mm

285

335

220

245

300

305

Turning Radius without Brake

m

3.5

Turning Radius with Brake

m

2.8

Weight (with fuel, oil, coolant)

kg

1,930

2,020

2,020

1,900

2,240

2,265

1,645 1,650 1,565 1545 1,810 - 1,675 1,820 1,755 <HST Type> 3,455 (Length without front hitch : 3,435) <Dual Clutch Type> 3,485 (Length without front hitch : 3,465)

1,960

147

1,880

TG6370, 6400, 6490, 6620, 6670

Model

TG6620/6670

Tire Type

A

Agri

Turf

Front

8-16

9.5-16

212 / 80D-15 29x12.00-15

10x16.5

280 / 70R16

Rear

13.6-24

13.6-28

355 / 80D-20 475 / 65D-20

17.5L-24

420 / 70R24

mm

2,305

2,355

1,530 - 1,685

1,565 - 1,675

Height

2,240

2,320

2,325

1,810

1,645 1,820

1,650 1,755

B

Width

mm

C

Overall Length

mm

3,455 (Length without front hitch : 3,435)

D

Wheelbase

mm

1,980

E

Forward Overhang

mm

615 (Length without front hitch : 595)

F

Rear Overhang

mm

860

G

Ground Clearance

mm

285

335

220

245

300

305

Under the Front Axle

mm

335

365

305

315

330

340

Under the Rear Axle

mm

285

335

220

245

300

305

Turning Radius without Brake

m

3.5

Turning Radius with Brake

m

2.8

Weight (with fuel, oil, coolant)

kg

1,970

2,060

2,060

1,940

2,000

148

1545

2,265

1,920

SPECIFICATIONS AXLE LOADS & TIRE LOAD CARRYING CAPACITY TABLE 30: Load capacity Front Tire Maximum Load Capacity Front Axle Size Load (kg) (kg) Agri 7-16 810 810 Agri 8-16 950 950 TG6370 TG6400 Turf 212 / 80D-15 870 870 Turf 260 / 70R16 1,100 870 Agri 8-16 950 950 Agri 9.5-16 1,450 1,350 TG6490 Turf 212 / 80D-15 870 870 TG6620 Turf 29X12.00-15 1,620 1,350 TG6670 Turf 10x16.5 1,250 1,250 Turf 280 / 70R16 1,120 1,120 The load capacity is the 1 on 2 tires Model

Tire Type

Rear Tire Maximum Load Capacity Rear Axle Size Load (kg) (kg) 12.4-24 1,770 13.6-24 2,080 1,500 355 / 80D-20 1,650 380 / 70R24 1,770 13.6-24 2,080 2,000 13.6-28 2,710 2,000 355 / 80D-20 1,650 1,650 475 / 65D-20 2,360 2,000 17.5L-24 2,430 2,000 420 / 70R24 1,900 1,900

Maximum Total Load (kg) 2,310 2,450 2,370 2,370 2,950 3,350 2,520 3,350 3,250 3,020

NOTE: For TG6490 center ROPS type, turf tire is not available.

NOTE: For TG6490 standard type, 10x16.5 + 17.5L-24 and 280 / 70R16 + 420 / 70R24 turf tires are not available.

NOISE DECLARATION TABLE 31: Driver perceived sound level (2009 / 76 / EC Annex II) Model

TG6370

TG6400

TG6490

TG6620 / 6670

Type

ROPS / Cabin

Cab / openings closed

Cab / openings open

ROPS

Standard Dual Clutch Dual Clutch HST HST Standard Standard HST Dual Clutch Dual Clutch HST

ROPS ROPS Cabin ROPS Cabin ROPS (Center ) ROPS (Rear) Cabin ROPS Cabin Cabin

(dB(A)) ----80.6 --83.4 ----84.1 --82.2 82.5

(dB(A)) ----81.6 --84.5 ----85.6 --84.6 82.9

(dB(A)) 85.0 84.3 --83.9 --89.9 (Annex I) 89.9 (Annex I) ---------

TABLE 32: Results of the sound level tests (2009 / 63 / EC Annex VI) Model

TG6370 TG6400 TG6490 TG6620 / 6670

Type Standard Dual Clutch HST Standard HST Dual Clutch HST

ROPS / Cabin ROPS ROPS / Cabin ROPS / Cabin ROPS Cabin ROPS / Cabin Cabin

149

Moving

Stationary

Engine Speed

(dB(A)) 80 80 80 83 82 81 86

(dB(A)) 79 74 80 83 83 76 81

(min-1) 2,860 2,145 2,860 2,860 2,860 2,145 2,048

TG6370, 6400, 6490, 6620, 6670 VIBRATION DECLARATION (78 / 764 / EEC) Vibration Transmission The test has been performed on a test stand TABLE 33: COBO GT62 / M200 Corrected weighted vibration acceleration Applied mass awS* (<1.25m / s2) Light 1.22 m / s2 Heavy 1.06 m / s2 TABLE 34: GRAMMER MSG83 / 521 Corrected weighted vibration acceleration Applied mass awS* (<1.25m / s2) Light 1.13 m / s2 Heavy 1.00 m / s2 TABLE 35: GRAMMER MSG93 / 521 Corrected weighted vibration acceleration Applied mass awS* (<1.25m / s2) Light 1.21 m / s2 Heavy 1.05 m / s2 TABLE 36: KAB XH2 / P6 (Heaviest seat upper (13.5 kg)) Corrected weighted vibration acceleration Applied mass awS* (<1.25m / s2) Light 1.17 m / s2 Heavy 0.93 m / s2 TABLE 37: KAB XH2 / P6 (Lightest seat upper (4.0 kg)) Corrected weighted vibration acceleration Applied mass awS* (<1.25m / s2) Light 1.14 m / s2 Heavy 0.98 m / s2 FRONT WEIGHT The tractor should be balanced well with attaching the front weight to the front bumper when the heavy implement is attached to the rear side of the tractor. When attaching the front weights, consult your dealer.

NOTE: Maximum number of the front weights are up to 6 weights.

Maximum Weight 90 kg (15 kg x 6 pieces) ATTACHMENT (OPTION) TABLE 38: List of attachment (option) Front Bumper (except Center ROPS type) Rear Wiper (for CABIN) Room Mirror (for CABIN) Sun Visor (for CABIN) Radio Antenna (for CABIN) MID PTO NOTE: When attaching non-ISEKI authorized parts, consult your dealer.

150

MEMO

151

TG6370, 6400, 6490, 6620, 6670

INDEX Numeric

D

3-point linkage 68, 71 4-wheel drive 62 7-pin socket 88

defrosting 98 differential lock 62 dimensions 143 dismantling and disposal 15 doors lock / unlock 90 opening / closing 90 draft control 75 drawbar 76

A adjustment brake 124 comfort 83 fore-aft 84, 85 height 84, 85 speed 55 weight 84, 85 air-bleeding fuel system 114, 116 air conditioner 95 air vents 97 anti-freeze 110 attachment 150 auxiliary power supply connector 88 axle loads & tire load carrying capacity 149

E EDT connector 88 electrical system 117, 137, 141 electric system 16 electric wiring 16 engine 135, 139 engine air cleaner 112 engine oil 105, 106 engine hourmeter 37 engine speed controls 49, 52, 56 external auxiliary hydraulics 79 external auxiliary hydraulics lever 79 external auxiliary power supply connector 88

B battery 16, 117 booster cables 17 brake 41, 136 brake pedal 41 break-in period 43

F falling objects protective structure 86 fan belt 111 fault code list 138 filter engine oil & 105, 106 transmission oil & 107 forward / reverse lever 49, 52, 56 front axle end-float (4WD) 128 front axle oil 108 front loader fixation point 86 front weight 150 front wheel alignment 125 front wheel spacing 126 fuel filter 113, 115 fuel gauge 36 fuel system 113, 115 fuel tank filler cap 114, 116 fuse location 120, 121, 122, 123

C capacities 99, 142, 149 changing the traveling speed 50, 57 cleaning air cleaner / vacuator valve 112 clutch 136 clutch free-play 124 clutch housing plug 128 clutch pedal 41 cold weather starting 47 coolant 109 coolant temperature gauge 37 cooling 98, 109 corner windows 92 cruise control 54

152

INDEX

G

N

grease fittings 105 gear shift display 37

noise declaration 149 normal starting 44, 45, 46

H

O

heating 98 hood opening / closing 104 HST pedal 53 HST stage selection 55 HST system 138 hydraulic system 137, 141 hydraulic valves 79

operation 30 another person 8 before 9 during 13 joystick 77, 78 operator observations 48 operators protection structure 86

I

parking brake lever 42 position control 68, 69, 74 power take-off (PTO) 63, 140 pre-start inspection 43

P

implement attaching 73 detaching 76 indicator light array 35 inspection 14 instrument panel 34 introduction 24

R radiator 109 rear hitch 81 rear PTO speed indication 38 rear PTO operating control 67 rear PTO selector lever 66 rear PTO shaft 63 rear wheel spacing 126 rear window 91 restarting warm engine 47 roll over protective structure 80 room lamp 92

J jacking 87 joystick 77 control lever 77 lockout 77 operation 77, 78

L liquid crystal display 36 lubrication 100, 101, 105 details 105 fill points 100, 101

M machine purpose 6 maintenance 14, 102 safety 7 major components 27 major consumables list 131, 133 mid PTO speed indication 38 mid PTO operating control 67 mid PTO selector lever 66 mid PTO shaft 64 model / serial number 26 model type designation 25

153

TG6370, 6400, 6490, 6620, 6670

S

T

safety 6 loading onto or unloading from a truck 12 maintenance 7 operation 8 personal 6 starting engine and operating tractor 10 when traveling 10 safety decals 18 location of 22 maintenance 21 seat & suspension 84 service access 104 shift lever 50, 53, 57 side cover 94 specifications 104 ramps 12 specifications & capacities 99 starting 43 starting circuit 48 statutory plate 25 steering column tilt 83 steering free-play 128 steering system 137 stopping tractor 59, 60, 61 storage 15, 129 switch display select 38 emergency engine stop 41 fan speed control 95 horn 40 lamp 40 main 34 PTO 65 PTO selectable 65 safety 119 wiper and washer 94

table of contents 3 tachometer 36 temperature adjustment 96 throttle lever 114, 116 tire inflation pressures 125 tool box 83 to our customer 1 torque chart 128 towing 86 tractor identification 25 transmission system 140 traveling speed indication 38 traveling speed selection 49, 52, 56 tread width setting 142 troubleshooting 135

V ventilation control lever 96 vibration declaration 150

W warm up period 47 washer reservoir 95 washing of the machine 130 wheel bolt torque 125 wheels & tires 125 wiring diagram 155 wiring / fuse arrangement 119 work lamps 93

154

WIRING DIAGRAM

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Overseas Business Division 5-3-14, Nishi-Nippori, Arakawa-ku, Tokyo 116-8541, Japan Phone: (03) 5604-7658 Fax: (03) 5604-7703

Parts code: 1815-912-103-1E-EN Publishing date: 18 September 2017 Printed in Japan