Case 2550 Crawler Dozer Operator's Manual 84415720 - PDF DOWNLOAD

2550

2550 Crawler Dozer Crawler Dozer

Operator’s Manual Print No. 84415720

1st edition English 02/11

from serial no: FNH02550NBHC00001

2550 Crawler dozer

Operator's Manual Print No. 84415720 (II - 2011)

WARNING STUDY THE OPERATION AND MAINTENANCE INSTRUCTION MANUAL THRUOGH BEFORE STARTING, OPERATING, MAINTAINING, FUELING OR SERVICING THIS MACHINE.

This symbol is your safety alert sign. It MEANS ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED.

Read and heed all safety instructions carrying the signal words WARNING and DANGER.

Machine mounted safety signs have been color coded yellow with black borders and lettering for WARNING and red with white borders and lettering for DANGER points.

WARNING! STUDY THE OPERATION AND MAINTENANCE INSTRUCTION MANUAL THRUOGH BEFORE STARTING, OPERATING, MAINTAINING, FUELING OR SERVICING THIS MACHINE.

IMPORTANT INFORMATION This machine has been designed and manufactured to excavate and move earth and loose materials only. Any other use will be considered contrary to the use intended by the Manufacturer who, consequently, cannot result responsible for damages to property and the machine itself, nor for injuries eventually resulting to persons. It must be considered that in taking the risks of an improper use you also also incur in the resulting responsibilities.

Respecting the procedures for the operation, maintenance and repair described in this Manual are essential elements qualifying the use intended by the Manufacturer.

This machine must be operated, maintained and repaired exclusively by personnel previously trained on the machine and the relevant safety rules and for the prevention of accidents, such as the Highway circulation rules, in case of roading on public highways.

Any arbitrary modification made to this machine frees the Manufacturer from all responsibilities deriving from damages or injuries.

Neither the Factory nor any Organizations in its Distribution Network, including but not limited to national, regional or local distributors, are responsible for any liability arising from any damage resulting from defects caused by parts and/or components not approved by the Factory for use in maintaining and/or repairing products manufactured or merchandized by the Factory.

In any case, no warranty of any kind is made or shall be imposed with respect to products manufactured or mrchandized by the Factory, when failures are caused by the use of parts and/or components not approved by the Factory.

UNIT SERIAL NUMBER TYPE OF ENGINE ENGINE SERIAL NUMBER

TABLE OF CONTENTS

TITLE

PAGE

Safety rules .................................................................................................................................................I-VII Foreword ....................................................................................................................................................... VIII Identification data ............................................................................................................................................. 2 SPECIFICATIONS ........................................................................................................................................... 4 Main dimensions .............................................................................................................................................. 7 Stability ............................................................................................................................................................ 8 Quantitative sides of comfort ........................................................................................................................... 8 List and position of safety decals ..................................................................................................................... 9 Preliminary instructions and break-in period ....................................................................................................21 OPERATING WARNINGS ..............................................................................................................................22 Controls and instruments ................................................................................................................................23 Instrument panel .............................................................................................................................................28 OPERATING INSTRUCTIONS .......................................................................................................................30 Starting the engine ..........................................................................................................................................30 Working of the engine at minimum speed ........................................................................................................31 Starting machine. ............................................................................................................................................31 Stopping the machine .....................................................................................................................................32 Stopping the engine ........................................................................................................................................32 Operator’s seat adjustment .............................................................................................................................33 Fuel tank .........................................................................................................................................................33 Blade adjustment ............................................................................................................................................34 Cab tilting ........................................................................................................................................................34 Oil filling and air bleeding in cab tilting system ................................................................................................35 Instructions for lowering the equipment to the ground with engine inoperative .................................................35 Moving the machine with external help ............................................................................................................36 Towing or recovering the machine ...................................................................................................................37 Cold weather precautions ................................................................................................................................37 Machine storage .............................................................................................................................................38 Roll Over Protection Structure R.O.P.S. .........................................................................................................39 SAFETY CAB .................................................................................................................................................40 Door ................................................................................................................................................................40 Back window pane ..........................................................................................................................................41 Cab done lighting ............................................................................................................................................42 Cab heating and ventilation .............................................................................................................................42 Air conditioner .................................................................................................................................................42 Wiper ..............................................................................................................................................................43 Accessory equipment .....................................................................................................................................44 Fire protection .................................................................................................................................................45 Emergency lighting for repairs maintenance ....................................................................................................45 MACHINE OPERATION .................................................................................................................................46 MAINTENANCE ..............................................................................................................................................54 Walk around inspection ...................................................................................................................................55 Maintenance operations ..................................................................................................................................56 List of tools provided .......................................................................................................................................57 List of programmed maintenance operations ...................................................................................................58 Every 10 hours ................................................................................................................................................59 Every 100 hours ..............................................................................................................................................60 Every 250 hours ..............................................................................................................................................61 Every 500 hours ..............................................................................................................................................62 Every 1000 hours ............................................................................................................................................66 Every 2000 hours ............................................................................................................................................73 When required .................................................................................................................................................75 Variable periodic services ...............................................................................................................................78 ELECTRICAL SYSTEM ..................................................................................................................................80 TROUBLESHOOTING ....................................................................................................................................85 List of residual dangers ...................................................................................................................................91 FLUID CAPACITIES .......................................................................................................................................92

SAFETY RULES GENERALITIES Check brakes, steering and attachment controls before moving. Advise the proper maintenance authority of any malfunctioning part or system.

Study this Manual before starting, operating, maintaining, fuelling or servicing the machine.

Read and heed all safety rules before any intervention.

Do not allow unauthorised personnel to operate service or maintain this machine.

Be sure all protective guards or panels are in place, and all safety devices provided are in place and in good operating conditions.

Avoid seating in the operator’s compartment and start working if feeling in poor health conditions.

Be sure exposed personnel in the area of operation are clear of the machine before moving it or its attachments.

Do not wear rings, wrist watches, jewellery, loose or hanging apparels, such as ties, torn clothing, scarves, unbuttoned or unzipped jackets that can catch on moving parts. Wear proper safety equipment as recommended for the job. Examples: hard hat, heavy gloves, ear protection, safety glasses or goggles, reflector vests, respirator. Consult your employer for specific safety equipment requirements.

WALK COMPLETELY AROUND the machine before mounting. Sound horn. Obey flag man, safety signals and signs.

Keep operator’s compartment, stepping points, grab-rails and handles clear of foreign objects, oil, grease, mud or snow accumulation to minimize the danger of slipping or stumbling. Clean mud or grease from shoes before attempting to mount or operate the machine.

Obey all flag signals and signs.

Do not jump on or off the machine. Keep two hands and one foot, or two feet and one hand in contact with step grab rails and handles at all times.

REMEMBER THAT STARTING FLUID IS FLAMMABLE. Follow recommendations printed on containers and in the Operation and Maintenance Manual.

Do not use controls or hoses as hand holds when climbing on or off machine. Hoses and controls are movable and do not provide a solid support. Controls also may be inadvertently moved causing accidental machine or equipment movement.

DO NOT PUNCTURE OR BURN CONTAINERS.

Never attempt to operate the machine or its tools from any position other than seated in the operator’s seat.

Never use these preducts near open flames, smoking materials or sparks.

Keep head, body, limbs, hands and feet inside operator’s compartment at all times to reduce exposure to hazards outside the operator’s compartment.

OPERATION

Before starting machine, check, adjust and lock the operator’s seat for maximum comfort and control of the machine.

Fasten your seat belt (when provided).

Due to the presence on the machine of flammable fluids, never check or fill fuel reservoirs or batteries near open flames, smoking materials or sparks.

Containers must be stored in fresh, well ventilated places, out of reach of unauthorised persons. Follow strictly the instructions provided by the Manufacturer.

Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust gases.

Be careful of slippery conditions on stepping points, hand rails, and on the ground. Wear safety boots or shoes that have a high slip resistant sole material.

Roll Over Protective Structures are required on loaders, dozers, graders, excavators. NEVER OPERATE machines without ROPS.

Do not leave the machine until it is completely stopped.

Check the seat safety belt at least twice a year. If there are signs of wear or fraying or other signs of weakness that could lead to failure, replace it.

Make sure the Operator’s compartment is free of foreign objects, especially if not firmly secured. Never use the machine to transport objects, unless proper securing points are provided.

STARTING

Check monitoring instruments at start-up and frequently during operation if the brake pressure gauge sugnals a pressure lower than the minimum operation value, stop immediately the machine.

NEVER START OR OPERATE AN UNSAFE MACHINE. Before operating a machine, always ensure that any unsafe condition has been satisfactorily remedied.

I

SAFETY RULES Be sure chains and cables are anchored and the anchor points are strong enough to handle the expected load.

Keep exposed personnel clear of anchor points and cables or chains.

DO NOT CARRY RIDERS ON MACHINE Study and familiarize with escape routes alternate to normal exit routes.

DO NOT PULL UNLESS OPERATOR’s COMPARTMENT OF MACHINES INVOLVED ARE PROPERLY GUARDED AGAINST POTENTIAL CABLE OR CHAIN BACKLASH.

Seat belts are required to be provided with Roll Over Protection Structures or cabs. Keep safety belts fastened around you during operation.

For your personal protection, do not climb on or off machine while machine in motion.

Be alert to soft ground conditions close to newly constructed walls. The fill material and weight of the machine may cause the wall collapse under the machine.

Make sure that exposed persons in the area of operation are clear of the machine, before starting the engine and operating the equipment.

In darkness, check area of operation carefully before moving in with machine. Use all lights provided. Do not move into area of restricted visibility.

Obey all indications provided by flags and signals.

If engine has a tendency to stall for any reason under load or idle, report this for adjustment to proper maintenance authority immediately.

Do not continue to operate machine, until condition has been corrected.

NEVER COAST the machine down grades and slopes with the transmission in neutral or neutralized, or power shift type machines, or clutch disengaged on manually shifted machines.

Do not operate machinery in a condition of extreme fatigue or illness. Be especially careful towards the end of working shift.

On machines supplied with suction radiator fans, be sure to periodically check engine exhaust parts for leaks, as exhaust fumes are dangerous to the operator.

Do not operate machine with brakes out of adjustment.

In case of enclosed cabs, always let open a discharge to the outside, to ensure air circulation.

Operate the machine at speeds slow enough to ensure complete control at all times.

Operators must know thoroughly the performances of the machine they are operating. When working on slopes or near sudden level drops of the terrain, avoid areas where ground is loose or soft since rolling-over or loss of control of machine could result.

Travel slowly over rough terrain, on slopes or near dropoffs, in congested areas or on ice or slippery surfaces.

When backing, always look to where the machine is to be moved. Be alert to the position of exposed personnel.

Where noise exposure exceeds 90 dBA for 8 hours, wear approved ear protection.

DO NOT OPERATE if exposed personnel enter the immediate work area. STOP THE MACHINE.

When counterweights are provided, do not work machine if they have been removed.

Maintain a safe distance from other machines. Provide sufficient clearance for ground and visibility conditions.

Yield right-of-way to loaded machines.

Overtaking manoeuvres must be performed only when absolutely necessary and unavoidable.

Beware of possible uneven terrains, poor visibility conditions, the presence of other machinery or persons out of sight.

Maintain clear vision of areas of travel or work. Keep cab windows clean and repaired.

When machines are operating in tandem, the pusher (rear) must be equipped with the appropriate deflectors to protect the unit in front from the air stream coming from the radiator.

Operate the machine at a speed adequate to the working conditions in the site and slow enough to ensure complete control at all times.

When pulling or towing through a cable or chain, do not start suddenly at full throttle; take-up slack carefully.

Check monitoring instruments at start-up and frequently during operations.

In case of abnormal condition warnings, stop immediately the machine.

Inspect carefully for flaws or troubles before using.

Avoid kinking chains or cables. Do not pull through a kinked chain or cable to the high stresses and possibility of failure of the kinked area. Always wear heavy gloves when handling chains or cables.

Never use the machine as a work platform or scaffolding, nor other inappropriate operations (i.e pushing railway cars, trucks or other machines).

II

SAFETY RULES Working in virgin and rough terrains is characterized by the presence of all the perils and risks listed above. In these conditions, it is emphasised the danger represented by large tree limbs (possibly falling on the machine), large roots (acting as a leverage under the machine when uprooted causing the roll-over of the unit) etc..

Be alert of people in the operating area of the machine.

When operating a machine, know what clearances will be encountered, overhead doors, cables, pipes, bearing load limitations of ground, bridges, floors or ramps.

When roading, find-out what conditions are likely to be encountered, clearances, traffic congestion, type of road surfacing, etc. Beware of fog, smoke or dust elements that obscure visibility.

When crossing gullies or ditches, move at an angle with reduced speed after ensuring ground conditions will permit a safe traverse.

STOPPING When the machine is stopped for whatever reason, follow the instructions of chapters “Stopping the machine” and “Stopping the engine” of the Operation and Maintenance Instruction Manual.

Explore the working area to identify potential risks such as: slopes, overhangs, pits, demolition rubble, fires, ravines, ditches, soft terrain, heavy traffic, crowded parking areas, closed ambients. In such conditions, proceed with extreme care.

Always remember to position the transmission drive control in neutral and engage the control lock to secure the machine.

Whenever possible, avoid going over obstacles such as rough terrain, rocks, logs highly irregular ground, steps, ditches, railroad tracks. When obstructions must be crossed, do so with extreme care at an angle, if possible.

Reduce speed, shift-down. Ease up to the break over point, pass the balance point slowly on the obstruction and ease down on the other side.

Set parking brake.

NEVER LEAVE THE MACHINE UNATTENTED with the engine running.

Always before leaving the operator’s seat and after making sure all people are clear of the machine, slowly lower the attachments or tools flat to the ground in a positive ground support position.

In steep down-hill operation, do not allow engine to overspeed. Select proper gear before starting down grade.

Avoid side hill travel, whenever possible. Drive up and down the slope. Should the machine slipping sideways, turn it immediately downhill.

Return the controls in neutral position. Place the gearshift lever in neutral and shut-off the engine. Lock the gearshift lever, switch-off and lock the starter switch.

Refer to the relevant chapter in this Manual

The grade of slope you should attempt will be limited by factors such as condition of the ground, load being handled, type of machine, speed of machine and visibility.

Park in a non- operating and no-traffic area or as instructed.

Park on firm level ground if possible. Where not possible, position machine at a right angle to the slope, making sure there is no danger of uncontrolled sliding movements. Set parking brake.

There is no substitute for good judgement when working on slopes.

Avoid operating equipment too close to an overhang or high wall, either above or below the machine. Be on the look-out for caving edges, falling objects and slides. Beware of concealment by brush and undergrowth of these danger.

If parking in traffic lanes cannot be avoided, provide appropriate flags, barriers, flares and signals as required.

Also provide advance warning signals in the traffic lane of approaching traffic.

When pushing-over trees, the machine must be equipped with proper overhead guarding. Never allow a machine to climb up on the root structure particularly while the tree is being felled. Use extreme care when pushing over any tree with dead branches.

Keep head, body, limbs, hands and feet away from blade, arms, bucket or ripper when in raised position.

Always disconnect the master switch before any intervention (i.e. cleaning, repairing, maintaining, refuelling etc.).

Avoid brush piles, logs or rocks. NEVER DRIVE OVER THEM or other surface irregularities that brake traction with the ground, especially when on slopes or near drop-offs.

Do the same when parking for prolonged periods of time to avoid accidental or unauthorized starting.

Be alert to avoid changes in traction conditions that could cause loss of control. DO NOT DRIVE on ice or frozen ground conditions when working the machine on steep slopes or near drop-offs.

Never lower attachments or tools other than seated in operator’s seat. Sound horn. Make sure area near the attachment is clear. Lower the attachment slowly. DO NOT USE FLOAT POSITION of hydraulic system.

III

SAFETY RULES Keep shoes free of mud or grease before climbing or driving the machine.

Securely block the machine and lock it every time you leave it unattended. Return keys to authorized security.

Heed all shut-down operations of the Operation and Maintenance Instruction Manual are followed. Every time you leave the machine, engage parking brake (if equipping unit).

Never attempt to operate the machine or its tools from any position other than seated in the operator’s seat.

When maintenance operations require moving hydraulically operated attachments by means of machine’s hydraulic system remember that all manoeuvres must be made only when seated in the operator’s seat. Before starting machine or moving attachment or tools, set brakes, sound horn and call for an all clear. Raise attachment slowly.

MAINTENANCE

Always block with external supportsany linkage or part on machine that requires work under the raised linkage, part or machine. Never allow anyone to walk under or be near unblocked raised equipment. Unless your are positively sure that total safe condition exist, avoid staying under raised equipment, even if blocked.

GENERALITIES Before operating or performing any intervention on the machine: - read carefully all the rules contained by this Manual; - read and obey all safety related plates and instructions located on the machine.

Never place head, body, limbs, fingers, feet or hands into exposed portions between uncontrolled or unguarded scissor points of machine without first providing secure blocking.

Do not allow unauthorized personnel to perform any maintenance operation. Do not perform maintenance operation without prior authorization. Follow all recommended maintenance and service procedures.

Never perform interventions with engine running, except as called for in a Manual. Do not wear loose clothing or jewellery near moving parts.

Keep operator’s compartment free of all loose objects that are not properly secured.

When servicing or maintenance require access to areas that cannot be reached from the ground, use a ladder or step platform that meet local and national regulations, to reach the service point. If such ladder or platform are not available, use the machine hand holds and steps as provided. Perform all service or maintenance carefully.

Do not wear rings, wrist watches, jewellery, loose or hanging apparels, such as ties, torn clothing, scarves, unbuttoned or unzipped jackets that can catch on moving parts. Wear proper safety equipment as recommended for the job. Examples: hard hat, heavy gloves, ear protection, safety glasses or goggles, reflector vests, respirator. Consult your employer for specific safety equipment requirements.

Shop and/or field service platforms or ladders must be constructed and maintained in accordance with local and national regulations.

Disconnect batteries and TAG all controls according to current regulations to warn that work is in progress. Block machine and all attachments that must be raised according to current regulations.

Due to the presence of flammable fluids, never check or fill fuel tanks, batteries, nor use starting fluid near lighted smoking materials or open flames.

Do not use controls or hoses as handholds when climbing on or off the machine. These components are movable and do not provide a solid support. Controls may also be moved unintentionally causing accidental machine or equipment movements.

Do not jump on or off the machine. Keep two hands and one foot, or two feet and one hand in contact with steps and grab rails and handles at all times.

BRAKES ARE INOPERATIVE when manually released for servicing. Provisions must be made to maintain control of the machine by blocking or other means.

Do not perform any service operation on the machine with a person seated in the operator’s compartment, unless he is an authorized operator co-operating in the operation to be performed.

The fuel filling nose must be kept constantly inside the filling neck. Keep this contact from the beginning to the end of the fuelling operation to avoid the possibility that sparks due to static electricity are generated.

Keep operator’s compartment, stepping points, grab-rails and handles clear of foreign objects, oil, grease, mud or snow accumulation to minimize the danger of slipping or stumbling.

Clean mud or grease from shoes before attempting to mount or operate the machine.

Use only designated towing or attaching points. Use care in making attachments. Make sure pins and/or locks are secure before pulling. Stay clear of drawbars, cables or chains under load.

IV

SAFETY RULES To move a disabled machine, use a trailer or a low-boy, if available. In case towing is needed , use all necessary signals required by local and national regulations, and follow the directions provided in this Manual.

For field service, move machine to level ground, if possible, and block it. If work on an incline is absolutely necessary, first block machine and its attachments securely, than move it to level ground as soon as possible.

To load/unload a machine from transporter, choose a level surface ensuring firm support to the wheels of truck or trailer. Use strong access ramps, with adequate height and angle. Keep surface free of mud, oil or slippery materials.

Do not trust worn and /or kinked chains and cables: do not use them for lifting or pulling operations. To handle them, always use heavy gloves.

Avoid kinking chains or cables. Do not pull through a kinked chain or cable to the high stresses and possibility of failure of the kinked area. Always wear heavy gloves when handling chains or cables.

Anchor the machine securely to the bed of truck or trailer and block wheels or tracks with appropriate wedges.

Never align holes with fingers or hands; always use appropriate aligning tools.

Be sure chains and cables are anchored and the anchor points are strong enough to handle the expected load.

Eliminate all sharp edges and burrs from re-worked parts.

Keep exposed personnel clear of anchor points and cables or chains.

Use only approved grounded auxiliary power sources for heaters, chargers, pumps and similar equipment to reduce the hazards of electrical shocks.

DO NOT PULL UNLESS OPERATOR’s COMPARTMENT OF MACHINES INVOLVED ARE PROPERLY GUARDED AGAINST POTENTIAL CABLE OR CHAIN BACKLASH.

Lift and handle heavy parts with a lifting device of proper capacity. Be sure parts are supported by proper slings and hooks. Use lifting eyes if provided. Watch-out for people in the vicinity.

Keep the area where maintenance operations are performed CLEAN and DRY. Eliminate immediately all water and oil spillages.

Never pour gasoline or diesel fuel into open, wide and low containers. Never use gasoline, solvent or other flammable fluid to clean parts.

Use exclusively qualified, non-flammable, non-toxic commercial solvents.

Do not pile oily or greasy rags; they represent a fire hazard.

Store in closed metal container.

Before starting machine, check, adjust and lock the operator’s seat for maximum comfort and control of the machine.

Be sure exposed personnel in the area of operation are clear of the machine before moving it or its attachments.

Sound horn.

When using compressed air for cleaning parts, use safety glasses with side shields or goggles. Limit pressure to 2 bar, in accordance with local and national regulations.

Do not run the engine in closed areas without proper ventilation to remove deadly exhaust fumes.

Rust inhibitors are volatile and flammable Use only in well ventilated areas. Keep open flames away - DO NOT SMOKE - Store containers in a cool well ventilated place, secure against unauthorised personnel.

Do not smoke or permit any open flames or spark near when re-fuelling or handling flammable materials.

Do not carry loose objects in pockets that might fall unnoticed into open compartments.

Do not use an open flame as a light source to look for leaks or for inspection anywhere on the machine.

Wear proper protective equipment such as safety goggles or safety glasses with side shields, hard hat, safety shoes, heavy gloves when metal or other particles are apt to fly or fall.

Make sure that all mechanic’s tools are in good conditions.

NEVER USE tools with mushroomed heads or frayed.

Always wear eye protections.

Wear welders protective equipment such as dark safety glasses, helmets, protective clothing, gloves and safety shoes, when welding or burning. Wear dark safety glasses near welding zones. DO NOT LOOK AT ARC WITHOUT PROPER EYE PROTECTION.

Move with extreme care when working under the machine, its attachments and or on or near them. Always wear protective safety equipment as required, such as hard hat, goggles, safety shoes, ear plugs.

When performing operations requiring running of the engine, have a qualified operator in the operator’s seat at all times with the mechanic on sight. Place the transmission in neutral and set the brakes and safety lock.

KEEP HANDS AND CLOTHING AWAY FROM MOVING PARTS.

Know your jacking equipment and its capacity. Be sure the jacking point used on the machine is appropriate for the load to be applied. Be sure the support of the jack at the machine and under jack is appropriate and stable. Loads lifted by hydraulic jacks are always dangerous.

V

SAFETY RULES Transfer load to appropriate blocking as a safety measure, before proceeding with service or maintenance work, according to local or national regulations.

Do not lubricate the machine with engine running.

Do not run the engine with air intakes, door or protections open.

Steel cables are frayed after prolonged use; always wear appropriate protections (heavy gloves, goggles etc.).

Handle all parts carefully. Keep hands and fingers away from structures, gears or moving parts. Use and wear always the appropriate protections

ELECTRICAL SYSTEM

Compressed air systems can have water deposits created by moisture condensation due to changes of atmospheric conditions. If required, discharge deposits, as instructed.

Always disconnect batteries prior to any intervention on machine or electrical system (cleaning, repair, maintenance).

Should booster batteries be used, remember to connect both ends of the booster cables in the proper manner (+) with (+) and (-) with (-). Avoid short-circuits of the terminals.

Follow thoroughly the instructions of this Manual.

STARTING

Before any intervention, make sure that the main switch is OFF.

Do not run the engine in closed areas without proper ventilation to remove deadly exhaust fumes.

BATTERY GAS IS HIGHLY FLAMMABLE. Leave battery box open to improve ventilation when recharging batteries. Never check charge by placing metal objects across the posts. Keep sparks or open flames away from batteries.

Do not smoke near battery to guard against the possibility of causing an explosion.

Do not place head, body, limbs, feet, hands or fingers, near rotating fans or belts.

Be especially alert near pusher fans.

REMEMBER THAT STARTING FLUID IS FLAMMABLE. Follow recommendations printed on containers and in the Operation and Maintenance Manual.

Containers must be stored in fresh, well ventilated places, out of reach of unauthorised persons. Follow strictly the instructions provided by the Manufacturer.

DO NOT PUNCTURE OR BURN CONTAINERS.

Before any intervention, make sure that there are no fuel or electrolyte leakages; eliminate them before proceeding with further work. Do not charge batteries in closed areas: ensure enough ventilation to prevent the possibility of accidental explosions due to accumulation of gases generated during the recharging.

ENGINE

HYDRAULIC SYSTEM

Loosen the radiator cap very slowly, to release pressure from the system, before removing it. All coolant level topups must be performed with engine OFF.

Fluid escaping under pressure from a very small hole can be almost invisible and can have sufficient force to penetrate the skin. Use a piece of cardboard or wood to search for suspected pressure leaks.

Avoid that flammable materials touch exhaust parts.

Should this be possible, provide the necessary protections.

DO NOT USE HANDS. If injured by escaping fluid, see a doctor at once. Serious infection or reaction can develop if proper medical treatment is not administered immediately.

Do not run engine when refuelling and use care if the engine is hot due to the increased possibility of a fire if fuel is spilled.

Stop the engine and release all pressures in the system before removing panels, housings, plugs or covers.

Never attempt to check or adjust fan belts when engine is running.

In case pressures must be measured, use instruments of adequate capacity. Always follow the recommended procedures.

Do not adjust engine fuel pump when machine is moving.

VI

SAFETY RULES TOOLS Keep head, body, limbs, feet, fingers or hands away from bucket, blade or ripper when in raised position.

Clutches and brakes of this machine and eventual auxiliary equipment and attachments (such as operating cylinder or winches control valves) must always be properly adjusted in accordance with the instructions provided by the Manuals of the Manufacturer. Never perform adjustments with engine running, except when called for by the above instructions.

Prior to any intervention, install all safety devices according to current rules and regulations. In case equipment on the machine must be operated by hydraulic systems, remember to proceed only after seating in the operator’s compartment. Make sure that there are no persons in the operating area of the machine. Alert people before operating using the horn and by voice. Move the equipment very carefully.

Do not proceed with adjustments with engine running, unless required by prescribed procedures.

When changing work shifts, check that there are no screws and/or mounting brackets loose. If required tighten as instructed in this publication.

Do not use machine to transport loose objects, unless proper devices for this purpose are provided.

WARNING On machines having hydraulically, mechanically, and/or cable controlled equipment (such as shovels, loaders, dozers, excavators etc.) be certain the equipment is lowered to the ground before servicing, adjusting and/or repairing. If it is necessary to have the hydraulically, mechanically, and/or cable controlled equipment partially or fully raised to gain access to certain items, be sure the equipment is suitably supported by means other than the hydraulic lift cylinders, cable and/or mechanical devices used for controlling the equipment.

VII

FOREWORD This manual was designed to serve as guidance for correct and safe operation of the machine and its systematic servicing.

The continued observance of the instructions provided herein will ensure best possible performance, operation economy and long life of the machine and will avoid the more common causes of accidents which may occur during work or maintenance operations.

As regards safety in particular, read carefully the general rules given on pages I through VII. The repair procedures for this machine are described in separate Service Publications obtainable from the Manufacturer’s Organisation.

Each machine is supplied with one copy of this manual. The descriptions and illustrations appearing in this manual are not binding. The Manufacturer reserves the right - while retaining the basic features of the model herein described and illustrated - to make at any time, and without necessarily bringing this manual up-to-date, any alteration to units, parts, accessories or their supply, deemed expedient for improvement or for any manufacturing or commercial reason. For any clarification refer to your Dealer who will provide any information you may need.

The information in this Manual was current at the time of publication. It is the Manufacturer’s policy to constantly improve its products. These changes may affect information outlined in this Manual. If variances are observed, verify the information through your Dealer.

VIII

2550

1

2550 Crawler dozer

2550-M001

The machine is shown with optional items.

WARNING Your safety and the safety of those around you depend upon the care and judgement you use in operating this machine and its equipment. Knowing the position of function of all controls is essential to this end.

Any equipment has limitations: understand the speed braking, steering, stability and working characteristics of the machine before starting to operate.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

2

IDENTIFICATION DATA

a

b

c

D255-2M002

a. Engine type and serial number: on the left side (front of the engine). b. Machine i.d. data plate, including serial number of machine and engine type: on ROPS support under cab left door. c. Machine serial number: rear left side of machine.

SERVICE

SPARE PARTS

Repairs involving major disassembly operations should be entrusted to an authorized Service Center where skilled personnel and suitable equipment, as well as genuine spares, are available. The Dealer is at your full disposal for any suggestions or advise you may need, should the machine develop possible operational troubles.

To ensure proper operation of your machine, it is essential that all worn or damaged parts be replaced with genuine spares.

In placing your order, please specify: - Frame type and number; - Engine type and number; - Catalog part number (s) of spare (s) required.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

3

IDENTIFICATION DATA

Machine manufactured by: CNH Italia S.p.A., Via Plava, 80 - 10135 TORINO, Italy in the LECCE Plant address: Telephone:

Zona Industriale Surbo 73100 LECCE (Italy) (832) 6881

Machine in conformity with the EEC directives on machinery safety (Directives 89/392. 91/368, 93/44 and 93/68) Series: 2550 Technical type: 535.115.255

2550-M002

Machine identification plate

Front towing hook.

Allowable pull: 200 KN Rear towing hook.

Max. allowable pull: 350 KN

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

4 SPECIFICATIONS ENGINE Engine "emissioned" Net flywheel power (ISO 9249, SAE J1349, EEC 80/1269): .......................... 177 kW/237HP/2200 rpm Gross power:.................... 179 kW/240HP/2200 rpm Make and model ................... CUMMINS 6CTAA8.3 Type ......turbocharged, aftercooled, direcly injection 4-cycle diesel Number of cylinders .............................................. 6 Bore x stroke .................................... 114 x 135 mm Displacement ................................................... 8,3 l Governed .................................................. 2200 rpm Maximum torque ............... 114.6 daNm at 1400 rpm Lubrication ..................... full pressure by gear pump

Aftercooler Material: .................................................. aluminium Radiating surface: ..................................... 29.8 dm2 Operating pressure: ......................................... 2 bar

Starting Electric motor.

The machine may be operated up to 2500 m altitude without derating the machine.

Engine complies with TIER 2 CE 97/68, and with U.S. standards CARB & EPA. Combined replaceable oil filter; the upper section includes the total flow filtering element, whereas the lower section contains the by-pass element.

Minimum permissible lube pressure.

- At low idle .................... 0.69 bar (69 KPa) (10 Psi) - At nominal rpm ........... 2.07 bar (207 KPa) (30 Psi) Oil sump capacity .................... 19 lit. (20 U.S. Qts.)

Lubrication Force-fed by gear type.

Strainer on pump suction, total flow oil filtration on delivery line by replaceable cartridge filter.

Oil cooled by water circulation type heat exchanger derived from the radiator.

Low engine oil pressure indicator located on CONTROL MODULE.

Cooling Water type, force-circulated by centrifugal pump.

Radiator: 6 tube row core.

Fan: 900 mm, seven blade pusher.

Fan speed: ............................................... 1328 rpm.

Coolant circulation between engine and radiator controlled by thermostat.

Engine coolant temperature and level indicators located on CONTROL MODULE.

TRANSMISSION Hydraulic torque converter with max stall torque ratio 3.28 : 1.

“Powershift” transmission providing three forward and three reverse speeds, with five hydraulically controlled clutches.

Pilot control gearshift located on left side of the operator.

Safety lock lever preventing in “lock” position the operation of the pilot gearshift, automatically engaging the service brakes.

Torque converter/transmission oil cooling by water type heat-exchanger recirculated from the engine radiator.

Transmission oil filtered by two total flow filters; one metal mesh and magnetic rod on suction line, the other cartridge type with by-pass valve on delivery line.

Reduction units Central bevel gear type reduction.

Reduction ratio: ......................................... 1 : 2.923 Double reduction final drives.

Reduction ratio: ........................................ 1 : 12.410

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

5

STEERING CLUTCHES AND BRAKES

EQUIPMENT HYDRAULIC SYSTEM

Multi-disc, oil-bath steering clutches actuated by two indipendent control levers (in the first part of the stroke, they disengage the steering clutches, than in the final part the brakes are applied, thus controlling the steering of the machine).

Hydraulic system pressurized by gear type pump. The oil is filtered by to full-flow filters: one metal mesh with magnetic rod on pump suction; the other, renewable, equipped with by-pass valve, in case of clogging, on the return line.

Service brakes: oil bath, total wrap band type, working on the outer face of the steering clutch drums.

Single, central pedal with hydraulic power control, to actuate the service brakes.

Parking brake: automatically applied by safety lever.

Hydraulic oil reservoir, equipped with level indicators, located in the back of the machine.

Gear type feeding pump.

Oil filtration by means of two total-flow filters: one metal mesh on pump suction line; one replaceable, with safety by-pass valve in case of clogging, on oil return line to reservoir.

Three-spool, control valve.

Single lever control for the first two spools of the control valve for: • raising/lowering/float of blade; • blade tilting.

Two double-acting hydraulic cylinders incorporating stroke-end and quick dropping valves in the upper sleeve, operate the blade.

An optional supplementary lever is available for the third spool.

A safety locking lever, retains the equipment control in neutral, to avoid accidental manoeuvres.

UNDERCARRIAGE Includes two welded box structure type track frames.

The track frames are connected, in the front, by an oscillating cross-bar and are hinged, in the rear, on the sprocket drive shafts.

Seven track rollers and two support rollers per side, permanently lubricated.

Sprockets with replaceable toothed sectors.

Idler wheels permanently lubricated, and hydraulic tension adjuster.

Quantity of shoes per track chain: ...................... 41 Width of standard shoes: .......................... 550 mm Track chains contact area: ...................... 32705 cm2 Width of standard shoes: .......................... 600 mm Shoe width: ............................................. 35675 cm2 Width of standard shoes: .......................... 700 mm Shoe width: ............................................. 41620 cm2

ELECTRICAL SYSTEM Voltage 24 Volt.

Alternator Alternator BOSH 28V 65A with incorporated electronic voltage regulator.

Starter motor Starter motor with automatic pinion engagement by solenoid.

Batteries Twin 12 Volt, series connected batteries.

Supplementary starting switch Switch for the starting of the engine “from the ground”, when the cab is tilted.

FRAME Load bearing with welded steel boxed structure on which the various groups are mounted.

Mounted frontally on the oscillating cross-bar and to the track frames and to the transmission housing in the rear.

Emergency electrical socket Electrical socket for the starting of the engine with donkey batteries or another machine, in case of electrical emergencies.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

6 CAB (optional)

RIPPER (optional)

Modular type, elastically suspended by elastic blocks, integrated in the safety structure.

The cab offers maximum comfort to the operator, in all weather conditions.

Parallelogram type with welded box steel elements frame. Three position tool bar with three semi-curved shanks with replaceable tips.

Controlled by two double stroke hydraulic cylinders.

Weight without tools: .................. 3400 kg (7495 lbs)

WEIGHT AND SPEEDS

ACCESSORY EQUIPMENT

The weight of the machine in working order, equipped with HSU blade, and operator: 27000 kg.

Some of the equipment items described and illustrated are supplied to certain markets to meet specific requirements.

Other special devices and attachments are also available as optional equipment. Check with the Sales Organization.

MAX. SPEEDS (forward - reverse) km/h : Speeds

I

II

III

- forward - reverse

3.7 (2.26) 4.4 (2.70)

6.1 (3.80) 7.2 (4.41)

10.9 (6.70) 12.6 (7.82)

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

7

460

2315

2296

3420

MAIN DIMENSIONS

550 2070

175

2973

2770

4465

2940

4490

1220

700 688

3650

5415 5855 ±5

530

1500 800

BULLDOZER HSU + RIPPER

°3

0'

4460

NOTE:

- TRACTOR IN OPERATING ARRANGEMENT - SHOE GROESER HEIGHT: 71,4 mm - Graphic includes opt. equipments

1300

5360 5800

±1

560

700

1100

ANGLEDOZER

0°

D255-2M092

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

8

STABILITY POSITION OF CENTER OF GRAVITY In transportation conditions.

Z

X X= Z=

1390 mm 810 mm

Note: the position of the center of gravity depends upon the position of the equipment.

D255-2M003

WARNING The machine, as delivered by the plant, is not intended for any other application and, in particular, should not be considered for use as a mean for hooking, lifting or moving suspended loads.

Any different usage, therefore, MUST BE AVOIDED, unless the machine has been equipped since manufactured by the Factory, with special equipment and particular instructions for specific applications.

QUANTITATIVE SIDES OF COMFORT NOISE LEVELS 2000/14/EC Level of guaranteed noise power Level of guaranteed noise power, determind in accordance with European Directive 2000/14/EC. Lwa = 112 dB (A) Noise in the operator's seat Evaluated on identical machines, in accordance with regulations EEC 95/27 and 86/662.

Lpa = 83 dB (A)

Level of vibration on hands and arms From researches performed on identical machines, in travel and dozing conditions, with different length cycles, it is found that the average level of vibrations is EQUAL OR LOWER than 2.2 m/s2 (Value rms weighted with “wide band” method and weighting in accordance with ISO 2631-1).

Level of vertical vibrations on operator’s seat From researches performed on identical machines, in travel and dozing conditions, with different length cycles, it is found that the average level of vibrations is EQUAL OR LOWER than 1.6 m/s2 (Value rms weighted with “wide band” method and weighting in accordance with ISO 7096 and ISO 2631-1).

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

9

LIST AND LOCATION OF SAFETY DECALS All the safety plates applied on the machine to provide maximum operational safety against unavoidable risks, are listed here below: They have been divided into two groups:

Group A - danger and warning decals Group B - general purpose and manoeuvre decals The exact location on the machine is found in the figure here below.

LIST OF DECALS

A

B

1A

FIELD OF OPERATION SAFETY DECAL

2A

TRACK TENSIONER SPRING DECAL

3A

TRACK TENSIONER SAFETY DECAL

4A

CAB TILTING SAFETY DECAL

5A

STEERING CLUTCHES SAFETY PLATE

6A

FLUIDS UNDER PRESSURE DECAL

7A

OPERATION SAFETY DECAL

8A

SAFETY WARNING DECAL

10A

SWITCH DECAL

11A

BATTERY SAFETY DECAL

12A

STARTING FLUID SAFETY PLATE

13A

BRAKES SAFETY DECAL

14A

MANOEUVRE SAFETY DECAL

15A

HOT ZONE WARNING DECAL

16A

FAN BELTS PLATE

17A

BATTERY WARNING PLATE

1B

MAINTENANCE DECAL

2B

FUEL DECAL

3B

EQUIPMENT OPERATION DECAL

4B

MACHINE LIFTING DECAL

5B

TRANSMISSION CONTROL PLATE

6B

THROTTLE CONTROL DECAL

7B

TRANSMISSION CONTROL LEVER WARNING PLATE

8B

RIPPER CONTROL DECAL

9B

MASTER SWITCH DECAL

10B

ATTACHMENT CONTROL LEVER WARNING PLATE

11B

CLUTCHES CONTROL PLATE

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

10

LIST OF SAFETY DECALS Group A - Danger and Warning decals 1A

DANGER

KEEP CLEAR D255-2M004

2A

DANGER TRACK RELEASE SPRING IS ASSEMBLED INTO MACHINE WITH HIGH COMPRESSIVE LOAD. FOLLOW PROCEDURES RECOMMENDED IN UNDERCARRIAGE SERVICE MANUAL WHEN ASSEMBLING OR DISASSEMBLING THIS PART.

D255-2M005

3A

DANGER FLUID UNDER PRESSURE DO NOT LOOSEN TRACK TENSION BY UNSCREWING OVERLOAD RELIFE VALVE DO NOT REMOVE THE LUBE FITTING LOCATED ON TOP OF THE BALL CHECK ASSEMBLY. FOLLOW PROCEDURES RECOMMENDED IN THE UNDERCARRIAGE SERVICE MANUAL.

D255-2M006 Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

11

4A

WARNING TO TILT THE CAB PROCEED AS FOLLOWS: — — — —

POSITION THE MACHINE ON LEVEL GROUND, SHUT THE DOORS. OPEN BOTH CAB PANELS. REMOVE THE CAB SUSPENSION RIGHT HAND MOUNT-TO-FRAME CAPSCREWS. FROM THE QUICK RELEASE RETAINERS DISCONNECT THE IMPLEMENT CONTROL VALVE AND LOCK LINKAGE AND HOLD WITH THE SPECIALLY PROVIDED ELASTIC BAND. — FROM THE QUICK RELEASE RETAINERS DISCONNECT THE THROTTLE CONTROL LINKAGE. — OPERATE THE CAB TILTING PUMP LEVER WITH DIVERTER VALVE IN POSITION. AND CONTROL THE DINAL PHASE OF THE CAB TILTING ACTING ON THE DIVERTER VALVE TO LOWER THE CAB PROCEED WITH CAUTION TO AVOID ANY DAMAGE TO THE PARTS UNDERNEATH, AND OPERATE AS FOLLOW: — ACTUTATE THE PUMP LEVER WITH DIVERTER VALVE IN POSITION. — CONTROL THE FINAL 300 mm OF THE CAB LOWREING ACTING ON THE DIVERTER VALVE. SEE THE OPERATION AND MAINTENANCE INSTRUCTION MANUAL. D255-2M007

5A

DANGER STEERING CLUTCH ASSEMBLIES HAVE HEAVY SPRING COMPRESSED INSIDE THEM. ALWAYS FOLLOW PROCEDURE RECOMMENDED IN SERVICE MANUAL WHEN ASSEMBLING OR DISASSEMBLING THESE CLUTCHES. D255-2M008

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

12

6A

DANGER FLUID UNDER PRESSURE TURN CAP OR COVER SLOWLY TO RELIEVE PRESSURE BEFORE REMOVING SEE OPERATION AND MAINTENANCE INSTRUCION MANUAL. D255-2M009

7A

DANGER DO NOT START, OPERATE, MAINTAIN, FUEL OR SERVICE THIS MACHINE WITHOUT FIRST READING THE OPERATION AND MAINTENANCE INSTRUCTION MANUAL. IF A MANUAL IS NOT AVAILABLE, CONTACT THE CNH ITALIA S.P.A. ORGANIZATION. IT IS YOUR RESPONSIBILITY TO BE SURE OF THE CORRECT USE AND OPERATION OF THE MACHINE. IMPROPER USE MAY CAUSE DAMAGE. INJURY OR DEATH. D255-2M010

8A

WARNING THE PROTECTION OFFERED BY THIS PROTECTIVE STRUCTURE MAY BE IMPAIRED IF IT HAS BEEN SUBJECT TO ANY MODIFICATION OR DAMAGE. D255-2M011

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

13

10A

WARNING ALWAYS TURN THE MASTER SWITCH TO THE OFF POSITION BEFORE CLEANING, REPAIRING OR SERVICING, AND AFTER PARKING MACHINE.

D255-2M012

11A

DANGER FLAMMABLE VAPORS EXTINGUISH ALL SMOKING MATERIALS OR OPEN FLAMES BEFORE CHECKING AND FILLING BATTERIES. DO NOT CHECK BATTERY BY SPARKING. D255-2M013

12A

WARNING STARTING FLUID IS FLAMMABLE FOLLOW THE RECOMMENDATIONS OUTLINED IN THE OPERATION AND MAINTENANCE INSTRUCTION MANUAL WHEN USING STARTING AID EQUIPMENT. D255-2M014

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

14

13A

WARNING BRAKES ARE INOPERATIVE WHEN MANUALLY RELEASED FOR SERVICING. PROVISION MUST BE MADE TO MAINTAIN CONTROL OF THE MACHINE BY BLOCKING OR OTHER MEANS. D255-2M015

14A

WARNING THIS MACHINE IS EQUIPPED WITH AN EMERGENCY SYSTEM WHICH APPLIES THE BRAKE WHEN THE ENGINE STOPS.

15A

THIS MACHINE IS EQUIPPED WITH POWER STEERING WHICH IS EFFECTIVE ONLY WHEN ENGINE IS RUNNING.

WARNING HOT

THE ATTACHMENT OR TOOLS CAN BE LOWERED IN RESPONSE TO ATTACHMENT. CONTROL LEVER MOVEMENT WITH OR WITHOUT ENGINE POWER.

AREA D255-2M025

USE OF SEAT BELTS ON ROLL OVER PROTECTIVE STRUCTURE EQUIPPED MACHINES IS RECOMMENDED. DO NOT CARRY RIDERS UNLESS THE MACHINE IS EQUIPPED FOR SAFELY CARRYING PEOPLE. FOR NOISE LEVELS ABOVE 90 DBA AND EXPOSURE FOR MORE THAN 8 HOURS. WEAR AUTHORIZED HEARING PROTECTION PER OSHA REQUIREMENT. ALWAYS CHECK WORK AREA FOR DANGEROUS FEATURES. THE FOLLOWING ARE EXAMPLES OF DANGEROUS WORK AREAS: SLOPES OVERHANGS, TIMBER, DEMOLITION, FIRE, HIGH WALLS, DROP OFFS, BACK FILLS, ROUGH TERRAIN, DITCHES, RIDGES, EXCAVATION. HEAVY TRAFFIC, CROWDED MAINTENANCE AND CLOSED AREAS. USE EXTREME CARE WHEN IN AREAS SUCH AS THESE.

16A

WARNING ROTATING BLADES AND BELTS WHEN ENGINE IS STARTING OR RUNNING. KEEP AWAY D255-2M026

KEEP AREAS AROUND ENGINE EXHAUST SYSTEM AND MANIFOLDS CLEAR OF COMBUSTIBLE MATERIAL. SHUT ENGINE DOWN BEFORE CLEANING.

D255-2M024

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

15

17A

Shield Eyes Explosive Gas Avoid Sparks and Flame Sulfuric Acid

DANGER EXPLOSIVE GASES Always shield eyes and face from battery, Cigarettes, flames or sparks could cause battery to explode. Do not charge or use booster cables or adjust post connections withoutproper instruction and traning.

POISON CAUSES SEVERE BURNS Contains sulfuric acid. Avoid contact with skin, eyes or clothing. In event of accident flush with water and call a physician immediately.

KEEP OUT OF REACH OF CHILDREN D255-2M016

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

16

LIST OF SAFETY DECALS Group B - General purpose and manouvre decals 1B GREASING

OIL FILLING POINT

MACHINE MAINTENANCE AND LUBRICATION INSTRUCTIONS

WARNING READ THE OPERATION AND MAINTENANCE MANUAL PRIOR ANY INTERVENTION MAINTENANCE INTERVAL HOUR

IDENTIFICATION OF MAINTENANCE

AS REQUIRED

TYPE

ENGINE: WATER FILTER ENGINE: OIL LEVEL ENGINE: OIL FILTER ENGINE:VALVE ENGINE: INJECTORS TEST TRANSMISSION: OIL LEVEL TRANSMISSION: DELIVERY OIL FILTER TRANSMISSION: SUCTION OIL FILTER HYDRAULIC SYSTEM: OIL LEVEL HYDRAULIC SYSTEM: RETURN OIL FILTER PROPELLER SHAFT: GREASE FITTINGS RADIATOR: COOLANT LEVEL GRASE FITTING FAN AND ALTERNATOR BELTS FUEL FEED PUMP FILTER AIR CLEANER FILTER PRIMARY AND SECONDARY FUEL FILTERS REAR TRANSMISSION: RETURN OIL FILTER REAR TRANSMISSION: OIL LEVEL REAR TRANSMSSION: SUCTION OIL FILTER FINAL DRIVE: OIL LEVEL INNER TRACK FRAME SUPPORTS RIPPER: GRASE FITTING FUEL-WATER SEPARATOR - DRAIN WATER BATTERIES: ELECTROLYTE LEVEL VENTILATION SYSTEM: FILTER CHECK

CHANGE

LUBRICATE

CLEAN

TYPE OF LUBRICANT AND SPECIFICATIONS TYPE

AMBIENT TEMPERATURE

FILL

AKCELA

INTERNATIONAL DESIGNATION

VISCOSITY

ENGINE AND REAR TRANSM.

AKCELA NO. 1 ENGINE OIL

API CH4 ACEAE5

15W - 40

FINAL DRIVES

AKCELA GEAR 135 HEP

API GL5 or MIL-L-2105

80W - 90

HYDRAULIC AKCELA HYDRAULIC EXCAVATOR SYSTEM FLUID-MS 1230 AKCELA TRANSMISSION HY-TRAN®ULTRA CASE GREASE MOLYDISULFIDE FITTING GREASE

ISO VG-46 DIN 51524 PART 2 HVI

GRADE NT

CNH MAT 3505 MS1209

10W

–

–

10W - 30

D255-2M062

2B

EL

FU

E L

D

S IE

D255-2M018 Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

17

3B

4B

D255-2M027

D255-2M028

6B

5B

D255-2M029

D255-2M030

7B

WARNING MOVE THE LEVER TO THE LOCKED POSITION BEFORE LEAVING THE OPERATOR'S COMPARTMENT

D255-2M019

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

18

8B 9B

D255-2M021 D255-2M020

10B

WARNING MOVE THE LEVER TO THE LOCKED POSITION BEFORE LEAVING THE OPERATOR'S COMPARTMENT

D255-2M022

11B

D255-2M023

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

19

POSITION OF DECALS * To apply only for cab variant

1A

3A

2A Inner hood cover

4B

14A 6A

*

1B 12A

4A

5A

15A

13A

8B

11A

10B

11B 9B

3B

8A

11B

2B 17A

9B 10A 3D

7B

7A

Battery detail D255-2M031

ON BOTH SIDES Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

20

POSITION OF DECALS

* 5B

* 3B

6B

D255-2M032

* TO APPLY ONLY FOR CAB VARIANT

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

21

PRELIMINARY INSTRUCTIONS AND BREAK-IN PERIOD PRELIMINARY INSTRUCTIONS

BREAK- IN PERIOD

Upon delivery of the machine, the Sales Organization Representative/s provide the Customer with the main instructions relative to the operation and maintenance of the machine.

These instructions are summarized in the list here below:

A minimun break-in period of 60 hours is required.

Proceed as follows:

-

decanting of fuel; check levels: coolant, fuel and oils; drain deposits from fuel reservoir; bleed air from fuel system; starting and stopping the engine and the machine; rules for a safe operation of the machin; running-in; operation of the machine and equipment. lubrication and lubricants; maintenance of air cleaner; maintenance of filters: fuel, engine oil and hydraulic fluid; - maintenance of engine cooling system (the system is filled at the Factory with a mixture of water and glycol type anti-freeze fluid); - maintenance of hydraulic systems: torque converter-transmission, steering, equipment; - check the tooling.

Start the engine. Check all instruments and indicators; actuate the controls of the machine to ensure that they operate correctly. Stop the engine and check sleeves, pipings and connections for leakages.

WARNING Never lubricate, service, or adjust with engine running except as called for in the Operation and Maintenance Instruction or Service Manuals to keep from being caught in moving parts or by a moving machine.

- before driving away after a cold starting, warmup engine at idle speed for a few minutes; - avoid prolonged full power operation; - inspect the machine frequently, making sure there are no oil or coolant leaks.

During the initial period of machine operation, in addition to the routine maintenance described in the relevant section, you are advised to carry out the following supplementary servicing operations that later may be omitted or protracted to loger intervals.

Within the first 100 hours: - change fuel filter; - change converter/transmission oil and associated filter; - change filter or return line of hydraulic system to the reservoir.

Within the first 300 hours: - check fuel system and engine valve clearance.

All the above recommendations apply also to newly overhauled machines.

WARNING Warn all people who may be servicing or working around machine before starting engine.

Do not run engine of this machine in closed areas without proper ventilation to remove deadly exhaust gases.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

22

OPERATING WARNINGS

WARNING Study the operation and maintenance instruction manual through before starting, operating, maintaining, fueling, or servicing this machine.

Keep people clear of attachments and tools while in raised position to prevent possible injury.

This symbol is safety alert sign. It MEANS ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED.

Never attempt to operate the machine or its tools from any position other than seated in the operator's seat. Keep head, body, limbs, hands and feet inside operator's compartment, to minimize the possibility of exposure to external dangers.

Read and heed all safety instructions carrying the signal words WARNING and DANGER.

Be sure exhaust system is free of leaks under the hood.

Operate machine only if in good health conditions; do not rush on machine; use grab rails and keep them clean at all times; keep operator’s compartment clean and clear of foreign objects; eventual tools and/or personal belongings not required on machine must be removed or firmly secured.

For darkness operation, keep all machine mounted lights in operating condition. Report burned out lights and replace immediately.

This machine and its attachments are to be operated only by a qualified operator seated in the operator’s seat.

Your safety and the safety of those around you depend upon the care and judgement in operating this machine and its equipment.

Understand the position of function of all controls and stability characteristics of the machine before starting to operate.

Before starting machine, check, adjust and lock the operator's seat for maximum comfort and control of the machine.

Before moving machine or attachments be sure exposed people in the area are clear of the machine. WALK COMPLETELY AROUND MACHINE before mounting. Sound horn.

Never leave the machine unattended with the engine running.

The attachment or tools can be lowered in response to attachment control lever movement with or without engine power.

Always before leaving the operator’s seat and after making certain all people are clear of the machine, slowly lower the attachments or tools flat to the ground in a positive ground support position.

Move any multipurpose tool to positive closed position. Return the controls to hold. Place engine controls to off position. Engage all control locks and lock the master (key) switch.

Do not park on downgrades without first immobilizing the machine safely to prevent accidental movements.

Always set parking brake when leaving the machine for any reason.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

23

CONTROLS AND INSTRUMENTS

1

12

2

13

1 3 4

5

6 7

14

8

15

9

16

10

17

11

1 L. 505

Note – The terms left and right used in the text of this Manual, refer to the operator seated in its seat and looking forward.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

24 1.

AIR INTAKE DUCTS (on cab only).

2. BLADE CONTROL LEVER The lever controls the raising, lowering and tipping of the blade.

To lift or lower the blade move the lever, respectively, back to position D or forward to position H. Holding the blade in any desired position may be done by releasing the lever which will automatically return to "neutral" N. To place blade in float position, i.e. lowering to ground only by its weight, move the lever forward to position F, where it will be held by a special detent. To release float position, move lever to "neutral" N. Moving the lever left to position A, or rigth, to position B, the blade tilts. The lever should be held until the blade reaches inclination desired.

5.

ANTI-VANDALISM DASHBOARD

6.

POWER SOCKET

7.

FUSE COVER

8. BRAKE PEDAL By pushing the pedal, braking of both tracks is controlled.

2

D255-2M063

F H

N

A

9. STEERING CLUTCH/BRAKE LEVERS At the end of the first part of lever travel the corresponding steering clutch is disengaged and the affected track is allowed to slow down.

By pulling further the lever, also the track brake, is applied and the machine steers in thighter space.

When going down steep slopes, the steering clutch manoevers must be reversed; for example, to turn right you need to disengage the left clutch, to allow the track to go faster than the right one, which is held back by the engine.

B

D L. 507

3. ENGINE THROTTLE LEVER Forward = idle speed.

Backward = max acceleration.

4. ENGINE DECELERATION PEDAL Used for temporary engine R. P. M. speed reduction.

D255-2M064

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

25 12. EQUIPMENT CONTROL LEVERS LOCK When lifted as illustrated, to position M the EQUIPMENT CONTROL LEVER is locket in neutral.

This is to avoid unintentional movements of levers 2 and 13. To unlock levers 2 and 13, push device 12 downward, to position S.

10. EDM ANTI-VANDALISM COVER

13

2

12 D255-2M099

11. GEARSHIFT LEVER When actuating the lever, three forward and three reverse speeds are selected (N = neutral position). In each position, the lever is held at full stroke by a detent. The speed shifting and the changing of direction may occur with machine standing or moving.

For the possibility of speed selection, refer to the illustration.

D255-2M063

13. RIPPER CONTROL LEVER (optional) - With lever forward P = lowering the ripper.

- With lever backward R = raising ripper.

- Lever in N = neutral.

11

3

2

M S

3

P

N

2 R L. 582 D255-2M065

14. ELECTRICAL SYSTEM MASTER SWITCH The position of the electrical system master switch equipped with ROPS is under the anti-vandalism cover (10) at the base of the left console. The key of the electrical system master switch must result in position B (see figure on following page), when the system must be operational.

Rotate switch key to position A (in the moving direction of the machine) when the unit must be parked upon completing the work shift and remove the key. In doing so, the abuse of the machine by unauthorized persons is made more difficult.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

26

a. Transmission hydraulic system low pressure indicator When lit the indicator signals an insufficient pressure that could be caused by: - clogged oil filters; - the use of oil with inappropriate viscosity related to the season temperature; - malfunction of the hydraulic system.

If required, perform the due checks and take the necessary countermeasures; if the malfunction remains, call the Service Organization.

D255-2M100

ROPS

CAB

15. CONTROLS FOR CAB INTERIOR HEATING AND VENTILATION (enclosed cab variant)

b. Engine lube oil low pressure indicator When lit, the indicator signals an insufficient pressure that could be caused by: - clogged oil filter; - the use of oil with inappropriate viscosity related to the season temperature; - malfunction of the hydraulic system.

If required, perform the due checks and take the necessary countermeasures; if the malfunction remains, call the Service Organization. c. Transmission oil low level indicator To obtain a correct indication of a transmission low level, the engine must have been stopped by at least 15 minutes. d. Engine oil low level indicator

D255-2M066

e. Engine coolant low level indicator The level of coolant in the radiator should reach the brim of the filler neck.

When outdoor temperature is near or below 0 °C (32 °F), check that the system is filled with an antifreeze mixture adequate to meet the lowest expected temperatures.

16. ELECTRONIC DATA MONITOR - E.D.M.

a PRESSURES TRANS ENG

b c d e

k FILTERS

LEVELS TRANS

AIR

ENG

HYD

WATER

h TEMPERATURES

f

LEVELS CHECK

WATER

g

m n

r

TRANS

i D255-2M067

f. Level check switch When pushing this button switch, the check of levels c, d, e is obtained.

LEVEL CHECKS - The checking of the levels: transmission oil c, engine oil d, coolant e, is performed with machine on a flat surface and engine OFF by a least 15 minutes, proceeding as follows: - turn the electrical system master switch ON; - turn the key of the engine starter switch to the first position;

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

27

- check that all indicators on the CONTROL MODULE are flashing (indicators test phase, lasting 6/8 sec.s); - during this period of time (6/8 sec.s) push button f.

During this phase, all levels are memorized; eventual low levels will be signalled on the CONTROL MODULE, at the end of the flashing test phase of the indicators. At the same time, an intermittent sound signal comes ON.

WARNING Eventual dropping of the levels occurring during the operation of the machine, are not instantly signalled on the CONTROL MODULE; they will be reported at the beginning of the subsequent work cycle, proceeding as described in “LEVEL CHECKS”. g. Battery charge indicator The glowing of this indicator while the engine is running, indicates a malfunction of the battery recharging system.

If the cause is not readily identified, check with specialized personne.

h. Engine coolant high temperature indicator When ON, the indicator signals an overheating of the coolant that may be caused by: - insufficient quantity of coolant in the system; - dirt or other particles clogging the outside of the radiator (clean when engine is cold with a jet of air or water); - scaling of the cooling system (flush as required); - slack fan belts (adjust tension); - faulty thermostat (have it check and replace if required); - overheating of the converter/transmission oil circulating in the heat-exchanger due to improper operation of the machine.

i. Transmission oil high temperature indicator When lit, it indicates excessive oil temperatures, which may be due to: - restricted oil suction filter; - prolonged use of machine under abnormal operating conditions; - faults in hydraulic system running; - lengthy operation of the machine in abnormal conditions; - abnormal operation of the hydraulic system.

The overheating of the oil must be avoided, since its characteristics may be altered, thus affecting the operation of the components.

Oil overheating should be avoided because it may alter the oil properties and jeopardize proper operation of system components.

Operation with oil at rather high temperatures can be tolerated only for short periods and provided that the engine coolant circulating in the heat exchanger does not reach excessive temperatures.

Should the excessively high oil temperature persist, shift into a lower gear.

If the oil temperature does not drop, it is absolutely necessary to stop the engine after a few minutes at idle; find the cause of the trouble and remedy accordingly, after having consulted an authorized Service Center.

WARNING In any case, remember that, in order to obtain the best performance by the torque converter, the selected gear should be adequated to the operation being performed. k. General fault indicator It warns the operator by a double signal (flashing light and buzzer) that a fault has occured as indicated by the tell-tale lights: c, d, e, h, i.

When the general fault indicator (k) flashes: - stop the machine and turn off the engine; - turn off master switch; - take necessary actions to eliminate the fault. If the fault persists contact an authorized Service Center. m. Clogged air cleaner indicator When constantly lit, it indicates the obstructions of the air filter cartridges, which need to be cleaned or changed. n. Hydraulic system filter clogging indicator When lit, indicates the clogging of oil filter which must be replaced. r. Fuel level indicator When tank is full, the indicating bar is all lit green.

When reserve condition begins, the last green LED changes to red.

Although the red reserve LED is on, the red general fault indicator k and associated buzzer are not activated.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

28 17. GEARSHIFT AND EMERGENCY BRAKE LOCK LEVER This device has two positions: - Pos. A: when machine is stopped and engine is running the GEARSHIFT CONTROL LEVER 11 cannot be moved and the emergency brake is automatically inserted.

- Pos. B: gearshifting and machine movements are possible by actuating lever 11.

17

B

11

A

D255-2M068

INSTRUMENT PANEL

1

9

2

10

3

11

4

12

5

13

7

14 15

8

6 D255-2M095

1. TACHOMETER It measures the rpm of the engine.

3.

SWITCH FOR FRONT LIGHTS ON ROPS (or cab)

2.

4.

LIGHTS SWITCH

SWITCH FOR REAR LIGHTS ON ROPS (or cab)

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

29

5.

NOT USED

11. FRONT/REAR WINDSHIELD WASHER SWITCH (on cab version only)

6.

BRAKE SYSTEM MALFUNCTION INDICATOR 12. FRONT/REAR WIPER SWITCH (on cab version only)

7. TEST BUTTON SWITCH When pushing this button switch, the correct operation of the brakes malfunction indicator circuit is performed. The glowing of indicator 6, in fact, signals that the system is operating correctly.

8. ENGINE STARTING SWITCH To operate the start switch, turn the key to: - position 0: key may be removed; - position 1: electrical system is energized, without starting the engine; - position 2: push in and turn the key clockwise to start engine (when released, key snaps back to positions 1).

P

0

13. SIDE WINDOWS WASHERS (on cab version only) 14. SIDE WINDOWS WIPERS (on cab version only) 15. HORN

1 2

P L. 032

When switch is turned to position 1, check that the signals on CONTROL MODULE 6 are flashing (test phase lasting 6/8 seconds).

9.

DASHBOARD LIGHT

10. ELECTRONIC HOURMETER It measures the hors of operation and their fractions.

The hourmeter is operating automatically when the engine is running.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

30

OPERATING INSTRUCTIONS GENERAL NOTES Before starting the engine or moving the machine, make sure that is has been prepared for use and that the suggested maintenance operations have been performed during the period of inactivity after its last use. Consult the capter "PRELIMINARY INSTRUCTIONS AND BREAK-IN PERIOD" for any necessary details.

If repairs have been made since last use, make sure that all nuts and screws have been tightened and adjustments made.

Turn the ENGINE STARTING SWITCH key to the first position (8, page 29). Check that all indicators on the CONTROL MODULE flash (indicator testing phase, lasting 6/8 sec.s). To check, during this interval, eventual low levels of the fluids, proceed as described in "CONTROL MODULE".

WARNING The ELECTRONIC DATA MONITOR correctly registers fluid levels only if the machine is on a flat surface and the engine is off since at least 15 minutes.

When the engine is cold, move the accelerator lever half-way; if engine is heated up, move the lever a third of the way down.

STARTING THE ENGINE

WARNING Before starting the engine warn people servicing or working around the machine.

Do not run the engine in closed areas without proper ventilation to remove deadly exhaust gases. Observe all start up procedures and WARNINGS listed in the Operation and Maintenance Instructions Manual.

Turn on the MASTER SWITCH (14, page 25).

Check that the gear shift safety lock lever is in "locked" position.

Make certain the BLADE CONTROL LEVER is in neutral and is locked.

PUSH and TURN the ENGINE STARTING SWITCH KEY to starting position 2 (refer to fig. of page 29).

Once the engine is running, release the key.

WARNING If the engine has been inactive for a long period or if outdoor temperature is low, increase the feul circulation by stroking the priming pump a few times.

Note – Should the engine do not start after the “indicator test” phase, the following indicators (refer to CONTROL MODULE): c, d, e, h, i, general indicator K will flash and an intermittent sound signal comes ON.

WARNING WARNING This machine is equipped with an engine starting electric stop and protection timer.

Keep in mind that should the engine fail to start and the key is returned to position "0", it will be necessary to wait a few seconds (about 22) prior to a new starting manoeuvre.

On the contrary, when letting the key returning automatically from position "II" to position "I", it is possible to repeat the starting without pauses.

Don't keep on the starter for more than 20/30 seconds. Should engine fail to start, do not insist with pointless attempts, as completely dead batteries may be the only result.

Wait two or three minutes before trying a new start, so that the starter motor can cool down.

Note – The most frequent causes of starting failures are: air in the feul system, low battery charge, faulty operation of starter motor or faults in the electrical system.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

31

It is extremely important that after the engine is started it runs at idle speed for a few minutes to allow the oil to warm-up and get to all vital components. This rule must be carefully followed, especially in cold climates.

IMPORTANT WARNING Under the back right side panel of the cab there is a switch for starting engine from the ground.

This switch is to be used only by specialized personnel from the Technical Service Center for certain checks when cab is tipped.

The switch must never be used by the operator to start the engine.

WORKING OF THE ENGINE AT MINIMUM SPEED Idling the engine for a long time causes the coolant fluid to drop below the minimun regular temperature.

There is no need to leave engine idling for long.

Turn the engine off if a long period of idling is expected.

Anyway, if the engine must be kept running, it must work at a speed high enough to keep the oil pressure normal.

STARTING MACHINE

WARNING Before starting machine, check, adjust and lock the operator's seat for maximun confort and best machine control.

Before moving machine or tools, be sure that the personnel in the area is clear of the unit. Walk completely around machine before getting on.

Sound horn.

D255-2M069

P

0

Lift attachment clear of ground.

Unlock GEARSHIFT CONTROL SAFETY LEVER. Put GEARSHIFT LEVER in desired speed and direction.

Position the THROTTLE to reach the desired speed.

The good operation of the machine depends on the operator's ability to select the best transmission speed for the situation.

Note – In cold weather, before actually starting any work follow rules below: - drive the machine a while under no load, to warm up the oil in the converter/transmission system; - during the first few minutes on the job, do not use attachment, while engine is running at high speed.

1 2

L. 032

Switch for starting engine from the ground.

The key can be removed in positions P and 0.

The starting of the engine with ignition key from the driver's seat (8, pag. 29) can only be done when the ground starting switch is in position P. Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

32 STOPPING THE MACHINE

When the engine is idling, turn the IGNITION KEY to position 0, and remove key.

Before leaving machine unattended set MASTER SWITCH to OFF and remove key.

WARNING Do not park on downgrades unless machine is "locked" accurately to prevent any movement.

Whenever the machine is stopped check to see that all of the controls are in neutral and the implements safety levers are locked.

WARNING At the end of any work shift it is good practice to leave the engine idling for a couple of minutes.

Avoid accelerating in the stopping phase, because you risk turbocharger shaft turning even after the engine is stopped (due to inertia), without lubrication, which could cause damage.

WARNING Before getting down from the operator's seat and after making certain that all people are clear of machine, slowly lower the attachment to the ground is a positive support position. Move all auxiliary tools to safety position. Retur all controls to hold and lock them.

Turn off engine starter.

Consult "Operation and Maintenance Instruction Manual" for details.

WARNING If the outdoor temperature is below 0 °C and the cooling system is not provided with antifreeze, drain water.

Slow-down the engine.

Move the GEARSHIFT LEVER to neutral and engage the GEARSHIFT SAFETY LOCK AND PARKING BRAKE. Lower the equipment to the ground (refer to page 35).

Actuate the EQUIPMENT CONTROL LEVER SAFETY LOCK.

STOPPING THE ENGINE

WARNING Observe all start up and shut down procedures and WARNINGS listed in the "Operation and Maintenance Instruction Manual".

The attachments can be lowered by attachment control lever, with or without engine running.

Never leave machine unattended with engine running.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

33

OPERATOR'S SEAT ADJUSTMENT

FUEL TANK

The seat is provided with the necessary devices which allow adjustments of cushion inclination and height, back inclination and distance from controls.

WARNING Before starting the machine, check, adjust and lock the operator's seat in the most comfortable position.

Check the seat belt periodically. There should be no signs of fraying, wearing or weakening which could lead to breakage.

WARNING Extinguish all smoking materials and open flames before checking and filling tank. Do not refuel tank while engine is running. Do not use matches, lighters or torches as a light source on the machine due to the presence of inflammable fluids.

For refueling, use decanted fuel; to transfer fuel from settling vessel to machine tank, use a pump with a mesh strainer.

It is recommended to fill up fuel tank at the end of each day's work to prevent condensation during the night.

Don't let the tank run dry, as this would allow air to enter into the fuel system, with the consequent need for a bleeding operation.

a e b c

d L. 512

D255-2M033

a - Lever for the pre-setting of the operator’s weight related to the shock absorber. b - Lever for the adjustment of the seat distance to the controls. c - Height adjustment of front and rear of cushion. d - Seat back adjustment lever.

Setting of operator’s weight Seat on the seat and position the plastic indicator e on the edge of the sat side frame actuating lever a.

At this point, the seat shock absorber is set in accordance with the weight of the operator.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

34 BLADE ADJUSTMENT

CAB TILTING

Angledozer The moldboard tilt and the cutting edge pitch can be adjusted by the hydraulic cylinder connect to the right push beam.

In the angledozer version with hydraulic control cylinder, to change the tilt, screw or unscrew sleeve L by means of lever M. In this manner, also the cutting angle of the cutting edge is changed.

The cab may be tilted on its left side to allow easy access to machine mechanical components for servicing.

To tilt the cab using hydraulic cylinder C (see following page) and the hand pump mounted on the machine, proceed as follows: - place the machine on a flat surface; - open the rear side doors; - from the engine compartment (right side) disconnect the quick release joint for engine throttle lever; - through the right door, disconnect the quick joints of the four rods l - m - n -p: the two linkages of the blade control - one for the ripper control (optional) - one for the equipment control lever safety lock and secure them with the elastic band located in the vicinities; - loosen the screws securing the cab supports D at the base of the machine frame (three screws each side);

M

L

N A P Bulldozer The blade tilt and the cutting edge pitch are controlled by means of a hydraulic cylinder which connects the blade to the right push beam.

To obtain a greater tilt, or adjust the cutting edge pitch, lengthen or shorten the sleeve E, turning bar T.

T

D

D

C

B

D255-2M070

- turn diverter valve B to position “lift” ; - actuate the hand pump through lever A located in hole C and tilt the cab very slowly; Note – After the cab's gravity center has passed the dead center, it is not longer necessary to work the pump by lever A, since the cab will tip naturally until it reaches the point determined by safety rope F (see following page).

Check the last phase of tipping by turning cock B from upwards position to downward (arrows upwards and downwards) .

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

35

To lower the cab, proceed as follows: - turn cock B to "lowering" position (arrow downwards) ; - work the hand pump by lever A and continually check to see that there is no interference with the parts underneath, such as wires, pipes, hoses, etc.

INSTRUCTIONS FOR LOWERING THE EQUIPMENT TO THE GROUND WITH ENGINE INOPERATIVE

WARNING Observe all procedures and WARNINGS relative to the points STOPPING THE MACHINE and STOPPING THE ENGINE listed in this Operation Manual.

The equipment can be lowered in response to adequate movements of the control levers with or without engine power.

Move the specific control lever smoothly FORWARD (the blade or ripper lever) causing the lowering of the equipment involved.

Control the dropping speed, with particular attention in the last lowering travel before touching the ground.

When the blade is securely resting on the ground, move alternatively the lever FORWARD-BACKWARD full stroke, a couple of times.

With this manoeuvre the equipment is firmly resting on the ground and residual pressures in the hydraulic system are discharged.

Note – The last portion of cab lowering travel occurs by gravity, and must be controlled by turning cock B from downward position to "lift" (arrows upwards) .

Reconnect linkages l - m - n - p and the engine throttle lever by the relevant quick coupling joints.

Tighten screws D to a torque of 510-550 Nm. OIL FILLING AND AIR BLEEDING IN CAB TILTING SYSTEM. Proceed as follows: - make sure that cylinder C rods are completely retracted; - remove plug T from pump and fill with suggested oil; - lift slowly and lower the cab two or three times to bleed air from the system; - restore oil level through plug T, with cylinder C completely retracted; - close plug T.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

36 MOVING THE MACHINE WITH EXTERNAL HELP MACHINE TRANSPORT When transporting the machine with blade removed, fasten the cylinders using the pins provided as shown in illustration.

Transport Before leaving: - apply and bolt the wooden chocks to platform at track frame ends and safety bars or chains laterally for safe anchorage and immobilization during transport; - make sure that cab doors and other movable parts are correctly shut and secured; - if the machine size exceeds legally established limits, apply the necessary signals as per code requirements.

Unloading The operations and precautions are the same as those followed when loading, except that in this case the blade must lightly touch the ground to prevent machine from slipping.

D255-2M071

Loading Before loading the machine make sure that ramps and carrier trailer platform are lined with suitable non-skid material (wood, rubber, etc.) so that they are well fixed (avoid use of loose wood planks, tire covers ect.).

Proceed as follows: - apply tractor and trailer brakes; - lower rear trailer stabilizers onto ground; - align the machine tracks properly with the ramps, for correct climbing; - use a signaller who can easily see the ramp, loading platform, operator and machine; - lift tools just enough off of grounds, to not interfere with the loading operation; - climb up very slowly, with blade close to trailer platform; - avoid directional change while machine is on ramps; - position the machine on platform, so as to ensure optimum load distribution: any shifting of machine should be done smoothly, avoiding sudden starts and stops; - lower the tool, apply emergency brake, follow all rules for stopping and leaving machine.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

37

TOWING OR RECOVERING THE MACHINE. If the engine does not start and the machine must be towed, it is necessary to disengage manually the brakes proceeding as follows:

Cables and chains must be secured safely: ensure that the attachment point is strong enough for the effort required, that, in any case, must not exceed the maximum value approved for the towing hook being used.

WARNING The brakes are inoperative when they have been manually disconnected. Consequently, it will be necessary to take appropriate precautions to hold the machine. to reach the brake cylinders, remove the punched plate rear panels located under the fuel reservoir.

- Screw in, using a square socket, the brake adjusting screw as indicated B. - Repeat the operation on the other brake cylinder.

L. 518

WARNING Before returning the machine to operation, reposition the adjusting screw to its initial conditions.

The maximum allowable load on the front towing hook is 200 kN. The maximum allowable load on the rear towing hook is The maximum allowable load on the rear towing hook is 350 kN.

COLD WEATHER PRECAUTIONS

A. Brake band wear sensor.

B. Brake adjustment screw.

When towing, use equipment and vehicles of adequate capacity.

When using cables or chains, for towing or recovery, ensure that all components are in good conditions and that there are no defects or flaws.

Avoid twisting or kinking chains or cables and do not start pulling prior to the elimination of these troubles, since failures and a backlash can occur.

When outdoor temperature is near 0°C, it is necessary, to avoid the danger of freezing, to make sure that the cooling system is filled with a good anti-freeze mixture; if needed, remove water and put in antifreeze. Before adding it, flush the cooling system with a specific product, following the instructions on container.

WARNING Remove radiator cap only when engine is cool; with engine off, slowly unscrew the cap to allow pressure to escape before completely removing the cap.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

38 The use of CASE coolant is recommended. Please find in the table below the percentages of the mixture related to ambient temperatures: OUTDOOR TEMPERATURE Down to - 8 °C (18° F) - 15 °C (5° F) - 25 °C (-13° F) - 35 °C (-31° F)

ANTIFREEZE

20 % 30 % 40 % 50 %

WATER

80 % 70 % 60 % 50 %

Once filling is completed, let engine run for a short period, to ensure a correct mixing.

WARNING Do not run engine in closed areas without proper ventilation to remove deadly exhaust fumes.

When outdoor temperature lowers, use lubrificants with adequate viscosity, as recommended in the FLUID CAPACITIES.

MACHINE STORAGE If the machine is to be inactive for a long period follow these rules: - clean the machine completely and lubricate all parts provided with grease fittings; - drain engine cooling water; if radiator is filled with antifreeze mixture, drainage is not necessary; - fill fuel tank to prevent rusting; - remove injectors and inject some engine oil through the seats in the cylinder head, after having brought each piston to B.D.C; - crank the engine a few times with the starter, in order to spread a fine coat of oil on the cylinder walls.

Install injectors.

If possible, take out the batteries and store them in a place where there is no danger of freezing.

Recharge once a month.

WARNING Choose a slow recharge for batteries.

Take care to connect the cables to the proper terminal (+ with +) and (- with -) at both ends.

Avoid short circuiting cables clamps.

Store the machine in a protected area or otherwise cover it with a tarpaulin.

To ensure adequate protection of transmission units, the machine should be moved for a short distance at least once a month, in order to renew the oil film on components.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

39

OPERATOR'S COMPARTMENT PROTECTION STRUCTURE R.O.P.S. Enter and exit the operator's compartment using the appropriate grab handles and stepping points.

Instrument panel anti-vandal cover.

WARNING Do not modify the ROPS structure by welding or drilling components, to avoid affecting the strength specifications.

Power socket (on ROPS).

D255-2M099

Anti-vandal cover for E.D.M. panel.

Remove cover by releasing from its support using the key provided, then lock on E.D.M.

D255-2M101

Electrical system master switch (on ROPS).

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

40

SAFETY CAB (optional) All enclosing cab with incorporated Roll Over Protective Structure is amply glazed and provides maximun operator comfort under whatever climatic condition. Doors can be locked in open position.

DOOR The door is opened by the handle indicated in the illustration after opening its lock with the appropriate key.

WARNING The protection offered by the ROPS may be prejudiced by any damage or structural change.

Inspect your seat belt periodically for signs of frying, wear or other weakness leading to failure.

Enter and exit the operator's compartment using the appropriate grab handles and stepping points.

D255-2M096

To open from inside, rotate the handle as indicated.

D255-2M072 D255-2M102

Note – The key provided with the machine is universal, i.e. it operates the cab door locks and the engine starting switch.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

41

BACK WINDOW PANE Open back window by handle A. To hold it open, turn lever B.

During machine operation to keep door open, hook part A in B. To unhook the door, pull handle C. Note – To adjust doorstop on stopper D proceed as follows: - screw or unscrew stopper D to obtain the doorstop in detent position; - unscrew stopper D to turns and lock the relevant screw.

WARNING If glass needs replaced, use safety glass.

Do not hit glass to remove it, because it could break and cut someone.

Note – Lubricate door hinges by greasing the indicated grease boxes.

Note – The windows must always be kept clean to ensure good visibility.

It is recommended to use appropriate detergents for cleaning, taking care that only clean cloths to avoid scratching and impair transparency.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

42 CAB DOME LIGHTING The lamp unit is located on the ceiling.

Light L is turned ON by switch M. Directional light P is turned ON by switch N. Press M and N on opposite side to switch OFF the lights.

C

B A D255-2M073

M

L

N

P

D

D255-2M097

D CAB HEATING AND VENTILATION (optional) By turning switch knob B in the arrow direction, the fan is started and its speed is regulated.

Lever C adjusts the temperature of the air entering the cab, controlling the circulation of the engine coolant.

With lever C set in the Blue Zone, the air flowing from outlets D, is cold. With lever C in the Red Zone the air is warm.

Note – Max. air temperature is obtained with lever C at travel end (Red Zone) and switch B at max speed.

Demisting and defrosting For fast action on windshield and side or back windows proceed as follows: - set fan to top speed by switch B; - move control C to the maximun heat position (Red Zone); - suitably adjust directional air outlets D in cab.

D255-2M074

AIR CONDITIONER (optional) Air conditioner is turned ON by switch A. To adjust the cooling or heating inside the cab set lever C as specified for the units without air conditioner.

Note – The air conditioner is inoperative when the engine is stopped since it is driven by the engine.

Make sure the air conditioner switch A is OFF before starting the engine.

Always switch OFF the air conditioner before stopping the engine.

Keep doors and windows closed to obtain a correct air conditioning in the cab.

It is recommended to avoid attempting repairs on the air conditioning system by unskilled personnel.

Contact your Dealer when servicing is needed.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

43

WIPER Should visibility be unsatisfactory as a result of faulty wiper blade operation, clean rubber blades using a specific detergent or alcohol. Should faulty operation persist after cleaning, change the blades.

For this purpose, proceed as follows: - tilt the arm assembly C lifting it from the windshield; - loosen screws D and pull-out the blade.

L. 037

Open the right rear side panel to check the level and refill reservoir with windshield solvent.

C

D 8418

D255-2M075

If spray pattern is defective, clean nozzle orifices with a needle.

If necessary, re-adjust spray nozzle orientation so that the fluid will strike the windshield at top of the wiper sweep arc.

Important – When the ambient temperature decreases to 0 °C (32 °F) and below, always use an antifreeze type washer solution.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

44 ACCESSORY EQUIPMENT Blind To unroll blind, pull on central (D) grab. Press lever (B) shown for automatic roll-up.

B

D

The radio set shall be fitted in the housing provided for this purpose - remove tray V after releasing its spring retainers to uncover the radio recess.

The loudspeaker cables and screened antenna cables are found in this location.

D255-2M076

Ash Tray

V D255-2M098

For antenna installation, take off plug C and fit in its place threaded base of the antenna.

D255-2M077

Provisions for radio set The use of a 24V radio set is facilitated by the provision of all wirings needed by the loudspeakers and antenna.

Loudspeakers must be fitted in the locations shown, after cutting interior trim as illustrated - detail a. Seat opening diameter shall be 115 mm to accomodate the factory-supplied speakers or other than specified for customized speakers.

Loudspeaker cables are already provided under trim in these locations.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

45

FIRE PROTECTION

EMERGENCY LIGHTING FOR REPAIRS MAINTENANCE

LOCATION AND SECURING OF FIRE EXTINGUISHER

POWER SOCKET/CIGARETTE LIGHTER

The fire extinguisher is located on the right rear post inside the cab.

The fire extinguisher used is a 5 Kg powder type.

The socket of the cigarette lighter can be used as a 24 Volt DC power socket.

In particular, in case of darkness, it can be used to energize portable lights to facilitate field repairs or maintenance operations.

L. 531

Arrangement on ROPS.

WARNING Ventilate the area after using in closed ambient.

To operate the fire extinguisher, in case of emergency: - remove the fire extinguisher from its support grabbing it form the handle on the top side of the bottle; - pull the safety pin; - push completely the lever directing the jet to the base of the flames.

Note – Recharge also after a partial use.

D255-2M078

Note – The fire extinguisher is not provided, normally, by the Manufacturer, being an optional.

Arrangement on cab with windows.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

46

MACHINE OPERATION WARNING Never attempt to use machine or attachment except when seated in the operator's seat. Keep head, body, limbs, hands and feet inside operator's compartment to reduce exposure to hazards outside the operator's compartment.

Keep attachments low or in a position for maximum visibility and control of machine.

Never use the implements as a man lift.

Do not start suddenly at full speed against a tow chain or cable. Take up slack carefully.

Only designated towing or pulling attachment points are to be used for towing or pulling. Use care in making attachment. Be sure pins and locks, as provided, are secure before pulling.

Keep all people clear of attachments and tools while in raised position, to prevent possible injury.

Do not coast the machine at any time with transmission in neutral.

Always check work area for dangerous features.

The following are examples of dangerous work areas: slopes, overhangs, timber, demolitions, fire, high walls dropoffs, back fills, rough terrain, ditches, ridges, excavations, heavy traffic, crowded parking, maintenance and closed areas.

Use extreme care when in areas such as these.

Work on sloping ground is dangerous.

Be particularly careful when working near overhanging banks or where cave - ins may occur.

Use a signal person when visibility of the work area by the Operator is inadequate. The signal person must be in direct communication with the operator who must pay close attention to the signals.

Be on the lokout for caving edges, slides or falling objects. Beware of concealment by brush and undergrowth or other obstacles of these dangerous conditions.

When working in or nearby wells, trenches or in proximity of high banks, shore or brace as required to prevent cave-ins.

Before working in the vicinity of gas lines or other utility lines always contact the nearest utility office before beginning work.

You and the utulity representative must jointly determine what specific precautions must be taken to insure safety.

Work in proximity of overhead or underground power lines involves serious body injuries and death hazards, thus special precautions must be taken according to national and local safety regulations.

For the purposes of this Manual you are considered to be working in the proximity of power lines when the attachment or the load raised by machine, in any position, can reach to within the minimum distances specified by local and national safety regulations.

Slow down the operating cycle. Reaction time may be too slow and distances may be misjudged.

PRACTICAL RECOMMENDATIONS FOR THE OPERATION Generally when the operator first gets on the machine he must practice rainsing and lowering the implements.

This will enable the operator to get the feel of the controls and learn how they respond to the control lever positions.

Keep in mind that when the levers are in hold position the implements become a rigid unit with the machine: in other words, the implements will follow any up and down or sideway movement of the machine.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

47

A

B Moldboard pitch A. Soft terrain.

B. Hard terrain.

243

Dozing When working on grades, it is best to move downhill for better traction. Gradually lower the blade at the beginning of each pass and accelerate the engine fully.

The dozing depth should be such as to allow a load within a short distance (15-18 feet), the full load should then be pushed to the unloading area.

When the ground is hard and getting a full load in a short distance is not possible, push the half-load for a short distance, stop and go back to doze for more. The next pass will add to the first and will result in more effective dozing. This approach may be applied when the unloading area is not near the initial dozing.

When working in rough terrain, it is possible to catch large rocks under the blade and cause it to be lifted thus making uneven cuts. This humped effect can be avoided by backing up and then coming back with the blade at a lower depth and dislodge the rock. If necessary, operate with the moldboard at a tilt.

When dozing in hard terrain and the blade is unable to cut the material, it is advisalbe to increase moldboard's draft.

This angle is good for the initial cutting, but during continued dozing the moldboard will pick up more resistance as the load will not roll as well. In hard and rough terrains, dozing migth be easier if the blade is tilted; if the work to be done is over a considerable area, use the ripper to break up the terrain.

Road and ditch cutting When having to cut steep slopes (for roads or ditches) the dozing should begin by cutting the depth of the ditch and then tilting the blade to cut the sides.

Care must be taken when dozing not to cut slopes first as any correction would be most difficult, or in some case, even impossible.

Pushing loads When possible follow the same path on successive trips so material spilling from end of the blade will form a windrow on both sides. This practice increase the amount of material that stays ahead of the blade.

When pushing loads on a level terrain, keep the blade just off the ground or at a depth deep enough to skim the surface. If the terrain is uneven, a slight cutting of the ground will replace the dirt which will fall out to the sides or in hollows.

Pushing loads on turns

254

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

48 Steering Dozer have difficulties turning while pushing heavy loads. Turning the dozer with a load is done by reducing the required power on the dozer by leaving part of the load when turning and retrievig it on the next pass; take the turn in two or more straight lines. Pile the load at the turning angles so that it can be pushed along its next line.

Spreading Hold the blade sligthly above ground when spreading the load as this method permits an even layer. If the layer to be spread is of a considerable height, let the blade rest at a height just above the desired layer. This method permits more material than required to be spread which will be compressed in time, especially if the material is loose.

Levelling After the ground has been dozed, the surface might be rough caused by extraction of large rocks and track runs. These terrain irregularities must be smoothed over by operating the dozer in reverse and leaving the blade in float allowing it to drag the top surface and finish the operation. In this manner the blade is able to top off the high spots and fill the extra dirt into the low area. Levelling is a difficult task and at first seemingly impossible because of the large boulders which have to be removed.

Moving large rocks and boulders When a boulder is obstructing the working are and must be removed, this job may be carried out in several ways.

A fully loaded blade may be used to directly push the boulder or maneuver it by forward or reserve tractor action. The choice of procedures used depends on various factors; the boulder's size, shape, available space for maneuvering and type of work to be performed.

With the tractor in forward and fully loaded, the boulder can be moved by glancing it off the load. In this manner the rock will roll off to one side of the tractor.

Repeating this type of maneuver will eventually edge the boulder from the working area.

The same results can be had by maneuvering in reverse.

Turn the tractor so the side of the blade will come into contact with the boulder. The operator must disengage the steering clutch on the tractor's opposite side and lock that side's brake; the dozer will steer pulling the rock backward and laterally with the moldboard's side.

Pulling To carry out piling procedures, two well-accepted methods are recommended: - form a pile of material on the first pass, then with successive passes push material onto the established pile; - after forming the pile on the first pass, push material on successive passes to the top of established pile and allow material to fall over opposite side.

Moving boulders with full blade.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

250

2550

49

Moving boulders with side of blade.

When dozing over the edge to fill a ravine, doze up a single load, then push it over the edge with the second load. It is possible to raise the blade as the load nears the edge, this allows a safety border to be made and prevent the weight of the front end from coming into the ditch's cliff or wall.

Pile levelling If the pile's composition is not too bulky or hard, the pile can be levelled by dozing the blade into it.

If the pile is too big or too hard to be smoothed over in one pass, or if it is to be spread in more than one direction, the first pass may be made on the side in

order to cut part of the pile to grade and then make repeated cuts from different angles. If the dozing leaves high sides which could fall on the dozer, turn the blade toward wall and with it raised, push the mound back.

If the dozer is unable to cut a pile because of its steep sides, a ramp can be built by pushing into the side with the blade raised and then backblading with down pressure.

When working on an excessively high pile and ramping is not possible, the most advisable method is to doze a center slot and continually cut away the top. This system is the only one possible when there is no access to pile sides.

Levelling by means of lateral cuts

Levelling A

249

B

251

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

253

2550

50

Making a ramp

The center slot width must be greater than the blade's thus allowing a protective border to be built preventing the dozer from tipping over. Also, a narrow cut does not allow the tractor to properly maneuver and dispose of rock or roots encountered while dozing.

Going over obstacles Any obstacle (trunks, logs, ridges, etc.) encountered while dozing should be removed or avoided. When the dozer must travel over an obstacle, it should be done slowly and at an angle so that one track will reach the top and start to descend on the other side while the other track is still climbing. This method of operation permits tractor to come over the obstacle more smoothly. Hard contact with the ground can be harmful to the operator and machine.

Center slot dozing high pile

247

248

If the obstacle is made up of soft material, it is a good practice to sharply turn the tractor while crossing so that the track edges will help cut the material down.

When the dozer is operating at its capacity, the tracks often spin, then grip and then spin again.

This action with the grousers acting as cutters, causes dirt to build up behind the machine. Should this occur, it will be necessary to back up and smooth over the loose material.

A ditch may be crossed without danger only if its width is not greater than 1/3 the track length and if the track movement will not collapse the banks. To prevent the latter from occuring, move the tractor over wooden planks.

Hill work Dozers working on side slopes can tip over if particular care is not used.

Even when the dozer appears to have sufficient margin of safety, the sudden running over an unseen obstacle, a lower track moving into a hollow or both, can cause the tractor to tip over.

Chances of this occuring are greatly lessened when the tractor is dozing as it is moving along using the load as an added stabilizer. The tractor is also stabilized by the dozing windrows.

Dozing on frozen slopes is hazardous as the grousers act as skates causing the tractor to slide uncontrollably downhill. There is a danger of tipping over rocky slopes, especially shale, with beds parallel to the surface and on soft fills where the lower track sinks deeper than the upper one.

If the machine starts to slowly roll over, try to quickly turn it downhill and lower the blade.

A slope which is too steep to be safety worked sideways may sometimes be dozer by operating the dozer along it diagonally.

Steering is apt to be tricky on steep slopes, whether up or down, because when one steering clutch is released the track on that side slips and turns faster, the

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

51

machine pulls to the side and might place itself transversally of the grade with consequent danger of tipping over.

Digging and pushing should be done downhill as productivity is greater. Particularly so when the ground is very tough, even if the soil must then be pushed up the same hill for disposal.

When the digging is limited to a given area of the slope, and the material must then be pushed down to the bottom of the hill, it is good technique to drop two or three loads at the end of the cut, then pushing most of the pile down is a single pass.

Grading on side slopes If a slope must be notched (e.g. road cuts in hillsides), it will be necessary to first build a shelf. Set the blade in tilt position opposite to the slope so the dirt moved will side downhill and help in building up the selft. If the slope is too steep to work effectively with the tilted blade, proceed in one of the following ways: Push the material downhill to form a selft as in (A), so the dozer can start level side cuttings, as in (B).

Start the cut transversally to the slope, then turn to unload downhill. This will provide a more level shelf which can then be enlarged or graded off as required.

Dig a strip transversally to the slope, then proceed with a series of parallel cuts, always operating the higher track in the previous strip.

In each case the best possible advantage should be taken with soil configuration. When natural aids are not available, the machine can be moved onto boards or other lifts to start the cut at the desired slope.

252

Notching a shelf on side slopes, travelling across the slope, steering and unloading downhill.

A

B

245

Notching a shelf on side slopes, travelling and unloading downhill.

Dozing a shelf on side slopes by successive cuts across the slope.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

52 Clearing In land clearing of brush and small trees, clearing can be accomplished in one pass, with the blade cutting slightly below the ground. This will allow the blade to shear the roots. It may be necessary to back up occasionally to clear the roots from the cutting edge.

Roots under the edge cause the blade to ride up and waste machine power.

When removing small trees make gradual contact with blade. Keep the blade raised high to gain the maximum leverage to push over the tree.

Doze the roots and stump clear of the ground. Felled trees can be pushed more easily lengthwise from the stump end. Larger trees may require a few passes to cut some of the outlying root structure. This should be done around entire circumference of the three as close to the trunk as possible. Build up an earth ramp opposite the direction the tree is to be felled. This, with the blade raised high, will increase the leverage and make pushing easier (avoid ramming the tree).Remember when the tree begins to fall, back up rapidly so that the uplifting roots will not catch under and tilt over the machine.

RIPPER - Optional To raise or lower the ripper, move the control lever backwards or forwards. To stop movement, release the lever which will automatically return to neutral. The ripper is provided with shanks which can be removed from frame according to the needs. So, it is possible to use all shanks or only the central one for the most difficult jobs.

To better use the ripper some factors must be considered.

OPERATIVE NOTES To get the best machine performance it is necessary to adjust the tilt and pitch of the blade and to run machine at the speed suitable for the job to be done.

To obtain a smooth cut with a regular surface, the operator must observe the slopes to meet and everytime the front part of the machine tends to lift or lower, he must immediately compensate the gradient by lowering or lifting.

The raising and lowering must be done with quick movements of the lever; if not, hydraulic system valves open partly and oil overheats.

Note – The blade cutting edges must be efficient.

Before transferring the machine on asphalt, put street plates on track shoes.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

53

BREAKAGE The soil can be broken in fine or coarse pieces depending on work depth, number and shape of shanks and pass spacing. Breakage must be established on the basis of the subsequent use of the ripper material.

For instance, if the broken material must be spread and back bladed, material needs to be finer than when it must be dozer away.

WORK DEPTH It is good practice to work to the maximum depth permitted by the available power and traction taking into account the breakage desired.

Note that: - with strongly cohesive materials, such as clay, tuff, marl, gypsum, sandstone, calcite and other compact soils, the greater the depth the coarser the breakage; - with stratified materials, such as limestone, schist, gneiss, travertine, etc., the greater the depth the finer the breakage.

MATERIAL HEAPING Generally it is convenient to heap material crosswise to the ripping direction in order to keep the transport distance to a minimum and to smooth out any irregularity.

Important – Sharp turns while the teeth are in the ground are apt to break the shanks.

Only wide turns or small directional corrections are permissible when ripper is sunk in.

WARNING When not in use always carry ripper in full raise position during operation and lowered to ground when parked.

NUMBER AND SHAPE OF TEETH The number of teeth depends on the power required of the machine in relation to the desired breakage.

Generally, the greater the number of teeth the finer the breakege. Exceptions are the stratified materials where large slabs are lifted when working with more than one tooth.

As regards tooth shape, the partially curved type can be considered the universal standard. The curved teeth facilitate the lifting and to some extent also the turning over of the material.

SPACING BETWEEN PASSES It must be such as to complete the breaking of the previous pass, always in relation to the desired fineness. Generally, spacing must be less than work depth.

In plastic soils, e.g. gypsun (in which the implement makes just a cut) or in hard soil (in which the working depth must be reduced) criss-cross passes may be required.

The ripper should be kept in raised position operating as follows: - raise the ripper so that the holes F will mach; - drive pivot P into holes F; - block the pin by installing pin S into hol T.

SPEED AND DIRECTION It is good practice not the exceed 1.5-2 km/h to prevent harmful shocks to the implement and excessive wear.

When working on soft materials, it is preferable to increase the depth rather than speed. In the case of stratified materails, work crosswise and against the vein; on the contrary, in the material is landslipping, work in the direction of the landslide.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

54

MAINTENANCE

WARNING Do not allow unauthorized personnel to service or maintain this machine. Study the Operation and Maintenance Instruction Manual before, starting, operating, maintaining, fueling or servicing this machine.

Never lubricate, service or adjust with the engine running except as called for in the Operation and Maintenance Instruction or Service Manuals, to keep from being caught in moving parts or by a moving machine.

Shut down machine according to Instruction Manual procedure before lubricating, or any other servicing.

Always lower the attachment/tools to the ground and relieve the pressure in all systems, before performing any maintenance operation.

Attachments and operating tools may be lowered to ground in response to control lever whether engine is running or not.

When any supporting machine component must be removed or installed and jacks are used, be sure the support of the jack at the machine and on the ground are appropriate to the load to be applied. Transfer the load to authorized blocking or jack stand immediately.

Do not work on or under the machine or its components while supported only on a jack or other lifting device, according to local or national requirements.

Never use gasoline, solvent or other flammable fluid to clean parts. Use authorized commercial, non-flammable, non-toxic solvents.

DO NOT USE HANDS to search for suspected pressure leaks. Fluid escaping under pressure can have sufficient force to penetrate the skin, causing injuries.

When servicing or maintenance requires access to areas that cannot be reached from the ground, use a ladder or step platform that meets local or national requirements to reach the service point.

Perform all service or maintenance carefully.

Use only safety approved and properly grounded auxiliary power sources for heaters, chargers, pumps or similar equipment to reduce the hazard of electrical shocks.

Before starting the engine, warn all people who may be servicing or working around machine.

Keep hands and face away from loosen piping connections when performing efficiency tests of injectors or systems. Always wear safety glasses with side shields.

Use proper tools to bring holes into alignment. DO NOT USE FINGERS OR HANDS. Do not use matches, lighters or torches for a light source on the machine due to the presence of flammable fluids.

Do not work under or near unblocked or unsupported linkage, parts or machine.

Always engage all safety locks. Always turn the master switch (and key switch if so equipped ) to OFF position before cleaning, repairing or servicing or when parking the machine.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

55

WALK AROUND INSPECTION By quickly responding to initial troubles, required maintenance and downtime will be reduced. It is recommended to check the machine each day before beginning work or to make a walk around inspection at the completion of each day to check:

D. E. F. G. H. I. L. M.

A. Side final drive oil leakages.

B. Ineffective or broken instruments.

C. Engine oil/coolant leakages.

D

F

Hydraulic system leaks and damaged hoses.

Caked dirt on radiator grill.

Blade wear or damage.

Wear or damage to the blade linkage.

Track rollers and idler wheel oil leakages.

Track tensioner grease leakages.

Caked dirt and mud on track frames.

Loose threaded fasteners on various groups of the machine and relevant attachments.

B C

E A

G

H

I

L

M 2550-M003

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

56 MAINTENANCE OPERATIONS The intervals specified here refer to normal operating conditions. During the initial break-in period and under particularly severe working conditions, different servicing intervals may be required.

This chapter is particularly useful, in explaining the various operations to be performed at the same time.

None of the normal maintenance operations require the tool to be raised.

Before starting any operation, lower attachment to ground and turn off engine.

WARNING Do not alter the setting of the injection system, otherwise the Manufacturer is withdrawing from any responsibility regarding warranty obligations.

To get to the engine for maintenance operations, open the side panels by pushing the button shown after unlocking with the key.

WARNING If, for any reason, maintenance and/or repairs are done while attachment is raised, make certain it is supported and locked in safety position.

Drain the oil immediately after shutting off the engine so the oil is warm and flows more easily.

This will also aid the discharge of impurities.

Before and after any lubrication wipe clean all fittings, lids and plugs to prevent impurities from entering the system and dirt accumulation in lubricant residues.

Lubrication is an essential part of maintenance and safeguards the durability of the engine. Different lubricants are needed and some parts of the engine require more lubrication than others.

It is therefore important to strictly follow the instructions given for lubrication and servicing intervals. Regular and periodic lubrication of the movable parts diminishes the probabilities of inconveniences and mechanical breakdowns.

D255-2M079

To reach the steering clutches and brakes (manual disengagement), remove the rear cover after removing the screws, as indicated.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

57

LIST OF TOOLS PROVIDED

- Double head wrench

24 mm + 27 mm

- Double head wrench

19 mm + 22 mm

- Double head wrench

13 mm + 17 mm

- Double head wrench

12 mm + 14 mm

- Double head wrench

8 mm + 10 mm

- Allen wrench

12 mm

- Allen wrench

10 mm

- Allen wrench

8 mm

- Universal pliers - Hammer

0,5 kg

- Flat screwdriver - Phillips screwdriver - Grease gun with hose extension - Filter chain wrench

In accordance with ISO 4510 standard.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

58 LIST OF PROGRAMMED MAINTENANCE OPERATIONS

Every 10 Hours

1. INNER TRACK FRAME SUPPORTS - Lubrication 2. CAB VENTILATION AIR FILTER - Check

Every 100 Hours

3.

4.

5.

6.

7.

BEVEL GEAR - STEER. CLUTCHES AND BRAKES - Check oil level SIDE FINAL DRIVES - Check oil level HYDRAULIC SYSTEM - Check oil level DOZER BLADE CYLINDER SUPPORTS - Lubricate RIPPER LINKAGE - Lubricate

Every 250 Hours

8. GLASS FUEL FILTER - Clean 9. FUEL FILTER - Draining condensation 10. STEERING CLUTCHES/BRAKES - Change oil filter on return line

Every 500 Hours

11-12. ENGINE SUMP - Changing engine oil and filter 13. TORQUE CONVERTER/TRANSMISSION - Change oil filter on delivery 14. HYDRAULIC SYSTEM - Change oil filter on return line 15. ENGINE COOLANT FILTER - Replace cartridge 16. CAB VENTILATION AIR FILTER - Change 17. FUEL FILTERS - Replace filters

Every 1000 Hours

Every 2000 Hours

When required (indicator signals)

Variable periodic services

18-19. TORQUE CONVERTER/TRANSMISSION - Changing the oil and cleaning the suction filters 20. ENGINE - Fuel injectors - Calibrate 21. ENGINE - Valve clearance - Check valve clearance 22. BEVEL GEAR/STEER. CLUTCHES/BRAKES - Change oil 23. BEVEL GEAR/STEER. CLUTCHES/BRAKES - Change oil filter on suction line 24. SIDE FINAL DRIVES - Change oil 25. DRIVE SHAFT - Lubricate 26. BATTERIES - Check electrolyte level 27. ALTERNATOR/FAN DRIVE BELTS - Check

28. HYDRAULIC SYSTEM - Change oil 29. RADIATOR - Change coolant 30. CLOGGED ENGINE AIR CLEANER - Replace cartridge

31.

32.

33.

34.

35.

TORQUE CONVERTER/TRANSMISSION - Top-up level ENGINE OIL - Check oil level RADIATOR - Top-up coolant level HYDRAULIC SYSTEM - Change return oil filter ENGINE AIR CLEANER - Clean cartridges

36. TRACKS - Check tension 37. TRACKS IDLERS AND ROLLES 38. BLEEDING AIR FROM THE FUEL SYSTEM

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

59

Every 10 hours 1.

INNER TRACK FRAME SUPPORTS Lubrication Inject grease in the two linkage fittings (one on either track frame.)

Before injecting grease, accurately clean fittings.

2. CAB VENTILATION AIR FILTER - Check For access to this filter, open the rear door on the left side of the machine. Release the retainers on the filter housing Remove frame C and pull-out filter F.

WARNING Wear safety glasses with side shields or goggles when using compressed air for cleaning to reduce the danger of personal injury from flying particles.

Limit the pressure to 2 bar according to local or national requirements.

Inspect filter: if restricted clean as follows: - tap filter delicately, with holes lowermost, on a flat hard surface; - using dry and clean compressed air, blow through filter in a direction opposite the arrows stamped on back. Move air jet up and down the pleats until dust is completely removed; - re-fit filter in the direction of the stamped arrows showing the inlet air path.

Important – Keep air jet sufficiently clear of filter element, to avoid damaging it.

Note – Before fitting back the filter, clean container accurately.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

60 5.

Every 100 hours 3.

BEVEL GEAR/STEERING CLUTCHES AND BRAKES - Check oil level Remove the rear cover of the transmission housing as described in page 56, unscrew the plug indicated, pull the dipstick underneath and check that the oil level reaches the line etched on it. If necessary top-up with oil through the plug hole.

HYDRAULIC SYSTEM - Check oil level

WARNING Fluid under pressure: turn cap slowly to relieve pressure before removing it.

Check that the oil level is between sight gauge A (max. level) and gauge B (Min. level). This check must be done with machine on a flat surface, cold oil and engine idling. If the level appears through lower gauge B, remove the filler cap D and top-up until the level appears through upper gauge A.

D255-2M080

4. SIDE FINAL DRIVES - Check oil level Check that oil level reaches the plug indicated by the arrow (one plug to each final drive case); add oil through the plug hole, if necessary.

D255-2M038

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

61

6.

DOZER BLADE CYLINDER SUPPORTS Lubricate Inject grease in each of the blade cylinder support fittings. The fittings indicated by arrows are also installed on the cylinder on the opposite side of the machine.

Every 250 hours 8.

GLASS FUEL FILTER - Clean mesh filter

WARNING Never use gasoline, solvent or other flammable fluid to clean parts. Use exclusively qualified, nonflammable, non-toxic commercial solvents.

Open the left side panels of the engine compartment and loosen ringnut A, remove the mesh filter from glass B and clean it.

After reinstalling the filter, actuate manually the priming pump a few times, until the glass is filled.

D255-2M081

7. RIPPER LINKAGE - Lubricate Iniect grease into the ripper linkage fittings for ripper control. Those shown with white arrows are on the opposite side.

B

A D255-2M084

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

62 9.

FUEL FILTERS Draining condensation

Open the upper left engine compartment panel, drain the water and sediments from the fuel filter through the draining valve indicated.

With engine inoperative, loosen the valve located below the filter about 4 full turns and move it downward about 2 cm.

Drain eventual water and sediments until clean fuel only, flows-out.

Move the valve upward and tighten it, without over tightenin.

Loosen the screw located on the head of the filter support using a 30 mm socket and hold the filter canister with the handle indicated. Before installing a new filter, clean the support and canister, change the gaskets and lubricate them with engine oil, before installing the filter on the support. Tighten to a torque of 13.5 - 15 daNm.

Note – The draining interval can be increased or decreased, as a function of the presence of water and the quantity of fuel.

Water draining valve on fuel filter 2550-M005

10. STEERING CLUTCHES/BRAKES Change filter on return line

WARNING Never use gasoline, solvents or other inflammable fluids to clean parts. Use approved commercial solvents which are non-flammable and atoxic.

Every 500 hours 11-12. Engine sump Changing engine oil and filter Open the left front panel of the engine compartment and with warm engine, drain the oil through lower plug T loosening it with a 8 mm Allen wrench. To facilitate the draining, remove plug B. Note – The operation must be performed at every engine oil change.

WARNING

Open the upper and lower panels indicated on the right side of the machine.

Be careful when operating with the cowling open and hot engine to avoid eventual burns.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

63 - Re-install draining plug T and pour new oil through filler neck B, to the maximum level marked on dipstick A; - Refill with oil of the prescribed type and grade (see "TABLE OF CAPACITIES") - operate the engine at low idle; - stop the engine and top-up at maximum level, after a few minutes.

T

D255-2M083

Replace the engine oil filter proceeding as follows: - clean the filter supporting area and loosen it; - fill the new filter with fresh oil and lubricate the relevant gasket; - tighten the filter manually. After the gasket contacts its seating face on the engine block, tighten further 3/4 turn.

The replacement of the filter must be performed at the prescribed interval, since, in case of clogging, the oil circulated would not be filtered any more.

T. Engine oil draining plug

B A

D255-2M082

D255-2M041

A. Oil dipstick - B. Filler neck

WARNING Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust gases.

Warn all people who may be servicing or working around machine before starting engine.

MIN

MAX

WARNING Be careful when operating with the cowling open and hot engine to avoid eventual burns.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

D350M0176

2550

64 13. TORQUE CONVERTER/TRANSMISSION Change oil filter on delivery

WARNING Be careful when operating with the cowling open and hot engine to avoid eventual burns.

Clean thoroughly the area around the filter.

Remove the cartridge from the support using the chain wrench provided.

Prior to the installation of a new filter, oil the gasket.

After the gasket contacts the support, tighten further 3/4 turn.

D255-2M047

WARNING Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust fumes.

AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

L.501c D255-2M045

14. HYDRAULIC SYSTEM Change oil filter on return line

Check that the oil level is between sight gauges A (MAX) and B (MIN). This check to be performed with machine on level, blade on ground, oil cold and engine running at low idle.

If required, add oil through filler plug D.

WARNING Fluid under pressure: turn cap slowly to relieve pressure before removing it.

Never use gasoline, solvents or other inflammable fluids to clean parts. Use approved commercial solvents which are non-flammable and atoxic.

Proceed as follows: - clean the filter cover L and the surrounding area; - take off cover L, remove element F on the return line and replace it with a new one; - re-install cover L.

D255-2M038

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

65

15. ENGINE COOLANT FILTER - Replace cartridge Open the upper panel of the engine compartment on the right side of the machine.

WARNING FLUID UNDER PRESSURE; prior to removing the cap, turn it slowly to relieve the pressure.

To avoid burns, do not loosen the radiator cap with an hot engine.

B

D255-2M049

Coolant filter

WARNING Do not run the engine in closed areas without proper ventilation to remove deadly exhaust fumes.

Loosen slowly the radiator cap indicated, when the engine has been inoperative for at least one hour, to release the pressure trapped in the system.

Remove all dirt or scaling accumulated between support and filter. Close valve on the filter support.

Loosen filter B paying attention to prevent spilling the liquid. Before installing the new filter, clean the the support in the contact area with the gasket.

Tighten the new filter after applying on it a thin film of oil on the gasket, until it touches the support. Then, tighten by hand half a turn further.

Reopen the valve on the filter.

Start the engine and check that there are no leakages.

Cut-off the engine and check the coolant level.

16. CAB VENTILATION AIR FILTER - Change For access to this filter, open rear left side door, free the retainers shown. Take off frame C, and remove filter F. Before this, clean container accurately.

D255-2M086

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

66 ENGINE: 17. FUEL FILTERS - Replace filters Open the left side panel of the engine compartment.

1

WARNING Never use gasoline, solvent or other flammable fluid to clean parts. Use exclusively qualified, nonflammable, non-toxic commercial solvents.

When using compressed air for cleaning parts, use safety glasses with side shields or goggles, so as to reduce the danger for personal injuries cause by flying particles. Limit pressure to 2 bar, in accordance with local and national regulations.

Clean the base of the support and the surrounding area.

Loosen the filters indicated in the figure.

Clean with a dry rag the support area contacting the filter gaskets.

Every 1000 hours 18-19. TORQUE CONVERTER/TRANSMISSION Changing the oil and cleaning the suction filters

WARNING AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

With the transmission oil hot, remove the cover as indicated and remove the plug underneath, draining the oil. To facilitate the draining, remove plug C.

D255-2M051

Replace gaskets "1" fill the new filters with fresh fuel and smear a film of engine oil on the gasket, and tighten them against the support.

Then, turn 1/2 turn further.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

67

WARNING

WARNING

Always wear safety glasses with side shields when using compressed air to clean parts, so as to minimize the danger of personal injuries caused by flying particles. Limit the pressure to 2 bar, in accordance with local or national regulations.

Never use gasoline, solvents or other inflammable fluids to clean parts. Use approved commercial solvents which are non-flammable and atoxic.

Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust fumes.

After reinstalling the draining plug, refill the group through the filler shown up to the level marked on the dipstick incorporated with plug C. Start the engine, run it at idle for a few minutes; actuate a few times the gearshift lever.

Stop the engine and, after a few minutes, top-up the oil level in the system, checking the dipstick on plug C.

Clean accurately the area around the filters. With machine on flat ground, remove plug S and drain the oil. To facilitate the draining, remove the filler plug.

Disconnect the oil suction piping from flanges M and N, loosen screws P and T and remove the flanges.

Than, remove filters A and R, their gaskets and the O-ring on flange M.

C

P M

S T

A

D255-2M085

R N L. 559

Clean the filters, magnetic rod and covers with a brush and solvent and dry with compressed air, than reassemble all components and connect the pipings.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

68 ENGINE:

22. BEVEL GEAR - STEERING CLUTCHES/ BRAKES - Change oil

20. FUEL INJECTORS Calibrate setting of injectors

DANGER Keep hands away from the tip of injectors, when checking efficiency. Fine sprayed fuel under pressure could penetrate the skin and cause blood poisoning. Also, when checking the efficiency of injectors, wear safety glasses with side shields.

Have the injectors checked by a Service specialised shop.

21. VALVE CLEARANCE Check valve clearance, with cold engine Have the clearance between engine valves and rocker arms checked by specialised personnel.

The adjustment of the valve clearance must be done with cold engine.

Valve clearance - Intake .................................................... 0.30 mm - Exhaust ................................................. 0.60 mm

WARNING Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust fumes.

WARNING AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

Never use gasoline, solvents or other inflammable fluids to clean parts. Use approved commercial solvents which are non-flammable and atoxic.

With oil hot, remove the plug indicated and drain completely the oil.

Reinstall the plug after cleaning it carefully.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

69

Fill with oil through the filler up to the prescribed level, indicated by a mark on the dipstick on the plug.

23. BEVEL GEAR AND STEERING CLUTCHES/ BRAKES - Change oil filter on suction line.

WARNING Be careful when operating with the cowling open and hot engine to avoid eventual burns.

AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

D255-2M080

Start the engine and let it run at about 1000 rpm.

Actuate the steering clutch levers a few times.

Stop the engine and after a few minutes check and if necessary add oil.

Clean accurately the area around the filter.

Remove the filter cartridge indicated from its support using the chain wrench provided.

Prior to the installation of the new filter, oil the gasket.

After the gasket contacts the support, tighten further 3/4 turn.

D255-2M052

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

70 24. SIDE FINAL DRIVES - Change oil

WARNING AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

Unscrew lower plug B (one to each case) and allow oil to drain out completely. Re-fit drain plug, pour in new oil through filler A. Repeat the operation on the other one.

25. DRIVE SHAFT - Lubricate To perform this operation, it is preferable to lift the cab to facilitate the access to the drive shaft located between torque converter and transmission.

Inject grease (3 or 4 shots) in each fitting on universal joint spiders.

Note – Perform this operation more frequently if machine is used under extreme dust conditions.

1

1

3

4 2

3

4 L. 563

1. Grease fittings - 2. Drive shaft - 3. Spiders 4. Screws

A

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

71

26. BATTERIES - Check electrolyte level

WARNING Batteries contain "Sulfuric Acid". Shield your eyes when working near the battery to protect against possible spilling of the acid solution. In case of acid contact with skin, eyes or clothing, "FLUSH IMMEDIATELY WITH WATER FOR A MINIMUM OF 15 MINUTES". Get medical attention immediately.

Be sure to connect booster cables for the proper terminal, (+ with +) and (- with -) at both ends. Avoid shorting cable clamps.

FLAMMABLES VAPORS. Extinguish all smoking materials or open flames before checking and filling batteries due to the presence of flammable gases.

Do not check battery by sparking.

Caution To maintain batteries in efficient condition follow instructions: - Do not leave lights on for extended periods when engine is off or idling.

- To prevent running down the batteries, idle the engine rather than shutting it off if the machine is to be stopped for a short period.

- Make sure that cable terminals are properly secured to battery posts and are covered with a thin layer of petroleum jelly.

- Keep batteries clean, especially on top.

- Disconnect ground cable before touching terminals.

To avoid possible damages to the electrical system: - do not mismatch the terminal connection on batteries; - do not let the engine run when batteries are disconnected; - if batteries are partially discharged and auxiliary batteries are used to start engine, or in the event of battery charging through external sources, connect terminals of the same sign (+ to + and - to -).

Check electrolyte level: it must reach reference mark on battery side panel. To make up level add distilled water.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

72 27. FAN-ALTERNATOR BELT - Check condition and sagging of belt, replace

Under these circumstances, the tension limits must be included between a minimum of 36 daNm and a maximum of 49 daNm.

WARNING Do not inspect the tension or adjust belts with the engine running. Be particularly aware of fans.

Do not place the head, body, limbs, feet or hands near belts or moving fans. Be particularly aware of blowing fans.

Open the right and left engine panels and inspect visually. Eventual crosswise cracks on the belt are acceptable.

Crosswise cracks combind with longitudinal cracks, fraying, breakage points on the belt are not acceptable. In such a case, replace it.

D255-2M048

Acceptable condition

Inspection of belt tension Belt to be replaced Replacing a belt Actuate the tensioner with a leverage and remove the belt. To install a new belt, place it on the fan and crankshaft pulleys, raise the tensioner and complete the turning of the belt, as illustrated. Also, check that the tensioner securing nut is tightened to a torque of 4.3 daNm.

Measure the belt sag on the long span of the belt that under a pressure of a finger deflects a minimum of 9.5 mm and a maximum of 12.7 mm.

A more accurate inspection can be done using a belt dynamometer located in the middle of the longest span of the belt.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

73

Every 2000 hours 28. HYDRAULIC SYSTEM - Change oil F

WARNING Fluid under pressure: turn cap slowly to relieve pressure before removing it.

AVOID POLLUTING THE ENVIRONMENT. Dispose of batteries, lubricating, cooling and hydraulic fluids, filter elements or cleaning rags impregnated with these fluids in accordance with national and local regulations, classifying these materials as polluting, hazardous or dangerous.

Never use gasoline, solvents or other inflammable fluids to clean parts. Use approved commercial solvents which are non-flammable and atoxic.

L. 566

Refilling Fill the tank with oil up to max level A; install plug D.

Drainage - Position machine level, with attachments flat on the ground; - remove filler plug and unscrew plug T to drain oil from the tank; Wash plug T and magnetic rod Z with appropriate solvent.

D255-2M038

WARNING Prior to starting the engine, warn all people who may be servicing or working around machine Do not run the engine of this machine in closed areas without proper ventilation to remove deadly exhaust fumes.

Wash with solvent, and if necessary, change suction filter F, located in correspondence with the flange connecting the oil suction piping (front right side of reservoir).

To perform this operation, it is necessary to tilit the cab.

Start the engine; lift and lower the blade (and ripper frame, if any) several times to fill the cylinders and lines. Add oil in tank, repeatedly. Place the machine on level ground. With blade (and ripper) on ground, engine idling, oil cold, check oil level is between HIGH gauge A and LOW gauge B; make up oil level if necessary.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

74 29. RADIATOR - Change coolant

WARNING Fluid under pressure: turn cap slowly to relieve pressure before removing or until pressure has been relieved as coolant may boil over and cause personal injury.

WARNING Be careful when operating with the cowling open and hot engine to avoid eventual burns.

Replace coolant proceeding as follows: - with engine cold, drain coolant from engine by unscrewing plug A (remove filler cap for faster draining); - re-install plug A;

D255-2M085

Note – If cooling system is provided with plain water instead of coolant (having antioxidant, antifouling, rust preventive properties) flush system as follows.

- Dilute "Radiator flushing solution" in water in the proportion labelled on container. Pour solution in radiator with cold engine.

- Work machine at high revs until engine is warm.

- Stop engine and drain flushing solution.

- Let engine cool, then run water through radiator filler neck and let it drain from bottom of radiator.

- pour coolant into radiator through filler neck to fill up the system; - refit the radiator plug; - start engine and let it run for a few minutes; - let engine cool, then top up coolant level through radiator filler.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

75

30. CLOGGED ENGINE AIR CLEANER Replace cartridges Open the engine left side panel.

Remove the two filtering elements: one inner B, the other outer A and replace them.

WHEN REQUIRED Operations described under items 31, 32, 33, 34, 35 should be performed when this need is signalled by EDM indicators c, d, e, m, n.

Before installing new elements, clean inside canister.

FIAT-HITACHI

a PRESSURES ENG

b c d e

k

TRANS

FILTERS

LEVELS TRANS

AIR

ENG

HYD

m n

WATER

h r

TEMPERATURES

f

LEVELS CHECK

WATER

TRANS

g

i D255-2M088

A B 31. TORQUE CONVERTER/TRANSMISSION Top-up level

D255-2M087

Operation to be performed when indicator c on the “Control Module” indicates an insufficient level of the converter/transmission oil level. With engine stopped since at least 15 minutes and the machine standing on flat ground check that the oil level is near the top mark on the dipstick attached to plug C. If necessary, topup with oil through the filler as indicated.

C D255-2M085

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

76 33. RADIATOR - Top up coolant level

ENGINE: 32. ENGINE OIL - Check oil level

WARNING

Open the upper left engine compartment panel.

With the machine on flat ground and the engine inoperative at least 5 minutes, check on the appropriate dipstick A that the oil level is between the two nothes indicated. If necessary, top-up the oil through filler neck B payng attention not to exceed the correspondin notch.

Warning – Do not operate the engine with oil below the lower notch (MIN.).

B

Fluid under pressure: turn cap slowly to relieve pressure before removing or until pressure has been relieved as coolant may boil over and cause personal injury.

Operation to be performed whenever the associated "ELECTRONIC DATA MONITOR" indicator e signals an insufficient level.

Check coolant level when engine is cold.

Turn radiator cap slowly to relieve pressure before removing. Maintain coolant level about 3 cm from rim of filler neck. Any coolant added must be the same mixture of clean water and antifreeze as that in the system.

Also check the condition of radiator cap seal and relief valve.

A

D255-2M082

A. Engine oil dipstick B. Engine oil filler neck

D255-2M086

34. HYDRAULIC SYSTEM Change return oil filter

Oil dipstick (A) The correct oil level must be included between the two marks.

WARNING Fluid under pressure: turn cap slowly to relieve pressure before removing it.

Operation to be performed whenever the associated ELECTRONIC DATA MONITOR indicator n signals a clogged filter.

For filter replacement see instructions under item 14 (pag. 64).

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

77

35. ENGINE AIR CLEANER - Clean cartridges Operation to be performed when relevant indicator m on the "CONTROL MODULE" indicates that the air cleaner is clogged.

Canister C of the air cleaner contains to co-axial filtering elements: one inner B and one outer A. When the air cleaner indicator light comes ON, clean outer element A. If, after re-installation of the outer element, the indicator stays ON, replace also inner element B. Clean the air cleaner canister and the surrounding area. Remove the filter cover and pull outer element A first, then inner element B. L.039 C

WARNING When using compressed air for cleaning parts, use safety glasses with side shields or goggles, so as to reduce the danger for personal injuries cause by flying particles. Limit pressure to 2 bar, in accordance with local and national regulations.

Clean outer element A, directing a jet of dry and clean compressed air, at a pressure of about 2 bar, along the pleats, inside the cartridge, until dust is completely eliminated.

After cleaning the cartridge, check it for ruptures or holes by placing a light bulb inside the element: Light will shine through any holes or tears, making them visible, thus the element must be replaced. Replace the element when the relevant gasket is damaged, as well.

A B

D255-2M089

Important – Keep spare elements of the prescribed types, available from the Sales Organisation, on hand to reduce machine downtime.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

78

VARIABLE PERIODIC SERVICES 36. TRACKS - Check tension

DANGER Fluid under pressure: to loosen track tension follow procedures recommended in Operation and Maintenance Instruction Manual.

Track release spring is assembled into machine with high compressive load. Follow procedures recommended in Service Manual when assembling or disassembling this part.

If track sag C between carrier roller and idler is more than 3 to 4 cm, inject grease into fitting of valve B, in adjusting cylinder until proper tension is reached.

If track is too tight slowly loosen adjustment valve B to allow some grease to escape from cylinder. It may be necessary to back up machine a few yards. Retighten valve B. Note – Track tension may be somewhat reduced when working in muddy, wet clay terrains, or on sand, gravel, snow or ice.

37. TRACK IDLERS AND ROLLERS Idlers and rollers are of the permanent lubrication design.

Should doubts about their lubrication arise, loosen plugs A: if clean oil escapes, the idlers and rollers are properly filled with oil. Should the escaping oil be dirty or mixed with water, mount the appropriate adaptor in lieu of plug A. Pump new oil inside until clean oil escapes through the adaptor grooves. Remove the adaptor and reinstall plug A.

D255-2M106

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

79

38. BLEEDING AIR FROM THE FUEL SYSTEM The entry of air into fuel system occurs during a long period of no activity of the machine, when pipes and filters are removed or when running out of fuel in the reservoir.

Air into the system makes starting difficult, thus it becomes necessary to bleed it.

The bleeding operation is performed wiht a filled reservoir, proceeding as follows: Loosen bleeding screws (A) on the fuel filters two turns and actuate, repeatedlly, pump (B) until fuel flows through the bleeding screws, free from air bubbles.

Retighten the screws and start the engine.

WARNING Due to the presence of flammable fumes, estinguish all smoking materials and naked flames.

Keep your face away from loosen pipe connections. Wear safety glasses with side shields.

A

B D255-2M057

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

80

ELECTRICAL SYSTEM

FUSES Remove fuse panel and pull out pressurizzed covers on fuse boxes A and B. Fuses protect: a. Control module ( E.D.M. - 4 Amp) b. Horn (7.5 Amp) c. Power socket - cab ceiling light - eventual radio (7.5 Amp) d. Cab front and rear lights (20 Amp) e. Electric stop timer (4 Amp) f. Front beams, dashboard light (7.5 Amp) g. Electric fan (on cab variant - 20 Amp) h. Front windshield wiper (on cab variant - 7.5 Amp) i. Rear wiper (on cab variant - 7.5 Amp) l. Right wiper (on cab variant - 7.5 Amp) m. Left wiper - Washer pumps (on cab variant - 7.5 Amp) n. Fused no used Should a fuse blow, it must be changed immediately.

If the problem reoccurs; have skilled installation servicemen check it.

A

B

D255-2M059

The location of fuse boxes is indicated in the top figure.

a

g

b

h

c

i

d

l

e

m

f

n

WARNING Always disconnect earth cable from the battery before cleaning, repairing, connecting or disconnecting any cable from the electrical system in order to prevent injury.

Always keep machine lights efficient by replacing any burnt out lamp right away.

D255-2M061

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

81

LOW EMISSION ENGINE PRE-HEATING FUSES

92

To reach the fuses of the pre-heating group, remove the floorplate entering the cab on the right side of the machine and remove the cover behind it.

Remove the press-fitted plastic cover on the fuse holder. The fuses protect the following components; o. p. q. r. s. t.

Fuse no used Fuse no used Fuse no used Air conditioner (20 A) Starting solenoid switch (4 A) Level of water (4 A)

88

D255-2M090

STARTING WITH BOOSTER BATTERIES If the batteries are partially discharged it is possible to start the engine using the booster cables and the receptacle located on the machine behind the left side rear panel.

Proceed as follows: - plug the booster cable into the receptacle on the machine; - connect the opposite ends of the cable to the appropriate terminals of the booster batteries; - turn ON the MASTER SWITCH; - start the engine in the usual manner previously described; - once the engine runs, unplug the booster cable from the receptacle on the machine.

o p q r s t D255-2M091 D255-2M093

"LINK" FUSES Link fuses - items 50A (88) and 80A (92) in wiring diagram - are accessible after opening the panel on engine RH side and are located on the inner side of frame beam.

Note – Never start the engine without having the batteries connected the electrical system since it is possible to damage the electronic components installed on this machine.

WARNING If the batteries are partially discharged and the engine is started with a booster, the connections to the batteries on the machine must be made by pairing the same signs (+ with + and - with -).

Never short terminals.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

82

ELECTRICAL SYSTEM - WIRING DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 66 67 68 69

Electrical connector for external starting Batteries Master switch Starter motor Key ignition switch Starter relay Diode Resistance Electric cut-off relay 150 Amp Engine stop electromagnet Fuse 7.5 A Adjustable ceiling lamp Socket for lighter and lamp Compressor clutch control relay Electronic tachometer Front R-H flood light Front L-H flood light Fuse 7.5 A Switch for cab flood light Fuse 20 A Front R-H cab flood light Front L-H cab flood light Reae flood light switch Fuse 4 A Rear R-H cab light Rear L-H cab light Switch for cab flood light Fuse 7.5 A Horn Pressure switch (back-up alarm) Back-up alarm Push- button switch Side windshield washer motor pump Front and rear windshield washer motor pump Fuse 7.5 A Let and right-H door windshield wiper switch-2 speed L-H door windshield wiper motor Fuse 7.5 A Connections box R-H door windshield wiper motor Fuse 7.5 A Push- button switch Front windshield wiper motor-I speed Fuse 7.5 A Front and rear windshield wiper switch Rear windshield wiper motor-I speed Fuse 20 A (conditioner) Horn push-button switch Radio (provision) Alternator with electronic regulator Fuse 4 A R-H bracke failure switch L-H bracke failure switch Bracke warning light Engine water high temperature switch Air cleaner restriction sensor Implement oil filter restriction switch Transmission oil high temperature switch Hourmeter Engine oil press. switch and hourmeter contr.

Fuel level sensor Coolant level sensor Engine oil level sensor Transmission oil level sensor Transmission oil pressure sensor Buzzer Electronic data monitor

75 76 77 78 79 80 81 82 84 85 86 87 88 89 92 93 94 95 96 97 98 99 105 106 107 108 109 110 111 112

Electrofan Conditioner temperature switch Pressure switch Compressor electromaghetic clutch Relay 50 A Condenser electrofans Dash light Fuse 20 A (electrofan) External key ignition switch Tractor relay Diode box Cab realy Link fuse 50 A Starter safety proximity switch Link fuse 50 A Starter safety realy Electrofan switch Conditioner switch Push-button switch (brackes warning light test) Electronic timer (engine stop electromagnet) Push-button switch (control linkage) Solenoid valve (6 way diverter valves) Fuse 4 A Fuse 4 A Speed sensor Mega fuse 150 A Cold start push-button sw.

Cold start relay Grid heater Conditioner relay 10/20 A

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

83

2550-M004 Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

xx

2550

85

TROUBLESHOOTING This chapter lists the most evident malfunctions that the operator can be confronted with during operations.

For each trouble, the most probable causes are listed.

For the removal, repair and installation operations, consult the REPAIR MANUALS.

GROUPS/SYSTEMS ANALIZED

M

ENGINE

T

TRANSMISSION

S

STEERING

F

BRAKING SYSTEM

H

HYDRAULIC SYSTEM

E

ELECTRICAL SYSTEM

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

86 TROUBLESHOOTING

ENGINE CASE

TROUBLE

PROBABLE CAUSES

M1

Starter motor inoperative

- Battery cut-off master switch OPEN or FAULTY - Dead battery - Link fuses burnt - Starter switch faulty - Starter solenoid faulty - Starter motor faulty

M2

The starter motor crancks, but the engine does not start

-

M3

The engine smokes a lot and lacks power

- Injectors faulty - Injection pump out of calibration or faulty

M4

The engine does not stop, in spite of specific comand

- Electric stop linkage out of line - Electric stop faulty

Lack of fuel Fuel filter clogged Electric stop faulty Injectors clogged Injection pump faulty

TRANSMISSION CASE

PROBABLE CAUSES

TROUBLE

T1

Low lube oil pressure The indicator comes ON with engine running

-

T2

Transmission pressure normal in neutral, but low when transmission engaged. The machine is difficult to start in one direction and the torque is insufficient

- Plunger of direction modulating valve seized - Orifice of modulating valve plunger clogged

Transmission oil level low Converter pump suction filter clogged Suction piping clogged Oil inappropriate

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

87 TROUBLESHOOTING

TRANSMISSION CASE

PROBABLE CAUSES

TROUBLE

T3

Normal pressure in transmission control circuit, low power in some speeds and overheating of oil

- Clutch discs worn or warped

T4

Engine oil and transmission oil getting low at the same time

- Engine crankshaft seal damaged

STEERING CASE

TROUBLE

PROBABLE CAUSES

S1

The machine does not steer in one direction, or the steering is not symmetric

-

S2

The machine steers without using the levers

- Pilot control valve plungers seized - Steering clutches/brakes control valve spools seized

S3

The machine oversteers

- Pilot control valve plungers seized - Pilot control valve discharge pipe restricted - Steering/brakes control valve spools seized

S4

With steering levers half-way, the machine steers abruptly

- Brake control valve spool seized - Brake linkage seized - Automatic adjustment inoperative

Brake band worn Automatic adjustment seized Pressure regulation valve seized Control valve spools seized Control valve or rotating sealing leaking

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

88 TROUBLESHOOTING

SERVICE BRAKES CASE

PROBABLE CAUSES

TROUBLE

F1

Braking performance inadequate

- Wear or degradation of brake bands - Automatic adjustment inoperative

F2

The operation of the central brake causes a steering effect

- Seizing of steering clutches/brakes spools - Automatic adjustment does not operate correctly - Seizing of one of the brake linkages

EQUIPMENT HYDRAULICS CASE

TROUBLE

PROBABLE CAUSES

H1

The equipment is inoperative

- Equipment pump faulty

H2

The equipment operates in one direction

- Control valve fauty - Safety valve seized open - Stroke-end valves seized open

H3

The equipment does not remain in the position selected

- Excessive leakages by control valve spools - Cylinder seals leaking - Air in the cylinders

H4

The cylinders move too slowly

- Pump worn or defective - Main safety valve seized open - Control linkage out of adjustment

H5

The hydraulic oil overheats

- Oil level insufficient - Suction filter clogged - Main safety valve out of adjustment

H6

Operation of equipment slow and weak

- Equipment pump defective - Suction filter clogged - Main safety valve set too low

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

89 TROUBLE SHOOTING

ELECTRICAL SYSTEM CASE

TROUBLE

PROBABLE CAUSES

E1

Turning the key switch, the machine is dead

- Battery cut-off master switch OPEN or FAULTY - Batteries dead - Link fuses burnt - Key switch defective

E2

With engine running there is the indication that the alternator does not charge

- Link fuses burnt - EDM Monitor defective - Alternator faulty

E3

One or more electrical users inoperative

- Lack of continuity in electrical wiring - Specific fuse burnt - Control switch faulty

E4

The EDM monitor gives inappropriate and/or wrong indications

- Electrical wiring with defective connections - Faulty sensor - EDM electronic unit faulty

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

90 NOTE

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

2550

91

LIST OF RESIDUAL DANGERS This machine has been designed and manufactured so as to be intrinsically safe.

All possible precautions have been taken to prevent or to limit situations of danger or risks for personal health and safety.

However, the arrangement, the activity and the operational environment present risks natural with the job, thus cannot be eliminated.

For them a warning is given here below: LIST OF RESIDUAL RISKS CONNECTED WITH THE OPERATION OF THE MACHINE. - Possibility of hitting against obstructions, or against other vehicles.

- Possibility of falling into holes, ravines, watercourses.

- Possibility of roll-over due to caving-in of the terrain.

- Possibility of being hit by landslides, falling rocks, earth.

- Being involved by falling structures or trees.

- Possibility of contact with high voltage electric lines or flammable or pressurized fluid pipelines.

- Possibility of having the machine temporarily immobilized by an external failure or damage.

- Possibility of shaking or fatiguing for a too fast travel on rough terrain.

LIST OF RESIDUAL RISKS CONNECTED WIHT REPAIRS/MAINTENANCE - Injuries, amputations, burns in the engine compartment, if interventions are performed with engine running.

- Burns caused by contact with hot parts such as: muffler, hydraulic pipings, valves, oil sumps.

- Splashes or injection of harmful fluids under pressure, when working on hydraulic systems without having first discharged residual pressure.

- Inhaling or touching acid fumes/liquids, when working on batteries without appropriate precautions.

- Cuts, bruises caused by careless handling of inner mechanical components, after their disassembly.

These risks are minimized when adopting: - elementary rules for care in the operation or repairs/ maintenance interventions; - obey the warnings and recommendatios provided in this Manual.

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

82 (21.7)

67 (17.7) 100 (26.4)

43 (11.3) 9 (2.4)

Bevel-gear, Steering clutches brakes

Converter/transmission

Equipment hydraulic system

Side final Drives (each)

Track idlers and rollers

Study SAFETY RULES in the front of this manual thoroughly for the protection of machine and safety of personnel

0.5 (0.1)

Normal Service interval Half normal interval One quarter normal interval

as 0.5% sulfur 0.5 to 1% up to 1%

If the content of sulfur of the fuel exceeds 0.5%, change the engine oil as follows:

CNH MS 1209, Hy-Tran®Ultra

SAE 10W-30

SAE 10W

API CH-4 ACEA E5

CASE NO. 1 Engine oil

SAE 80W-90

ATF Type A SUFFIX A ALLISON C4

API GL5 MIL-L-2105D

HYPOIDE 90 AKCELA GEAR 135 HEP

GRADE NT

Grade 251 H - EP Spec B-27

ISO VG-46 DIN 51524 PART 2 HVI

AKCELA Hydraulic Excavator Fluid - MS 1230

SAE 10W

SAE 10W-30

SAE 15W-40 SAE 10W-30

–

–

VISCOSITY GRADE

–

CNH MAT3505 MS1209

AKCELA HY-TRAN®ULTRA

CASE Molydisulfuide Grease

API CH-4 ACEA E5

API CH-4 ACEA E5

AKCELA NO. 1 Engine oil* AKCELA NO. 1 Engine oil

Diesel fuel ASTM No. 2-D type TT of good quality and brand

Mixture of water and antifreeze at 50%. The mixture provides oxidation, foaming, corrosion, scaling and freezing protection properties down to - 35 °C (- 31 °F).

(international classification)

REFILL

–

Notes: - In case of a lower classification of CH4 engine oil, the change must be done every 250 hours.

- The change interval must be reduced when present sulfur in the fuel exceed to 0,5% or the ambient temperature exceed to 38 °C.

Cab tipping pump

–

18 (4.8)

Engine

Grease fittings

495 (130.8)

Premium Anti-Freeze MS 1710

BRAND

Liters 65 (17.2)

FLUID AND LUBRIFICANTS AKCELA

QUANTITY

Fuel tank

Cooling system

ITEM

FLUID CAPACITIES 92 2550

COPYRIGHT BY CNH Italia S.p.A. Product Support Via Plava, 80 - 10135 Torino

All rights reserved. Reproduction of text and illustrations in whole or in part, is strictly prohibited

Print No. 84415720 - English - II - 2011

xx

2550

2550 Crawler Dozer Crawler Dozer

Operator’s Manual Print No. 84415720

1st edition English 02/11

from serial no: FNH02550NBHC00001