Tigercat T726E TRENCHER OPERATOR'S MANUAL - PDF DOWNLOAD

OPERATOR'S MANUAL Tigercat T726E TRENCHER ISSUE 2.0, JUNE, 2010

TABLE OF CONTENTS SECTION INTRODUCTION .............................................................................................................. iii SAFETY ............................................................................................................................ 1 CONTROLS AND OPERATION ........................................................................................ 2 LUBRICATION AND MAINTENANCE ............................................................................... 3

T726E-OM00

T726E Available Literature Operator's Manual (This Manual) ................................... Part No. 33524A Service Manual ................................................................ Part No. 33525A Parts Catalog ................................................................... Part No. 33526A

Tigercat Tigercat Industries Inc. P.O. Box 544 Paris, Ontario Canada N3L 3T6

Tel: (519) 442-1000

Fax: (519) 442-1855

Tigercat T726E Trencher

Introduction

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Tigercat T726E Trencher Tigercat T726E Trencher

Introduction

INTRODUCTION An Operator's manual, Service manual and a Parts catalog are made available by Tigercat to assist the dealer, customer and operator in becoming familiar with the features of the T726E Trencher serial number 726T0101 and up.

The T726E Trencher is designed to cut ground surfaces too hard to cut with bucket-type excavators in preparation for digging trenches for laying pipeline, cable or drainage.

The operator's manual will assist the operator with the techniques of proper and safe operation of the T726E Trencher. There is also important information regarding the safe operation of the attachment. The service manual contains safety and servicing procedures and a preventive maintenance schedule to ensure optimum machine performance.

Section 1 in both the operator's manual and the service manual contains safety information that must be followed. As well, throughout the rest of the manuals, WARNING and CAUTION notices are displayed where necessary, drawing attention to possible hazards when performing certain procedures.

Only trained personnel should be allowed to operate or work on the machine.

The information contained in this manual is current at time of printing. Improvements to the machine are on-going and may not be covered, therefore in these cases contact your Tigercat dealer for the appropriate information.

The phrase “and up” appearing in this manual after the serial number implies that the related information is current for any machine serial number HIGHER than the serial number preceding the “and up”.

Tigercat reserves the right to make changes to the machine after this manual release date that may not immediately appear in this manual.

Every effort is made to send out updates on a regular basis. If the machine in question was built after the release date of this manual and there is a discrepancy, call Tigercat service department. The release date appears on the first page.

The Company reserves the right to change information contained herein at any time without prior notice.

Tigercat Industries Inc.

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Tigercat T726E Trencher

Introduction

S.A.E. STANDARDS ROLL-OVER PROTECTION STRUCTURES (ROPS) FALLING OBJECTS PROTECTION STRUCTURES (FOPS) OPERATOR PROTECTION STRUCTURES (OPS) * MODIFICATIONS AND REPAIRS: The integrity of the ROPS, FOPS, OPS structure and its continued ability to provide the level of protection it was designed for could be seriously affected by any modifications to the structure, its mounting or to the chassis to which it is attached.

Tigercat emphasizes that the certification of approval of the ROPS, FOPS, OPS structure will become void if any such modification(s) take place.

Tigercat may officially grant approval for modifications only by: i. Written approval of repairs or modifications signed by the Tigercat Engineering Manager; or ii. Approved modifications officially released by Tigercat.

Both of the above are provided that the work is carried out in the factory approved manner.

Unauthorized modifications and/or repairs made or contributed to by a customer or a Tigercat distributor may result in creating a dangerous situation and therefore the customer or Tigercat distributor will be considered to have assumed the risk involved or be negligent in creating this situation.

Tigercat will not be held responsible for situations arising from having created unauthorized modifications/changes to the structure.

Operator's cabs are designed to ROPS, FOPS, OPS standards so that they will withstand force and absorb energy during a roll-over (ROPS), when resisting the impact of a falling object (FOPS) and minimize the posibility of operator injury from penetrating objects (OPS). When a permanent deflection of the structure occurs, the structure can no longer provide the original designed level of protection and should be replaced. Attempts to straighten the structure, particularly by the application of heat, can reduce still further the structures remaining capability to protect.

The mounting and the frame or chassis to which the cab is attached is considered an integral part of the ROPS, FOPS, OPS and is included in the design, test and certification of the product.

Contact the Tigercat Service department before attempting any modifications or repair to roll-over protective structures.

Tigercat Industries Inc.

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Tigercat T726E Trencher

Introduction

NON-APPROVED FIELD PRODUCT CHANGES The installation of any unauthorized attachment or changes made of any kind to this Tigercat product could affect the product's ability to perform as originally intended. The product's integrity, stability and it's ability to perform safely could be at serious risk.

IT IS Tigercat POLICY THAT NO CHANGES ARE TO BE MADE TO ITS PRODUCTS INCLUDING DELETIONS OR ADDITIONS OTHER THAN A Tigercat APPROVED OPTION FITTED IN THE FACTORY APPROVED MANNER. Official approval to make changes or install options is only to be undertaken as follows: i) The relevant options for that product must be shown or listed on current Tigercat documentation or literature such as a printed specification sheet, price list, parts manual, or product literature issued by Tigercat. ii) Approved options or product changes authorized in writing by the Tigercat Engineering Manager.

AUTHORIZATION BY ANY OTHER PERSON IS UNACCEPTABLE. Unauthorized changes made or contributed to by a person or organization may result in creating a dangerous situation and therefore the person or organization will be considered to have assumed the risk involved or be negligent in having created this situation.

Weight is an important factor when considering the addition of options or an attachment, Refer to your Tigercat distributor for information on maximum permissible operating weight and the effect the addition of various options may have on your machine.

Tigercat will not be held responsible for any situation that may arise resulting from Non-approved Field Product Changes to its product.

Should Tigercat become involved in a dispute resulting from changes made to the product without proper authorization by Tigercat as stated above, Tigercat will take whatever action is appropriate to protect its interests.

The product warranty policy and the certification on any safety items installed on the modified product will become NULL and VOID if the above policy is not adhered to as specified.

Non-approved product changes also nullify warranties given to Tigercat by its component manufacturers.

Tigercat Industries Inc.

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Introduction

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Tigercat T726E Trencher SECTION 1 - SAFETY JUNE, 2010

Read and understand this safety section prior to operating any equipment.

Read and understand all manuals for any attachments or accessories.

CONTENTS - SECTION 1 BOOM LIFT LOCK ....................................................................................... 1.12 ENGINE ACCESS PANELS ......................................................................... 1.13 FELLING TREES ........................................................................................... 1.7 FIRE PREVENTION ..................................................................................... 1.19 DRY CHEMICAL CLEANUP PROCEDURES ........................................... 1.23 FIRE PREVENTION GUIDELINES ........................................................... 1.19 WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED .................. 1.22 WHAT TO DO TO PREPARE FOR A MACHINE FIRE ............................ 1.20 WHAT TO DO WHEN A MACHINE FIRE OCCURS ................................ 1.21 FLUID INJECTION INJURY ......................................................................... 1.14 GREASE INJECTION INJURY .................................................................... 1.15 LIGHTNING SAFETY AWARENESS LIGHTNING SAFETY ..................................................................... 1.16, 1.18 WHAT IS A LIGHTNING STRIKE? ........................................................... 1.16 PARKING THE MACHINE ............................................................................. 1.8 SAFETY INTERLOCK SWITCHES ON CAB DOORS ................................... 1.9 SAFETY LABELS ............................................................................... 1.24, 1.25 SAFETY PRECAUTIONS, GENERAL ........................................................... 1.2 SAFETY PRECAUTIONS, OPERATING ....................................................... 1.6 SAFETY PRECAUTIONS, SERVICING ............................................. 1.10, 1.17 SAFETY SYMBOLS ....................................................................................... 1.2 SIGNAL WORDS ........................................................................................... 1.2

Tigercat T726E Trencher

Safety

SAFETY SYMBOLS

GENERAL SAFETY PRECAUTIONS Remember that safety is a prime responsibility of all.

To minimize the risks and promote safety at all times, this section of the operator’s manual details a number of safety rules which should always be followed and obeyed.

This safety alert symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Always read the operator's manual before operating the machine. Pay close attention to WARNINGS and HAZARD identifications

The safety alert symbol identifies important safety messages on machines, safety signs, in manuals, or elsewhere. When you see this symbol, be alert to the possibility of personal injury or death.

Follow the instructions in the safety message.

Understanding Signal Words

DANGER DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Follow all instructions from safety inspector and supervisors.

You must be fully trained to operate this piece of equipment. Know the capabilities and the limitations of the equipment. Learn the most efficient operating techniques.

WARNING WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Do not let an untrained person operate the machine.

CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Use recommended protective clothing and safety devices such as orange safety vest, gloves, safety boots, safety hat, goggles, and ear protection when necessary. These safety rules highlight both general and specific measures the operator should be familiar with and adhere to. More specific measures are illustrated with pictograms which may also be attached to the machine in locations pertinent to their respective message. Keep safety labels in good condition. Repair or replace damaged labels.

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Tigercat T726E Trencher

Safety Use the handrails and steps provided when mounting and dismounting from the machine.

STAY CLEAR

Do not climb onto or jump off the machine at any time.

Do not try to climb onto or off a moving machine.

When approaching an operating machine on foot, stay well clear of the machine until the operator recognizes your presence. Make sure that the cutter has been shut down before advancing to the machine.

Do not use the joystick(s) or steering wheel as a handle to assist entering or leaving the cab.

Do not use the machine foot controls as a step.

DANGER ROTATING CUTTER The safety of persons outside the cab is the responsibility of the machine operator

When mounting or dismounting the machine always use the 3 point technique - Use 1 hand with 2 feet or 2 hands with 1 foot.

WARNING Wear a suitable hearing protective device such as earmuffs or earplugs to protect against noise.

Prolonged exposure to loud noise can cause impairment or loss of hearing.

It is not recommended to walk on machine surfaces that are not designated walking areas.

No attempt should be made to walk on angled steel surfaces or surfaces that are irregular in shape.

Walking surfaces on the machine must be covered with anti-slip materials to provide a safe foot hold and prevent slipping.

These anti-slip surfaces should be maintained on a regular basis. If the surface shows signs of wear, the anti-slip material must be replaced immediately.

WARNING Do not walk on machine surfaces with steel cleated foot wear. Steel cleats on steel surfaces are slippery and do not provide a safe foot hold.

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Tigercat T726E Trencher

Safety

GENERAL SAFETY PRECAUTIONS continued Avoid mounting or dismounting the machine in areas with slippery surfaces. Dry, deice, clean up or cover slippery surfaces with an anti-slip material before mounting or dismounting the machine.

Keep a first aid kit in an easily accessible location on the vehicle at all times.

Safety Hazards - Viton Seals O-rings and other seals manufactured of Viton material produce a highly corrosive acid when subjected to temperatures above. 600°f (315°c).

This contamination can have extreme consequences on human tissue since it is almost impossible to remove after contact.

Machines should be completely cleaned of debris at least daily, particularly around the engine exhaust components. Hydraulic oil leaks, excess grease, fuel and oil accumulation (including spillage) should be eliminated immediately.

The following procedures are recommended when inspecting equipment that has been subjected to high temperatures such as fire:

Maintain a clean cab interior, clear away trash or debris.

•

Visually inspect any seals or gaskets which have suffered from heat; they will appear black and sticky.

•

If these are found, Do Not Touch!!!

•

Determine the material composition of any seals or gaskets, If fluoro-elastomer seals (Viton, fluorel, or tecmoflon) have been used, the affected area must be decontaminated before undertaking further work. Natural rubber and nitrile materials are not hazardous.

•

Check windows for scratching, crazing and cloudiness that could impair clear visibility all round the machine.

Disposable heavy duty gloves (neoprene) must be worn and the affected area decontaminated by washing thoroughly with limewater (Calcium Hydroxide solution).

•

Do not operate the machine with any defective or inoperable components.

Any cloths, residue and gloves must be safely discarded after use.

NOTE:

Machine should be washed completely before and after every major service.

Inspect the machine daily for signs of damage or unusual wear, to ROPS, FOPS, OPS structures.

Check for fluid leaks, or faulty operation. Repair or replace malfunctioning parts and systems immediately.

Check windows and door guards for damage.

Check protective windows for cracks, a damaged window has reduced strength to stop flying objects.

Burning discarded items is not recommended except in an approved incineration process where the dangerous products are treated by alkaline scrubbing.

Check all fluid levels.

Do not operate the machine with any of the exhaust system, safety covers, or other devices removed.

1.4

Tigercat T726E Trencher

Safety WARNING WARNING

GENERAL SAFETY PRECAUTIONS continued

Engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Maintain a charged fire extinguisher on the vehicle at all times and KNOW HOW TO USE IT. Do not carry passengers either in the cab or anywhere else on the machine. The vehicle is provided and approved with seating for the operator only.

WARNING WARNING Battery posts, terminals and related accessories contain lead and lead compounds.

Wash hands after handling.

Do not allow anyone to operate the machine who may not be physically fit or who may be under the influence of alcohol or drugs.

When moving the machine, watch that enough clearance is available on both sides and above the machine or any of its attachments. Extra clearance may be required particularly where the ground is uneven.

Approach with extreme caution any area where overhanging electrical power lines are present.

Serious injury or death by electrocution can result if the machine or any of its attachments are not kept a safe distance from these lines.

Maintain a distance of 10 feet. (3 meters) between the machine or boom and any power line carrying up to 50,000 volts or less plus 1/2 inch (10 mm) for each additional 1,000 volts above the 50,000 volt level.

If State/Provincial, local or job site regulations require even greater safety distances than stated above, adhere strictly to these regulations for your own protection.

If the machine must be transported, make sure that it is adequately secured to the transporting vehicle.

Even though the brakes are fully engaged, block the wheels to prevent movement during transport.

Install the articulation lock bar when ever the machine is to be transported.

Comply with instructions in this manual and also your company’s regulations for the operation of this machine.

Read, understand and follow all general safety precautions specified by felling head manufacturer.

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Tigercat T726E Trencher

Safety Prior to commencing work, check all equipment controls to ensure that the machine responds correctly.

OPERATING SAFETY PRECAUTIONS

Make sure that all safety screens and guards are installed and properly secured.

Do not open the cab doors to increase ventilation when operating the machine.

Shut off engine when refuelling - DO NOT refuel the engine while smoking or near open flame or sparks.

Check that no other personnel have moved into a hazardous area before starting the machine.

Keep the cab doors closed and use seat belt when driving or steering the machine to prevent being thrown from the operator's cab.

Sound the machine horn before starting the machine.

The operator’s seat is equipped with either a lap belt or lap and shoulder harness belts. Use either of these restraint systems at all times when operating the machine.

Never use the parking brake to slow down or stop the machine except in an emergency.

Keep the brake properly adjusted at all times.

Always rest the attachment on the ground when operation is stopped, regardless if the engine is running or shut off.

Start the engine according to the instructions in this manual. Refer to OPERATING MACHINE in SECTION 2 of the OPERATOR'S MANUAL. Before moving the machine to the work site, check to ensure that all doors, panels, and access covers are installed properly and secured.

Trenching operations should only be performed from the operator's seat.

Secure loose items in the cab.

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Tigercat T726E Trencher

Safety

OPERATING SAFETY PRECAUTIONS continued

CAUTION Do not open cab doors or window screens when machine is on a slope. The doors and screens are heavy and could swing out with considerable force.

When working on slopes, travel straight up or down the slope to prevent roll-over.

NEVER travel across a STEEP slope or side hill:

When the engine is running, DO NOT allow anyone in areas of the machine where they may be crushed by moving components.

Boom supports encroach on cab door opening when machine is steered.

•

If you travel across a MODERATE slope, NEVER make an uphill turn as this could cause a tip-over situation.

•

To avoid tip over, keep the attachment as low as possible to maintain a low center of gravity.

•

Do not run engine when persons are on steps or in doorway area.

TRENCHING Debris from the ground and even teeth separating from the drum become potentially dangerous missiles when thrown from these machines.

•

Serious injury or death could result from crushing.

Inspect cutting teeth, tooth retaining bolts, drum and attachment assembly.

Ensure that all tooth retaining bolts are at correct torque value.

Replace all worn teeth or rotate worn teeth to align unused cutting tips.

Always replace tooth retaining bolts when replacing cutting teeth.

Shut down machine immediately if vibration occurs during cutting.

Maintain a safe operating distance between the machine and other personnel. Never operate the boom or attachment over the heads of bystanders.

Check that the discharge area is clear and undamaged.

Do not turn on cutting attachment until machine is at work site.

Never travel near co-workers or other pieces of equipment with cutting attachment turning.

Do not allow people or other pieces of equipment near the trenching operation.

Use only prearranged and approved signalling practices.

Operate the machine only from a seated position in the operator’s seat.

Watch for ground hazards such as metal debris or wire fencing.

When travelling position attachment and boom accordingly so as not to impair vision.

If vision is limited by dust, smoke, fog, rain or snow, stop the machine until visibility is restored.

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Tigercat T726E Trencher

Safety When travelling on public roads, use accessory lights (when installed) and other cautionary devices to provide operators of other vehicles warning of your approach. Ensure your machine meets all regulatory requirements.

OPERATING SAFETY PRECAUTIONS continued Before leaving operator's cab, apply the parking brake and lower the felling attachment onto the ground.

When transporting the machine watch that enough clearance is available on both sides and above the machine or any of its attachments to avoid contact with power or telephone lines, bridge structures, etc.

If out of the operator's cab for an extended period shut the machine off.

When parking the machine: •

Park on level ground.

•

Do not park on a hillside or incline.

•

Lower attachment onto level ground.

•

Engage the parking brake.

•

Stop the engine and release pilot system pressure by performing the following steps:

Before transporting the machine check to ensure that all doors, panels and access covers are installed properly and secured.

1. Close both doors. Turn key switch to ON position. Do not start the engine. Press pilot reset switch.

2. Fully apply brake foot pedal 50 times or more.

3. Pressure may remain in the system after completing the above steps. Use caution when loosening hydraulic connections.

For additional information, refer to RELEASE PILOT SYSTEM PRESSURE in SECTION 5 of the SERVICE MANUAL.

724E-017

•

24863A

Turn the battery disconnect switch off if the vehicle is to be parked for an extended period of time (Example - overnight).

NOTE: Wait for 30 seconds after turning key switch off before turning the battery disconnect switch off. The engine ECM requires time after the engine is turned off to record the engine data and log the information for the current operating session.

If the battery disconnect is turned off too soon, the data will not be recorded and an error message will be displayed when the battery power is turned back on and the key switch is turned on.

1.8

Tigercat T726E Trencher

Safety

OPERATING SAFETY PRECAUTIONS continued SWITCH

• • ACTUATOR

INTERLOCK SWITCH (L.H. DOOR SHOWN)

197-5

SAFETY INTERLOCK SWITCHES ON DOORS: Both doors are equipped with safety interlock switches to prevent the machine from being operated while either of the doors are open (pilot system is shut off).

CAUTION Safety interlock switches DO NOT lock out the steering function on machines equipped with a steering wheel.

CAUTION DO NOT use the steering joystick to assist entering or leaving the cab.

NOTE: The engine can be started but the machine functions cannot be operated with a door open.

To operate: Close both doors and press the PILOT RESET switch.

CAUTION All functions on the machine can now be operated, either as intended or by accidentally touching them.

Once the safety interlock system has been activated, the safety of both the operator and all persons outside the cab becomes the responsibility of the operator.

The door safety interlock switches and the pilot reset switch are a safety feature and their function must not be defeated in any way.

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Tigercat T726E Trencher

SERVICING SAFETY PRECAUTIONS

Safety Prior to welding on any part of the machine, it should be cleaned and a fire extinguisher should be made available at the welding location. Care must be taken in attaching the welding machine grounding clamp so electrical current does not pass through bearings, especially the center joint bearing.

This machine is equipped with sensitive electronic control equipment, prior to welding:-

Conduct maintenance inspections at least as frequently as recommended in SECTION 3 of the OPERATOR'S MANUAL. When servicing or repairing equipment, shut the engine down, and disconnect the positive (+) battery cable from both batteries.

Install a “DO NOT START ENGINE” sign on the operator’s cab door and in the engine compartment when making repairs to the machine.

724E-017

24863A

Turn Battery Disconnect Switch to the OFF position and disconnect the positive (+) battery cable from both batteries.

DISCONNECT THE TWO MULTI-PIN PLUGS FROM THE ENGINE CPU

•• Before performing maintenance or repair work on any equipment, consult the manufacturer’s instruction manual and follow recommended procedures.

The radiator and the engine cooling system should be cleaned and serviced at least daily to maintain moderate engine temperatures.

••

726E-001

Disconnect the engine CPU (Central Processing Unit) and engine wiring harness by unplugging the multi-pin connectors.

WARNING DISCONNECT MULTI PIN CONNECTOR

This machine is equipped with a reversible cooling fan. Exercise care when working in this area with the engine running.

••

This machine is equipped with a reversible cooling fan to facilitate cleaning of the charge air cooler, radiator and oil cooler assembly. Exercise care when working in this area with the engine running.

If the fan switch in the cab is in the AUTO position, the fan could turn ON and/or go into REVERSE mode without warning.

726ET-066

DISCONNECT PLUS 1 CONNECTORS

Disconnect the Plus 1 Controller by unplugging the multi-pin connector.

1.10

Tigercat T726E Trencher

Safety Shut off engine. Only remove filler cap when cool enough to touch with bare hands. Slowly loosen cap to first stop to relieve pressure before removing completely.

SERVICING SAFETY PRECAUTIONS continued WARNING Diesel fuel or hydraulic fluid under pressure can penetrate the skin and cause serious personal injury, blindness, or death. If any fluid is injected into the skin, it must be surgically removed within a few hours by a doctor familiar with treating this type of injury.

Do not change any pressure or relief setting unless authorized instruction has been obtained.

Use the proper tool for the job. Repair or replace worn or damaged tools including lifting equipment immediately.

Never use bare hand to check for fluid leaks.

Fluid leaks under pressure may not be visible.

When searching for leaks, wear work gloves and use a wrench or piece of wood to move hydraulic hoses. Do not grab hold of hydraulic hoses. Wear safety goggles for eye protection.

Pressure can be maintained in a hydraulic system long after the power source and pump have been shut down. Lower the felling head to the ground, stop engine and relieve trapped pressure from pilot system and brake accumulators before performing work on components, or disconnecting any hoses.

For the procedure on how to RELIEVE PRESSURE, refer to PARKING THE MACHINE in THIS SECTION.

Explosive release of fluids from pressurized cooling system can cause serious burns.

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Tigercat T726E Trencher

Safety

SERVICING SAFETY PRECAUTIONS continued

WARNING

Keep your hands, feet, head, and loose clothing away from power driven parts. Tie long hair behind your head. Remove rings and other jewelry to prevent electrical shorts and entanglement in moving parts.

Always install boom lift lock before working on or around machine with boom raised.

• Always install 'T' handle retainer bolt • Use only to support boom and cutting head • Do not use to set hydraulics pressures

CAUTION Always be aware of machine pinch points that could cause injury. Never place body parts within the range of motion of the working parts of the machine.

Do not open cab doors or window screens when machine is on a slope. The doors and screens are heavy and could swing out with considerable force.

REAR CHASSIS

FRONT CHASSIS

•

WARNING Failure to follow all of the above instructions could result in serious injury or death from crushing.

•

RETAINING PIN

•

•• LYNCH PIN

• 726D-039

LOCK BAR

LOCK BAR IN LOCKED POSITION

To prevent accidental articulation of the machine and injury when working in the center joint area, install the frame articulation lock bar between the frames and hold in place with the lynch pins provided.

Never stand under an object supported with hydraulics. Always use safety stands or a locking device.

WARNING DO NOT work below or behind a machine that is parked on a grade.

WARNING Always allow the saw blade to come to a COMPLETE STOP before approaching saw head to make adjustments.

1.12

Tigercat T726E Trencher

Safety

SERVICING SAFETY PRECAUTIONS continued CAUTION The lower access panels are NOT HINGED or permanently attached to the machine, but are held in place by the UPPER DOORS. Therefore they can fall during the process of removing them from the machine. Once the UPPER DOOR is opened the LOWER PANEL is not fully supported and it is not safe to apply any weight or pressure to the panel, as it may fall out of the remaining supports. Do not use these LOWER PANELS as hand grips, when servicing the machine.

R.H. SIDE ACCESS PANELS

••

••

R.H. ENGINE ACCESS PANELS

726-002

HAND KNOB

L.H. SIDE ACCESS PANELS

• •

Compartment door and panel handles should be hand tight only at all times for easy access to the engine compartment and the pressurized water system in the event of a fire or other emergency. Refer also to FIRE PREVENTION in THIS SECTION.

HAND KNOB

•

•

20231A R1

If the engine is running inside a building, ensure that sufficient ventilation is available to prevent a buildup of toxic exhaust fumes. Run the engine only when it is necessary for testing or adjustments.

Work in a ventilated area. If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove toxic exhaust fumes.

If you don't have an exhaust pipe extension, either work outside, or open the shop doors.

•

•

Dispose of fluids properly.

726-001

L.H. ENGINE ACCESS PANELS

Do not pour fluids into the ground, stream, pond or lake.

Before draining any fluids, know the proper way to dispose of them.

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Tigercat T726E Trencher

Safety

SERVICING SAFETY PRECAUTIONS continued

WARNING Diesel fuel or hydraulic fluid under pressure can penetrate the skin and could result in death or serious injury. If any fluid is injected under the skin, a medical doctor familiar with the treatment of this type of injury must surgically remove it within a few hours.

FLUID INJECTION INJURY Hydraulic and diesel fuel systems on forestry machines operate at very high pressures, often 207 bar (3000 psi) and above. If a loose connection or a defect in a hose should occur, a fine, high velocity stream of fluid will result. Even for systems pressurized to as little as 7 bar (100 psi), this fluid stream can penetrate human skin as if it were a hypodermic needle.

Initially, an accidental fluid injection beneath the skin may only produce a slight stinging sensation.

There is a danger that you will tend to ignore this, thinking that it will get better with time. Most often, it does not! Within a very short time the wound may begin to throb painfully, indicating that tissue damage has already begun.

Similarly fluid injected directly into a blood vessel can spread rapidly through your circulatory system. The human body has little ability to purge injected fluid.

Diesel fuel or hydraulic fluid under pressure can penetrate the skin and could result in death or serious injury. If any fluid is injected under the skin, a medical doctor familiar with the treatment of this type of injury must surgically remove it within a few hours.

Time becomes critical as tissue damage progresses rapidly. The longer you delay getting professional medical attention, the more damage can occur.

Although fluid injection accidents are rare, the resulting injury has on occasion required the amputation of a finger, a hand or in some cases the entire limb. The longer the delay in getting professional medical aid, the further up the limb the tissue damage can spread. An injury of this type can become very serious or even fatal if not dealt with promptly and properly.

In the event of any suspected fluid injection injury • Report the injury to your supervisor immediately.

• Seek professional medical attention immediately.

As always the best defence against suffering the effects of fluid injection is to prevent the accident from occurring in the first place.

When searching for possible fluid leaks • Never search for leaks with your bare hands.

Always wear thick protective gloves.

• Be sure to wear safety goggles for eye protection.

• Keep all body parts well away from the area being investigated for leaks.

• Use the end of a long piece of wood to move hoses or other obstacles.

•

Place the end of a long piece of wood in the suspected path of any fluid stream. Never use any part of your body.

• Recognize that the source of the leak and the fluid streaming from it may be very small and not easily visible. You may only be able to see the fluid that accumulates as a result of the fluid stream.

When performing any service work • Stop the engine and relieve all diesel fuel or hydraulic pressure before disconnecting any lines or otherwise working on the system.

• Never grab any hydraulic or diesel fuel connectors or hoses when they are subjected to pressure.

• Always ensure that hoses are rated for the pressures to which they will be subjected.

• Never use any hoses that you suspect could be defective.

1.14

Tigercat T726E Trencher

Safety

SERVICING SAFETY PRECAUTIONS continued GREASE INJECTION INJURY WHEN USING PNEUMATIC GREASE GUNS Pneumatic grease guns can deliver grease at pressures from 17 - 400 Bar (246 - 5801 psi). It takes less than 7 Bar (100 psi) to inject a substance through human skin.

ALWAYS get professional medical treatment immediately after any type of injection injury.

Provide the physician with information on the type of grease, the pressure setting of the gun, and similar details.

The amount of fluid injected, type of fluid (or material), pressure at which it was injected, and the elapsed time between injection and surgery all influence the chances of successful treatment for this type of serious injury.

Prior to using a high pressure pneumatic grease gun perform the following: •

All operators of high pressure pneumatic grease guns MUST be trained in the hazards of its operations and the treatment for such injuries.

•

DO NOT OPERATE a high pressure pneumatic grease gun unless you have been trained in the proper operation and are aware of all safety precautions of such a tool.

•

Wear protective clothing such as gloves, safety hat and safety glasses.

•

Inspect all parts of the grease gun for wear and tear and replace all worn or damaged parts.

•

Ensure that protective shrouds are installed on all grease gun nozzles as safety devices.

•

Remove dirt and grease from grease fittings prior to greasing.

•

Replace any defective grease fittings on equipment with new fittings immediately.

•

When badly positioned fittings are identified, replace them with angled or swivel fittings for easier access.

1.15

Tigercat T726E Trencher

LIGHTNING SAFETY AWARENESS WHAT IS A LIGHTNING STRIKE? Lightning is a discharge of the electricity produced by a thunderstorm. As the thunderstorm develops, many small particles of ice within the storm clouds bump together. These collisions create a positive charge at the top of a cloud and a negative charge at the bottom. As this continues a second positive charge builds up on the ground beneath the cloud, concentrated around high objects such as hills, trees, buildings, equipment and even people.

When the difference between the electrical charge in the cloud and on the ground becomes great enough to overcome the resistance of the insulating air between them, an electrical current flows instantly. This is a lightning strike.

The electrical potential in a lightning strike can be as much as 100 million volts. Lightning strikes can occur over very large distances, even as much as 60 km (37 miles). Lightning travels both in front of and behind a thunderstorm and so strikes happen even when rain has not started or has stopped. Lightning can hit in the same place, many times and often spreads out over 18 m (60 feet) within the soil around the strike point.

Thunder always accompanies lightning. When lightning occurs, the air through which it travels is instantaneously heated to a temperature more than 28,000°C (50,000°F). The air expands rapidly due to this heating, then quickly contracts as it cools. It is this contracting shock wave that we hear as thunder.

In many areas of the world, lightning strikes are second only to flooding as the greatest cause of storm related deaths and injuries. Although only 10% of lightning strike victims are killed, virtually all from cardiac or respiratory arrest, over 70% of those that survive suffer severe, life-long injury and disability. The symptoms of a lightning strike include memory loss, fatigue, chronic pain, dizziness, sleeping difficulty and the inability to complete several tasks at one time.

Safety LIGHTNING SAFETY In spite of the popular myth that being struck by lightning is an unlikely event, the facts show that lightning strikes occur frequently. As a result loggers are at high risk because their work is outdoors and close to known strike points such as tall trees and heavy equipment.

Loggers can increase their chances of avoiding a lightning strike by following a few simple safety practices.

1. Designate a member of your crew to

•

Monitor daily weather forecasts

•

Observe local weather conditions

•

Alert all other members of the crew when a possible lightning threat develops.

2. Don’t start or continue any work that cannot be stopped immediately, when a storm moves nearby.

3. Anticipate a high-risk situation and take action early by moving to a low-risk location. Do not hesitate. If there is lightning, you are in danger.

4. Obey the rule - If you see lightning, Flee. If you hear thunder, Clear.

5. Do not follow the now obsolete guideline to take shelter when the time between seeing lightning and hearing thunder is 30 seconds or less. This does not provide sufficient time to ensure safety. Always follow step 4.

6. Remain in your safe location for 30 minutes after the last sight of lightning or the last sound of thunder.

The safest location during lightning activity is inside a fully enclosed, substantially constructed building, a house, office, school, shopping area, etc. These are the safest because of the electrical wiring and plumbing that they contain. Should lightning strike, the electrical current will travel through the wiring or plumbing into the ground.

When such a building is nearby, always seek shelter there first.

1.16

Tigercat T726E Trencher LIGHTNING SAFETY AWARENESS continued Unfortunately loggers do not often work close to buildings and therefore other alternatives need to be considered.

Sheds, weather shelters, hunting blinds, tents and other partially open or small structures are not safe against lightning strikes as they lack the electrically grounded components of larger buildings. They are intended for sun or rain protection only. Do not seek shelter from lightning strikes inside these structures.

The second safest location during lightning activity is inside a fully enclosed car, van, truck or bus with a metal roof and metal sides. The electrical energy of a lightning strike to these vehicles is carried to ground by the conducting outer metal surfaces. This is called the skin effect.

Safety WHAT TO DO IF YOU ARE OUTSIDE AND SEE LIGHTNING OR HEAR THUNDER. If you can, get inside.

1. Run to the nearest building, motor vehicle or fully enclosed ROPS equipment cab immediately. Being anywhere outside is not safe.

2. If inside a building: •

Don’t watch the lightning storm from open windows or doorways. Stay in inner rooms.

•

Stay well away from corded telephones, electrical appliances, lighting fixtures, radio microphones, electrical sockets and plumbing pipes and fixtures.

3. If inside a motor vehicle or fully enclosed ROPS equipment cab: •

Under no circumstances whatsoever step outside of the vehicle or off the equipment to move to another shelter. Very dangerous electrical pathways to ground may go through you.

•

Shut down all operation, turn off the engine, close all doors and raise all windows.

•

Sit squarely in the seat with your hands in your lap and your feet flat on the floor mat.

However machines with a rollover canopy only are not safe against lightning strikes as they are open to electrically conductive rainwater and do not benefit from the skin effect. Operators of this equipment must abandon their machines and get to a safer location before lightning strikes.

•

Do not touch any metallic objects referenced to the outside of the vehicle.

Do not touch any door and window handles, control levers, foot pedals, steering wheels, cab interior walls and any other inside to outside metal objects.

Note that the rubber tires on motor vehicles and heavy equipment do not increase safety from lightning strikes. Lightning has already travelled a great distance through the air to strike the vehicle.

In comparison a few inches of rubber in a tire offers absolutely no additional insulation.

•

Do not touch any radio or telephone connected to an outside antenna.

Do not seek safety from lightning strikes in vehicles with fiberglass or plastic body shells or in convertible top vehicles. None of these are safe, as they do not offer skin effect lightning protection.

Heavy forestry equipment such as a skidder, loader, feller buncher, forwarder, etc. with a fully enclosed rollover protective structure (ROPS) cab take advantage of the skin effect and are therefore safe in electrical storms.

1.17

Tigercat T726E Trencher

Safety

LIGHTNING SAFETY AWARENESS continued

What to do if you feel your skin tingling, your hair stands on end, light metal objects vibrate or you hear a crackling sound.

If you are caught outside and have no where else to go.

1. Lightning is probably about to strike. You only have a few seconds to act.

1. Avoid wide-open areas where you project above the surrounding landscape.

2. Put your feet together. Crouch down like in a baseball catcher’s position. Hold your head down. Cover your ears to protect them against the noise of the thunder.

2. Seek shelter in a low place, such as a ditch, ravine, valley, canyon or cave.

3. Get away from open water such as ponds or streams.

4. Do not take shelter under any isolated tall trees or small groups of trees.

5. Seek shelter amongst the dense, thick growth of the shortest trees.

3. Do not lie flat on the ground. By touching as little of the ground as possible, the lightning may not move across the ground to you.

What to do if a co-worker has been struck by lightning.

6. Avoid entering any small enclosures or shelters.

1. The victim does not carry any electrical charge. There is no danger to anyone helping this person. You can touch him or her immediately.

7. Do not seek shelter under any motor vehicle or heavy equipment.

2. Call your local emergency response telephone number immediately.

8. Keep clear of any materials that can conduct electricity such as wire fences and gates, metal pipes, poles, rails and tools.

3. If the victim has no pulse, their heart has stopped or they have stopped breathing, start cardiopulmonary resuscitation (CPR) or mouth –to-mouth resuscitation immediately.

Use a portable defibrillator if one is available.

9. Stay at least 15m (50 feet) away from metal objects such as a fuel tank, a vehicle or machinery without a cab, motorcycle, ATV, etc.

10. Stay at least 5m (16 feet) apart from any other members of a group so that lightning won’t travel between you.

11. Do not use the telephone except for emergencies.

4. Be careful about staying in the storm to take care of the victim. You can get hit by lightning too. If you can, move the victim to a building as soon as possible.

To further increase your awareness about lightning safety, see the following web sites.

National Weather Service Lightning Safety http://www.lightningsafety.noaa.gov National Lightning Safety Institute http://www.lightningsafety.com

1.18

Tigercat T726E Trencher

Safety 4. Clean out all accumulated forest debris (twigs, pine needles, branches, bark, leaves, saw dust, small wood chips) and any other combustible materials from inside the machine belly pans or lower machine structures as well as from areas in proximity to the engine, fuel and hydraulic oil systems no less frequently than at the completion of each work shift.

FIRE PREVENTION

When working in a forest environment, it is impossible to prevent combustible debris from collecting in tight corners of the machine. This debris, in itself, may cause a fire; however, when mixed with fuel, oil or grease in a hot or confined place, the danger of fire is greatly increased.

The following fire prevention guidelines should be used to supplement the operator’s fire prevention efforts. In no case should the guidelines be used, or assumed, as replacements for diligent operator efforts at preventing fires.

The following guidelines will help to keep your equipment up and running efficiently and keep the risk of fire to a minimum.

1. Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT. 2. Remove debris and blow out dust regularly from the air intake doors, engine radiator and charge air cooler, hydraulic oil cooler, diesel fuel cooler and air conditioning condenser core to prevent overheating of the engine and hydraulics and to maintain efficient operation of the machine. Refer to CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR in SECTION 2 of the OPERATOR’S MANUAL. 3. Blow off all forest debris and fine organic material accumulated near hot engine exhaust components (turbocharger and exhaust manifold as well as exhaust pipes and muffler) at the completion of each work shift or more frequently when working in logging conditions where large amounts of combustible forest debris are present. Visual inspection after blow off to ensure thorough cleanliness is vital. Engine exhaust systems provide numerous small pockets where saw dust, small wood chips and other flammable forest debris can gather. Even small accumulations close to hot exhaust components can ignite and smolder. If dislodged this smoldering debris can fall into other areas of the machine and thereby spread a fire.

5. Inspect the machine regularly for any signs of diesel fuel or hydraulic system leakage.

Check for worn or eroded fuel or hydraulic lines before starting up any equipment.

6. Clean up any grease, diesel fuel, hydraulic and lubricating oil accumulation and spillage immediately.

7. Steam clean the engine, hydraulic pumps, transmission, brake, fuel and hydraulic tank compartments and all machine belly pans at least once a month or more frequently when working in logging conditions where large amounts of combustible forest debris are present.

8. Use only nonflammable solutions for cleaning the machine and components.

9. Inspect the exhaust system daily for any signs of leakage. Check for worn, cracked, broken or damaged pipes or muffler. Also check for missing or damaged bolts or clamps. Should any exhaust leaks or defective parts be found, repairs must be made immediately. Engine exhaust leaks can cause fires. Do not operate the machine until the exhaust leak is repaired.

10. During daily operation of the machine, the occurrence of exhaust leaks are usually accompanied by a change or increase in engine exhaust noise levels. These audible warnings cannot be ignored. Should any exhaust leaks occur during operation, the machine must be shut down immediately and not put back to work until the necessary repairs have been completed.

11. Park the machine at least 50 feet away from other equipment at the end of each shift.

12. Never leave the machine parked with boom, arch or blade suspended off the ground. Should their supporting hydraulic hoses burn through during a fire, pressurized hydraulic oil may be injected into the fire and the boom, arch or blade will fall rapidly to the ground.

1.19

Tigercat T726E Trencher FIRE PREVENTION continued 13. Turn the battery disconnect switch to OFF at shut down to de-energize all electrical circuits.

14. Remain with the machine for at least 45 minutes at the end of operations while the machine cools.

Safety 17. AFTER transporting (trucking) a machine from one job site to the next, open all doors and access panels and blow off any debris that may have repositioned itself onto the engine and exhaust parts due to wind turbulence caused by the journey.

18. Before starting repair work, such as welding, the surrounding area should be cleaned and a fire extinguisher should be close by.

19. Store rags and other combustible materials in a safe, fireproof location.

20. Do not use the machine on top of or to push piles of burning timber. A machine fire will most probably result.

EQUIPMENT FIRES ADVERSELY EFFECT YOUR ABILITY TO LOG, MAY INCREASE YOUR INSURANCE PREMIUMS DRAMATICALLY OR PREVENT YOU FROM OBTAINING INSURANCE COVERAGE AT ALL.

WHAT TO DO TO PREPARE FOR A MACHINE FIRE •

Prevent the fire from happening in the first place by ensuring that all machine systems are frequently inspected and always well maintained.

•

Ensure that any hand held fire extinguishers are charged and in working order. Fire extinguishers require routine care. Follow the manufacturer’s instructions for inspection and maintenance shown on the label of the fire extinguisher and in the extinguisher manufacturer's manual.

•

Ensure that any pressurized water systems on the machine (if applicable) are charged and in working order. Refer to PRESSURIZED WATER SYSTEM MAINTENANCE in SECTION 3 of the OPERATOR’S MANUAL.

•

Ensure that you have the proper fire extinguishers on site. Most fires involving mobile forestry equipment will be Class A or B. Dry chemical extinguishers should be rated ABC and pressurized water extinguishers should be rated A.

15. Remove all keys, lock equipment and fuel cap at the end of operations to reduce the risk of vandalism.

Class A fires involve ordinary combustibles such as wood, cloth, paper, rubber and many plastics, Class B fires occur with flammable liquids such as diesel fuel, oil and grease and Class C fires apply to energized electrical equipment.

16. Be cautious when smoking. An open flame, a lighted cigarette, etc., should not be permitted around any vehicle, especially during fuelling operations or when the fuel system is open to the atmosphere or when servicing batteries.

1.20

Tigercat T726E Trencher FIRE PREVENTION continued •

•

•

•

•

•

•

Ensure that the nozzle of any hand held extinguisher and pressurized water system available on the machine and at the work site fits within the fire extinguisher access holes in the doors of the machine.

Ensure that your fire detection system* is in working order. Refer to FIRE DETECTION SYSTEM in SECTION 2 of the OPERATOR’S MANUAL. Ensure that your fire suppression system** is charged and in working order. Refer to FIRE SUPPRESSION SYSTEM in SECTION 2 of the OPERATOR’S MANUAL. Ensure that you are familiar with the recommended procedures for fire contained in the emergency action plan of your company.

Ensure that you follow all national, state / provincial and local regulations dealing with fire fighting in effect in your specific geographic region. Regulations will vary from region to region but most will usually require that: 1. Workers assigned to fire fighting duties must be physically capable of performing them safely and effectively.

2. Workers designated to use fire fighting equipment as part of an emergency action plan must receive full and proper training from a qualified instructor.

3. Whenever portable fire extinguishers are provided for use in the workplace, training must be provided to familiarize workers with the general principles of fire extinguisher use and the hazards involved with fire fighting.

4. Training must be provided upon initial employment and at least annually thereafter.

Ensure that after you have received the training as outlined above, that you know how to use the fire extinguisher, the pressurized water system (if applicable) and the fire

Safety WHAT TO DO WHEN A MACHINE FIRE OCCURS •

If operating the machine when a fire occurs: 1. Lower all working attachments to the ground.

2. Shut the engine off.

3. Activate the fire suppression system**.

4. Radio or call for help. Be certain to report a fire immediately.

5. Exit the machine taking fire extinguisher and pressurized water system hose (if applicable) with you.

6. At all times ensure your own personal safety and the safety of anyone that may be in the area. Approach any fire with extreme caution. All fires can be very dangerous and life threatening.

7. Only if you can safely do so, turn OFF the battery disconnect switch.

•

Before deciding to fight the fire, be certain that: 1. The fire is small and not rapidly spreading.

2. There is always a clear, safe escape route to your back.

3. You have received training in the use of the available fire extinguishing systems and are confident that you can operate them effectively.

4. If in any doubt about whether or not to fight the fire – DON’T. Instead stand well clear of the fire and wait for help to arrive.

5. Be aware that engine coolant , diesel fuel or hydraulic hoses could fail during a fire. If this happens, hot coolant, fuel or oil could possibly be ignited by the fire.

6. If possible a dry chemical fire extinguisher or fire suppression system** should be used first to fight a machine fire. Then immediately afterwards use the pressurized water hose supplied with the machine (if applicable) or a pressurized water extinguisher (if available). A fire suppressed by dry chemical may re-ignite from the heat retained by any debris or hot machine components in the area. The water will cool the area, reducing the chances of re-ignition.

suppression system** on your machine.

There is not enough time available to read instructions during a fire emergency.

Ensure that all information necessary for you to immediately contact all sources of help (local fire department, etc) in the event of a fire emergency is recorded and readily available at all times.

1.21

Tigercat T726E Trencher FIRE PREVENTION continued •

Safety WHAT TO DO AFTER A MACHINE FIRE HAS OCCURRED •

1. Ensure that the cause of the fire is determined and all appropriate repairs are completed.

Use the PASS method. This is the most effective use of a fire extinguisher.

•

Pull the pin at the top of the extinguisher that keeps the handle from being pressed.

Break the plastic seal as the pin is pulled.

•

Aim the nozzle at the base of the fire. Do not aim the nozzle at the flames. In order to put out the fire, you must extinguish the fuel, not the flames. Hose nozzles are often clipped to the extinguisher body.

Release the hose before taking aim.

•

•

Squeeze the handle to release the pressurized extinguishing agent. The handle can be released at any time to stop the discharge.

Sweep from side to side at the base of the fire until the fire is completely out or the fire extinguisher is empty

Before returning the machine to work.

2. Ensure that the fire detection system* or the fire suppression system** is properly serviced and in working order (if applicable).

3. Ensure that all extinguishers used in fighting the fire are replaced or recharged.

•

Notify your equipment dealer and / or Tigercat Industries Inc. by completing an incident report, Tigercat form number 5101.

*NOTE: Fire detection systems are offered by Tigercat as an optional installation on some Tigercat product lines. Please disregard any references made to fire detection systems if not installed on your machine.

**NOTE: Dry chemical fire suppression systems are offered by Tigercat as an optional installation on some Tigercat product lines. Please disregard any references made to fire suppression systems if not installed on your machine.

20229A

•

• •

•

•

TYPICAL FIRE EXTINGUISHER ACCESS HOLE

Place the nozzle of the fire extinguisher into the appropriate fire extinguisher access hole and discharge the extinguisher.

Only if you can safely do so, open the access panels to the machine in the area of the fire.

Failing all attempts to access the machine compartment, discharge the extinguisher through the mesh or any available openings on the machine.

Ensure that the machine and all components have cooled down sufficiently after a fire so that re-ignition does not occur.

Remain with the machine until help arrives.

1.22

Tigercat T726E Trencher DRY CHEMICAL CLEANUP PROCEDURES Both ABC dry chemical fire extinguishers and fire suppression systems discharge a chemical powder to extinguish the fire. The chemical makeup and the small particle size of the powder as well as the force of the discharge all contribute to the fire fighting capability. These same characteristics also permit the powder to penetrate into and fully cover all components in the vicinity of the discharge.

Safety 3. In areas exposed to heat during the fire, the dry chemical powder will melt forming a coating that cakes or crusts on all surfaces.

To break down the caked dry chemical, spray or wash these areas with a 50/50 mixture of hot water and isopropyl alcohol. Allow this mixture to stand in place for several minutes.

The caked dry chemical when exposed to moisture is also mildly acidic. Therefore when the break down procedure has been completed, follow this immediately with the neutralizing procedure as described in step 2.

The following are recommendations for the cleanup and neutralizing of areas exposed to dry chemical powder.

Workers performing this work should wear protective clothing, safety goggles and a fine particle dust mask to minimize their personal exposure to the dry chemical powder.

Ensure that all electrical systems have been completely de-energized prior to any cleanup.

1. In areas of the machine that remained cool and dry during the fire, the dry chemical will stay in powder form.

Be certain to clean these areas immediately to prevent any settled residual powder from coming into contact with moisture whether through direct contact or humidity in the air.

Remove the powder residue by blowing off with air, sweeping, dusting or vacuuming using a HEPA filter capable of trapping the small dry chemical particles. Then wipe all surfaces with a damp cloth.

2. In areas exposed to moisture, the dry chemical powder will combine with water to form a paste that is mildly acidic. Note that all surfaces covered by this dry chemical paste including electrical contacts are vulnerable to corrosive attack.

To neutralize the acidic paste on large surfaces, spray or wash these areas with a mixture of 3 parts hot water to 1 part baking soda. Allow this mixture to stand for several minutes before rinsing with warm water.

Wash the area with a mild soap and water solution. Rinse thoroughly with water. Blowdry to remove all residual water.

Cleaning of electrical contacts should be done using an electrical contact cleaner that has no flash or fire point and is non-corrosive and non-conductive such as CRC Contact Cleaner 2000.

1.23

Tigercat T726E Trencher

Safety FIRE PREVENTION!

SAFETY LABELS SAFETY LABELS CAB LABEL

OPERATOR'S MANUAL LOCATION This label indicates the storage location of the operator's manual.This label is located on the outside of the operator's manual case inside the cab.

This label advises operator's of the following: READ UNDERSTAND AND FOLLOW THE FIRE PREVENTION GUIDELINES IN THIS MANUAL. These guidelines provide all the necessary action required to preventing fires on this machine. DO NOT OPERATE THIS MACHINE until you have read these instructions and have performed any necessary maintenance required that will prevent the potential of a fire from starting on this machine.

It is also important to note that fire prevention inspections and maintenance MUST BE PERFORMED FREQUENTLY (several times per day). A clean combustible free machine as well as frequent inspections of the exhaust components, hydraulic hoses and electrical cables and performing any necessary repairs immediately will help prevent fires.

Maintain a CHARGED fire extinguisher on the machine at all times, know where it is and KNOW HOW TO USE IT!

1.24

Tigercat T726E Trencher

Safety FIRE EXTINGUISHER ACCESS HOLE

SAFETY LABELS CHECK DAILY

CHECK DAILY FOR

This label indicates the location of each FIRE EXTINGUISHER ACCESS HOLE. The label is installed on each fire extinguisher hole on the engine hood.

DEBRIS LEAKS DAMAGED WIRES/HOSES WORKING FIRE FIGHTING DEVICES Presented by T.E.A.M. Working Group

21907A R1

This label is installed in the cab. In addition to the previous label it is a reminder to check the machine daily for the possibility of debris build-up, leaks, damaged wires and hoses and take the necessary action required to clean up any debris accumulation, repair any leaks, damaged wires or hoses.

The label also advises to check and ensure that all fire fighting devices are in good working order.

SAFETY LABELS

1.25

Tigercat T726E Trencher

Safety

1.26

Tigercat T726E Trencher SECTION 2 - CONTROLS AND OPERATION CONTENTS - SECTION 2

JUNE, 2010

AIR CLEANER, ENGINE AIR ........................................................................................................ 2.32 AIR CLEANER UNLOADER VALVE .............................................................................................. 2.32 AIR CONDITIONER/HEATER ........................................................................................................ 2.14 AIR VENTS .................................................................................................................................... 2.14 ARTICULATION LOCK BAR .......................................................................................................... 2.50 AUXILIARY POWER OUTLET ....................................................................................................... 2.28 BATTERY COMPARTMENT .......................................................................................................... 2.54 BATTERY DISCONNECT SWITCH ..................................................................................... 2.29, 2.54 BOOM CYLINDER LOCK .............................................................................................................. 2.51 BOOM LIFT LOCK ......................................................................................................................... 2.50 BRAKE FOOT PEDAL ..................................................................................................................... 2.9 BRAKES ........................................................................................................................................... 2.9 BULB TEST - SWITCH .................................................................................................................. 2.25 CAB CONTROLS QUICK REFERENCE ......................................................................................... 2.5 CARE OF THE MACHINE .............................................................................................................. 2.44 CARE OF POLYCARBONATE WINDOWS .............................................................................. 2.45

CAUTIONS .................................................................................................................... 2.46 CLEANING INSTRUCTIONS ......................................................................................... 2.46 CONCEALING HAIRLINE SCRATCHES ....................................................................... 2.46 FIRE PRECAUTIONS .................................................................................................... 2.47 GRAFFITI REMOVAL .................................................................................................... 2.47 INSPECTION AND MAINTENANCE .............................................................................. 2.45 RESISTANCE TO CHEMICALS ..................................................................................... 2.45 RESISTANCE TO WATER ............................................................................................. 2.45 CENTER JOINT LOCK BAR .......................................................................................................... 2.50 CIGAR LIGHTER ........................................................................................................................... 2.28 CLEANING A/C CONDENSER, OIL COOLER AND RADIATOR .......................................................................................................................... 2.36 COMPRESSED AIR SYSTEM ....................................................................................................... 2.33 CONTROL POD ON ARMREST, R.H. CONTROLS - CAB ........................................................................................................................... 2.7 CRUISE CONTROL ......................................................................................................................... 2.7 CUTTER SWITCH ......................................................................................................................... 2.22 DISPLAY MODULE ........................................................................................................................ 2.21 DOME LIGHT ................................................................................................................................. 2.11 DRIVE CONTROL ............................................................................................................................ 2.8 DRIVE DIRECTION CONTROL ....................................................................................................... 2.7 DRIVE SPEED CONTROL ............................................................................................................... 2.7 ENGINE ACCESS PANELS .......................................................................................................... 2.28 ENGINE AIR PRECLEANER ......................................................................................................... 2.31 ENGINE, HOT WATER SHUT OFF VALVE .................................................................................. 2.15 ENGINE, RESTARTING AFTER RUNNING OUT OF FUEL .............................................................................................................................. 2.41 ENGINE, STARTING ..................................................................................................................... 2.41 ENGINE, STARTING, COLD WEATHER CUMMINS ................................................................................................................................. 2.42 ENGINE, STOPPING ..................................................................................................................... 2.44 FAN SWITCH ....................................................................................................................... 2.24, 2.25 FILTER - CAB FRESH AIR ............................................................................................................ 2.15 FILTER, RECIRCULATING AIR - A/C UNIT .................................................................................. 2.14 FIRE DETECTION SYSTEM .......................................................................................................... 2.17 FIRE EXTINGUISHER ................................................................................................................... 2.15 FOOT CONTROL, CENTER ............................................................................................................ 2.9

Tigercat T726E Trencher Tigercat T726E2Trencher Controls and Operation SECTION - CONTROLS AND OPERATION FOOT PEDAL, BRAKE .................................................................................................................... 2.9 FOOT PEDAL, DRIVE SPEED ........................................................................................................ 2.8 FOOT REST ..................................................................................................................................... 2.9 FUEL TANK ................................................................................................................................... 2.30 FUSE AND RELAY PANEL CAB .......................................................................................................................... 2.5, 2.52, 2.57 MAIN ......................................................................................................................................... 2.53 FUSE PANEL ................................................................................................................................. 2.28 GEAR SHIFT LEVER ....................................................................................................................... 2.8 HOT WATER SHUT OFF VALVE (ENGINE) ................................................................................. 2.15 HYDRAULIC HAND FILL PUMP .................................................................................................... 2.31 HYDRAULIC OIL RESERVOIR ...................................................................................................... 2.30 ICONS, PICTOGRAM DESCRIPTIONS .................................................................................. 2.3, 2.4 INSTRUMENT PANEL ................................................................................................. 2.6, 2.16, 2.20 JOYSTICK, BOOM ......................................................................................................................... 2.10 KEY SWITCH ................................................................................................................................. 2.26 LEVER - GEAR SHIFT ..................................................................................................................... 2.8 LIGHT - DOME ............................................................................................................................... 2.11 LIGHT SWITCHES ........................................................................................................................ 2.28 MACHINE PREPARATION ............................................................................................................ 2.43 SYSTEM TEST AND WARM-UP .............................................................................................. 2.43 MOVING INSTRUCTIONS ............................................................................................................. 2.57 OPERATING MACHINE ................................................................................................................. 2.38 PRE-START CHECKS .............................................................................................................. 2.38 PICTOGRAM DESCRIPTIONS ................................................................................................ 2.3, 2.4 PILOT RESET SWITCH ................................................................................................................. 2.23 PILOT SYSTEM SHUT OFF .......................................................................................................... 2.23 PRECLEANER, ENGINE AIR ........................................................................................................ 2.31 PRESSURIZED WATER SYSTEM ................................................................................................ 2.11 RELAYS AND WIRE CONNECTIONS .......................................................................................... 2.55 SEAT .............................................................................................................................................. 2.12 SETTING DRIVE SPEED AND CRUISE CONTROL ....................................................................... 2.7 STARTING ENGINE ...................................................................................................................... 2.41 STEERING WHEEL ....................................................................................................................... 2.10 STOPPING ENGINE ...................................................................................................................... 2.44 TILT STEERING COLUMN ............................................................................................................ 2.10 TOWING INSTRUCTIONS ............................................................................................................ 2.48 VEHICLE MOVING INSTRUCTIONS ................................................................................... 2.56, 2.57 WAIT TO START ........................................................................................................................... 2.20 WARNING LIGHTS FIRE DETECTION SYSTEM ..................................................................................................... 2.17 LOW FUEL LEVEL .................................................................................................................... 2.20 LOW HYDRAULIC OIL LEVEL ................................................................................................. 2.20 STOP LIGHT ............................................................................................................................. 2.20 WAIT TO START ....................................................................................................................... 2.20 WATER SPRAY SYSTEM COMPONENTS ................................................................................... 2.34 WATER SYSTEM, PRESSURIZED .............................................................................................. 2.11 WINDSHIELD WIPER SWITCH .................................................................................................... 2.10 WINDSHIELD WIPER WASHER SWITCH ................................................................................... 2.10 WIRE CONNECTIONS - RELAYS ................................................................................................. 2.55

2.2

Tigercat T726E Trencher

Controls and Operation

PICTOGRAM DESCRIPTIONS Diagrams in pictorial form are used to represent machine function operation. Some of the symbols are signs, characters, figures, or any components related to the operation of the machine. They are a simple universal language of symbols or pictograms that illustrate a function or component without the use of words. Pictograms are installed on or in close proximity to the switch or device used to activate or deactivate the machine function or they may be a sign used on a warning or indicator light of a function that is operating or advising of an alarm condition.

Examples of these pictograms are the turtle speed such as SLOW =

or FAST =

and the rabbit

that are often used to describe

.

The pictograms used on this machine are as follows:

= Air Conditioner ON = Brake Pedal = Air Conditioner OFF = Control Lever Multiple Direction = Air Source, Fresh Air = Control Lever One Direction = Air Source, Recirculate

= Control Lever Two Direction

= Auxiliary Power Outlet 12 V

= Engine Start

= Power Outlet 24 V

= Engine STOP

= Battery Disconnect

= Engine SPEED

= Boom DOWN

= Engine WAIT TO START

= Boom UP

= Fan Auto Reversing/Cleaning = Fan Full ON

= Boom Tilt Back = Fuel - Diesel = Boom Tilt Forward = Fuel Level Low 2.3

Tigercat T726E Trencher

Controls and Operation

PICTOGRAM DESCRIPTIONS CONTINUED = Horn

= Speed FAST or Hi = Speed SLOW or LOW

= Hydraulic Oil Temperature

= Steer Right = Hydraulic Oil Temperature High = Steer Left = Hydraulic Oil Level Low = Switch ON = Hydraulic Oil Level

= Switch OFF = Hydraulic Oil Level High = Temperature

= Hydraulic Oil Level Low

= Ventilation Blower Fan

= Windshield Washer

= Instrument Bulb Test

= Interlock Reset ON

= Interlock Reset OFF

= Lights, Work

= Lights, Engine Service

2.4

Tigercat T726E Trencher

Controls and Operation IMPORTANT

This manual is applicable to factory installed machine functions and controls. It does not take into account any changes or modifications made after shipment. Verify all functions before operating this machine.

1

2

3

4

STEERING WHEEL

•

•

••

••

10

••

6

7

••

8 9

••

••

•

5

• ••

11

13

•• • 12 14

• 1.

2.

3.

4.

5.

6.

7.

FIRE EXTINGUISHER FOOT REST BRAKE PEDAL DRIVE FOOT PEDAL LEFT DOOR SAFETY SWITCH LEFT CONTROL PANEL SEAT

T726E-002

8.

9.

10.

11.

12.

13.

14.

RIGHT JOYSTICK FUSE AND RELAY PANEL RIGHT DOOR SAFETY SWITCH INSTRUMENT PANEL HEATER/AC CONTROLS BATTERY DISCONNECT SWITCH PILOT MANIFOLD (UNDER CAB)

CAB CONTROLS AND COMPONENTS - QUICK REFERENCE 2.5

Tigercat T726E Trencher INSTRUMENT PANEL - QUICK REFERENCE 5

4

3

2

••

•

Controls and Operation

••

1

••

••

6

•• ••

16 17

•

7

18

••

8

••

9

••

•

19 20 21

••

••

•

•• 22

10

••

•

••

••

11 12

••

13

14

T726E-043

••

23

••

15

1. Fire Detection - Red Light

13. Ignition Key Switch

2. Hydraulic Oil Level - Red Light & Horn

14. Parking Brake Switch

3. Low Fuel - Yellow Light

15. Water Pump Switch

4. Stop Light - Red Light & Horn

16. Drive Limitter switch

5. Wait To Start - Yellow Light

17. Plate Direction Switch (If Applicable)

6. PowerView Display Module

18. Side Plate Selector Switch (If Applicable)

7. Cutter Indicator Gauge

19. Hazzard Lights Switch

8. Cutter Switch

20. Work Lights Switch

9. Throttle Speed Switch

21. Road Lights Switch

10. Pilot Reset Switch

22. Lighter (24 VOLT)

11 Fan Switch

23. Auxillary Power (12 VOLT)

12. Bulb Test Switch

2.6

Tigercat T726E Trencher CONTROLS - CAB

Controls and Operation SETTING DRIVE SPEED AND CRUISE CONTROL

2

••

••

3

4

•

•

Set the transmission gear shift lever to desired range.

•

Start the engine and set desired engine speed.

•

Engage the pilot switch and turn park brake switch OFF.

•

Set the drive speed control (2) to the mid position.

•

Set the drive direction control (3) to the forward position.

1

••

FOOT REST

DRIVE SPEED FOOT PEDAL

BRAKE PEDAL

L.H. CONTROL PANEL

6

8

••

CONTROL PANEL - L.H. ARMREST 1. HORN SWITCH Press switch to sound horn.

••

••

INSTRUMENT PANEL

••

L.H. CONTROL PANEL

•

2. DRIVE SPEED CONTROL This is a rotary control (potentiometer) used to adjust the travel speed from minimum to maximum speed. Turn the control clockwise to increase speed or counterclockwise to decrease speed. This switch is used in conjunction with the drive speed foot pedal to adjust travel speed 3. DRIVE DIRECTION CONTROL This is a three position rocker switch for setting the following selections:

•• •

R.H. JOYSTICK

SEAT

T726E-004

•

Press down on the drive speed foot pedal (6) to obtain desired travel speed. When the travel speed has been achieved, set the cruise switch (4) to the ON position and release the foot pedal.

•

Use the drive speed control (2) to increase or decrease the travel speed as required.

•

To STOP machine travel set the cruise switch to OFF or press down on the brake pedal (8), the cruise will automatically be disengaged. To re-engage the cruise control, set the cruise switch to OFF then to ON position.

FORWARD Press the switch forward for FORWARD travel direction.

NEUTRAL Place the switch in the center position for NEUTRAL. REVERSE Press the switch back for REVERSE travel direction.

4. CRUISE CONTROL This is a two position rocker switch used to engage and disengage cruise control function.

Place the switch in the ON position to engage the cruise control function. In the ON position the control automatically maintains travel speed set by the drive foot pedal and the drive speed control. The drive speed control (2) can be used to increase or decrease travel speed when the cruise control is ON. See SETTING DRIVE SPEED AND CRUISE CONTROL. 2.7

Tigercat T726E Trencher

Controls and Operation

5. LEVER - GEAR SHIFT

7

8

Shifting gears Gear shifting must not be done while the machine is in motion. The two speed transmission does not have the capability to mesh moving gears. If the operator shifts gears while the machine is in motion, severe damage will occur to the shift collar and its mating gears and will result in a difficulty or inability to shift from one gear to the other. In order to shift gears with minimum effort and without damaging the transmission, there must be no motion between the gear teeth of the shift collar and the teeth of the low or high speed gear.

•

T726E-039

6

•

•

FOOT PEDALS

3

••

229-20

GEAR SHIFT LEVER

Shifting Procedure: • Bring the machine to a full stop on level ground.

• Reduce the engine speed to IDLE. • Depress foot break pedal to hold the machine stationary.

• Move the gearshift lever (push or pull) to engage the desired gear.

6. DRIVE SPEED FOOT PEDAL

RIGHT FOOT CONTROL - DRIVE CONTROL

Note:

Depress the foot pedal to control the travel speed from fully stopped to the fastest travel speed. This foot pedal works only when the travel drive speed switch is set above minimum, for roading machine set the travel drive speed switch to the maximum position.

If the gear will not engage, the shifting collar and the speed gear have not aligned.

This can be corrected by lightly touching the steering wheel to slightly articulate the machine, which will cause the collar and gear to mesh and allow for easy shifting.

2.8

Tigercat T726E Trencher

Controls and Operation

7. BRAKE FOOT PEDAL

9. PARKING BRAKE The parking brake assembly is installed in the drive line between the transmission and the front axle. Five rotating discs are splined to the brake shaft and 6 stationary discs are held in place in the brake housing. The brake is spring applied and hydraulically released.

CENTER FOOT CONTROL - BRAKES Depress the foot pedal to apply the rear axle brakes when rapid braking is required.

Under normal operating conditions the machine will brake automatically.

NOTE: There are three braking systems on this machine;

PARKING BRAKE SWITCH

724E-004

A parking brake switch on the instrument panel activates and deactivates the brake, also the brake will be activated when the cab door is open or if the engine is not running.

See also INSTRUMENT PANEL for more details regarding parking brake switch operation.

(a) The hydrostatic braking system which is part of the drive system and works when the roading speed foot pedal is released, this should be considered the primary brake. (b) The rear axle brake actuated by the foot pedal (5).

PARKING BRAKE ASSEMBLY

(c) The Parking Brake is activated/ deactivated by a switch on the Instrument Panel. It is a spring applied and hydraulically released brake assembly.

See item (9) for details.

••

8. FOOT REST

STATIONARY DISCS

SPRINGS DRIVE SHAFT

•

724E-007 724E-008 724E-016

2.9

•

•• ••

PARKING BRAKE

ROTATING DISCS

Tigercat T726E Trencher

Controls and Operation

• 14

10

12

•

•• ••

••

13 11

T726E-001

RIGHT JOYSTICK

T726E-037 STEERING WHEEL 10. STEERING WHEEL

This machine is equipped with variable ratio load sense steering. When operating on the road, a slow movement of the steering wheel will produce slower steering. Quick steering changes require rapid movement of the steering wheel.

CAUTION The steering system is always LIVE when engine is running. DO NOT use the steering wheel to assist entering or leaving the cab.

11. TILT STEERING COLUMN

15. BOOM JOYSTICK

Push down on push button to release tilt lock, move steering wheel to desired position.

Release button to lock steering column in place.

Boom Lift Move joystick FORWARD to LOWER boom.

Move joystick BACK to RAISE boom.

Boom Tilt Move joystick to the RIGHT to tilt cutting head FORWARD.

12. TURN SIGNAL SWITCH Push UP to activate RIGHT hand turn signal lights.

Move joystick to the LEFT to tilt the cutting head BACK.

Pull DOWN to activate LEFT hand turn signal lights.

NOTE: Both the front and rear amber lights will flash.

13. WIND SHIELD WIPER SWITCH Rotate to first or second position for LOW or HIGH wind shield wiper speed.

14. WIND SHIELD WIPER WASHER SWITCH Push button at end of stick to spray washer fluid on wind shield.

2.10

Tigercat T726E Trencher HOSE

Controls and Operation

WATER SHUT OFF VALVE (SHOWN CLOSED)

18

17

19

16

•

•

••

• •

196-16A

PRESSURIZED WATER SYSTEM CONTROL VALVE (UNDER SEAT)

•

16. VALVE - Pressurized Water System Turn the hand operated ball valve (shut off valve) under the seat to the ON position to draw water from the 10.5 gallon pressurized holding tank at the rear of the machine. When not in use turn the water supply OFF at this valve and relieve the pressure in the rubber hose, under the operator's seat.

T726E-003

17. LIGHT - DOME The switch is located on the side of the dome light fixture.

18. REAR VIEW MIRROR Provides rear view through rear cab window..

The pressure gauge on the side of the seat should read 60 psi.

19. AM/FM STEREO RADIO/CD PLAYER With two front mounted speakers.

PRESSURE GAUGE

Refer to component manufacturer's manual supplied with the machine for adjustment procedures.

••

••

AIR CHARGE VALVE T726E-002

PRESSURIZED WATER SYSTEM

Refer to PRESSURIZED WATER SYSTEM MAINTENANCE in SECTION 3 of THIS MANUAL

2.11

Tigercat T726E Trencher

Controls and Operation RIDE ADJUSTMENT PROCEDURES After adjusting height, the ride adjustment should be made by pulling or pushing the air ride control valve knob.

SEAT ADJUSTMENTS

To Raise Push ride adjustment control to inflate air spring to obtain desired height.

LUMBAR HORIZONTAL ADJUSTMENT (NOT SHOWN)

To Lower Pull ride adjustment control to deflate air spring to obtain desired height.

BACK ANGLE ADJUSTMENT

•

••

ADJUSTABLE LUMBAR For fore-and-aft displacement, turn HORIZONTAL ADJUSTMENT LEVER. BACK ANGLE ADJUSTMENT

• RIDE ADJUSTMENT KNOB

• •• FORE/AFT SLIDE LEVER

T726E-061

••

•• •• HEIGHT ADJUSTMENT LEVER

•

ARMREST ADJUSTMENT

20. OPERATOR’S SEAT - AIR RIDE T726E-062

WARNING

BACK ANGLE ADJUSTMENT Push down on back angle adjustment lever to place seat back at the desired angle.

The seat belt supplied with this seat must be used at all times when operating this machine.

FORE/AFT SLIDE Move and hold fore/aft slide lever. Roll seat forward or backward to the desired position relative to the footpedal controls.

ADJUSTMENTS HEIGHT ADJUSTMENT PROCEDURES The SPRING-ASSISTED height adjustment is controlled by the height adjustment lever located on the front left side of the seat chassis.

The four height settings: top, bottom and two inbetween, provide a total height adjustment of 3”.

••

To Raise Firmly lift up on the height adjustment lever.

When the lever releases, hold it up while partially lifting the operator’s body weight from the seat.

When the seat is at the desired height, FIRMLY PUSH DOWN on the lever until the seat locks (a click should be heard).

LUMBAR HORIZONTAL ADJUSTMENT

ARMREST ADJUSTMENT

••

To Lower Firmly lift up on the height adjustment lever.

When the lever releases, partially apply operator body weight to the seat until the seat is at the desired height. FIRMLY PUSH DOWN on the lever. Hold lever down until the seat locks into position (a click should be heard).

VIEW FROM RIGHT SIDE OF SEAT

•• •• T726E-063

ARMREST ADJUSTMENT Each armrest has 2 adjustments to place it in the required position. Loosen adjustment locking wingbolts to reposition armrest height and fore/aft position.

2.12

Tigercat T726E Trencher PROBLEMS AND CORRECTIVE ACTION

Controls and Operation

RIDES TOO STIFF/SEAT TENDS TO PUSH OR THROW OPERATOR FORWARD The air ride control valve has over pressurized the seat air suspension. This typically happens because the operator is trying to use the air suspension to adjust the ride height rather than using height adjustment lever to raise the seat.

Refer to height adjustment.

RIDES TOO SOFT OR BOTTOMS OUT AND PINCHES OPERATOR The air ride control valve has under pressurized the seat air suspension ride adjustment Insufficient pressure exaggerates the knee-action movement of the seat. This usually happens because the operator is trying to lower the seat by decreasing the amount of air pressure instead of using the Height Adjustment lever. Refer to height adjustment.

SEAT TOO HIGH/SEAT TOO LOW There are several things which can cause improper seat height. Refer to the HEIGHT ADJUSTMENT and adjust seat to the desired position. If the proper height cannot be reached using one of the four height adjustment settings, it may be necessary to install the seat on a higher base.

OPERATOR’S LEGS FALLING ASLEEP The seat is adjusted too high, and the air ride control valve has under pressurized the seat air suspension ride adjustment, resulting in the operator sitting in a “bucket”. Refer to height adjustment and RIDE ADJUSTMENT.

•

2.13

Tigercat T726E Trencher C

A

B

•

Controls and Operation

•

••

D

•

••

••

TOP L.H. REAR CORNER

22 E

22

•

• •

• • ••

AIR CONDITIONER HEATER CONTROLS 21. AIR CONDITIONER/HEATER

AIR VENTS

R.H. REAR PILLAR 726E-035 726E-036 726E-038

22. AIR VENTS

7501-8A

The Air Conditioner/Heater system has six air outlets in the cab.

The controls on this panel are used to adjust the heating and air conditioning temperature for operator comfort in the operator's cab.

23

A. A/C ON/OFF SWITCH This is a push/on push/off power switch.

••

B. FAN SPEED - OFF/LOW/MED/HIGH This is a rotary, four position switch for the fan speed.

C. AIR SOURCE - 2 POSITION This is a rotary, two position switch to select either, outside fresh air or to recirculate inside air.

208-19

AIR FILTER

23. FILTER, RECIRCULATING AIR - A/C UNIT When the AIR SOURCE switch is in the RECIRC AIR position, air in the cab is drawn into the A/C- HEATER unit via this filter and recirculated. The filter is located at the base of the A/C unit, below the right arm rest of the operator’s seat. It should be cleaned or replaced every 125 hours. Remove the two thumb screws in the filter box cover to access the filter.

D. HEAT - VARIABLE This is a variable, rotary dial to adjust the amount of heated air for the cab. Make sure this control is off, when using the air conditioning.

E. AIR CONDITIONING - VARIABLE This is a variable, rotary dial to adjust the temperature of cooled air for the cab.

NOTE: To maximize the efficiency of the air conditioning, the heat control dial on the control panel must be rotated to the "OFF" position. Also refer to HOT WATER SHUT OF VALVE, in THIS SECTION.

IMPORTANT: The RECIRCULATING AIR FILTER and the CAB FRESH AIR FILTER may require cleaning more frequently under extreme operating conditions.

IMPORTANT: It is recommended that during cold weather when the A/C system is not in use, that it be run for a period of 5 minutes every 2 weeks.

This will circulate oil to all components of the A/C system.

CAUTION • If using compressed air for cleaning, use at 30 psi or less.

• Always use personal protective equipment to guard against flying debris.

2.14

Tigercat T726E Trencher

Controls and Operation

24

• CHECK CHARGE GAUGE DAILY

FRESH AIR FILTER

726E-037

24. FILTER - CAB FRESH AIR When the AIR SOURCE control knob (C) on the A/C Heater control panel is in the FRESH AIR position, outside air is drawn into the cab A/C Heater unit through this filter and mixed with interior air from the cab. The filter is located in the rear of the cab roof and accessible from outside the cab. It should be checked every 125 hours. This is done by removing 6 bolts and removing the air inlet cover. Next remove 2 bolts and remove the filter retainer. This will allow access to the filter.

26. FIRE EXTINGUISHER A portable fire extinguisher is located in operator's cab. The extinguisher should be checked daily to ensure that it is charged.

The pointer on the charge gauge should point to the green region. If the indicator falls out of this green area, the extinguisher should be serviced immediately.

ENGINE

••

••

HOSE TO A/C HEATER UNIT

25 SHUT-OFF VALVE

T726E-036

•

Maintain a CHARGED fire extinguisher on the machine at all times and KNOW HOW TO USE IT.

HOT WATER SHUT OFF VALVE

25. HOT WATER SHUT OFF VALVE (ENGINE) To maximize the efficiency of the air conditioning, the HEAT control knob (D) on the A/C Heater control panel must be rotated to the "OFF" position. During times when cab heating is not required the HOT WATER SHUT OFF VALVE, on the heater hose from the engine, should also be closed to prevent hot water from seeping through the A/C unit, thereby reducing the effect of the cooling system.

2.15

Refer to the manufacture's Use and Information manual for proper usage, additional information and recommended inspection and maintenance intervals.

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10 11

••

••

20 21

•• ••

22

12 13

T726E-043

INSTRUMENT PANEL

CAUTION

WARNING LIGHTS AND AUDIO ALARMS This machine is equipped with five warning lights and two audio warning buzzers. The warning lights , items 1 thru 5 are located on the top row of the instrument panel. The audio warning buzzers are located in the compartment below the instrument panel.

DO NOT WEAR DARK SHADED GLASSES WHEN OPERATING THIS MACHINE! •

Wearing dark shaded sun glasses can reduce the ability to see warning lights.

•

The dark shade of sun glasses is intended to reduce glare and decrease ambient light, which will lower the intensity of warning lights making them less visible.

•

Failure to observe warning lights and act upon the warning can result in machine failure or serious fire damage.

CAUTION DO NOT OPERATE THE AM/FM STEREO RADIO CD PLAYER OR ANY PERSONAL SOUND SYSTEM WITH THE VOLUME CONTROL EXCEEDING THE VOLUME OF THE AUDIO WARNING ALARMS OF THIS MACHINE! •

Entertainment sound systems operated at high sound levels can reduce the ability to hear audio warning alarms.

•

Using a stereo headset or earphones with a portable sound device and operating the sound level at high volume can result in failure to hear audio warning alarms.

•

Failure to hear audio warning alarms and act upon the warning can result in machine failure or serious fire damage.

14

IMPORTANT: It is the responsibility of the operator to take heed of these alarms and take the appropriate action whenever a warning alarm is activated.

The following information provides details of each of the warning alarm systems and outlines what action is required when the alarm system is activated.

Read and study this information as well as the safety section 1 of this manual. The information provided will prepare you the operator, with the knowledge required of what to do should an alarm be activated.

2.16

Tigercat T726E Trencher FIRE DETECTION WARNING LIGHT

Controls and Operation

726E-013

726E-015

2

•• •• •• •• ••

•• • THERMOSTAT

INSTRUMENT PANEL

•

HYDRAULIC PUMP COMP'T

1

1. FIRE DETECTION SYSTEM NOTE: This system is for FIRE DETECTION ONLY, it is not a fire suppression system.

T726E-043

In no way does the installation of this fire detection system reduce the need to adhere to the guidelines given in the FIRE PREVENTION section of this manual.

BULB TEST SWITCH

BULB TEST SWITCH This momentary switch (1) is used to perform bulb and audio buzzer test. Hold this switch in the ON position to test ALL warning light bulbs (2) on the instrument panel as well as the Fire Detection System Warning Light and Audio (buzzer).

Replace burnt out lights and defective buzzers immediately to ensure that all warning devises are in working order at all times.

The fire detection system is only a warning system and will not extinguish a fire. If a fire is detected it must be extinguished manually using certified fire fighting equipment.

SYSTEM OPERATION

FIRE DETECTION SYSTEM COMPONENTS The Fire Detection System consists of the following main components:

There are 3 thermostats mounted in the engine and hydraulic area which are wired to the warning light and buzzer. The thermostats are automatic heat detection devices and are set to “close” at 177°C (350°F). When a thermostat closes it sends an electrical signal to the warning light and buzzer indicating that a high temperature has been detected. The stop engine light and horn will also be activated.

FIRE DETECTION WARNING LIGHT

••

IN CASE OF FIRE DETECTION ALARM: 1. Stop machine operation, park machine in a safe location and lower the attachment to the ground.

2. Shut down the engine.

WARNING LIGHT AND BUZZER - In cab, warning light is on the instrument panel. The buzzer (not shown) is in the compartment below the instrument panel.

3. Remove the portable fire extinguisher from it's storage location.

4. Exit the cab immediately taking the fire extinguisher with you.

5. Inspect the machine for cause of the Alarm.

Refer to "WHAT TO DO IN CASE OF A MACHINE FIRE" and "WHAT TO DO AFTER A FIRE" in SECTION 1 of the operators' manual.

2.17

Tigercat T726E Trencher

Controls and Operation

FIRE DETECTION SYSTEM COMPONENTS CONTINUED

SYSTEM TEST Daily: •

THERMOSTAT

••

Weekly:

726E-013

726E-014

Use the bulb test switch to activate the Warning Light and Buzzer.

HYDRAULIC PUMP COMPARTMENT

HEAT THERMOSTAT - In hydraulic pump compartment

••

Inspect all parts for damage, rust, corrosion or dirt. Replace any damaged parts immediately.

•

All components are in place and unobstructed.

•

Check fire suppression electrical network for cut, frayed, stripped or damaged wires.

•

Ensure thermostats are clean.

Every Month: • Turn ignition switch on and perform the bulb test to confirm warning system light and buzzer operation. Next, use a heat source (heat gun) to apply heat to each of the thermostats to confirm warning system light and buzzer operate.

WIRE CONNECTIONS

••

•

• THERMOSTAT

726E-016

ENGINE COMPARTMENT - L.H. SIDE

KEEP TIP OF HEAT GUN BACK 76.2mm - 127mm (3"-5")

HEAT THERMOSTAT - L.H. side rear in engine compartment.

••

HEAT GUN

WIRE CONNECTIONS THERMOSTAT

APPLY HEAT TO THIS AREA ONLY.

••

THERMOSTAT

• 726E-017

WHEN TEST IS COMPLETE WIPE THERMOSTAT OFF WITH A COOL WET CLOTH.

ENGINE COMPARTMENT - FRONT HEAT THERMOSTAT - Over front of engine.

The system WIRE HARNESS is braided in black with a red tracer for easy identification.

726E-018

HEAT TESTING THERMOSTAT USING A HEAT GUN

3 AMP FUSE

NOTE: DO NOT USE BUTANE TORCHES or any type of flame tool to heat test the sensors. The intense heat from a flame tool can damage the sensor.

• T726E-019

724E-006

FUSE PANEL - IN CAB

ELECTRICAL POWER SUPPLY Power is supplied to the system by a 3 Amp fuse located in the fuse and relay panel.

2.18

Tigercat T726E Trencher

Controls and Operation

726E-013

FIRE DETECTION WARNING LIGHT

726E-019

FIRE EXTINGUISHER

•• THERMOSTAT

726E-017

ENGINE COMPARTMENT - FRONT 726E-039

••

THERMOSTAT

•

THERMOSTAT 726E-016

726E-015

ENGINE COMPARTMENT - L.H. SIDE

HYDRAULIC COMPARTMENT - CENTER

FIRE DETECTION SYSTEM AND FIRE EXTINGUISHER LOCATION If any of the components are damaged, replace them immediately before operating the machine.

FIRE PREVENTION

AVOIDING DAMAGE AND FALSE SIGNALS DURING MACHINE SERVICE: Pay attention to the location of the components of the fire detection system. Take care not to damage heat sensors or wiring, this includes hitting, cutting, bending, denting, etc. Damage to heat sensors due to shock could make the system inoperable and/or cause false signals.

Cut, pinched, or kinked wiring could make the system inoperable and/or cause false signals.

WARNING Failure to follow these instructions and guidelines may result in serious bodily injury, death, and property damage.

Refer to section 1 of this manual for FIRE PREVENTION information/techniques.

In addition thermostats are sensitive to heat from welding torches, steam cleaning or other outside sources which may create a false detection by the system.

2.19

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

•

••

••

9

••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

14

INSTRUMENT PANEL CONT'D 4. STOP LIGHT - RED LIGHT AND HORN

2. LOW HYDRAULIC OIL LEVEL - RED LIGHT AND HORN This light will come ON and a horn will SOUND when the hydraulic oil level falls approximately 10 gal. US (38L) below the FULL mark.

The light will come ON and horn will SOUND when engine oil pressure falls below 10psi or when any other stop engine requirement is issued by the engine ECM or when the fire detection system is activated..

Stop the engine immediately when this alarm is activated. Operating machine with a low hydraulic oil level can cause hydraulic pumps to fail.

NOTE: Stop the engine when the stop light and horn are activated. Investigate the cause and correct the fault before attempting to restart the engine. See OPERATING MACHINE in this SECTION for more information.

When this alarm is activated stop the engine and look for signs of broken hoses or other leaks. Repair leaks and refill the tank to FULL mark on the sight gauge. Restart engine and inspect for leaks.

5. WAIT TO START - YELLOW LIGHT

3. LOW FUEL LEVEL - YELLOW LIGHT This light is used as a Low Fuel Level warning.

The indicator light will come ON when the FUEL level drops below 15 gal. US (56.8L).

2.20

This YELLOW warning light will be ON during the "key RUN" engine pre-heat time. Heating elements (grid heater elements) located in the engine air intake manifold are turned ON during cold weather conditions to heat the intake air when starting the engine. The engine must not be started until this light turns OFF automatically.

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

•

••

••

9

••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

6. DISPLAY MODULE The PowerView Display Module is the operator interface with the electronic engine controls. The PowerView enables the operator to view various engine parameters and service codes. The display can show either a single parameter or a quadrant display showing 4 parameters simultaneously. Diagnostic capabilities include fault codes with text translation for the most common fault conditions.

The PowerView has four buttons used to navigate the display and various menus.

Some of the functions displayed by the PowerView Display Module are as follows:

• • • • • • • • • • • • • • •

Engine RPM Engine Hours, Machine Hours System Voltage, % Engine Load at current RPM, Wait To Start, Water In Fuel Warning, Coolant Temperature, Oil Pressure, Fuel Economy, Throttle Position, Engine Manifold Air Temperature, Current Fuel Consumption, Hydraulic Oil Temperature Active and Stored Engine Service Codes 2.21

14

Set Units for display (English or Metric), Engine Configuration Parameters and more.

NOTE: Refer to manufactures Operations Manual (supplied with the machine) for detailed information.

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

14

7. CUTTER SWITCH This is a three position switch labelled ONOFF-REV JOG. ON Place throttle at HIGH IDLE before turning the cutter ON for normal operations. Cutter drum rotates at FULL speed in the FORWARD direction.

724E-028

NOTE: If the engine is turned off with the cutter switch in the ON position, the cutter will not start up again when the engine is restarted. The cutter switch must be turned OFF and then back ON for the cutter to start.

7A. CUTTER INDICATOR The gauge reads attachment pressure.

Consider the four gauge increments as 1/4, 1/2, 3/4 and 1. During cutting operations as system pressure increases, the indicator value will rise to 1 as the cutter slows down due to cutting, and fall as the cutter speeds up and system pressure drops off.

OFF Cutter drum is turned off.

REVERSE JOG

A 3/4 value or higher indicates that the cutter has not attained full speed. Further cutting should be delayed until the indicator value falls below the 3/4 increment to prevent stalling the cutter during the next cut. Between 1/4 and 3/ 4 the cutter is at optimum cutting speed.

This switch position is used for slowly rotating the drum in reverse and for turning or indexing the cutter drum slowly for inspection and alignment during drum replacement.

Before using REVERSE JOG, place the throttle at LOW IDLE. Press and hold the REVERSE JOG switch.

Release the REVERSE JOG switch to stop the drum rotation.

2.22

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21 22

•• ••

12 13

T726E-043

14

8. THROTTLE SPEED SWITCH 9A

This is a momentary switch used to increase/ decrease engine speed. Press on bottom of switch to decrease engine speed. Press on top of switch to increase engine speed.

•

The engine speeds are as follows:

•

Low Idle - 850 rpm (No Load) ACTUATOR

High Idle - 1920 rpm (No Load) The above values are taken with the hydraulic and engine oil at normal operating temperature and without any functions operating.

724E-001

PILOT SYSTEM SHUT OFF

9A. PILOT SYSTEM SHUT OFF Both doors are equipped with interlock switches to prevent the machine from being operated while the doors are open (pilot system shut off).

9. PILOT RESET This function prevents accidental or improper use of the controls from anywhere but the operator's seat.

To operate: Close both doors and press the pilot reset switch.

With the engine running and both doors closed, push this switch to REACTIVATE the pilot system after it has been deactivated by opening of the cab door, or by turning the key switch to the OFF position.

NOTE: All functions on the machine can now be operated, either as intended or by accidentally touching them.

Once the safety interlock system has been activated, the safety of both the operator and all persons outside the cab becomes the responsibility of the operator.

These door interlock switches and the pilot reset switch are safety features and their function must not be defeated in any way.

2.23

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

14

10. FAN - SWITCH This is a three position switch, labelled CLEAN/AUTO/FULL ON*. This switch along with an electronic fan control module, controls the operation of the hydraulic cross-flow fan.

When the switch is in the AUTO position and the fan has stopped due to low charge air, engine coolant or hydraulic oil temperatures, turning ON the A/C will cause the fan control to immediately turn the cooling fan to run at 1200 rpm when engine is at 1800 rpm. This is to ensure that sufficient air flow is available for the cab A/C even while the machine is still warming up.

AUTO POSITION - AUTO is the normal operating position for the fan control switch.

When the switch is in the AUTO position, the fan will operate completely in an automatic mode. It will start, speed up, slow down or stop all based on the temperature of the charge air, engine coolant and/or the temperature of the hydraulic oil. The electronic fan control module automatically adjusts fan speed to the minimum required level to maintain optimal operating conditions, provide auto reversing and default to fan at full speed if an error in the controller exists.

Automatic control of fan speed to match operating conditions can lower fuel consumption and reduce operating costs. In high temperature operating conditions the fan speed is increased to improve cooling ability and efficient operation of the charge air cooler, oil cooler, radiator and air conditioning systems. In low temperature operating conditions fan speed is reduced, as less cooling is required.

2.24

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

10. FAN - SWITCH (CONTINUED)

14

It is also important to manually clean debris from the machine on a regular basis to maintain low machine operating temperatures. Refer to CLEANING A/C CONDENSER, CHARGE AIR COOLER, OIL COOLER AND RADIATOR in THIS SECTION.

FULL ON (OVERRIDE) POSITION - When the switch is in the FULL ON (OVERRIDE) position, the fan control system is overridden and the fan will run at FULL speed for cooling regardless of charge air, coolant or oil temperatures. Normally the fan control switch is placed in the AUTO position for optimal cooling. The FULL ON (OVERRIDE) position is intended for use in the event of a temporary failure of the fan control. AUTO REVERSING/ CLEANING does not function in FULL ON position.

11. BULB TEST - SWITCH This momentary switch is used to perform bulb test. Hold this switch in the ON position to test ALL warning light bulbs on the instrument panel. Replace burnt out light bulbs immediately to ensure that all warning lights are in working order at all times.

CLEAN POSITION - When the switch is in the CLEAN position the direction of rotation is reversed. Reverse rotation is used to clean the charge air cooler, radiator, oil cooler, A/C condenser and air intake door screens. By "reversing" the flow of the fan, air flow is propelled in the opposite direction helping to force dust and debris off of the cooling package.

The electronic fan control will also turn the A/C system OFF for as long as the fan switch is in the CLEAN position.

The fan auto reversing function is factory set to cycle every 10 minutes.

2.25

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

14

14. CUTTER WATER SWITCH

12. KEY SWITCH

This is a two position switch. Use to turn ON the water spray system for the cutter drum.

Water is used to control dust during cutting.

The water system does not work unless the Cutter Switch is in the ON position.

This is a three-position switch labeled OFF/ RUN/START. OFF Position - All electrical power fed through the key switch is turned “OFF” RUN Position - Connects the battery to all functions. Used for normal machine operation.

START Position - Used to energize the starter motor to start the engine. NOTE: The parking brake must be in the ON position to start the engine.

13. PARKING BRAKE SWITCH The parking brake is spring applied and hydraulically released. The parking brake is engaged (light ON) when the switch is activated to turn the brake ON, or the ignition key is turned OFF, or the cab door is opened when the engine is running.

To disengage the parking brake, close the cab door, start the engine and depress the pilot reset and the parking brake switch. The light will turn OFF and the brake will disengage.

NOTE: Stop machine travel before opening the cab door. Whenever the cab door is opened the parking brake will engage.

T726E-017

The water spray system consists of a 757 litre (200 US gal) tank, shut-off valve, strainer, electric pump, relief valve, pressure gauge, four nozzles, hoses and fittings, clamps and brackets. System pressure is set at 2.8 bar (40 psi) with a flow of 12 L/m (3 US gpm). See WATER SPRAY SYSTEM COMPONENTS in this section for details.

2.26

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

••

20 21

•• ••

22

12 13

T726E-043

14

These switches (16 and 17) are used in conjunction with each other to shift one or both of the cutting head side plate(s). The side plates need to be shifted during the replacement of the cutting drum or when shifting the position of the cutting head relative to the machine.

15. DRIVE LIMITER This is a two position switch. This switch has no effect when the cutter switch is in the OFF position.

Placing this switch in the ON position (when the cutter switch is also in the ON position) activates the drive limiting system. This system monitors attachment pressure and automatically limits power to machine drive function(s) in order to prevent engine stalling and divert maximum engine horsepower to the cutter.

Whenever possible, cutting should be done with the cutting head positioned in the center of the machine. Offsetting the head to the right side is required when cutting close to the edge of the road or along a street curb.

Cutting with the head offset to the left side should not be done.

This function is intended to aid the operator in maintaining correct engine rpm levels during cutter operations for maximum productivity.

Before using either of these switches, place the throttle in LOW IDLE.

It is important not to stop or stall the engine with the cutter rotating. Serious component damage may result. Always stop the cutter with the engine at idle.

Press the PLATE switch to select which side plate is to be shifted.

Press and hold the DIRECTION switch to move the side plate in the desired direction.

Release the DIRECTION switch to stop side plate shift.

16. PLATE DIRECTION (If Applicable) This is a three position switch labelled LEFTBLANK-RIGHT. This switch selects the direction of movement of the selected side plate(s).

NOTE: (CUTTING HEAD) MANUAL TRANSVERSE ADJUSTMENT. On machines not equipped with items 16 and 17, the cutting head transverse (side to side) adjustment is done manually by removing the lock pins and sliding the cutting head to the desired position and then reinstall the lock pins.

17. PLATE SELECTION (If Applicable) This is a three position switch labelled LEFTBOTH-RIGHT. This switch selects which of the 2 cutting head side plates are to be moved or shifted.

2.27

Tigercat T726E Trencher

Controls and Operation

5

2

3

4

••

••

••

1

••

6

•

7A

••

••

15 16

•

17

•

7

••

8

••

18 19

• ••

9

•• ••

••

•

•• ••

10

••

11

20 21

•• ••

••

22

12 13

T726E-043

14

23

18. HAZZARD LIGHTS This switch will turn on the front and rear hazzard lights.

••

19. WORK LIGHTS This switch will turn on the lights that illuminate the work area in front of the machine.

724E-006

20. ROAD LIGHTS This switch will turn on the road lights. The switch has three positions, OFF, LOW (low beam) and HIGH (high beam).

42726BR1

FUSE PANEL - IN CAB

23. FUSE PANEL The fuses, diodes and relays are located beneath a panel below the instrument panel.

Press the latch button to open the door to access the fuses, diodes and relays. See FUSE AND RELAY PANEL - CAB in THIS SECTION for more detail.

21. LIGHTER Cigar/Cigarette lighter 24 volt.

22. AUXILIARY POWER A 12 volt outlet with 20 amp capacity for portable devices such as phones.

IMPORTANT

24 VOLT ELECTRICAL SYSTEM 2.28

Tigercat T726E Trencher

Controls and Operation REAR CHASSIS 1. HEAT EXCHANGER COMPARTMENT To open the access panels and doors, turn the knob counterclockwise and swing the upper door open. Lift the lower panel up and out. Reverse this procedure to close doors.

CAUTION The lower access panels are NOT HINGED or permanently attached to the machine, but are held in place by the UPPER DOORS. Therefore they can fall during the process of removing them from the machine. Once the UPPER DOOR is opened the LOWER PANEL is not fully supported and it is not safe to apply any weight or pressure to the panel, as it may fall out of the remaining supports. Do not use these LOWER PANELS as hand grips, when servicing the machine.

724E-017

24863A R.H. SIDE ACCESS PANELS

BATTERY DISCONNECT SWITCH BATTERY DISCONNECT - SWITCH

•

•

This manually operated switch located in the cab mounted to the side of the seat pedestal, completely disconnects all electrical circuits on the machine from the battery.

HAND KNOB

••

••

Turn the battery disconnect switch OFF if the vehicle is to be parked for an extended period of time (Example - overnight).

NOTE: Wait for 30 seconds after turning key switch off before turning the battery disconnect switch off. The engine ECM requires time after the engine is turned off to record the engine data and log the information for the current operating session. If the battery disconnect is turned off too soon, the data will not be recorded and an error message will be displayed when the battery power is turned back on and the key switch is turned on.

R.H. ENGINE ACCESS PANELS

726-002

HAND KNOB

L.H. SIDE ACCESS PANELS

• •

•

•

IMPORTANT: Only use the battery disconnect switch to shut off a running machine in an emergency. A fault code will be logged by the ECM on the engine for improper shut down and power down.

WARNING

726-001

Before leaving the machine unattended, always lower the felling head to the ground, engage the parking brake and turn off battery disconnect.

2.29

L.H. ENGINE ACCESS PANELS

Tigercat T726E Trencher

Controls and Operation

2 HYDRAULIC OIL RESERVOIR

DIPSTICK

•

•

•• SIGHT GAUGE HYD. OIL LEVEL

• FILTER SCREEN SENDING UNIT LOW HYDRAULIC OIL

••

• 718E-037

FUEL TANK DIPSTICK/FILTER SCREEN 2. FUEL TANK Located at the right rear of the machine, the fuel tank has a capacity of 125 gallons (473 liters) and incorporates a dipstick and filler screen under the filler cap. The dipstick slides through a hole in the side of the filler screen. DO NOT drop the dipstick into the filler tube or it will punch a hole in the bottom of the filler screen. The filler screen should be removed and cleaned every 125 hours (reach in and lift it out). Replace the screen if it is damaged.

726E-012

HYDRAULIC OIL RESERVOIR

3. HYDRAULIC OIL RESERVOIR Located at the left rear of the machine, the hydraulic reservoir has a capacity of 58 gallons (220 liters). A sight gauge, accessible through the rear door indicates the HIGH and LOW levels of the hydraulic oil.

A low level sending unit is used and signals a “low hydraulic oil” light in the cab to come ON when the oil level is low. Always keep the hydraulic oil between the HIGH and LOW calibrations.

A low hydraulic oil level can result in severe damage to pumps.

Over filling causes the excess oil to discharge from the breather vent.

2.30

Tigercat T726E Trencher

Controls and Operation 5

• HAND FILL PUMP

• 726D-007

T726E-011

AIR INTAKE PRECLEANER

5. ENGINE AIR PRECLEANER

HAND FILL PUMP

The engine air precleaner cleans engine air before it reaches the air cleaner filter elements. It removes contaminants such as dust, powder, insects, rain and snow. This precleaner is self powered and self cleaning requiring virtually no maintenance. However, it should be checked periodically to make sure that foreign materials have not plugged the intake area or the exhaust port area.

4. HYDRAULIC HAND FILL PUMP The hydraulic hand fill pump, located at the rear of the machine is used for adding oil to the hydraulic oil reservoir.

To add oil to the reservoir, rotate hand fill pump outwards, clean suction tube and remove cap. Open oil fill shut-off valve, insert end of suction tube into supply drum and operate the pump. The oil is pumped directly into the hydraulic reservoir via a return filter.

The pump should always be operated at a medium speed with steady motion. Pumping too fast may cause oil to by-pass oil filter.

CONTAMINANTS ARE BLOWN OUT OF SPECIAL DISCHARGE PORTS BY HIGH VELOCITY, AIR POWERED ROTOR

AS THE AIR SPINS, CENTRIFUGAL FORCE SEPARATES FOREIGN MATERIALS FROM THE CLEAN AIR

•

SPINNER BLADE

IMPORTANT: Close shut-off valve after filling and replace cap on suction tube.

•

•• •

SPINNER ARM

•

•

THE TURBO II PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER

TURBO II PRECLEANER OPERATION NOTE: Remove the precleaner every 500 hours and use a mechanics mirror to inspect the spinner assembly, check to ensure the spinner arms are not worn and the spinner blades are intact. In high dust conditions and especially abrasive dust and dirt the spinner arms and blades may wear rapidly.

TURBO 2

If wear is noticed replace the spinner assembly immediately.

2.31

Tigercat T726E Trencher

Controls and Operation

•• SAFETY ELEMENT

•• 726D-024

UNLOADER VALVE

AIR CLEANER UNLOADER VALVE

AIR CLEANER UNLOADER VALVE

••

This rubber valve on the tube of the air cleaner housing should be checked before every shift (8 hours). If this valve is missing, damaged or has turned hard, it will cause the air cleaner to become ineffective. The valve should suck closed at 1/3 throttle.

PRIMARY ELEMENT

This valve should be replaced every 1000 hours. Remove the unloader valve from the tube of the air cleaner housing. Check and clean the valve. A good valve is soft and flexible. If plugged, be sure to check the filter elements as they may need replacing as well.

Reattach the valve to the tube.

AIR FILTER ELEMENTS 6. AIR CLEANER 726D-006PLT

The air cleaner on this machine uses two filter elements; a primary element and a safety element accessible from the left side of engine.

When operating in high dust conditions, the unloader valve should be checked and squeezed every 2 hours to release dust buildup.

To ensure maximum engine protection, it is important that the elements be serviced correctly and at proper servicing intervals.

• 726D-020

In addition refer to the LUBRICATION AND MAINTENANCE SCHEDULE in AIR CLEANER MAINTENANCE in SECTION 3 of THIS MANUAL.

FILTER RESTRICTION INDICATOR

FILTER RESTRICTION INDICATOR

A filter restriction indicator is mounted to the output side of the filter, this should show green when the engine is running at HIGH RPM. Service is required only if the indicator shows red.

2.32

Tigercat T726E Trencher

Controls and Operation CAUTION

•

Use compressed air for cleaning only when the machine is cold to avoid the risk of fire caused by debris contacting hot surfaces.

If using compressed air for cleaning, use at 30psi or less.

Always use personal protective equipment to guard against flying debris

C

A

• ••

F B

• •

D

150 PSI RELIEF VALVE

••

•

QUICK CONNECTOR

DRAIN VALVE

••

•

E T726E-034

T726E-033

COMPRESSED AIR SYSTEM

QUICK CONNECTOR AND DRAIN VALVE

7. COMPRESSED AIR SYSTEM The machine is equipped with a compressed air system (located in the engine compartment) consisting of the following components: A. Compressor

An air tool quick connector is located in the left side of engine compartment for connection of air tools. The air tank drain valve is located behind the quick connector mounting bracket.

B. Pressure Regulator C. Air Tank

••

D. Air Tool Quick Connector E. Drain Valve

2

•

F. Relief Valve 10.34 bar (150 psi)

••

1

AIR TANK

8. ELECTRICAL PLUG-INS There are two (110 volt) electrical plug recepticles in the left side of the engine compartment. The top plug (1) is for the engine coolant block heater and the lower plug (2) is for the engine oil pan heater.

T726E-034

ILLUSTRATION NAME

AIR TANK The air tank is mounted in the engine compartment above the engine. The tank has a drain line that is connected to the drain valve.

The tank should be drained every 40 hours to remove any accumulated water in the tank.

2.33

Tigercat T726E Trencher

Controls and Operation

9. WATER SPRAY SYSTEM COMPONENTS

WATER SUPPLY SHUT-OFF TURNED OFF

•

WATER TANK

•

The strainer should be checked every 250 hours.

Turn the water supply shut-off valve off.

T726E-010B

WATER TANK The water tank is mounted on top of the rear chassis.

STRAINER

••

T726E-027

WATER FILL CONNECTION AND SHUT-OFF

Unscrew the strainer bowl from the housing and remove the bowl and strainer. Clean the bowl and strainer and reinstall them back on the housing.

•

GAUGE

••

RELIEF VALVE

T726E-031

WATER FILL CONNECTION/SHUT-OFF The water tank fill connection is located in the cooler package compartment. A standard garden hose can be connected to the fill connection to fill the tank. A shut-off valve is provided to open the fill hose connection when filling the tank and to close the connection when the tank is full.

••

• T726E-024

WATER PUMP

•

T726E-025

WATER SUPPLY PUMP AND RELIEF VALVE The water supply pump and relief valve are located in the front chassis hydraulic valve compartment. The water pump is on the left side and the relief valve is on the right side.

WATER SUPPLY SHUT-OFF

The relief valve assembly is equipped with a pressure gauge. The water pressure is set at 2.8 bar (40 psi) with a flow of 12 L/m (3 USgpm). To adjust the pressure turn the relief valve adjuster in to increase pressure or out to decrease pressure.

STRAINER

•• T726E-028

WATER SUPPLY SHUT-OFF AND STRAINER The water spray system has a shut-off valve located in the cooler package compartment. It is used to turn the water supply ON and Off. A strainer located just below the shut-off valve is provided to filter out any particles in the water supply.

2.34

Tigercat T726E Trencher

Controls and Operation

T726E-005

CUTTER WATER PUMP SWITCH The water pump switch is located on the instrument panel. Press on the top of the switch to turn the pump on. The switch light will turn on when the switch is ON. NOTE: Be sure to turn the water supply shut-off valve ON before turning on the water pump switch.

WATER NOZZELS There are four water spray nozzles mounted on the cutter head.

NOZZLES

•• •• T726E-029

Two nozzles are on the right side plate, one front and one rear.

NOZZLES

••

•• T726E-030

Two nozzles are on the left side plate, one front and one rear.

2.35

Tigercat T726E Trencher CLEANING A/C CONDENSER, AND COOLER PACKAGE

Controls and Operation The A/C condenser core, charge air cooler, radiator and oil cooler should be manually checked every 8 hours (every shift) or more often where conditions cause accumulation of twigs, leaves, pine needles and dust. All of the engine enclosure doors should also be checked.

The A/C condenser core is located on the left side of the machine and is mounted directly in front of the charge air cooler, oil cooler and radiator. The cross-flow fan is mounted on the right side of the machine. The cross-flow fan draws air from the left side of the machine through the door screen, the A/C condenser, the charge air cooler, oil cooler and the engine radiator blowing it out of the right side of the machine.

CAUTION • If using compressed air for cleaning, use at 30 psi. or less.

• Always use personal protective equipment to guard against flying debris.

PROCEDURE: 1. Swing out the top screen door and lift out the bottom screen panel on the right and left sides of the front engine area, behind the cab.

726D-030

LEFT SIDE - A/C CONDENSER AND COOLER 726D-031

CHECK A/C CONDENSER CORE

2. The A/C condenser swings out to access the back-side of the condenser and the front of the cooler package for cleaning. It is held in place by two fasteners.

Compressed air or water may be used for cleaning. Use personal protective equipment to guard against flying debris.

If an oil leak occurs in this area it should be thoroughly power-washed with a mild soap to ensure that all of the oil is removed. The presence of oil causes dust and dirt to cling to surfaces which will impair the reversible fan's ability to remove dust and dirt particles.

Care must be taken when cleaning this assembly, as the components can be damaged by careless handling and cleaning.

T726E-022

RIGHT SIDE - CROSS-FLOW FAN

2.36

Tigercat T726E Trencher

Controls and Operation USING THE FAN SWITCH IN THE EVENT OF AN ENGINE COOLING AND/OR HYDRAULIC OIL TEMPERATURE ALARM.

USING THE FAN CLEAN FUNCTION TO REMOVE DEBRIS DURING OPERATION The hydraulic fan circuit has a CLEAN function to aid in reducing debris build-up in the charge air cooler, radiator, oil cooler, A/C condenser and air intake door screens during operation. By “reversing” the direction of the fan, air flows in the opposite direction, thereby forcing dust and debris off the charge air cooler, radiator, oil cooler, A/C condenser and air intake door screens. Ensure that there are no personnel standing directly to the left of the machine when performing this operation, as dust and debris will fly out. Refer to FAN-SWITCH in THIS SECTION for more information.

In the event of an engine cooling temperature and/or hydraulic oil temperature alarm: 1. Stop operating the machine and leave engine at high idle speed.

726E-001

FAN SWITCH

2. Place the fan control switch in the FULL ON position until cooling is achieved.

3. If necessary use the CLEAN function to reverse fan flow and clean debris from the charge air cooler, radiator, oil cooler, A/C condenser and air intake door screens.

4. In severe operating conditions manual cleaning of debris may be required.

5. If the problem persists check engine coolant and/or hydraulic oil levels. Refer to OPERATING MACHINE ~ PRESTART CHECKS in THIS SECTION. 6. Return the fan control switch to AUTO and check for proper operation of the fan. In the event of a problem with the automatic control system the fan control switch should be placed in the FULL ON position while the machine is operating until the fan control can be properly repaired.

2.37

Tigercat T726E Trencher OPERATING MACHINE

Controls and Operation 2

If the machine has had a major service, a rebuild, or the hydraulic oil has been drained, refer to STARTUP PROCEDURE AFTER MAINTENANCE in SECTION 3 of THIS MANUAL.

DIPSTICK

•

•

Before operating the machine, follow the PERIODIC MAINTENANCE instructions in SECTION 3 of THIS MANUAL. Also, refer to the Engine Operator's Manual supplied with this machine.

FILTER SCREEN

••

PRE-START CHECKS: CUTTER SWITCH "OFF"

•

718E-037

FUEL TANK DIPSTICK/FILTER SCREEN 3. Check fuel level (Dipstick provided).

HYDRAULIC OIL RESERVOIR

KEY SWITCH "OFF"

T726E-005

•

••

SIGHT GAUGE HYD. OIL LEVEL

KEY & CUTTER SWITCHES OFF

•

1. Ensure key switch and cutter switch are in the OFF position.

SENDING UNIT LOW HYDRAULIC OIL

•

724E-004

PARKING BRAKE SWITCH HYDRAULIC OIL RESERVOIR 4. Check hydraulic oil level, the level should be between the ADD and FULL marks on the level gauge.

726E-012

2. Check parking brake for proper operation and and set parking brake ON (ENGAGED).

2.38

Tigercat T726E Trencher

Controls and Operation

OIL LEVEL DIPSTICK

••

726D-10

CHECK ENGINE OIL LEVEL

5. Check the engine oil level. The level of the oil must be between the ADD and FULL marks on the dipstick.

195-17

CHECK ENGINE COOLANT LEVEL

8. Check the engine coolant level.

WARNING PUMP DRIVE GEARBOX DIPSTICK

Shut off engine. Only remove filler cap when cool enough to touch with bare hands.

Slowly loosen cap to first stop to relieve pressure before removing completely.

•

724E-009

CHECK PUMP DRIVE GEARBOX OIL LEVEL 6. Check pump drive gearbox oil level (Dipstick provided) DIP STICK & TUBE

TRANSMISSION

•

••

726D-030

TRANSMISSION

CLEAN A/C CONDENSER, COOLER PACKAGE AND DOOR SCREENS

9. Clean A/C condenser, charge air cooler, radiator, oil cooler and door screens.

724E-079

7. Check transmission oil level (dipstick).

2.39

Tigercat T726E Trencher

Controls and Operation

ENGINE AIR PRECLEANER

AIR CHARGE VALVE

•

•• •• PRESSURE GAUGE

PRESSURIZED WATER SYSTEM 196-9A 14. Check pressurized water tank pressure gauge, located on the left side of the seat base.

AIR INTAKE PRECLEANER

726D-007

10. Check air intake pre-cleaner for foreign material build-up in air intake area or exhaust port area. Clean pre-cleaner air box daily or more often in high dust conditions.

15. Check all of the fasteners retaining the cutting drum tools and tighten them to the proper torque level.

16. Replace all worn or damaged cutting tools.

17. Replace the tool fastener whenever replacing a cutting tool.

18. Inspect the cutting drum for stress cracks.

• 726D-024

UNLOADER VALVE

19. Check that the cutting drum does not wobble due to worn bearings.

20. Never start or use a machine if the cuting drum has missing tools, missing tool fasteners or damage to the cutting drum.

AIR CLEANER UNLOADER VALVE

11. Check air cleaner unloader valve.

21. Shut down the machine immediately if you feel a vibration when the cutting drum is running.

22. Check that the cutting drum housing is clear of debris and obstructions and undamaged.

• 726D-020

FILTER RESTRICTION INDICATOR

FILTER RESTRICTION INDICATOR

12. Check engine air cleaner restriction indicator.

13. Be sure that all covers, guards and doors are securely fastened.

2.40

Tigercat T726E Trencher STARTING ENGINE:

Controls and Operation IMPORTANT: Allow a cold engine to warm up at LOW IDLE for at least five minutes before applying any load.

Check all gauges often during the warm up period.

1. Ensure that PRE START CHECKS have been performed and that the area is clear of personnel prior to starting the engine.

2. Sound horn to warn personnel of machine start-up.

CAUTION

NOTE: The engine will not turn over unless the parking brake is ENGAGED.

Do not start engine by shorting across starter terminals. Start engine only from operator's seat.

3. ENGAGE parking brake.

BULB TEST SWITCH

4. Turn the key switch to the RUN position. DO NOT START engine until the WAIT TO START warning light and display module light go OFF. Perform BULB TEST, see procedure on this page.

Press and hold the bulb test switch to ensure that all warning lights illuminate, then release switch.

Replace any lights that do not turn on.

RESTARTING AN ENGINE THAT HAS RUN OUT OF FUEL

5. Turn key switch to START position to crank engine. When engine starts, release key to RUN position. Observe the display module to ensure the engine oil pressure rises above 10 psi.

If the engine runs out of fuel, the fuel line must be primed: 1. Refill fuel tank completely.

2. Bleed the system according to engine manual procedures.

3. Crank engine until it starts. If it fails to start after 20 seconds, stop and wait for 2 minutes before trying again.

NOTE: Do not use ether to restart an engine that has run out of fuel.

WARNING DO NOT USE ETHER! Engine is equipped with an electric heater starting aid. Use of ether may cause an explosion and severe injury.

244-046

DISPLAY MODULE IMPORTANT: To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.

Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturer OPERATOR'S MANUAL.

NOTE: If the engine does not start after three attempts, check the fuel supply system.

Absence of blue or white exhaust smoke during cranking indicates no fuel is being delivered.

IMPORTANT: After engine has started, keep engine speed low until engine oil pressure registers on gauge. If it does not register within 10 seconds, stop engine and investigate cause.

2.41

Tigercat T726E Trencher

Controls and Operation

COLD WEATHER STARTING

IMPORTANT: To prevent damage to starter, do not engage starter motor for more than 15 to 20 seconds.

Wait 2 minutes between each attempt to start the engine. If engine fails to start, refer to engine manufacturer operator's manual.

WARNING The engine utilizes an air intake heater grid. To avoid personal injury and property damage, NEVER use a starting fluid. Starting aid fluids, which contain Ether, can cause an explosion.

2. During the engine warm-up period constantly monitor engine coolant temperature and engine oil pressure. Stop engine if any pressure or temperature does not meet the specification.

IMPORTANT: Cold start-ups can result in pump failure, refer to "HYDRAULIC OIL CHART" located in section 3, for recommended oil viscosities and temperature ranges.

3. Continue with MACHINE PREPARATION procedure when the engine coolant temperature registers NORMAL.

NOTE: Cold temperatures require the use of an engine block heater, hydraulic oil heater and fuel heater.

Preheating of hydraulic oil is recommended as standard procedure in cold weather.

1. Follow the STARTING ENGINE - CUMMINS ENGINE MANUAL instructions for this COLD WEATHER STARTING procedure, paying attention to the WAIT TO START warning light and the Display Module located on the instrument panel .

This YELLOW warning light on the instrument panel and Display Module will be ON, also the Display Module will show "WAIT TO START" WAIT TO START WARNING LIGHT

••

WAIT TO START LIGHT during the "key ON" engine pre-heat time.

Heating elements (grid heater elements) located in the engine air intake manifold are turned ON during cold weather conditions to heat the intake air when starting the engine.

The engine must not be started until this light goes OFF automatically.

T726E-005

2.42

Tigercat T726E Trencher MACHINE PREPARATION

Controls and Operation (l) Set the parking brake ON.

SYSTEM TEST AND WARM-UP

(m) Set engine speed to LOW IDLE position.

Before commencing harvesting operations, proceed with steps (a) through (n) to accomplish:

WARNING

• Warm up the hydraulic system.

Ensure that the saw blade has stopped rotating before leaving the cab.

• Test all systems for proper operation.

• Inspect for hydraulic oil leaks.

(n) Leave the cab and visually check hose connections and cylinders for leaks. Check under the machine for oil leaks.

CAUTION If any system fails to respond to the controls, stop the warm-up procedure and call a mechanic, otherwise serious damage to pumps and other components could result.

WARNING

Assuming machine was parked on level ground at last shutdown: Never use your bare hand to check for fluid leaks.

Fluid leaks undbber pressure may not be visible. When searching for leaks, wear work gloves and use a wrench or piece of wood to move hydraulic hoses. Do not grab hold of hydraulic hoses. Wear safety goggles for eye protection.

(a) Start engine. (b) Ensure gauges and warning lights are indicating normal operating conditions. (c) Check that all personnel are clear of the machine. (d) Increase engine speed to 1200 rpm. (e) Slowly raise and lower boom, check for proper operation.

With the attachment raised slightly off the ground: (f) Operate the attachment side shift system and check for proper operation (if applicable). (g) Tilt the attachment forward and back and check that it is operating correctly. (h) Steer the machine to the left and right. (i) When cold weather conditions exist, continue the process of warming up the hydraulic system by repeating steps (e) through (h) several times. As the hydraulic system warms up, engine speed can be increased gradually to the HIGH IDLE position. (j) Turn cutter on. (k) After completion of the warm-up and system testing, turn the cutter OFF, stop the drum and rest the attachment on the ground.

2.43

Tigercat T726E Trencher STOPPING ENGINE

Controls and Operation CARE OF THE MACHINE 1. Ensure that all fluid levels are always at the proper level. Use the preventative maintenance schedule in SECTION 3 of this manual .

IMPORTANT Stopping the engine immediately after it has been working under load can result in overheating and premature wear of the engine components. Follow the stopping procedure outlined below to allow the engine to cool.

2. Apply grease to all lubrication points at required intervals.

3. Do not apply load to a cold engine.

4. Close and secure all doors and access covers.

1. Park machine on level ground and rest the attachment on the ground.

5. Do not allow branches, twigs, leaves or other obstructions to build up around radiator intake doors or anywhere else on the machine.

Clean frequently.

2. If temperatures are high, run engine at high idle for three minutes our until temperatures drop, then reduce engine speed to LOW IDLE and let run for approximately three minutes to allow gradual dissipation of heat and also to reduce turbocharger speed. This will also prevent loss of coolant by after boil and possible hot spot damage to the engine.

6. Be sure that the attachment is resting on the ground before servicing or parking the machine.

7. Follow proper procedure for cleaning windows described in this section.

3. Do not race engine before shut-off.

4. Engage parking brake.

5. Stop engine by turning key switch to the OFF position.

WARNING • Before leaving the machine, park it in a safe position on level ground.

• Engage parking brake, lower the attachment to the ground.

• Never work behind, in front of, or below a machine that has been parked on a grade.

• Take additional precautions by placing the wheels against a rock, tree or other secure object.

IMPORTANT Only use the master disconnect to shut off a running machine in an emergency. A fault code will be logged by the ECM on the engine for improper shut down and power down.

2.44

Tigercat T726E Trencher

Controls and Operation •

Bent, dented or missing window retaining parts must be replaced immediately.

• Rubber materials used in mounting the window must be maintained in good condition.

• Identification of the polycarbonate originally used by Tigercat is hot stamped in a corner of the window to identify its composition. Do not use any replacement window without proof of its material composition. Do not substitute with any other materials.

• Skylights, cab structures, windows and window retaining parts must not be modified or replaced with components that are not approved by Tigercat.

RESISTANCE TO CHEMICALS The resistance of polycarbonate material to chemical exposure varies widely. Fortunately, polycarbonate materials have good resistance to diesel fuel, grease, hydraulic oil, kerosene and engine oil.

Other chemicals however can seriously weaken the polycarbonate.

DO NOT permit any of the following chemicals to come into contact with polycarbonate windows: • acetone • air conditioning refrigerant • ammonia • anti-freeze • benzene • brake fluid • carbon tetrachloride • cutting oils • gasoline • lacquer thinner • toluene • turpentine • xylene RESISTANCE TO WATER Polycarbonate material has good resistance to water up to approximately 65°C (150°F). Above this temperature the effect of water is timetemperature related. This means that the higher the water temperature, the shorter the time before the polycarbonate is adversely affected.

Exposing polycarbonate to repeated steam cleanings or high temperature pressure washing may result in crazing, a phenomenon that causes clouding of the surface. Crazing can ultimately result in a loss of physical strength and may precede a fracture.

CARE OF POLYCARBONATE WINDOWS IN CAB Some windows used in the cab are made from a polycarbonate resin thermoplastic. This material is a replacement for glass when improved strength, durability and safety is required.

Polycarbonate material is expected to resist heavy impact and to absorb high levels of energy when contacted by high velocity thrown objects such as wood chips, cutter tools or stones.

The extreme operating environment seen in logging applications heightens the need to regularly inspect and properly maintain polycarbonate cab windows.

Polycarbonate windows are an essential piece of operator protective equipment and should be maintained as such. It is important to note that cracks, chips, notches or scarring anywhere on the viewing surface or edges of the window will decrease ability to resist heavy impacts and therefore compromise effectiveness as operator safety protective equipment. Windows with these defects must be replaced immediately.

Refer to the next section for detailed information regarding inspection and maintenance of polycarbonate windows.

INSPECTION AND MAINTENANCE Daily inspection and maintenance is essential to confirm that the window’s ability to protect the operator has not been compromised.

• Inspect all windows daily and immediately after any impacts.

• Check for any damage to the window material or steel structure in the area of the window mounting.

• The edges of the polycarbonate window must be evenly and fully supported on a flat surface around the entire window opening at all times.

Bent or dented skylight structures must be replaced immediately. Bent or dented cab structures must be evaluated immediately for possible repair or replacement.

• The edges of the polycarbonate window must be free from cracks, chips, notches or scarring and must not be pinched or stressed.

These defects will decrease ability to resist heavy impacts. Windows with these defects must be replaced immediately.

• Cracks, chips, notches or scarring anywhere on the viewing surface of the window will decrease ability to resist heavy impacts.

Windows with these defects must be replaced immediately.

2.45

Tigercat T726E Trencher

Controls and Operation

CLEANING INSTRUCTIONS

CAUTIONS

The viewing surfaces of polycarbonate cab windows are specially treated with a hard coating to provide enhanced resistance to abrasion and ultra-violet (UV) radiation.

•

DO NOT use abusive cleaning procedures either by hand or pressure washing on polycarbonate windows.

•

DO NOT use brushes, razor blades, scrapers, squeegees or other sharp tools on polycarbonate windows.

•

DO NOT clean polycarbonate windows when the daytime temperature is high or in direct sunlight.

•

DO NOT use abrasive or highly alkaline cleaners on polycarbonate windows.

•

DO NOT use glass cleaners in either aerosol or non-aerosol containers to clean polycarbonate windows.

•

Failure to follow these cleaning instructions will shorten the service life of polycarbonate and may cause visual hazing, loss of light transmission and delamination of the polycarbonate hard surface coating.

The following instructions are provided to prolong the life of this protective hard coating.

1. Rinse the window thoroughly with lukewarm water 2. Using a soft cloth, cellulose sponge or chamois, gently wash the window with a mild solution of soap or detergent in lukewarm water. Do not scrub or use brushes or squeegees.

Brand name soaps and detergents recommended for cleaning polycarbonate are: • Fantastik • Formula 409 • Hexcel F.O. 554 • Joy • Lysol • Mr. Clean • Neleco-Placer • Pine-Sol • Top Job

CONCEALING HAIRLINE SCRATCHES The appearance of scratches and minor abrasions on the surfaces of polycarbonate windows can be minimized by using a mild automotive polish such as:

3. Rinse the window thoroughly with lukewarm water.

• • •

4. Dry the window with a moist soft cloth, cellulose sponge or chamois to prevent water spotting.

Johnson’s Paste Wax Novus Plastic Polish #1 and #2 Mirror Glaze Plastic Polish

Be certain to clean the polycarbonate window as outlined prior to application of an automotive polish. Refer to CLEANING INSTRUCTIONS.

5. To remove grease or oil, first rub lightly with a good grade of VM&P Naphtha or isopropyl alcohol followed by the same rinse, wash, rinse and dry procedure described in steps 1 to 4.

Refer also to RESISTANCE TO CHEMICALS for a list of chemicals which should not be permitted to come into contact with polycarbonate windows.

2.46

Tigercat T726E Trencher

Controls and Operation

GRAFFITI REMOVAL •

•

For removal of paints, marking pen inks, etc., the use of Butyl Cellosolve is generally effective. The use of masking tape, adhesive tape or lint removal tools works well for lifting off old weathered paints.

WINDOW SCREEN HANDKNOB

•

To remove labels, stickers, etc., the use of kerosene, VM&P Naphtha, or petroleum spirits is generally effective. When the solvent will not penetrate sticker material, apply heat (hair dryer) to soften the adhesive and promote removal.

173-25

SIDE WINDOW SCREEN

SIDE WINDOW SCREENS The side window screens (if equipped) can be removed to clean the windows. Screens are provided for the personal protection of the operator and must be reinstalled immediately after cleaning the windows.

Refer also to RESISTANCE TO CHEMICALS for a list of chemicals which should not be permitted to come into contact with polycarbonate windows.

A handknob is provided on both the inside and the outside. By unscrewing either (not both) of these knobs, the screen will be free to swing out on the hinges. Be aware that the screen will swing outwards with considerable force, if the door is open.

FIRE PRECAUTIONS Polycarbonate window material will ignite when exposed to an ignition source in excess of 427°C (800°F). When working around polycarbonate windows, observe similar fire precautions to those in place for wood.

All handles should be hand tight only at all times.

20231A R1

2.47

Tigercat T726E Trencher

Controls and Operation

TOWING INSTRUCTIONS

STEERING CYLINDERS

STEERING CYLINDERS

A malfunction of the machine's equipment may make towing necessary.

Towing is only recommended over short distances. It is always better to make repairs at the point where the machine is parked whenever possible.

1. To facilitate towing, the transmission must be placed in NEUTRAL, this will disconnect the wheels from the hydraulic motor.

SM47

NORMAL HOSE CONNECTIONS

HOSES ON ONE CYLINDER CROSS CONNECTED FOR TOWING

4. To allow the machine to steer while towing and prevent damage to the steering cylinders, cross hydraulic hoses on one of the steering cylinders. This will allow trapped oil to flow freely between the two steering cylinders, providing ease of turning with some dampening effect.

GEAR SHIFT LEVER

229-20

Shift the gear shift lever in the cab to NEUTRAL. 2. Raise the attachment off the ground and install the boom cylinder lift lock. Turn off the engine.

REAR CHASSIS

FRONT CHASSIS

•

•

RETAINING PIN

•

• LYNCH PIN

• 726D-039

LOCK BAR

LOCK BAR IN LOCKED POSITION

3. Install articulation lock bar.

2.48

Tigercat T726E Trencher

Controls and Operation

PARKING BRAKE ASSEMBLY

CAUTION

••

Before towing, the transmission must always be placed in NEUTRAL. Never tow a machine in gear. The extremely high forces created will cause significant damage to the components of the hydrostatic drive system and the transmission.

Never tow the machine at over 2 mph. This will cause significant damage to the transmission.

Never press the forward or reverse pedals while the transmission is in neutral. This will cause significant damage to the transmission.

STATIONARY DISCS

SPRINGS DRIVE SHAFT

••

•

••

6. Remove articulation lock bar.

ROTATING DISCS

7. The machine will be towed from the rear, making use of the towing lug at rear of machine underneath the bumper.

•

Ensure a vehicle of equal power and size is used for towing.

When going downhill, be sure to use a holdback vehicle as the machine is now without any effective braking.

724E-007 724E-008 724E-016

8. When towing is completed, install articulation lock bar, reconnect steering cylinder and parking brake hoses in proper location.

PARKING BRAKE

5. To deactivate the hydraulic parking brake it will be necessary to provide portable hydraulic pressure (250 psi) at the parking brake supply (C6) on the pilot manifold.

Block the wheels. Remove parking brake supply hose from pilot manifold (C6) and connect to a remote hydraulic power source.

Plug port on pilot manifold. Pressurize circuit to 250 psi to disengage parking brake.

2.49

Tigercat T726E Trencher TRANSPORTING INSTRUCTIONS

Controls and Operation ARTICULATION LOCK BAR

IMPORTANT: When transporting the machine, Chains must be used to prevent forward, reverse and side to side movement of the machine.

1. Position machine on level ground and steer machine into a straight ahead position.

2. Lower attachment to the ground, apply parking brake, stop engine and remove key.

The machine may be transported with the wheels on or off. If the wheels are removed the machine must be blocked so that the center joint is one inch or more above the truck bed.

WARNING To prevent movement of machine and possible injury, install articulation lock bar before performing any work in the center joint area.

With the wheels on or off:•

The attachment must be lowered to the truck bed.

•

The articulation lock bar must be installed.

3. Remove both retaining pins from the front and rear chassis and slide lock bar out of front chassis and into tube socket on rear chassis.

Line up holes at each end of lock bar with holes in chassis' and secure in place with both retaining pins. Install lynch pins.

IMPORTANT: Do not secure the machine to the truck ANYWHERE near the center joint area as this can seriously damage the center joint.

IMPORTANT: Use only transport regulation chains for this purpose, example; 5/16" grade 7 with a tensile strength of 96,000lbs/chain. Using inferior or damaged chains could cause the load to shift.

•

4. After work is completed, slide lock bar into front chassis storage position and hold in place with retaining pin. Store second retaining pin in rear chassis tube socket.

Install lynch pins.

The machine must be crossed chained (side to side) at both the front and rear axle area.

REAR CHASSIS

FRONT CHASSIS

The chains may be looped around the axles and hooked onto the links of the chain creating a full loop around the axles. The chains should be attached to the opposite sides of the trailer and evenly tensioned with the load binders.

•

•

RETAINING PIN

•

• LYNCH PIN

LOCK BAR

• 726D-039

1.

2.

3.

LOCK BAR IN LOCKED POSITION

ARTICULATION LOCK BAR IN LOCKED POSITION WHEELS AND ATTACHMENT BLOCKED MACHINE AND ATTACHMENT CROSS CHAINED FRONT AND REAR

3

••

• • ••

2 T726E.020

3

• •

3

•• • • 2

TRANSPORTING MACHINE 2.50

3

8

9

1

••

•• 2

•

•

3

Tigercat T726E Trencher LIFT BOOM CYLINDER LOCK

Controls and Operation

WARNING HELD IN POSITION WITH 'T' HANDLE

Always install lift boom lock before working on or around machine with boom raised.

• Always install 'T' handle retainer bolt • Use only to support boom and attachment.

•

Before performing work under the felling head or lift boom, ensure that the attachment is firmly supported on level ground, on solid stands or, install lift boom cylinder lock.

724E-023

LIFT BOOM

• CYLINDER

• • 'T' HANDLE

195-22

LIFT BOOM CYLINDER LOCK IN LOCK POSITION

Completely raise lift boom and place lock over one of the two cylinder rods with the open side facing down and wide end against the cylinder gland. Install 'T' handle retaining bolt through center hole.

Do not place yourself under the boom or felling head, while doing this. Do not damage the piston rod when installing the boom lift lock. Turn off the engine, turn key back to RUN position, press the PILOT RESET to activate the pilot oil system and SLOWLY lower the boom until the boom lift lock is securely in place. To remove the boom lift lock, start the engine, press PILOT RESET and raise the boom completely. Without placing yourself under the boom or felling head, remove the 'T' handle retainer bolt, remove the boom lift lock and secure it in place inside the rear compartment door using the 'T' handle retainer bolt.

2.51

LIFT BOOM CYLINDER LOCK IN STORAGE POSITION

Tigercat T726E Trencher FUSES AND RELAYS

Controls and Operation

724E-006

726E-005

FUSE PANEL - IN CAB FUSE AND RELAY PANEL - CAB Each major circuit on the vehicle is protected against current overload by fuses. The fuses and relays are located in two places on the machine.

The Cab fuse and relay panel is located in the compartment just below the main control panel as shown above. The main fuse and relay panel is located in the electrical box in the engine compartment as shown on the next page.

IMPORTANT

24 VOLT ELECTRICAL SYSTEM 2.52

Tigercat T726E Trencher

Controls and Operation

T726E-023 30369B

MAIN FUSE AND RELAY PANEL - ENGINE COMPARTMENT This main fuse and relay panel is located in the electrical box in the engine compartment on the rear wall.

2.53

Tigercat T726E Trencher Controls and Operation BATTERY DISCONNECT SWITCH, RELAY AND BATTERY LOCATIONS

5 AMP FUSE

• •• BATTERY DISCONNECT RELAY

724E-017

24863A

BATTERY DISCONNECT SWITCH BATTERY DISCONNECT - SWITCH The battery disconnect switch is located in the cab mounted to the side of the seat pedestal. The switch is used to activate the battery disconnect relay located in the battery compartment.

BATTERY COMPARTMENT The electrical system is 24 volts provided by two 12 volt (950 CCA) batteries connected in series.

The battery disconnect relay is used to connect/ disconnect the battery positive power to the machine electrical circuits.

As previously mentioned the battery disconnect relay is located in the battery compartment with the batteries. A 5 Amp fuse for the battery disconnect circuit is also located in the battery compartment. The fuse is installed in wire 350 and is located beside the battery disconnect relay.

When the battery disconnect switch is in the OFF position the battery disconnect relay is deenergized which disconnects the positive circuit from the battery to most of the electrical circuits on the machine. The only circuit that remains connected to the battery positive terminal is wire 350 at the battery disconnect switch.

When the battery disconnect switch is in the ON position, the switch connects wire 350 to wire 351 energizing the battery disconnect relay connecting the positive battery power to all electrical circuits.

This switch must be in the OFF position if the machine is not going to be operated for an extended period of time.

2.54

Tigercat T726E Trencher Controls and Operation RELAYS AND WIRE CONNECTIONS - (INSIDE CAB R.H. DOOR)

2.55

Tigercat T726E Trencher

1

Controls and Operation

2

3

4

••

••

•

•

10

••

6

7

•

8 9

•

•

••

5

•• •

11

13

• •• 12 14

•

1.

2.

3.

4.

5.

6.

7.

FIRE EXTINGUISHER FOOT REST BRAKE PEDAL DRIVE FOOT PEDAL LEFT DOOR SAFETY SWITCH LEFT CONTROL PANEL SEAT

T726E-002

8.

9.

10.

11.

12.

13.

14.

RIGHT JOYSTICK FUSE AND RELAY PANEL RIGHT DOOR SAFETY SWITCH INSTRUMENT PANEL HEATER/AC CONTROLS BATTERY DISCONNECT SWITCH PILOT MANIFOLD (UNDER CAB)

CAB CONTROLS AND COMPONENTS 2.56

Tigercat T726E Trencher

Controls and Operation

VEHICLE MOVING INSTRUCTIONS T726E MACHINES IMPORTANT: READ AND UNDERSTAND THESE SAFETY INSTRUCTIONS BEFORE OFF LOADING THIS MACHINE. SEE OPERATOR’S MANUAL IN PLASTIC POUCH BEHIND SEAT IN CAB FOR ADDITIONAL INFORMATION. 1. REMOVE SECURING PINS AND RED ARTICULATION LOCK BAR FROM BETWEEN FRAMES. IF DIFFICULTY EXPERIENCED, COMPLETE AFTER STEP 14 WHEN MACHINE CAN BE GENTLY STEERED AS IN STEP 17. WHEN RE-ENTERING CAB REPEAT STEPS 3, 4 AND 11.

2. TURN BATTERY DISCONNECT SWITCH ‘ON’. (LOCATED ON SIDE OF SEAT PEDESTAL.) 3. SIT IN OPERATOR’S SEAT AND CLOSE BOTH DOORS. 4. PLACE BOTH SEAT ARMRESTS IN DOWN, OPERATING POSITION. 5. ENSURE THAT PARKING BRAKE IS ENGAGED. 6. PRESS HORN SWITCH SEVERAL TIMES TO SOUND HORN TO ALERT PERSONNEL IN THE AREA OF YOUR INTENT TO START ENGINE. 7. PRESS AND HOLD BULB TEST SWITCH. ENSURE ALL WARNING LIGHTS AND WARNING HORNS FUNCTION. 8. TURN KEY SWITCH TO ‘RUN’ POSITION UNTIL ‘WAIT TO START’ LIGHT TURNS OFF. 9. TURN KEY SWITCH TO ‘START’ POSITION. AFTER ENGINE STARTS, RELEASE KEY. 10. PRESS PILOT RESET SWITCH TO ACTIVATE ALL MACHINE CONTROLS. WARNING: ALL CONTROLS ARE NOW OPERATIONAL. 11. PRESS AND HOLD THROTTLE BUTTON UNTIL ENGINE SPEED INCREASES TO 1200 RPM AS SHOWN ON THE TACHOMETER. 12. PULL BACK ON RIGHT LIFT / TILT JOYSTICK HANDLE TO RAISE ATTACHMENT HEAD. BEWARE OF OVERHEAD OBSTRUCTIONS. 13. DISENGAGE PARKING BRAKE BY PLACING SWITCH IN ‘OFF’, POSITION. 14. ENSURE AREA IS CLEAR BEFORE MOVING MACHINE AND THAT ANY PERSONNEL IN THE AREA ARE AT A SAFE DISTANCE. 15. PLACE DRIVE DIRECTION SWITCH IN FORWARD OR REVERSE AS REQUIRED. 16. PLACE DRIVE SPEED CONTROL KNOB TO CENTER POSITION. 17. MOVE MACHINE BY DEPRESSING DRIVE FOOT PEDAL .

18. STEER MACHINE BY SLOWLY TURNING STEERING WHEEL TO DESIRED DIRECTION. 19. IF TRANSPORTATION OF MACHINE IS TO CONTINUE, REINSTALL RED ARTICULATION LOCK BAR AND SECURING PINS BETWEEN FRAMES. 20. PUSH FORWARD ON RIGHT LIFT/TILT JOYSTICK HANDLE TO LOWER ATTACHMENT HEAD TO GROUND. 21. WHEN PARKED, ENSURE THAT PARKING BRAKE IS ENGAGED. 22. PRESS AND HOLD THROTTLE BUTTON TO DECREASE ENGINE SPEED TO IDLE. 23. TURN KEY SWITCH TO ‘OFF’ POSITION TO SHUT OFF ENGINE. 24. TURN BATTERY DISCONNECT SWITCH ‘OFF’.

IMPORTANT: TO PREVENT DRAINING THE BATTERIES TURN ‘OFF’ MASTER DISCONNECT IF THE VEHICLE IS TO BE PARKED FOR AN EXTENDED PERIOD OF TIME. (OVERNIGHT).

VEHICLE MOVING INSTRUCTIONS

2.57

Tigercat T726E Trencher

Controls and Operation

2.58

Tigercat T726E Trencher SECTION 3 - LUBRICATION & MAINTENANCE CONTENTS - SECTION 3 AIR CLEANER MAINTENANCE .................................................................. 3.20 AIR CONDITIONING SYSTEM, CHECKING ............................................... 3.24 BELT, ENGINE SERPENTINE, REPLACING .............................................. 3.29 BLINK CODES ............................................................................................. 3.39 CENTER JOINT LUBRICATION .......................................................................................... 3.25 MAINTENANCE ........................................................................................ 3.25 DRIVE SHAFT SPLINE LUBRICATION, MIDDLE AND REAR .................... 3.30 ELECTRONIC CONTROL MODULE ........................................................... 3.39 EMERGENCY EXITS, CHECK MONTHLY .................................................... 3.5 ENGINE SERPENTINE BELT, REPLACING ............................................... 3.29 FILTERS ENGINE AIR CLEANER ........................................................................... 3.20 FUEL FILTER/WATER SEPARATOR ...................................................... 3.16 FUEL TANK STRAINER ........................................................................... 3.17 HYDRAULIC OIL RETURN FILTERS ....................................................... 3.18 HYDROSTATIC CHARGE PUMP PRESSURE FILTERS ....................... 3.19 SERVICING GUIDELINES FOR OIL FILTERS ......................................... 3.19 FIRE PREVENTION ....................................................................................... 3.6 HYDRAULIC OILS ....................................................................................... 3.11 NEW MACHINE MAINTENANCE FIRST 125 HOUR INSPECTION AND SERVICE REPORT ....................... 3.2 INITIAL PRE-DELIVERY INSPECTION ...................................................... 3.2 TIGHTENING POINTS ............................................................................... 3.2 OIL LOST FROM LEAKAGE .......................................................................... 3.2 OIL SAMPLE COLLECTION PROCEDURES ................................................ 3.4 OIL SAMPLING PROGRAM .................................................................. 3.3, 3.4 PRESSURIZED WATER SYSTEM MAINTENANCE ................................... 3.22 PRIMING THE FUEL SYSTEM .................................................................... 3.16 REPLACING THE ENGINE SERPENTINE BELT ........................................ 3.29 SCHEDULED MAINTENANCE GENERAL ................................................................................................... 3.5 8 HOURS .................................................................................................... 3.7 40 HOURS .................................................................................................. 3.7 125 HOURS ................................................................................................ 3.8 250 HOURS ................................................................................................ 3.8 500 HOURS ................................................................................................ 3.9 1000 HOURS .............................................................................................. 3.9 2000 HOURS ............................................................................................ 3.10 SEASONAL .............................................................................................. 3.10 SERVICE AND LUBRICATION POINTS CHART .............................. 3.13, 3.15 STARTUP PROCEDURE AFTER MAINTENANCE ..................................... 3.26 TORQUE CHART ........................................................................................ 3.32 TORQUE, FLUID CONNECTIONS .................................................... 3.34, 3.36 TORQUE SPECIFICATIONS - GENERAL ................................................... 3.32 TRANSMISSION CHECK OIL LEVEL ......................................................... 3.25 WHEELS, INSTALLING ................................................................................. 3.2

JUNE, 2010

Tigercat T726E Trencher

Lubrication and Maintenance

PREVENTIVE MAINTENANCE SCHEDULE NEW MACHINE MAINTENANCE *INITIAL PRE-DELIVERY INSPECTION:PERFORM THE INITIAL PRE-DELIVERY INSPECTION USING Tigercat FORM NUMBERS 5340 AND 5347; "PDI AND 125 HOUR INSPECTION REPORT"

*FIRST 125 HOUR INSPECTION AND SERVICE REPORT:WITH THE OWNER'S MECHANIC PRESENT, PERFORM AN INSPECTION AND SERVICE ACCORDING TO THE Tigercat FORM NUMBERS 5340 AND 5347; "PDI AND 125 HOUR INSPECTION REPORT" THIS MUST BE COMPLETED WITHIN THE FIRST 125 HOUR TIME FRAME. *IMPORTANT: TO QUALIFY FOR CONTINUED WARRANTY, THIS REPORT MUST BE COMPLETED AND RETURNED TO Tigercat Industries Inc. WARRANTY DEPARTMENT.

Tightening points for First 125 hour inspection report:~

IMPORTANT!

All hydraulic connections

Wheels:

Hose clamps

When installing wheels, ensure that all paint has been removed from the mating surfaces of both the wheel disc and the flange of the axle to ensure metal to metal contact.

Center joint pin securing bolts Transmission securing bolts Engine mounting bolts

For additional instructions also refer to section 8 of the service manual.

Pump drive gearbox securing bolts Axle mounting bolts

Hour meter ~ maintenance:

Wheel retaining bolts

Check the engine hour meter on a regular basis to determine your scheduled maintenance times.

Cab securing bolts Pin retainers

The intervals and times on the scheduled maintenance chart in this manual are for normal operating conditions.

Any other loose nut, bolt or fitting

If your machine is being operated in difficult or severe conditions, you should service your machine at shorter intervals.

NOTE: Use of filters other than genuine Tigercat replacement filters is not recommended.

Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

*OIL LOST FROM LEAKAGE LEAKAGE RATE ONE DROP IN 10 SECONDS ONE DROP IN 5 SECONDS ONE DROP PER SECOND THREE DROP PER SECOND DROPS BREAK INTO STREAM

PER DAY 0.424 0.852 4.26 14.2 90.83

LOST 0IL (LITERS) PER PER MONTH YEAR 12.72 152.0 25.6 306.6 127.76 1533.1 425.86 5110.31 2725.5 32706.0

3.2

PER DAY 0.112 0.225 1.125 3.75 24.00

LOST 0IL (GALLONS) PER PER MONTH YEAR 3.36 40.0 6.75 81.0 33.75 405.0 112.5 1350.0 720.0 8640.0

Tigercat T726E Trencher

Lubrication and Maintenance

TIGERCAT OIL SAMPLING PROGRAM Effective for all 2008 model year 700 Series wheeled machines sold in U.S.A. and Canada, oil sampling must be performed during the warranty period as per the schedule below. Warranty coverage of Powertrain components, specifically hydrostatic pump and motors, boom/steer pump, axles, transfer case, pump drive gearbox and driveshafts is contingent on performance of regular oil sampling at the owner’s expense during the warranty period.

700 Series Location

First Sample

Follow-up Samples

Hydraulic Oil

125 hrs

Every 1000 hrs or 6 Months

Transmission

125 hrs

Every Oil Change (500 hours or 3 Months)

Pump Drive Gearbox

125 hrs

Every Oil Change (500 hours or 3 Months)

*Front & Rear Drive Axle 125 hrs

Every Oil Change (1000 hours)

* Machines T7260121 and up FIRST SAMPLE There will be no charge for the first oil samples required to be taken during the 125-Hour Inspection Service that will be scheduled and performed by your Tigercat dealer. Refer to NEW MACHINE MAINTENANCE in THIS SECTION. FOLLOW-UP SAMPLES All follow-up samples must be taken as indicated in the chart above and will be the responsibility of the machine owner.

Copies of all oil analysis results must be forwarded to the Tigercat Warranty Department for continued warranty coverage. If samples are taken using the Tigercat Oil Analysis Program, a copy of all results will automatically be sent to Tigercat.

Tigercat Oil Analysis Kits are available from your Tigercat dealer parts department. If required, arrangements can also be made with your Tigercat dealer to supply and perform all of the required followup oil samples.

Refer also to OIL SAMPLE COLLECTION PROCEDURES in THIS SECTION for sample valve and drain plug locations.

TIGERCAT OIL ANALYSIS KITS Each kit includes a Pre-paid Sample Bottle and Sample Information Form. Pre-printed mailing labels are also included to ensure all samples are quickly returned directly to the lab for immediate analysis and results within 24 hours of receipt.

The same type of sample bottle can be used for all types of oil testing including: Hydraulic Circuits, Final Drives, Axles, Gearboxes, Engines, etc.

To ensure accurate and meaningful results are obtained, each kit also includes detailed instructions on how properly collect, prepare and ship the oil samples.

Contact your Tigercat Dealer Parts Department to order Kits.

3.3

Tigercat T726E Trencher

Lubrication and Maintenance

TIGERCAT OIL SAMPLING PROGRAM OIL SAMPLE COLLECTION PROCEDURES Fill out the Sample Information Form (SIF) completely and accurately. When taking multiple oil samples, fill out all of the required SIF forms in their entirety, prior to taking any oil samples. Then, immediately package each completed SIF form together with the matching oil sample in the black outer shipping container as each individual sample is taken. This will reduce the possibility of mixing up or incorrectly identifying the SIF forms and oil samples. Incorrectly identified samples could result in a false warning alarm.

OIL SAMPLING CONNECTOR

•• WATER ABSORBING ELEMENT (COLOR BLUE)

•

The accuracy of the lab analysis results is very dependent on the quality of the oil sample taken.

Collection of clean oil samples that are representative of the main body of oil are essential if meaningful lab results are to be obtained.

Erroneous readings may result if proper collection, handling, packaging and shipping practices are not followed prior to the sample being tested by the lab.

To be able to accurately compare and trend the lab results over time, all follow-up samples should be consistently taken from the same location using the same techniques as all previous samples.

•

Ensure that all sample valves and drain plugs are clean and free of debris.

•

Remove the sample bottle cap only when ready to take the sample. Keep the cap clean – do not put it in your pocket or let it get contaminated in any way.

•

Do not allow any airborne dirt, etc. to enter the sample bottle.

•

Avoid contamination of the sample – replace the sample bottle cap immediately after filling the bottle to approximately ¾ full. All samples taken should be immediately forwarded to the lab for processing.

T726E-004

HYDRAULIC OIL RETURN FILTERS

Hydraulic Oil Samples: • Hydraulic oil samples should be taken from the circulating oil flow at operating temperature, with no functions actuated, using sample valves that are permanently located on the machine whenever possible.

•

To obtain a representative oil sample, sample valves must be purged before the actual oil sample is taken. Drain a minimum of 3 or 4 ounces of oil into a separate container and discard this oil using approved recycling methods.

•

Replace the dust cover on the sample valve immediately after taking the oil sample and sealing the sample bottle.

Transmission and Pump Drive Gearbox Samples: • These samples can be taken during the oil change process.

Contact your Tigercat dealer to purchase additional or replacement hydraulic sample valves or drain plugs.

In cases where oil samples must be pumped or otherwise drawn out of a reservoir or housing, a hand operated oil suction pump is also available from your Tigercat dealer.

3.4

•

To obtain a representative oil sample, ensure the oil is warm and has not settled very long (within 30 minutes of shutdown).

•

Place the required drain container under the machine to capture the used oil to be discarded using approved recycling methods.

•

Remove the drain plug and allow approximately 50% of the oil to drain, then place the sample bottle in the stream of draining oil to obtain a representative sample.

Tigercat T726E Trencher

Lubrication and Maintenance

GENERAL CAUTION All handles, steps and platforms must be kept free of grease, oil, fuel, mud, snow, ice and forest debris to prevent risk of personal injury.

Clean around filler caps before checking or adding fluids.

Before welding on machine be sure master switch is disconnected, two multi pin connectors on engine ECM are disconnected and the connector on Plus 1 electronic module are disconnected.

Release hydraulic pressures and clean around hydraulic fittings before breaking connection.

Plug or cap immediately.

When welding secure ground connection as close to working position as possible to prevent arcing across machined surfaces or through bearings.

Clean up spills as soon as possible.

Always use clean hydraulic oil and filters.

Drain dirty oil while still warm.

Clean away all accumulated debris. Clean up all traces of oil to avoid fires.

Do not exceed recommended fluid levels.

Service all hydraulic filters after the failure of a pump, motor, cylinder or valve. Failures of this nature could contaminate the entire hydraulic system.

Always have a fire extinguisher at hand.

For safety, always lower boom assembly to the ground when leaving cab, leaving machine unattended or during service.

Top up diesel fuel at end of each shift to reduce contamination by condensation.

For safety, when working under boom, always lower to ground, support properly or install lift boom cylinder locking device . (Refer to section 2 of this manual)

Clean up oil spills on walking surfaces and top of engine enclosure immediately.

Inspect the EXHAUST SYSTEM DAILY for any signs of LEAKAGE. Check for worn, cracked, broken, or damaged pipes or muffler.

Also check for missing or damaged bolts or clamps. Should any exhaust leaks or defective parts be found, repairs must be made immediately. Engine exhaust leaks can cause fires, DO NOT OPERATE the machine until the exhaust leak is repaired.

During daily operation of the machine, the occurrence of exhaust leaks are usually accompanied by a change or increase in engine exhaust noise levels. These audible warnings cannot be ignored. Should any exhaust leaks occur during operation, the machine must be shut down immediately and not put back to work until the necessary repairs have been completed.

CHECK EMERGENCY EXIT MONTHLY~ An alternate exit route is provided: right hand cab door. This exit is only to be used if the left hand cab door cannot be opened.

It is therefore essential that this emergency exit be checked at least once per month to ensure it is fully operational.

3.5

Tigercat T726E Trencher

Lubrication and Maintenance

SCHEDULED MAINTENANCE FIRE PREVENTION Maintaining your machine properly will greatly extend its life and reduce your operating costs.

WARNING

Fire can result in a machine loss which can be financially devastating.

WARNING, HOT FLUIDS AND HOT MACHINE SURFACES CAN CAUSE SERIOUS BURNS!

CAUTION AFTER transporting (trucking) a machine from one job sight to the next, open all doors and access panels and blow off any debris that could have re-positioned itself onto the engine and exhaust parts due to wind turbulence caused by the journey.

1. Foreign material and debris when allowed to accumulate, form a fuel source that when ignited is extremely difficult to extinguish. A thorough program of regular cleaning and washing will reduce the possibility of a fire starting. In the event a fire does start, the regular cleaning program will improve the chances of successfully extinguishing a fire.

2. Pay close attention to wiring and plumbing routings during maintenance, ensure that ALL wiring harnesses or hydraulic hoses are properly restrained and clamped to prevent damage from chaffing.

3. Read the fire suppression system manual and have the system serviced regularly by qualified personnel.

4. In case of fire lower the boom system to the ground and shut off the engine before discharging the fire suppression system.

Also refer to the SAFETY section of this manual for additional information on how to prevent fires from starting on the machine.

3.6

•

Before servicing the machine, allow the engine cooling system, fuel system, exhaust system, hydraulic system and machine surfaces to cool down.

•

Use a thermometer to check surface and system temperatures to ensure it is safe to begin service work.

•

DO NOT begin service work until the surface or system temperature has cooled down to below 100°F (38°C)!

Tigercat T726E Trencher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 8 HOURS (EVERY SHIFT):~

EVERY 40 HOURS:~

• Check engine oil level

• Drain compressed air tank

• Drain fuel/water separator

• Lubricate mid drive shaft slip joint 1-fitting, purge*

• Check air intake precleaner, clean as required

Note: Lubricate* mid drive shaft slip joint with machine articulated

• Check air cleaner unloader valve • Check air intake filter restriction indicator.

Replace primary filter if indicator is in red zone.

Replace secondary (safety) filter every third primary filter change to guarantee maximum performance and reliability.

• Lubricate center joint bearings, 2-fittings, purge* • Lubricate steering cylinder ends, 4-fittings, purge* • Air intake primary filter element, check restriction indicator at FULL rpm

• Check hydraulic oil level • Check pump drive gearbox oil level with dipstick • Check transmission oil level at dipstick • Lubricate tilt and lift cylinder ends, 8-fittings, purge* • Lubricate lift boom and tilt linkage, 10 fittings, purge* * USE LITHIUM BASED EP2 GREASE CONTAINING 5% MOLYBDENUM DISULFIDE Clean:~ • Potentially damaging debris from machine.

• Between air conditioner condenser and cooling assembly.

• Air intake (Turbo II) precleaner compartment.

Check:~ • For leakage around hydraulic components and flexible hoses • For loose nuts, bolts and fittings • Condition and tension of accessory drive belt.

• Water pressure gauge in cab (60 psi) for pressurized water system.

If the water system has been operated, refer to PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION for refilling and charging instructions.

• Conduct an overall visual inspection.

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

3.7

Tigercat T726E Trencher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 125 HOURS:~

Visually inspect for:• Frayed electrical wiring and hydraulic hose

• Perform 8 and 40 hour maintenance

• Wear in any other components

And in addition:~ • Lubricate rear axle pivot, 2-fittings, purge*

Clean/replace:• Air conditioner re-circulation filter • Cab fresh air filter

• Lubricate rear drive shaft slip joint , 1-fitting, purge* * USE LITHIUM BASED EP2 GREASE CONTAINING 5% MOLYBDENUM DISULFIDE

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

Check:• Engine coolant level

In Addition :~ • Drain and refill cutter drive gearbox oil

• All air intake system components (including charge air cooler) rubber elbows, connector hoses, tubes and clamps for damage, hardening, wear, cracks, leaks, loose clamps or loose hanger bracket hardware and repair immediately.

• Charge Air Cooler for damage, wear, cracks, or leaks and repair immediately.

• Fluid level in batteries unless maintenance free

EVERY 250 HOURS:~ • Perform 8 and 40 hour maintenance • Perform 125 hour maintenance Check:• Water system strainer • Park brake oil level

• Engine rpm.

And in addition replace:~

• Hydraulic oil restriction indicator for boom/saw circuit with engine at FULL rpm

• Oil in pump drive gearbox • Oil in transmission

• Hydraulic pump and motor securing bolts

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

• Check fuel tank filler screen • Torque tightening points as per new machine maintenance • Proper operation of pressurized water system.

(Refer to PRESSURIZED WATER SYSTEM in SECTION 2 of the OPERATOR'S MANUAL and PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION) Visually check for damage to:• Lift boom and tilt linkage • Front and rear frame • Center joint area • Attachment Make repairs immediately

3.8

Tigercat T726E Trencher

Lubrication and Maintenance

SCHEDULED MAINTENANCE EVERY 500 HOURS:~

EVERY 1000 HOURS:~

• Perform 8 and 40 hour maintenance

• Perform 8 and 40 hour maintenance

• Perform 125 hour maintenance

• Perform 125 hour maintenance

• Perform 250 hour maintenance

• Perform 250 hour maintenance

And in addition replace:~ • Engine fuel filter

• Perform 500 hour maintenance

• Hyd. Oil press. Filter, drive charge press. †

And in addition replace :~ • Engine air cleaner unloader valve

• Hyd. Oil press. Filter, attachment charge press. †

• Fuel intake strainer • Strainer in accumulator charge valve

• Hyd. Oil return filter, trav./steer /boom †

• Oil in axles, front and rear (machines 726T0121 and up) NOTE: Refer to the service manual section 8 for oil change procedure.

• Hyd. Oil return filter, pilot † • Lubricate door and door screen hinges.

Check:~ • All hydraulic pressures

And in addition:~ • Lubricate front and rear axle pinion grease seal (machines 726T0121 and up) 1-fitting per axle, purge.

• Transmission mounting, Check, re-torque • Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

Check:~ • Motion between center joint lugs • Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

† Use of filters other than genuine Tigercat replacement filters is not recommended.

3.9

Tigercat T726E Trencher

Lubrication and Maintenance

SCHEDULED MAINTENANCE SEASONAL:~

EVERY 2000 HOURS:~

Drain and refill hydraulic oil tank (and both front and rear axles on machines 726T0101 to 726T0120) with recommended hydraulic oil.

See "approved hydraulic oils". Also see section 8 of the service manual for axle draining procedure.

• Perform 8 and 40 hour maintenance • Perform 125 hour maintenance • Perform 250 hour maintenance • Perform 500 hour maintenance • Perform 1000 hour maintenance

Drain and refill pressurized water system.

(Refer to PRESSURIZED WATER SYSTEM in SECTION 2 of the OPERATOR'S MANUAL and PRESSURIZED WATER SYSTEM MAINTENANCE in THIS SECTION)

And in addition replace:~ • Oil in axles, front and rear (machines 726T0101 to 726T0120) NOTE: Refer to the service manual section 8 for oil change procedure.

• Oil in hydraulic reservoir • Water in pressurized water system • Replace turbocharger rubber inlet elbow and coupling - High temperatures in this area can cause the rubber to harden. See AIR INTAKE MAINTENANCE in THIS SECTION • Check ALL air intake tubing, rubber couplings and band clamps for signs of wear and leakage and repair immediately.

• Refer to diesel engine service manual and attachment manual for additional required maintenance at this scheduled time period.

NOTE: When refilling the hydraulic system, vent pumps, motors and valves of air by opening a plug or hose fitting located near or on top of the pumps, motors and valves until oil free of air is seen flowing out of the plug or hose fitting. Failure to vent air from the hydraulic system could cause serious damage to hydraulic components. Tighten plugs or fittings and clean up any spilled oil when completed.

NOTE: Changing strainers, filters and replacing the hydraulic oil tends to aerate the oil. For maximum pump life, the machine should sit for 1 hour after servicing to allow entrained air to escape from the oil prior to applying working pressures to the pumps.

NOTE: Check all hydraulic system components especially cooling fan for proper operation after hydraulic oil has been replaced.

3.10

Tigercat T726E Trencher

Lubrication and Maintenance

APPROVED HYDRAULIC OILS In addition to providing the vehicle with its normal operational functions, hydraulic oil is also used to fill the axle assemblies, apply brakes and operate differential locks.

Wet disk brakes in the axles require oil with specific properties to ensure reduced chatter and ensure proper lubrication of mechanical components.

Use only one of the following oils to fill or replenish the hydraulic system.

Chevron

Tractor hydraulic fluid (summer)

Chevron

Synthetic all-weather THF

Citgo

Tractor hydraulic fluid (33-310) (summer)

Imperial

Esso hydraul 56 (summer) Hydraul 50 (low visc) (winter)

Shell

Donax TD (summer) Donax TDL (winter)

Sun

Sunfleet th fluid (summer)

John Deere

Type J20C (hy-gardtm) (summer) Type J20D (hy-gardtm) (winter)

3.11

Tigercat T726E Trencher

Lubrication and Maintenance

MACHINES 726T0001 TO 726T0120

42725BENG

3.12

Tigercat T726E Trencher

Lubrication and Maintenance

MACHINES 726T0001 TO 726T0120 ®

Tigercat Model T726E SERVICE AND LUBRICATION POINTS REFER TO Tigercat OPERATOR'S MANUAL FOR FURTHER INFORMATION CAPACITY

COOLING SYSTEM

2

COOLANT FILTER

3

CENTER JOINT PIVOT

4

ENGINE OIL AND FILTER CUMMINS QSL9

5

FUEL FILTER

6

FUEL WATER SEPARATOR

7

FUEL CAP SCREEN

8

INTAKE FUEL STRAINER

9

AIR INTAKE PRECLEANER

10 11

CHK

42

60/40 ANTIFREEZE (GM6035M SPEC.)

11

REP

1

LUB

CHK

2

CHECK MOTION BETWEEN CHASSIS LUGS

REP

1

• SEE ENGINE MANUFACTURER'S MAINTENANCE MANUAL FOR PROCEDURES, CAPACITIES AND REPLACEMENT INTERVALS

REP

1

CHK

•

• DRN

QTY

DESCRIPTION

USG

LITERS

2000

1000

500

250

40

8

1

125

SERVICE POINT NO.

SERVICE EVERY ITEM

•

1

CLEAN OR REPLACE AS NECESSARY

1

DRAIN TANK, CLEAN OR REPLACE AS NECESSARY

CHK

1

CLEAN AS REQUIRED / INSPECT IMPELLER FOR WEAR OR DAMAGE REPLACE AS NECESSARY

AIR INTAKE PRIMARY FILTER ELEMENT

CHK

1

AIR INTAKE SAFETY FILTER ELEMENT

CHK

1

CHECK FILTER RESTRICTION INDICATOR. REFER TO 8 HOUR SCHEDULED MAINTENANCE FOR DETAILS (SECTION 3 IN MANUAL).

12

AIR CLEANER UNLOADER VALVE

CHK

1

REFER TO SECTION 3 IN MANUAL

13

AIR INTAKE CONNECTIONS

CHK

3

CHECK FOR LOOSE CLAMPS AND DAMAGED RUBBER COMPONENTS. REPLACE RUBBER COMPONENTS.

14

HYDRAULIC OIL FILTER STEER/FAN/BOOM

REP †

2

1 HYDRAULIC OIL FILTER 1 WATER ABSORBING HYDRAULIC OIL FILTER (BLUE)

15

HYDRAULIC OIL FILTER PILOT

REP †

1

16

HYDRAULIC OIL FILTER HYDRAULIC DRIVE CHARGE PRESSURE

REP †

2

A/C & HEATER FILTERS

REP †

2

17

CHK CHK

REP REP

CHK

CLEAN OR REPLACE AS NECESSARY CHECK OIL LEVEL. FILL WITH MIL-L-2105C OR API-GL-5 BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140

18

PUMP DRIVE GEARBOX

CHK

D/R

4

1.1

19

TRANSMISSION - 2 SPEED

CHK

D/R

4.9

1.3

20

AXLES: FRONT REAR

53 31

14 8.2

DRAIN AND REFILL COMPLETE SYSTEM ANNUALLY OR AS REQUIRED SEASONALLY. MUST MEET JOHN DEERE TYPE J20C (HY-GARD) SUMMER OR TYPE J20D (HY-GARD) WINTER

21

HYDRAULIC RESERVOIR

D/R

220

58

DRAIN AND REFILL COMPLETE SYSTEM ANNUALLY OR AS REQUIRED SEASONALLY. MUST MEET JOHN DEERE TYPE J20C (HY-GARD) SUMMER OR TYPE J20D (HY-GARD) WINTER

22

PARKING BRAKE

D/R

0.5

0.13

FILL WITH ML-L-2105C OR API-GL-5 LUBRICANT GRADE/WEATHER TEMPERATURE: BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140

23

CUTTER DRIVE GEARBOX

13

3.4

CHECK LEVEL, SEE DRUM DRIVE OPERATING INSTRUCTIONS, FILL WITH 80W - 140 SYNTHETIC OIL ONLY

24

PRESSURIZED WATER SYSTEM

25

ACCUMULATOR CHARGE VALVE STRAINER

26

WATERSYSTEM STRAINER

D/R D/R

CHK

CHK

D/R

CHK

TEST

CHECK SYSTEM PRESSURE, (60 PSI) REFER TO SECTION 2 OPERATOR'S MANUAL.

D/R REP CHK

1 SHUT-OFF WATER SUPPLY

726ET LUBECHART.XLS

3.13

Tigercat T726E Trencher

Lubrication and Maintenance

MACHINES 726T0121 AND UP

47733BENG

3.14

Tigercat T726E Trencher

Lubrication and Maintenance

MACHINES 726T0121 AND UP ®

Tigercat Model T726E SERVICE AND LUBRICATION POINTS REFER TO Tigercat OPERATOR'S MANUAL FOR FURTHER INFORMATION CAPACITY

COOLING SYSTEM

2

COOLANT FILTER

3

CENTER JOINT PIVOT

4

ENGINE OIL AND FILTER CUMMINS QSL9

5

FUEL FILTER

6

FUEL WATER SEPARATOR

7

FUEL CAP SCREEN

8

INTAKE FUEL STRAINER

9

AIR INTAKE PRECLEANER

10

CHK

42

60/40 ANTIFREEZE (GM6035M SPEC.)

11

REP

1

LUB

CHK

2

CHECK MOTION BETWEEN CHASSIS LUGS

REP

1

• SEE ENGINE MANUFACTURER'S MAINTENANCE MANUAL FOR PROCEDURES, CAPACITIES AND REPLACEMENT INTERVALS

REP

1

CHK

•

• DRN

QTY

DESCRIPTION

USG

LITERS

2000

1000

500

250

40

8

1

125

SERVICE POINT NO.

SERVICE EVERY ITEM

•

CHK

1

CLEAN OR REPLACE AS NECESSARY

1

DRAIN TANK, CLEAN OR REPLACE AS NECESSARY

CHK

1

CLEAN AS REQUIRED / INSPECT IMPELLER FOR WEAR OR DAMAGE REPLACE AS NECESSARY

AIR INTAKE PRIMARY FILTER ELEMENT

CHK

1

11

AIR INTAKE SAFETY FILTER ELEMENT

CHK

12

AIR CLEANER UNLOADER VALVE

CHK

13

AIR INTAKE CONNECTIONS

CHK

14

HYDRAULIC OIL FILTER STEER/FAN/BOOM

15 16

CHK

1

CHECK FILTER RESTRICTION INDICATOR. REFER TO 8 HOUR SCHEDULED MAINTENANCE FOR DETAILS (SECTION 3 IN MANUAL).

1

REFER TO SECTION 3 IN MANUAL

3

CHECK FOR LOOSE CLAMPS AND DAMAGED RUBBER COMPONENTS. REPLACE RUBBER COMPONENTS.

REP †

2

1 HYDRAULIC OIL FILTER 1 WATER ABSORBING HYDRAULIC OIL FILTER (BLUE)

HYDRAULIC OIL FILTER PILOT

REP †

1

HYDRAULIC OIL FILTER HYDRAULIC DRIVE CHARGE PRESSURE

REP †

2

17

A/C & HEATER FILTERS

REP †

2

18

PUMP DRIVE GEARBOX

CHK

D/R

4

1.1

19

TRANSMISSION - 2 SPEED

CHK

D/R

4.9

1.3

20

AXLES: FRONT REAR

D/R D/R

26.5 24.6

7.0 6.5

21

PINION GREASE SEAL - FRONT/REAR AXLE

LUB

22

HYDRAULIC RESERVOIR

23

PARKING BRAKE

24

CUTTER DRIVE GEARBOX

25

PRESSURIZED WATER SYSTEM

26

ACCUMULATOR CHARGE VALVE STRAINER

27

WATERSYSTEM STRAINER

REP REP

CHK

CHK

CHK

D/R

D/R

CHK

TEST

CHECK OIL LEVEL. FILL WITH MIL-L-2105C OR API-GL-5 BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140 ONE FITTING PER AXLE LITHIUM BASE EP2 GREASE

PURGE

D/R

220

DRAIN AND REFILL COMPLETE SYSTEM ANNUALLY OR AS REQUIRED SEASONALLY. MUST MEET JOHN DEERE TYPE J20C (HY-GARD) SUMMER OR TYPE J20D (HY-GARD) WINTER

58

0.5

0.13

FILL WITH ML-L-2105C OR API-GL-5 LUBRICANT GRADE/WEATHER TEMPERATURE: BELOW -10ºF(-23ºC) USE 75W-90 UP TO 100ºF(38ºC) USE 80W-90 ABOVE 100ºF(38ºC) USE 85W-140

13

3.4

CHECK LEVEL, SEE DRUM DRIVE OPERATING INSTRUCTIONS, FILL WITH 80W - 140 SYNTHETIC OIL ONLY CHECK SYSTEM PRESSURE, (60 PSI) REFER TO SECTION 2 OPERATOR'S MANUAL.

D/R REP CHK

CLEAN OR REPLACE AS NECESSARY

1 SHUT-OFF WATER SUPPLY

726ET LUBECHART.XLS

3.15

Tigercat T726E Trencher

Lubrication and Maintenance

FILTERS - REMOVE AND REPLACE IMPORTANT: Failure to service and replace filters at the proper intervals specified in the manufacturer's manuals, could cause damage to the machine and result in the product warranty becoming NULL and VOID. Check Tigercat parts catalog for replacement filters.

FUEL FILTER/WATER SEPARATOR

T726E-035

T726E-033

FUEL FILTERS

Two fuel filters are supplied with the engine. Refer to the engine manufacturer's operation and maintenance manual for service information and replacement interval.

IMPORTANT: Filters that are an integral part of the engine (fuel and lubricating oil) should be serviced and replaced according to the engine manufacturer's operation and maintenance manual.

FUEL FILTERS

IMPORTANT: If the fuel supply is dirty, the fuel filter must be replaced more frequently than recommended in the owner’s manual. Operating the machine with a clogged fuel filter will result in low engine power. It is also recommended that the fuel/water separator bowl be drained daily.

When installing a new fuel filter, DO NOT pre-fill with diesel fuel, or engine fuel pump damage will result. This type of failure is not warrantable by the engine manufacturer.

To prolong the operating life of the fuel filter, ensure that the fuel supply storage tank is clean and free of water and that the fuel is pre-filtered prior to adding it to the machine.

Tigercat generally does not recommend the prefilling of fuel filters due to the risk of damage to the fuel system caused by unfiltered fuel. Unfiltered fuel used to pre-fill filters enters directly into the fuel system. Contaminants in unfiltered fuel can cause significant and costly damage to the engine.

The cleanliness of fuel cannot be guaranteed unless it is always prefiltered before use.

PRIMING THE FUEL SYSTEM Whenever the fuel system has been drained, disconnected or the fuel filters have been replaced, the fuel system must be primed to remove any air from the system. Refer to the engine manufactures operation manual for more information on priming the fuel system.

3.16

Tigercat T726E Trencher

Lubrication and Maintenance

FUEL TANK STRAINER This is a stainless steel fuel strainer, screwed on to the inlet pipe of the engine fuel feed line inside at the bottom of the fuel tank.

Changing or cleaning the strainer: NOTE: This should only be required if excessive quantities of foreign material has built up inside the tank.

1. Park machine on level ground, install articulation lock bar, lower attachment to ground, stop engine, engage parking brake and block wheels.

STRAINER

••

2. Drain the fuel tank. (plug in bottom) 3. Remove the round fuel tank cleanout cover plate and “O” ring from the access hole.

4. Before removing the strainer, clean any debris from the bottom of the tank and wipe it clean.

726-008.PLT

5. Remove the fuel strainer using the hex on the end of strainer. Carefully clean the strainer (it may be damaged by rough handling).

6. Check for a buildup of foreign materials where the strainer threads on to the pipe and elbow.

7. Reinstall the strainer using the hex on end.

8. Reinstall fuel tank cover plate with “O” ring.

9. Refuel and check for leaks. Start the engine and check for leaks again.

3.17

FUEL TANK STRAINER

Tigercat T726E Trencher

Lubrication and Maintenance 7. Remove used gasket and clean gasket seat in head.

OIL SAMPLING CONNECTOR

8. Apply clean oil to new round gasket surfaces.

••

•

WATER ABSORBING ELEMENT (COLOR BLUE)

•• ••

726E-044

•

CUTTER PUMP CHARGE PRESSURE FILTER

FILTER HEAD

GASKET

•

HYDRAULIC OIL RETURN FILTERS FILTER ELEMENT

HYDRAULIC OIL RETURN FILTERS / CUTTER CHARGE PUMP FILTER

FILTR_SEALS2

ROUND SECTION GASKET INSTALLATION

There are two full flow filters mounted on filter heads with built-in bypasses. These filters are for boom/steer/fan and low pressure return. The (blue) filter contains a water absorbing element. There is also a full flow filter for the cutter charge pump pressure. For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. Changing the filters: 1. Park machine on level ground, install articulation lock bar, lower attachment to ground, stop engine, pull parking brake ON and block wheels.

9. Install new round section gasket into inside lip of the two larger filters only.

NOTE: The cutter charge pump filter has an attached gasket.

10. Screw on new filter until filter makes contact with filter head.

11. Tighten filter until top edge makes metal to metal contact with head. (Approximately 1 1/2 additional turns after gasket contact) 12. Start the engine and check for leaks.

2. Wipe clean the area around the filter and head.

3. Place rags below to catch the spillage of oil.

4. Wearing face protection (in case of an oil squirt), unscrew the old filter. Dispose of old filter and any oil properly.

5. Check the seating area for the gasket on the filter head and wipe it clean.

6. The Tigercat spin-on filter element is supplied with two gaskets. The round ('O' ring style) section gasket is used for all the return filters.

Discard the square section gasket.

IMPORTANT! Contaminated hydraulic fluid can lead to premature failure of hydraulic components and costly repairs. Filters must be replaced at the recommended time intervals, Refer to SCHEDULED MAINTENANCE in THIS SECTION. Use of hydraulic oil filters other than the Tigercat brand could lead to severe wear and rapid failure of hydraulic system components.

3.18

Tigercat T726E Trencher

Lubrication and Maintenance

HYDRAULIC FILTER SERVICING GUIDELINES IMPORTANT! NEVER PRE-FILL HYDRAULIC FILTERS

•• CHARGE PRESSURE FILTER

726D-016

Tigercat generally does not recommend the prefilling of spin-on filters due to the risk of damage to the hydraulic system caused by unfiltered oil.

Unfiltered oil used to pre-fill filters enters directly into the hydraulic circuit. Contaminants in unfiltered oil can cause significant and costly damage to hydraulic valves, pumps and motors. The cleanliness of hydraulic oil cannot be guaranteed unless it is always prefiltered before use.

• PILOT AND CASE DRAIN RETURN FILTER

CHARGE/CASE/PILOT FILTERS

HYDROSTATIC CHARGE PUMP PRESSURE AND PILOT/CASE DRAIN FILTERS There are two other full flow filters mounted on filter heads with built-in bypasses. One is in the output side of the hydrostatic drive charge pump and the other is the case drain and pilot return.

For service and replacement intervals see SERVICE AND LUBRICATION CHART in THIS SECTION. Changing the filters: 1. Park machine on level ground, install articulation lock bar, lower cutting head to ground, stop engine, engage parking brake and block wheels.

2. Wipe clean the area around the filter and head.

3. Place rags below to catch the spillage of oil.

4. Wearing face protection (in case of an oil squirt), unscrew the old filter. Dispose of old filter and any oil properly.

5. Check the seating area for the gasket on the filter head and wipe it clean.

6. The new filter has an attached gasket. Apply hydraulic oil to the gasket surface.

7. Screw on the new filter until the gasket makes contact with the seat in the filter head.

8. Hand tighten filter an additional 1/2 turn only.

9. Start the engine and check for leaks.

3.19

Tigercat T726E Trencher

Lubrication and Maintenance

AIR CLEANER MAINTENANCE

AIR CLEANER

726D-008

726D-007

ENGINE AIR CLEANER

AIR INTAKE PRECLEANER

ENGINE AIR PRECLEANER The engine air precleaner cleans engine air before it reaches the air cleaner filter elements. It removes contaminants such as dust, powder, insects, rain and snow. This precleaner is self powered and self cleaning requiring virtually no maintenance. However, it should be checked periodically to make sure that foreign materials have not plugged the intake area or the exhaust port area.

The air cleaner on this machine uses two filter elements; a primary element and a safety element accessible in the hydraulic pump compartment.

To ensure maximum engine protection, it is important that the elements be serviced correctly and at proper servicing intervals.

NOTE: The precleaner compartment should be checked and cleaned out daily to ensure proper operation of the precleaner.

CONTAMINANTS ARE BLOWN OUT OF SPECIAL DISCHARGE PORTS BY HIGH VELOCITY, AIR POWERED ROTOR

AS THE AIR SPINS, CENTRIFUGAL FORCE SEPARATES FOREIGN MATERIALS FROM THE CLEAN AIR

•

•

SPINNER BLADE

•

•• •

SPINNER ARM

•

FILTER RESTRICTION INDICATOR

726D-020

FILTER RESTRICTION INDICATOR

A filter restriction indicator is mounted to the output side of the air cleaner. This should show green when the engine is running at FULL RPM. Service is required only if the indicator shows red.

•

THE TURBO II PRECLEANER HAS SPECIALLY DESIGNED BLADES THAT CAUSE THE INCOMING AIR TO SPIN

•

ONLY THE PURIFIED AIR GOES TO THE AIR FILTER

TURBO II PRECLEANER OPERATION NOTE: Remove the precleaner every 500 hours and use a mechanics mirror to inspect the spinner assembly, check to ensure the spinner arms are not worn and the spinner blades are intact. In high dust conditions and especially abrasive dust and dirt the spinner arms and blades may wear rapidly.

726D-008

TURBO 2

If wear is noticed replace the spinner assembly immediately.

UNLOADER VALVE

AIR CLEANER UNLOADER VALVE

AIR CLEANER UNLOADER VALVE This rubber valve on the body of the air cleaner housing should be checked before every shift (8 hours). If this valve is missing, damaged or has turned hard, it will cause the air cleaner to become ineffective. The valve should suck closed at 1/3 throttle.

3.20

Tigercat T726E Trencher

Lubrication and Maintenance

This valve should be replaced every 1000 hours.

Remove the unloader valve from the tube of the air cleaner housing. Check and clean the valve. A good valve is soft and flexible. If plugged, be sure to check the filter elements as they may need replacing as well. Reattach the valve to the body.

• SAFETY ELEMENT

When operating in high dust conditions, the unloader valve should be checked and squeezed every 2 hours to release dust buildup.

In addition to the LUBRICATION AND MAINTENANCE SCHEDULE outlined in THIS SECTION, the following instructions should also be noted: The most common and damaging servicing problems are:

•

OVER SERVICING Filter elements increase in dust cleaning efficiency as dust builds up on the media. Looks can be deceiving. A filter that looks dirty may actually more efficient than one that is clean. A filter with dust build up on the media reaches nearly 100% dust cleaning efficiency. Only when a filter is so clogged with dirt that air restriction goes beyond engine manufacturer's guidelines, should a filter be replaced.

NOTE: This does not apply to hydraulic oil or diesel engine oil filters.

SERVICING Engine exposure to dust during servicing is a large reason for engine damage due to dust.

Abrasive dust can easily enter the intake system once the air cleaner cover and protective filter element are removed for replacement. The safety element does reduce this risk but it should also be replaced at every third primary element change.

726D-006PLT

PRIMARY ELEMENT

AIR FILTER ELEMENTS

IMPORTANT STEPS TO FOLLOW WHEN CHANGING FILTER ELEMENTS 1. Release the cover latch gently to reduce the amount of dust dislodged.

2. Avoid dislodging dust from filter element(s) by gently pulling the element off the outlet tube.

3. Check your old filter sealing surfaces, This will help detect foreign material on the sealing surface that is causing leakage.

NOTE: Filter elements should never be cleaned and reused. Cleaning causes dust to bypass the filter and be deposited on the inner surface of the filter media. The dust is then drawn directly into the engine.

4. Always clean the inside of the outlet tube.

5. Always clean the sealing surface of the outlet tube before inserting a new filter element.

6. Inspect the new filter for damage.

7. Insert the new filter properly. Apply pressure to the outer rim of the filter not the flexible centre.

8. Check connections and ducts for an air tight fit. Ensure that all clamps, bolts and connections are tight. Check rubber elbows for splits or wear points. Leaks in these locations send dust directly to the engine.

3.21

Tigercat T726E Trencher

Lubrication and Maintenance

PRESSURIZED WATER SYSTEM MAINTENANCE

FILL & CHARGE PRESSURIZED WATER SYSTEM

OPERATION:

a. Completely discharge all water and compressed air from the tank via the hose end nozzle.

Turn the hand operated ball valve (shut off valve) under the seat to the ON position to draw water from the pressurized holding tank at the rear of the machine. When not in use turn the water supply OFF at this valve and relieve the pressure in the rubber hose, under the operator's seat.

HOSE

CAUTION Never remove fill plug before de-pressurizing tank or injury may result. This fill plug incorporates a vent hole to release air pressure from the tank before the threads disengage. DO NOT replace this fill plug with any substitute.

WATER SHUT OFF VALVE (SHOWN CLOSED)

9

•

196-16A

••

••

PRESSURIZED WATER SYSTEM CONTROL VALVE (UNDER SEAT)

The pressure gauge on the side of the seat should read 4.14 Bar (60 psi).

•

PRESSURE GAUGE TANK FILL PLUG

•

•

726D-44

AIR CHARGE VALVE T726E-002

PRESSURIZED WATER SYSTEM

Refer also to FIRE PREVENTION in SECTION 1 of THIS MANUAL.

b. Slowly unscrew fill plug two full turns. Any remaining air in the tank will be heard expelling from the special fill plug. Do not remove fill plug until all air has been expelled. c.

SYSTEM TEST: This system should be tested once every month by turning the shut-off valve ON and expelling water from the hose end nozzle. A very forceful discharge of water should be obtained. If the water does not come out with force (with pressure gauge reading 4.14 Bar (60 psi) the system needs to be PURGED. Refer to PURGING PRESSURIZED WATER SYSTEM in THIS SECTION. After testing, the tank must be refilled and pressurized to 4.14 Bar (60 psi) Refer to the following FILL AND CHARGE procedure. This FILL AND CHARGE procedure should be carried out yearly.

PRESSURIZED WATER SYSTEM

Close water shut off valve and fill tank with water. Tank capacity is approx. 16 liters (4.2 gals). NOTE: When temperatures below 0° C (32°F) are anticipated, add a Nontoxic R. V. Antifreeze or other suitable antifreeze solution to the water (50% water, 50% R. V. antifreeze).

NOTE: Most Nontoxic RV Anti freeze solutions contain corrosion and algae inhibitors, it is therefore suggested that this solution be added to the water on a continual basis regardless of temperature conditions.

d. Install fill plug in tank. e. Charge water tank with compressed air by connecting an air hose to air charge valve on side of seat near the pressure gauge.

Pressurize to 4.14 Bar (60 psi) as indicated on pressure gauge.

3.22

Tigercat T726E Trencher

Lubrication and Maintenance

PURGING PRESSURIZED WATER SYSTEM Purging should be carried out whenever the flow of water does not forcefully discharge from the end of the hose with the pressure gauge reading 4.14 Bar (60 psi). a. Follow procedures (a) and (b) from FILL & CHARGE PRESSURIZED WATER SYSTEM and continue with: b. Close the water shut off valve and add 7.6 Liters (2 gallons) of clean water to the tank.

Reinstall the fill plug and charge the system with 4.14 Bar (60 psi) of compressed air through the charging valve. c.

Open the shut off valve and completely discharge all the water in the tank via the hose end nozzle.

d. If a forceful discharge was not achieved, repeat the purging procedure. If a second purging does not work, remove lines and check for an obstruction. e. After the purging operation, fill and charge the system as described in FILL & CHARGE PRESSURIZED WATER SYSTEM in THIS SECTION.

3.23

Tigercat T726E Trencher

Lubrication and Maintenance

CHECKING THE AIR CONDITIONING SYSTEM

CAUTION

Any service work must be performed by authorized A/C technicians. The system should be charged with R134a refrigerant only. PAG (polyalkeylene glycol) oil should be present in the system and must be used on 'O' ring fittings during assembly.

• If using compressed air for cleaning, use at 2.07 Bar (30 psi) or less.

• Always use personal protective equipment to guard against flying debris.

A/C SYSTEM TOTAL CAPACITIES PAG OIL R134a REFRIGERANT (polyalkylene glycol) 1.23 kg (2.75 lbs)

SERPENTINE BELT

0.2 kg (7 oz)

IDLER PULLEYS

The compressor and charge valves and receiver drier are accessed from the left side engine compartment. The evaporator core is accessed on the left hand side of the machine.

••

ALTERNATOR

••

Use this checklist to maintain system between service intervals.

••

BELT TENSIONER

•

A/C COMPRESSOR

••

••

•

••

a. Check serpentine belt. Ensure that all of the ribs on the serpentine belt align with the grooves on the engine pulleys. b. Check cab air filters and clean as required.

T726E-013

REMOVE TWO THUMB SCREWS TO ACCESS FILTER

••

726D-031

c.

CHECK A/C CONDENSER CORE

AIR FILTER

208-19

Check the condenser core for dirt and debris.

Clean as required. Refer to CLEANING A/C CONDENSER AND COOLING ASSEMBLY in SECTION 2 of the OPERATOR'S MANUAL.

REMOVE SIX BOLTS TO ACCESS FILTER

•

d. Check the evaporator core and the inside of the A/C housing for dirt and debris. Clean as required. e. Run air conditioning system for 3 - 5 minutes. f.

Check to see that compressor clutch will engage.

NOTE: It is recommended that during cold weather when the A/C system is not in use, that it be run for a period of 5 minutes every 2 weeks. This will circulate oil to all components of the A/C system.

726E-011

3.24

FRESH AIR FILTER

WATER PUMP

Tigercat T726E Trencher

Lubrication and Maintenance

CENTER JOINT

TRANSMISSION:

MAINTENANCE OF CENTER JOINT Maintenance in this area is usually limited to:

By carefully following these procedures, the service life of the transmission will be extended and costly down time will be avoided.

a) Regular lubrication of the two center joint grease fittings to purge the pivot bearings of debris and water. Refer to SERVICE AND LUBRICATION POINTS in THIS SECTION for lubrication intervals. Use only high quality, lithium based EP2 grease containing molybdenum disulphide.

For additional information, refer to TRANSMISSION in SECTION 8 of the SERVICE MANUAL. TRANSMISSION

DIP STICK & TUBE

••

••

b) Visually checking the center joint pivot for looseness every 1000 hours. With an observer on the ground, keeping well clear of the center joint area, perform the following test to check for looseness of center joint.

1. Have operator lift the attachment off the ground and then rapidly raise and lower the head several times to "bounce" machine.

2. As machine bounces, check for motion between the front and rear chassis frame lugs. Also check for a "clunking" sound at the center joint area.

TRANSMISSION

724E-079

CHECK OIL LEVEL Check oil level at end of every 8 hour shift.

Procedure: • Park on level ground, lower felling head, set parking brake on and turn off engine.

REAR CHASSIS

FRONT CHASSIS

CHECK FOR MOVEMENT IN THIS JOINT AREA

•

Clean dirt and debris from around oil dipstick and check oil level.

•

If required: add the recommended grade of oil through oil fill plug located on top of transmission housing.

Do not overfill.

724D-D11

1000 HOUR CHECK

3. Movement between front and rear chassis lugs or clunking of the pivot indicates a loose joint and preload must be checked.

Refer SECTION 11 of the SERVICE MANUAL for more information..

3.25

Tigercat T726E Trencher

Lubrication and Maintenance

START-UP PROCEDURE AFTER MAJOR MACHINE MAINTENANCE

NOTE: If the axles were drained of oil, refer to FILLING THE AXLES in SECTION 8 of THE SERVICE MANUAL.

This procedure should be followed: •

After major service or a rebuild.

•

Whenever the machine has been drained of hydraulic oil.

•

When any major component has been removed, repaired or replaced.

•

If the engine fuel supply has been disconnected or drained, refer to priming fuel system procedure in this section.

NOTE: Changing strainers, filters and replacing the hydraulic oil tends to aerate the oil. For maximum pump life, the machine should sit for 1 hour after servicing to allow entrained air to escape from the oil prior to applying working pressures to the pumps.

• Proceed to MACHINE START-UP procedure.

PRE-STARTUP AND FILLING 1. Check oil levels in the engine, the pump drive gearbox and the transmission.

2. Check coolant level in the radiator.

3. Do a final inspection of all fittings and clamps to make sure they are tight and will not leak.

4. Install the articulation lock bar and engage parking brake.

5. Do not start engine. Purge air from hydraulic system as follows: •

Ensure all filters are in place.

DRIVE PUMP

•

•

REMOVE PLUG

T726E-009

•

Remove the plug on the top case port of the drive pump. This port will assist in venting air as hydraulic oil is filling the system components. Reinstall the plug when hydraulic oil free of air begins to flow out the port.

•

Fill the hydraulic tank if it has been drained.

•

Fill all the pumps and motors with prefiltered hydraulic oil through the highest case drain ports and close the ports.

3.26

Tigercat T726E Trencher

Lubrication and Maintenance

MACHINE START-UP

NOTE: If charge pressure gauge does not indicate a rise in pressure, check for possible cause (air in system, leaks, loose hose fittings, pumps not turning, etc.). Repair problem.

Repeat step 5 until a rise in charge pressure is noticed.

Before beginning this procedure, perform the PRE START-UP AND FILLING steps.

1. Ensure the articulation lock bar is installed.

6. Reconnect engine wiring harness multi pin connector.

DISCONNECT THE MULTI-PIN CONNECTOR FROM THE ENGINE CPU

7. Start engine. If charge pressure does not rise within 20 to 30 seconds, TURN ENGINE OFF. If charge pressure is between 18-31 Bar (260-450 psi.), run engine at IDLE for 20 minutes. Check engine oil pressure in cab.

Do not operate any functions.

• T726E-020

2. Disconnect the engine wiring harness multi pin connector (prevents engine starting).

CAUTION Machine operator must ONLY take directions from the person doing the set-up.

8. With engine at IDLE, parking brake ON, hold foot brake down, bleed brakes in rear axle.

9. Set throttle to IDLE and run each BOOM function for 2 minutes at LOW pressure to purge air from circuit.

IMPORTANT Without an attachment, the tilt function can cause damage to the arms. Watch the two LINK ARMS very carefully, as they may drop down beside the boom arms and wedge, causing the crank arms to bend. When necessary, lower the boom DOWN, watching closely and tilt FORWARD, again watching the link arms closely.

INSTALL A 0 - 70 BAR (0-1000 PSI) GAUGE AT CHARGE PRESSURE TEST PORT.

•• DRIVE PUMP

•

CRANK ARM

LINK ARM

•

DRIVE PUMP CHARGE PRESSURE T726E-010 TEST PORT CONNECTION

••

3. Install a 0-70 Bar (0-1000 psi.) gauge on drive pump charge pressure at test port. Watch gauge closely.

4. Close cab doors, turn ignition key switch to the 'ON' psition and depress the pilot reset switch.

This will allow pilot oil to circulate and refill the pilot and case drain circuits during the following cranking procedure.

• BOOM ARM

•

5. Crank engine for 5 seconds, wait for 5 seconds. Check charge pressure gauge during cranking to observe for pressure reading. Repeat 5 times to pump oil into pumps and system components.

718E-028

3.27

CRANK, LINK AND BOOM ARMS

Tigercat T726E Trencher

Lubrication and Maintenance

NOTE: If the machine was on wheels, the steer and drive functions were not properly purged or flushed. Remove the articulation lock bar and at LOW IDLE, slowly operate the steer function right and left a few times. With the parking brake released and at LOW IDLE, slowly operate the drive function forward and reverse a few times.

10. Set throttle to FULL and run each function again for 2 minutes to flush circuit.

HAND FILL PUMP

11. Set throttle to idle and shut engine off.

•

T726E-011

HAND FILL PUMP

14. If required, top up the hydraulic oil reservoir with clean hydraulic oil using the hand fill pump.

15. Remove gauge from M3 test port on drive pump. Clean up any spilled oil.

195-17

CHECK ENGINE COOLANT LEVEL

12. Top up the radiator with clean coolant.

HYDRAULIC OIL RESERVOIR

NOTE: If possible, allow the machine to stand for 4 to 6 hours before setting any of the operating pressures. This will allow any air bubbles in the oil to escape and is a good time to check for leaks.

16. Recheck hydraulic oil level and top up if required.

17. Refer to appropriate section of the service manual to check and set operating pressures.

• SIGHT GAUGE HYD. OIL LEVEL

• SENDING UNIT LOW HYDRAULIC OIL

••

726E-012

HYDRAULIC OIL RESERVOIR

13. With cylinders fully retracted, check hydraulic oil level.

3.28

Tigercat T726E Trencher

Lubrication and Maintenance

REPLACING THE ENGINE SERPENTINE BELT 1. Park the machine on level ground. Parking brake ON, attachment resting on the ground and engine off. Turn battery disconnect switch OFF. SERPENTINE BELT

IDLER PULLEYS

••

ALTERNATOR

•• BELT TENSIONER

•• •

• ••

••

A/C COMPRESSOR

•• WATER PUMP

T726E-013

2. Install a Johnson bar with a 3/8" square drive in the square socket hole of the belt tensioner.

3. Loosen belt tensioner and remove the serpentine belt.

4. Replace the serpentine belt. Ensure that all of the ribs on the serpentine belt align with the grooves on the engine pulleys.

3.29

Tigercat T726E Trencher

Lubrication and Maintenance

MIDDLE AND REAR DRIVE SHAFT SPLINE LUBRICATION When operating in extremely wet or dusty conditions or when the regular service schedule has been neglected, insufficient lubrication to the spline area of the middle drive shaft will result in premature wear. In addition old grease often forms into a semi-solid, rubber-like plug preventing the purging of contaminants (water, dirt, sand, etc.) through the slip spline seal.

2

•• •

The most common cause of joint and slip spline failure is lack of proper lubrication. * USE LITHIUM BASED EP2 GREASE CONTAINING 5% MOLYBDENUM DISULFIDE.

726M-008

1

MIDDLE SLIP SPLINE

MIDDLE SLIP SPLINE LUBRICATION 1. Park machine on level ground and steer fully to the right (this reduces drive shaft total length). Lower attachment to the ground.

2. Set parking brake ON and stop the engine.

3. Apply grease to grease nipple (1) until new, clean grease exits from the relief fitting (2).

•• •

1

2

726M-011

Check to see if grease is exiting from the relief fitting (2). If grease does not exit from the relief fitting, remove the the relief fitting and reapply grease at the grease nipple. If grease flows out of relief fitting hole replace relief fitting.

If grease does not exit from the relief fitting hole, remove drive shaft and inspect for "hardened" grease build up, rust or other contaminants within the drive shaft. Repair or Replace drive shaft.

3.30

Tigercat T726E Trencher

Lubrication and Maintenance GREASE GUN

• •

1

•

726M-012

726M-009

REAR SLIP SPLINE

FRONT AND REAR SLIP SPLINE LUBRICATION

GREASE APPEARS AT RELIEF HOLE

4. Apply grease to grease nipple (1) until new, clean grease appears at the relief hole at yoke end of slip spline, FIG. 'C'.

720C-01

FIG. 'C' REAR DRIVE SHAFT YOKE END

5. Plug or cover relief hole and continue to apply pressure to grease nipple until new, clean grease appears at slip spline seal.

6. If grease does not appear at slip spline seal and continues to exit from the covered relief hole, remove the drive shaft and inspect for "hardened" grease build up, rust or other contaminants within the drive shaft. Repair or Replace drive shaft.

3.31

Tigercat T726E Trencher

Lubrication and Maintenance

TORQUE CHART LOCATION

THREAD DIAMETER

Cylinders Pin bolts Piston nut, steer cyl.

Piston nut, boom/tilt cyl.

Gland, steer cyl.

Keeper plate bolts

TORQUE (LUBRICATED) lbf-ft Nm

3/4" UNC 1 1/4" UNF 1 1/2" UNF 3/4" UNC

282-310 930 1640 450 282-310

393-420 1282 2260 620 389-420

1/2" UNC 3/4" UNC

80-88 282-310

109-119 393-420

Engine mounting Bolts, mount to chassis Bolts, brackets to engine Bolts, bracket to pump drive

7/8" UNC M12-1.75 (10.9) 5/8" UNC

364 75 159-175

500 100 216-237

Pump drive gearbox Drive plate to flywheel Bell housing to CUMMINS engine

M10 x 1.5 (10.9) M10 x 1.5 (10.9)

32 32

43 43

1 1/4" x 18 UNEF 3/4" UNC

475-525 357

644-711 484

1/2" UNF 1/2" UNF 3/8" UNF

120-132 120-132 37-49

163-179 163-179 50-66

Axle mounting bolts Front Rear

7/8" UNC 3/4" UNC

364 226

500 310

Wheel bolts

7/8" UNF

500-550

679-745

Transmission housing to frame

7/8" UNC

364

500

Center joint bearing Bearing retaining bolts Pin retaining bolts

Drive shafts Yoke retaining nut, front shaft Pillow block retaining bolts Universal joint bolts Rear & Mid. drive shaft Front drive shaft to Mid. drive shaft Front drive shaft to axle

Torque values pertaining to the engine and attachment are provided in the appropriate manuals.

724D-TORQUECHART.XLS

3.32

Tigercat T726E Trencher

Lubrication and Maintenance

GENERAL TORQUE SPECIFICATIONS The torque values listed below are for general use only.

DO NOT use these values if a different torque value or tightening procedure is shown for a specific application.

IMPERIAL GRADE 8 BOLTS

GRADE 5 BOLTS

IMPERIAL BOLT TORQUE SPECIFICATIONS GRADE 5 BOLTS GRADE 8 BOLTS COARSE THREAD 1/4" - 20 5/16" - 18 3/8" - 16 7/16" - 14 1/2" - 13 9/16" - 12 5/8" - 11 3/4" - 10 7/8" - 9 1" - 8 1 1/8" - 7 1 1/4" - 7 FINE THREAD 1/4" - 28 5/16" - 24 3/8" - 24 7/16" - 20 1/2" - 20 9/16" - 18 5/8" - 18 3/4" - 16 7/8" - 14 1" - 14 1 1/8" - 12 1 1/4" - 12

DRY LUBRICATED lbf-ft Nm lbf-ft Nm 11 - 12 15 - 16 8 - 10 11 - 13 20 - 28 27 - 38 26 - 30 35 - 40 44 -48 60 - 65 33 - 36 45 - 49 70 - 77 95 - 104 52 - 57 71 - 77 106 - 117 144 - 158 80 - 88 109 - 119 153 - 168 208 - 228 115 - 127 156 - 172 212 - 233 288 - 316 159 - 175 216 - 237 376 - 414 510 - 561 282 - 310 393 - 420 606 - 667 822 - 904 455 - 501 617 - 679 909 - 1000 1233 - 1355 682 - 750 925 - 1016 1288 - 1417 1746 - 1921 966 - 1062 1310 - 1441 1817 - 1999 2464 - 2710 1360 - 1496 1844 - 2027 DRY LUBRICATED lbf-ft Nm lbf-ft Nm 13 - 14 18 - 19 10 - 13 14 - 17 23 - 28 31 - 38 18 - 25 25 - 33 49 - 54 67 - 73 37 - 41 50 - 55 78 - 86 106 - 116 58 - 64 79 - 86 120 - 132 163 - 179 90 - 99 122 - 134 171 - 188 232 - 255 128 - 141 174 - 191 240 - 264 326 - 358 180 - 198 244 - 268 420 - 462 570 - 626 315 - 347 427 - 470 668 - 735 906 - 996 501 - 550 679 - 745 995 - 1096 1359 - 1486 746 - 821 1012 - 1113 1445 - 1590 1960 - 2155 1083 - 1191 1469 - 1613 2012 - 2213 2728 - 2997 1509 - 1660 2046 - 2250

DRY COARSE lbf-ft Nm THREAD 1/4" - 20 7- 8 10 - 11 5/16" - 18 14 - 18 19 - 24 3/8" - 16 31 - 34 42 - 46 7/16" - 14 49 - 54 66 - 73 1/2" - 13 75 - 83 102 - 112 9/16" - 12 109 - 120 148 - 162 5/8" - 11 150 - 165 204 - 223 3/4" - 10 266 - 293 360 - 397 7/8" - 9 394 - 433 535 - 586 1" - 8 591 - 649 802 - 879 1 1/8" - 7 794 - 873 1077 - 1183 1 1/4" - 7 1120 - 1232 1519 - 1670 FINE DRY lbf-ft Nm THREAD 1/4" - 28 9 - 10 12 - 13 5/16" - 24 17 - 22 23 - 29 3/8" - 24 35 - 39 48 - 53 7/16" - 20 55 - 61 75 - 83 1/2" - 20 85 - 94 116 - 127 9/16" - 18 121 - 133 164 - 180 5/8" - 18 170 - 187 231 - 253 3/4" - 16 297 - 327 403 - 443 7/8" - 14 434 - 477 589 - 646 1" - 14 646 - 711 876 - 965 1 1/8" - 12 891 - 980 1208 - 1328 1 1/4" - 12 1240 - 1364 1682 - 1849

LUBRICATED lbf-ft Nm 8 - 10 11 - 13 10 - 15 13 - 20 23 - 25 31 - 34 37 - 41 50 - 55 57 - 63 77 - 85 82 - 90 111 - 122 113 - 124 152 - 168 200 - 220 271 - 298 296 - 326 402 - 441 443 - 489 601 - 663 596 - 656 808 - 889 840 - 924 1139 - 1252 LUBRICATED lbf-ft Nm 9 - 10 12 - 13 16 - 20 21 - 27 26 - 29 35 - 39 41 - 45 56 - 61 64 - 70 87 - 95 91 - 100 124 - 135 128 - 141 174 - 191 223 - 245 303 - 332 326 - 359 442 - 486 484 - 534 657 - 724 668 - 735 906 - 996 931 - 1024 1262 - 1387

METRIC

METRIC BOLT TORQUE SPECIFICATIONS SIZE

CLASS 4.8 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

CLASS 8.8 OR 9.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

CLASS 10.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

CLASS 12.9 LUBRICATED DRY Nm lbf-ft Nm lbf-ft

M6 M8 M10

4.8 12.0 23.0

3.5 8.5 17.0

6.0 15.0 29.0

4.5 11.0 21.0

9.0 22.0 43.0

6.5 16.0 32.0

11.0 28.0 55.0

8.5 20.0 40.0

13.0 32.0 63.0

9.5 24.0 47.0

17.0 40.0 80.0

12.0 30.0 60.0

15.0 37.0 75.0

11.5 28.0 55.0

19.0 47.0 95.0

14.5 35.0 70.0

M12 M14 M16

40.0 63.0 100.0

29.0 47.0 73.0

50.0 80.0 125.0

37.0 60.0 92.0

75.0 120.0 190.0

55.0 88.0 140.0

95.0 150.0 240.0

70.0 110.0 175.0

110.0 175.0 275.0

80.0 130.0 200.0

140.0 225.0 350.0

105.0 165.0 225.0

130.0 205.0 320.0

95.0 150.0 240.0

165.0 260.0 400.0

120.0 190.0 300.0

M18 M20 M22

135.0 190.0 260.0

100.0 140.0 190.0

175.0 240.0 330.0

125.0 180.0 250.0

260.0 375.0 510.0

195.0 275.0 375.0

330.0 475.0 650.0

250.0 350.0 475.0

375.0 530.0 725.0

275.0 400.0 540.0

475.0 675.0 925.0

350.0 500.0 675.0

440.0 625.0 850.0

325.0 560.0 460.0 800.0 625.0 1,075.0

410.0 580.0 800.0

M24 M27 M30

330.0 490.0 675.0

250.0 360.0 490.0

425.0 625.0 850.0

310.0 650.0 450.0 950.0 625.0 1,300.0

M33 900.0 M36 1,150.0

475.0 825.0 600.0 925.0 675.0 1,150.0 850.0 1,075.0 800.0 1,350.0 1,000.0 700.0 1,200.0 875.0 1,350.0 1,000.0 1,700.0 1,250.0 1,600.0 1,150.0 2,000.0 1,500.0 950.0 1,650.0 1,200.0 1,850.0 1,350.0 2,300.0 1,700.0 2,150.0 1,600.0 2,700.0 2,000.0

675.0 1,150.0 850.0 1,750.0 1,300.0 2,200.0 1,650.0 2,500.0 1,850.0 3,150.0 2,350.0 2,900.0 2,150.0 3,700.0 2,750.0 850.0 1,450.0 1,075.0 2,250.0 1,650.0 2,850.0 2,100.0 3,200.0 2,350.0 4,050.0 3,000.0 3,750.0 2,750.0 4,750.0 3,500.0

TORQUECHARTGENERAL.XLS

3.33

Tigercat T726E Trencher

Lubrication and Maintenance

Par ker ark

Assemb que Assemblly Tor orque The four-bolt port is simply a circular opening (flow passage) surrounded by four tapped holes in a certain pattern for acceptance of the flange clamping bolts.

The flat surface of the port compresses the O-ring contained in the groove in the flange head when the clamp bolts are torqued. In some instances, the groove is in the port and not in the flange head. The bolts, through the clamp halves, clamp down the flange head on to the flat surface of the port compressing and trapping the O-ring in the groove and leaving no gap for it to extrude under pressure. The hydraulic pressure is thus sealed by the compressed O-ring as long as the bolts are tightened enough to maintain solid metal to metal contact between the flange head at the outside diameter of the O-ring and the top of the port.

The 4-Bolt Split Flange consists of four main components: • A body (flange head) • An O-ring • One “captive” or two “split” flange clamps

• Four bolts and washer

WASHERS

•• •• •

BOLTS FLANGE CLAMP

Flange Port Assembly

FLANGE HEAD

•• •

The steps to properly assemble the flange port clamping bolts are: 1. Make sure sealing surfaces are free of burrs, nicks, scratches or any foreign particles.

2. Lubricate the O-ring.

3. Position flange and clamp halves.

4. Place lock washers on bolts and insert through clamp halves.

5. Hand tighten bolts.

6. Torque bolts in diagonal sequence (see Fig. T9) in small increments to the appropriate torque level listed in Table T6 or Table T7 on this page.

O-RING TAPPED HOLES

••

FLANGE.TIFF

Fig. T8 - 4 Bolt Split Flange Components

FLANGE2.TIFF

Fig. T9 - Flange Bolt Tightening Sequence

Dash Size

Flange Size

Inch Bolt (J518)

Torque ft. lbs.

Metric Bolt (ISO 6162)

Torque N-m

8 12 16 20 24 32 40 48 56 64 80

1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5

5/16-18 3/8-16 3/8-16 7/16-14 1/2-13 1/2-13 1/2-13 5/8-11 5/8-11 5/8-11 5/8-11

17 +/- 2 25 +/- 3.5 31 +/- 4.5 41 +/- 5 52 +/- 6 60 +/- 6 85 +/- 9 144 +/- 15 125 +/- 8 125 +/- 8 125 +/- 8

M8 M10 M10 M12* M12 M12* M12 M16 M16 M16 M16

25 49 49 85 85 135 95 220 220 220 220

DASH SIZE 8 12 16 20 24 32 *

FLANGE SIZE 1/2 3/4 1 1 1/4 1 1/2 2 SO

INCH BOLT (J518) 5/16-18 3/8-16 7/16-14 1/2-13 5/8-11 3/4-10 f

TORQUE METRIC BOLT TORQUE FT LBS (ISO 6162) N-M 17 +/- 2 M8 25 30 +/- 4.5 M10 49 46 +/- 4.5 M12 85 69 +/- 6 M14* 135 125 +/- 8 M16 210 208 +/- 20 M20 425

* Does not meet ISO 6162 specification.

Table T7 - Code 62 Flange Recommended Bolt Torque

* Does not meet ISO 6162 specification.

Table T6 - Code 61 Flange Recommended Bolt Torque

3.34

Tigercat T726E Trencher

Lubrication and Maintenance

Par ker ark

Assemb que Assemblly Tor orque

JIC 37 Degree Flare SAE Dash Size

Tube Connection Swivel or Hose Connection FFWR FFWR

Thread Size

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

NPTF

5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12 3-12

NA NA 2 2 1 1/2 1 1/2 1 1/2 1 1/4 1 1 1 1 1 1

SAE Dash Size

NA NA 2 2 1 1/4 1 1 1 1 1 1 1 1 1

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

1/8-27 NA 1/4-18 NA 3/8-18 1/2-14 7/8-14 3/4-14 NA 1-11 1/2 1 1/4-11 1/2 1 1/2-11 1/2 2-11 1/2 NA

O'ring Face Seal / Seal-Lok

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

NA NA 9/16-18 NA 11/16-16 13/16-16 1-14 1 3/16-12 NA 1 7/16-12 1 11/16-12 2-12 NA NA

NA NA 1/4 TO 1/2 NA 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 NA 1/4 TO 1/2 1/4 TO 1/2 1/4 TO 1/2 NA NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

BSPT

Tube Connection Swivel or Hose Connection FFWR FFWR

Thread Size

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass

F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass

SAE Dash Size

Tube Connection Swivel or Hose Connection TFFT TFFT

Thread Size

SAE Dash Size

NA NA 1/2 TO 3/4 NA 1/2 TO 3/4 1/2 TO 3/4 1/2 TO 3/4 1/3 TO 1/2 NA 1/3 TO 1/2 1/3 TO 1/2 1/3 TO 1/2 NA NA

-2 -3 -4 -5 -6 -8 -10 -12 -14 -16 -20 -24 -32 -40

F.F.W.R : Flats From Wrench Resistance All values are for Steel, Stainless Steel and Brass

Thread Size

Tube Connection Swivel or Hose Connection TFFT TFFT

1/8-28 NA 1/4-19 NA 3/8-19 1/2-14 NA 3/4-14 NA 1-11 1 1/4-11 1 1/2-11 2-11 NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

2-3 NA 2-3 NA 2-3 2-3 NA 2-3 NA 1.5-2.5 1.5-2.5 1.5-2.5 1.5-2.5 NA

T.F.F.T. : Turns from finger tight All pipe values are for Steel, Stainless Steel and Brass

SAE J1926 Straight Thread Port Assembly Torques ASSEMBLY TORQUE (+10 % - 0) SAE Dash Size

2 3 4 5 6 8 10 12 14 16 20 24 32

Non-Adjustable Thread Size

Seal-Lok

ft. lbs (in. lbs) 5/16-24 (310) 3/8-24 (310) 7/16-20 (310) 1/2-20 (360) 9/16-18 (420) 3/4-16 60 7/8-14 100 1 1/16-12 135 1 3/16-12 175 1 5/16-12 200 1 5/8-12 250 1 7/8-12 305 2 1/2-12 375

N-m 20 20 20 40 46 80 135 185 235 270 340 415 510

Adjustable

Triple-Lok Ferulok Pipe Fittings ft. lbs (in. lbs) (85) (155) (260) (280) (350) (620) 85 135 175 200 250 305 375

N-m 10 18 29 32 40 70 115 183 237 271 339 414 509

Seal-Lok ft. lbs (in. lbs) (310) (310) (310) (360) (420) 60 100 135 175 200 250 305 375

N-m

3.35

20 20 20 40 46 80 135 185 235 270 340 415 510

Plugs

Triple-Lok Ferulok ft. lbs (in. lbs) (60) (100) (180) (250) (350) (620) 85 135 175 200 250 305 375

N-m 7 11 20 28 40 70 115 183 237 271 339 414 509

Hollow Hex HP5ON-S ft. lbs (in. lbs) (30) (55) (120) (170) (410) 60 100 135 175 200 250 305 375

N-m 3.5 6 13.5 19 46 80 135 185 235 270 340 415 510

Hex Head P5ON-S ft. lbs (in. lbs) (85) (155) (260) (280) (350) (620) 85 135 175 200 250 305 375

N-m 10 18 29 32 40 70 115 183 237 271 339 414 509

Tigercat T726E Trencher

Lubrication and Maintenance

EATON Aeroquip

Assemb que Assemblly Tor orque

Recommended Parallel Connection Assembly torque

Eaton recommends that a

The values listed are for

Torque wrench be used to

steel connections. Contact

assure proper fitting

Eaton Aeroquip for torques values for

assembly of these

other materials

connections.

Straight Thread O-Ring Boss Low Pressure with 37º (SAEJ514) Thread Size (inches) 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12

Dash Size -03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24 -32

Straight Thread O-Ring Boss High Pressure with ORS (J1453)

Jam Nut or Jam Nut or Straight Straight Fitting Torque Fitting Torque lb.-ft.

Newton Meters 8-9 12-13 13-15 18-20 14-15 19-21 23-24 32-33 40-43 55-57 43-48 59-64 68-75 93-101 83-90 113-122 112-123 152-166 146-161 198-218 154-170 209-230 218-240 296-325

Dash Size -03 -04 -05 -06 -08 -10 -12 -14 -16 -20 -24

ORS

Dash Size -04 -06 -08 -10 -12 -16 -20 -24

Thread Size (inches) 3/8-24 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 3/16-12 1 5/16-12 1 5/8-12 1 7/8-12

Jam Nut or Jam Nut or Straight Straight Fitting Torque Fitting Torque lb.-ft.

Newton Meters 8-10 11-16 14-16 20-22 18-20 24-27 24-26 33-35 50-60 68-78 72-80 98-110 125-135 170-183 160-180 215-245 200-220 270-300 210-280 285-380 270-360 370-490

SAE 37º (JIC)

Thread Size (inches) 9/16-18 11/16-20 13/16-16 1-14 1 3/16-12 1 7/16-12 1 11/16-12 2-12

Swivel Nut Torque lb.-ft.

10-12 18-20 32-35 46-50 65-70 92-100 125-140 150-165

Swivel Nut Torque Newton Meters 14-16 24-27 43-47 62-68 88-95 125-136 170-190 204-224

Dash Size -04 -05 -06 -08 -10 -12 -16 -20 -24 -32

Metric Thread Size mm M10x1 M12x1.5 M14x1.5 M16x1.5 M18x1.5 M20x1.5 M22x1.5 M26x1.5 M27x2 M33x2 M42x2 M48x2

Thread Size (inches) 7/16-20 1/2-20 9/16-18 3/4-16 7/8-14 1 1/16-12 1 5/16-12 1 5/8-12 1 7/8-12 2 1/2-12

Swivel Nut Torque lb.-ft.

11-12 15-16 18-20 38-42 57-62 79-87 108-113 127-133 158-167 245-258

Swivel Nut Torque Newton Meters 15-16 20-22 24-28 52-58 77-85 108-119 148-154 173-182 216-227 334-352

BSPP Straight Adapter or Locknut Torque lb.-ft.

Newton Meters 13-15 18-20 15-19 20-25 19-23 25-30 33-40 45-55 37-44 50-60 52-66 70-90 55-70 75-95 81-96 110-130 96-111 130-150 162-184 220-250 170-192 230-260 258-347 350-470

Nominal Thread Size Straight Adapter or Locknut Torque inches** lb.-ft.

Newton Meters G1/8-28 13-15 18-20 G1/4-19 19-23 25-30 G3/8-19 33-40 45-55 G1/2-14 55-70 75-95 G3/4-14 103-118 140-160 G1-11 162-184 220-250 G1 1/4-11 170-192 230-260 G1 1/2-11 258-347 350-470 ** "G" denotes parallel threads, other than ISO 6149 (Port connection only)

Eaton Aeroquip Fluid Conveyance Products A-HOOV-MC001-E January 2005

3.36

Tigercat T726E Trencher

Lubrication and Maintenance

PRESSURE / SPEED SETTINGS With hydraulic oil temperature at 49°C - 60°C (120°F - 140°F) Location

Pressure (bar)

Pressure (PSI)

Engine RPM

Engine RPM 1920 +/- 25 High Idle 850 +/- 25 Low Idle

Pilot Manifold Pressure Relief Valve Pressure Reducing Valve

46.5 38

675 550

1000 1000

Drive Pump Charge Pressure Relief Valve · P.O.R. Forward/Reverse · High Pressure Relief Forward · High Pressure Relief Reverse

24.1 310.3 344.7 344.7

350 4500 5000 5000

1000 1800 1800 1800

Drive Motor Drive Motor P.O.R.

241.3

3500

1800

Steer Circuit Steer Valve Main Relief Steer Right Port Relief Steer Left Port Relief

172.4 229.3 229.3

2500 3325 non-adjustable 3325 non-adjustable

1800 1000 1000

Cutter Pump Charge Pressure Relief Valve · P.O.R. Forward/Reverse · High Pressure Relief Reverse · High Pressure Relief Forward

24.1 344.7 137.9 379.2

350 5000 2000 5500

1000 1000 1000 1000

Boom Valve Main Relief Tilt In Port Relief Tilt Out Port Relief Left Side Plate Traverse Left Port Relief Left Side Plate Traverse Right Port Relief Right Side Plate Traverse Left Port Relief Right Side Plate Traverse Right Port Relief Boom Up Port Relief Boom Down Port Relief

179.3 200 200 137.9 137.9 137.9 137.9 200 152

2600 2900 2900 600 600 600 600 2900 2200

1800 1000 1000 1000 1000 1000 1000 1000 1000

Important Notes: 1) All adjustments to be made with hydraulic oil temperature at 49°C - 60°C (120°F - 140°F) 2) Use Boom Lift Lock Support 4128A when working under boom 3) Use Steering Articulation Lock Bar when working on steering

PRESSURE SETTINGS.R1.XL 11/09/07

3.37

Tigercat T726E Trencher FAN CONTROL ELECTRONIC CONTROLLER

••

Lubrication and Maintenance The temperature sensor in the hydraulic tank operates in a similar manner to the engine coolant temperature sensor but independently and with a different temperature range of (See COOLING SET POINTS).

This sensor will signal the electronic control module to turn the fan ON at (See COOLING SET POINTS). As the temperature of the hydraulic oil increases, the speed of the fan will also increase to a maximum 2200 rpm fan speed @1800 rpm engine speed, at this point the temperature of the hydraulic oil will be (See COOLING SET POINTS), of higher.

724E-025

FAN ELECTRONIC CONTROL MODULE WIRING

720D-052

FAN ELECTRONIC CONTROL MODULE

This control consists of an electronic processing module, a three position FAN switch in the operator's cab with CLEAN/AUTO/FULL ON* positions for fan control.

COOLING SET POINTS CONTROLLER PLUS ONE Charge Air Min Charge Air Max Engine Coolant Min Engine Coolant Max Hydraulic Oil Temp Min Hydraulic Oil Temp Max

50°C 84°C 85°C 96°C 49°C 71°C

(122°F) (183°F) (185°F) (205°F) (120°F) (160°F)

When the switch is in the AUTO position and the fan is stopped due to low engine coolant, air intake or hydraulic oil temperatures, turning ON the A/C will immediately turn the cooling fan to run at 1200 rpm fan speed @1800 rpm engine speed. This is to ensure that sufficient air flow is available for the cab A/C even while the machine is still warming up.

CAUTION Before placing the fan switch in the CLEAN (PURGE) position make sure that there are no personnel on the left side of the machine in the area where the fan will expel debris

724E-004

FAN SWITCH

When the engine coolant temperature reaches 85°C (185°F) the sensor on the engine in conjunction with the electronic control module will send a signal to the control valve to start to turn the fan slowly. The fan speed is variable from zero up to a maximum of 2200 rpm fan speed @1800 rpm engine speed. As the temperature of the coolant increases so does the speed of the fan up to the maximum 2200 rpm fan speed @1800 rpm engine speed. At this point the engine coolant temperature will be 96°C (205°F), or higher.

When the switch is in the FULL ON (OVERRIDE) position, the fan will run at FULL speed for cooling regardless of coolant, air intake or oil temperatures. The AUTO CLEAN/REVERSE feature will not function in the FULL ON position.

When the switch is pressed momentarily to the CLEAN (PURGE) position, the control module will signal the control valve to reverse the flow of oil to the motor and turn the fan in reverse. The control module will also turn the air conditioning system OFF for as long as the fan switch is in the CLEAN (PURGE) position.

3.38

Tigercat T726E Trencher

Lubrication and Maintenance

ELECTRONIC CONTROL MODULE BLINK CODES

••••

The electronic control module has two LED lights on the front top left side of the controller. A GREEN LED is used to indicate that power is ON and the controller is activated. The RED LED is used to provide a visual warning in the form of BLINK CODES whenever the controller senses a fault in the system.

The charts on the following 2 pages can be used for BLINK CODE TRANSLATION AND DIAGNOSTICS.

M726E-010

3.39

GREEN LED RED LED

ELECTRONIC CONTROL MODULE

••

••

••

••

••

•••

•••

•••

•••

22

23

24

25

26

31

32

33

34

•

17

••

•

16

21

•

15

•

•

14

19

•

13

•

•

12

3.40

1 sec.

1 sec

1 sec

1 sec

1 sec.

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

••••

•••

••

•

••••••

•••••

••••

•••

••

•

Attachment pump will turn off and will not turn on.

Attachment pump will turn off and will not turn on.

Attachment pump will not turn on.

Intermittent Saw Blade Extend Valve Coil

Cutter Control Valve Pilot Solenoid Fault

Saw Pressure Sensor Fault

Intermittent Saw Blade Proximity Sensor Fault

Drive Motor Speed Sensor Fault

Drive Motor Coil Fault

Drive Reverse Coil Fault

Drive Forward Coil Fault

Joystick inactive fault

Top Saw Coil Fault

Saw Cut Control Coil Fault

Parameter Fault

Pilot Pressure Sender Fault

Main Pump Horsepower Control Coil Fault

Attachment pump will turn off and will not turn on.

x

Machine will not drive reverse.

Machine drive speed may not be consistent at extremely low speeds.

Machine will only drive slow.

Failed sensor, sensor out of adjustment or disconnected.

Current is out of operating range. Check connections between drive pump forward coil and controller.

Check coil ground connections.

Current is out of operating range. Check connections between drive pump reverse coil and controller.

Check coil ground connections.

Current is out of operating range. Check connections between drive motor coil and controller. Check coil ground connections.

x

x

x

x

x

Machine will not drive forward.

Loss of communication between joystick and IQAN controller. Check connections between joystick and IQAN controller

Electronic Joysticks are not functioning (machine equipped with IQAN controls)

x

x

x

x

x

x

Current is out of operating range. Check connections between top saw cut valve section coil and controll.

Check coil ground connections.

Current is out of operating range. Check connections between attachment pump coil and controller. Check coil ground connections.

Voltage is out of operating range. Check connections between sensor and controller. Verify that sensor has been calibrated using the service tool. Replace pressure sensor if necessary.

Parameter set points are out of operating range. Check settings with service tool.

Current is out of operating range. Check connections between saw cut valve section coil and controll. Check coil ground connections.

x

x

x

x

x

CS234

Top Saw Cut function may not work correctly.

Saw cut function may not work correctly.

Engine will not automoatically idle down during times of inactivity Anti-stall and auto-idle may not function correctly

Engine anti-stall may not function correctly.

Intermittent saw blade may not retract. Controller will continue to send current to retract valve coil.

Intermittent saw blade may not extend. Controller will continue to send current to extend valve coil.

Current is out of operating range. Check connections between cutter control pilot solenoid and controller.

Check cutter control solenoid ground connections.

Current is out of operating range. Check connections between intermittent saw blade extend valve coil (locted in intermittent saw head) and controller. Check solenoid ground connections.

Current is out of operating range. Check connections between intermittent saw blade retract valve coil (locted in intermittent saw head) and controller. Check solenoid ground connections.

x

Electronic Saw gauge in cab will not operate correctly.

Pressure transducer has malfunctioned or has become disonnected and no signal is present. Check the signal wire from the transducer. When the transducer is given 5V sensory power, 0.5 V should be present at the signal wire at 0 psi.

x

x

x

x

x

Speed sensor has malfunctioned or blade has not turned for an extended period of time with the cutter on.

Check that saw blade turns when cutter is on. Check connection between speed sensor and controller.

Check speed sensor ground. Check speed sensor for proper installation and operation.

Current is out of operating range. Check connections between attachment pump reverse coil and controller.

Check reverse coil ground connections.

x

Saw blade speed has exceeded the saw max speed set point. Check saw speed and adjust BODC screw on saw motor if necessary. Check flow to saw motor in saw mode.

x

x

M726D M726E T726E

x

726D

x

720D/ 724D

Mode selector switch is in the incorrect position or the electrical boom connector is not connected. Place mode selector switch in the correct mode or connect boom eletrical connector and turn cutter on. Check connections between attachment and controller. Check resistance of attachment ID connector inside attachement.

x

718E

MACHINE APPLICABLE FAULT CODES 720E/ 724E/ 726E

Current is out of operating range. Check connections between attachment pump coil and controller. Check coil ground connections.

(To diagnose fault)

POSSIBLE CAUSE / SOLUTION

Saw blade will retract for a specified length of time and will Intermittent saw blade proximity sensor has failed, come out of adjustment or become disconnected. Check not stop when it passes the blade proximity sensor or blade will not fully retract automatically. Manual retract button may sensor and sensor position, remove debris, check sensor connections. be used to fully retract saw blade.

M726D closed loop attachment circuit - If running in reverse Attachment Pump Reverse Displacement attachment pump will turn off and will not run reverse, no Control Coil affect on forward operation.

Saw Blade Speed Sensor Fault

Saw Blade Overspeed

Incorrect Cutter Mode Selected

• • • • • • • • • Intermittent Saw Blade Retract Valve Coil

••••••••

•••••••

••••••

•••••

••••

•••

••

(Only when fault code is active)

EFFECT

Attachment Pump Displacement Control Attachment pump will turn off and will not turn on.

Coil

(Fault Location)

•

(Flash Bit Sequence)

1 sec

DESCRIPTION

"RED LED"

18

•

11

FAULT CODE

PLUS1 CONTROLLER FAULT CODE INFORMATION

BLINK CODE TRANSLATION / DIAGNOSTICS

x

x

x

x

x

234/ 250B/ T250B

Tigercat T726E Trencher Lubrication and Maintenance

••••

••••

••••

••••

•••••

•••••

•••••

•••••

45

46

47

48

51

52

53

54

••••

43

••••

••••

42

44

••••

3.41

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

1 sec

••••

•••

••

•

••••••••

•••••••

••••••

•••••

••••

•••

••

•

(Fault Location)

(Flash Bit Sequence) (Only when fault code is active)

EFFECT

Fan will continue in increase pitch until is running at full pitch, will not decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Pitch Reverse Coil is out of operating range

Attachment pump will default to max pressure setting.

Boom Float may not turn on or will function eratically.

Boom Float may not function correctly, boom will not float up with a rise in terrain.

Boom Float may default to max down pressure.

Boom Float Manifold Float Enable Blocking Valve Coil Fault

Boom Float Lift Pressure Reducing/Relieving Valve Coil Fault

Boom Float Down Pressure Control Coil Fault

Fan runs at full speed forward. No effect on automatic reverse. Engine diagnostic display reads fault code SPN 1638 FMI 0

Attachment Pump POR Control Coil

Hydraulic Overheat Condition

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

M726D M726E T726E

Current is out of operating range at the boom float manifold down pressure control valve coil. Check connections between the coil and the controller. Check coil ground connections.

x

x

x

x

x

x

x

x

726D

x

x

x

x

x

x

x

x

x

720E/ 724E/ 726E

MACHINE APPLICABLE FAULT CODES

Current is out of operating range at the boom lift pilot pressure reducing/relieving valve coil. Check connections between the coil and the controller. Check coil ground connections.

Boom float blocking valve is faulty or has become disconnected. Check connections between the coil and the controller. Check coil ground connections.

Current is out of operating range. Check connections between attachment pump coil and controller. Check coil ground connections.

Hydraulic Oil has reached/exceeded Overheat Set Point. Decrease hydraulic oil temp to below overheat set point.

Coolant has reached/exceeded Overheat Set Point. Decrease coolant temp to below overheat set point.

Fan runs at full speed forward. Fan will not automatically reverse.

Engine Coolant Overheat Condition Fan runs at full speed forward. No effect on automatic reverse. Engine diagnostic display reads fault code SPN 441 FMI 0

Engine J1939 not present or Faulted. Check that J1939 backbone is in good condition, all resistors and connectors are properly connected.

Fan runs at full speed forward controller and will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display. Fan will not automatically reverse.

J1939 CAN BUS Fault

Fan Reverse Frequency Potentiometer

Voltage is out of operating range at the reverse frequency potentiometer or it is uncalbirated. To calibrate pot- Turn potentiometer fully out (+), wait 5 secs, then turn potentiometer fully in (-), wait 5 sec. Turn out (+) 1/4 turn to reset automatic reverse frequency.

Resistance is out of operating range at hydraulic oil temprature sender. Check connection between the hydraulic temperature sender and controller and replace hydraulic oil temperature sender if necessary.

x

Engine will not automatically idle down

Fan runs at full speed forward and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display. Fan will not automatically reverse.

x

x

720D/ 724D

x

x

x

x

x

718E

Fan will try to continue to perform as normal. If the fault is detected more Current is out of operating range at the fan reverse coil. Check wire connections between the reverse coil of fan than 3 times in 10 minutes; fan will run at full speed forward, not pump and the controller (720/724D). Check connections at reverse coil of fan valve and the controller automatically reverse and controller will send SPN 977 FMI 11 Fan (724E/726D/M726D). Check ground connect Controller Fault to the Engine diagnostic display.

Fan performs normal operation but will be default to automatically reverse every 20 minutes.

Hydraulic Oil Temperature Sender out of range

Fan Reverse Coil is out of operating range

Fan will try to continue to perform as normal. If the fault is detected more Current is out of operating range at fan valve proportional coil. Check connections between proportional coil of fan than 5 times in 10 minutes; fan will run at full speed forward, not valve and controller. Check ground connections. automatically reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Fan Proportional Coil is out of operating range.

Current is out of operating range at the fan pitch reverse coil. Check connections between the coil and the controller. Check coil ground connections.

Fan will try to continue to perform as normal. If the fault is detected more than 5 times in 10 minutes; fan will attempt to run at full speed forward, Current is out of operating range at the fan forward coil. Check connections between the forward coil of fan pump not automatically reverse and controller will send SPN 977 FMI 11 Fan and the controller. Check coil ground connections.

Controller Fault to the Engine diagnostic display.

Fan Forward Coil is out of operating range

Current is out of operating range at the fan pitch forward coil. Check connections between the coil and the controller. Check coil ground connections.

Fan will continue in increase pitch until is running at full pitch, will not decrease pitch or reverse and controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine diagnostic display.

Current is out of operating range. Check connections between relay and controller. Check relay ground connections. Check relay.

(To diagnose fault)

POSSIBLE CAUSE / SOLUTION

Fan Pitch Forward Coil is out of operating range

Fan runs at full speed forward. Fan will not automatically reverse and A/C OFF Output Relay is out of controller will send SPN 977 FMI 11 Fan Controller Fault to the Engine operating Range diagnostic display.

DESCRIPTION

"RED LED"

41

FAULT CODE

PLUS1 CONTROLLER FAULT CODE INFORMATION

BLINK CODE TRANSLATION / DIAGNOSTICS

x

x

CS234

x

x

234/ 250B/ T250B

Tigercat T726E Trencher Lubrication and Maintenance

Tigercat T726E Trencher

Lubrication and Maintenance

Tigercat wire colour code chart applicable to all products manufactured by Tigercat Industries Inc. COLOUR Red Black White Blue Purple Tan Yellow Grey Brown Green Orange

FUNCTION EXAMPLE Power ........................................ (fused and unfused) Ground Engine control ........................... (fuel shut-off, start aid) Propulsion Control .................... (transmission/reverser solenoids) Monitor, electrical and mechanical systems.................. (air cleaner, alternator, wheel speed, engine speed) Electrical and electromechanical control ......... (park brake, alternator excitation) (power door motor, backup alarm) Monitors .................................... (flow, pressure, temperature, level) Standard monitor system .......... (logic module to monitor) Lights Electro-hydraulic control ........... (pilot solenoids) Accessories .............................. (horn, A/C, heater)

3.42

Tigercat T726E Trencher

Lubrication and Maintenance

Weights of Commercial Wood

Species

kg/m3

lb/ft3

Species

kg/m3

lb/ft3

Alder, Red Ash, White Aspen, Quaking Bald Cypress Basswood, American Beech, American Birch, Paper Birch, Yellow Cedar, Alaska Cedar, Incense Cedar, Northern White Cedar, Port-Orford Cedar, Western Red Cherry, Black Cottonwood, Eastern Douglas Fir, Coast Douglas Fir, Inland North Elm, American Fir, Alpine Fir, Balsam Fir, Nobel Fir, Red Fir, Silver Fir, White Gum, Black Gum, Blue Gum, Red Gum, Tupelo Hemlock, Eastern Hemlock, Western Hickory, Pecan Hickory, True Larch, Western Locust, Black Magnolia, Cucumber

737 769 689 817 673 865 801 929 577 721 449 897 433 721 785 881 577 865 449 721 481 769 577 753 721 1121 801 897 801 657 993 1009 769 929 785

46 48 43 51 42 54 50 58 36 45 28 56 27 45 49 55 36 54 28 45 30 48 36 47 45 70 50 56 50 41 62 63 48 58 49

Maple, Big Leaf Maple, Black Maple, Red Maple, Silver Maple, Sugar Oak, Black Oak, Chestnut Oak, Red Oak, Red, Swamp Oak, Swamp Chestnut Oak, White Oak, White, Swamp Pine, Jack Pine, Loblolly Pine, Lodgepole Pine, Long Leaf Pine, Norway, Red Pine, Short Leaf Pine, Slash Pine, Sugar Pine, Western Yellow Pine, White-Western Pine, White-Eastern Poplar, Yellow Redwood Spruce, Black Spruce, Engleman Spruce, Red Spruce, Sitka Spruce, White Sweetgum Sycamore, American Tamarack Walnut, Black Willow, Black

753 865 801 721 897 1009 977 1009 1073 1041 993 1105 801 993 625 993 673 993 993 817 721 561 577 609 801 513 625 545 529 545 801 833 753 929 801

47 54 50 45 56 63 61 63 67 65 62 69 50 62 39 62 42 62 62 51 45 35 36 38 50 32 39 34 33 34 50 52 47 58 50

Note: The values shown here are green weights.

3.43

Tigercat T726E Trencher

Lubrication and Maintenance

3.44