Terex TL120 Operating Instructions Manual
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Terex TL120 Operating Instructions Manual

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Operating Instructions
Wheel Loader
TL120
Keep in a safe place for later use!
Place of safe keeping: Behind the driver's seat.
Ausgabe • Edition
2006-10
GÜLTIG AB FZ-ID.NR. • VALID FROM SERIAL NO. • A PARTIR DU NO. DE SERIE
TL01200101 > TL01200279
TEREX GMBH • D-74595 LANGENBURG

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Summary of Contents for Terex TL120

  • Page 1 Keep in a safe place for later use! Place of safe keeping: Behind the driver's seat. Ausgabe • Edition 2006-10 GÜLTIG AB FZ-ID.NR. • VALID FROM SERIAL NO. • A PARTIR DU NO. DE SERIE TL01200101 > TL01200279 TEREX GMBH • D-74595 LANGENBURG...
  • Page 2 Headquarters/Sales Customer Service Spare Parts TEREX GmbH TEREX GmbH Terex Ersatzteile GmbH Postfach 61 • D-74595 Langenburg Postfach 12 64 • D-91534 Rothenburg Postfach 12 64 • D-91534 Rothenburg Schaeffstr. 8 • D-74595 Langenburg Erlbacher Str. 115 • D-91541 Rothenburg Erlbacher Str.
  • Page 3 3.13 Optional accessories ......... 33 Operating Instructions Wheel Loader TL120...
  • Page 4 Checking the valve lash........84 Operating Instructions Wheel Loader TL120...
  • Page 5 Keyword index ........107 Operating Instructions Wheel Loader TL120...
  • Page 6 Index Operating Instructions Wheel Loader TL120...
  • Page 7 Introduction Introduction You decided to buy a TEREX TL120 Wheel Loader. The confidence you have placed in this model will be rewarded by efficient and economical performance of the machine. These Operating Instructions contain all information necessary for the correct use of the machine.

  • Page 8: Warranty And Maintenance

    Pictogram "Danger of injury/machine damage" Insist that only original TEREX spare parts are used Danger of injury/machine damage for all repair work which may arise. In this way, you...
  • Page 9 If necessary, the soil involved must be removed. Absorbent materials and removed soil must be disposed of properly. Applicable environmental requirements must be observed. Operating Instructions Wheel Loader TL120...
  • Page 10 Unlocked Coolant level Locked Air filter Float position Fuel, fuel level On machine: Safe distance Hydraulic oil Danger of injury Hydraulic oil level Hydraulic oil temperature Danger of crushing Table 1 Pictograms on the machine Operating Instructions Wheel Loader TL120...
  • Page 11 Windshield washer and wiper system Operating mode indicator Operating hours Parking brake Lashing points Travel direction Suspension points for loading by crane FWD/REV Travel speed, FAST First-aid kit Travel speed, SLOW Fire extinguisher Table 1 Pictograms on the machine Operating Instructions Wheel Loader TL120...
  • Page 12 Introduction Operating Instructions Wheel Loader TL120...

  • Page 13: Safety And Accident Prevention

    Furthermore, safety laws governing work in particular locations (tunnels, adits, quarries, pontoons, contaminated areas, etc.) must likewise be observed. Operating Instructions Wheel Loader TL120...

  • Page 14: General Safety Instructions

    • Loose parts such as tools or other accessories must be secured to the earth-moving machine. • Doors, windows, covers, flaps etc. must be closed or secured against slamming shut if in an open condition. Operating Instructions Wheel Loader TL120...

  • Page 15: Danger Zone

    Transport of persons The transport of persons on the machine is forbidden. Operating Instructions Wheel Loader TL120...
  • Page 16 Outside areas covered by general traffic regulations, e.g. on factory premises, traffic regulations should be applied in the proper manner. This should also apply with regard to drivers' licenses. Operating Instructions Wheel Loader TL120...

  • Page 17: Danger Of Falling Objects

    – cabling, or If underground power lines are encountered – limiting the operating zone of earth-moving unexpectedly or they or their protective covers are machines damaged, the machine operator must discontinue work immediately and notify the supervisor. Operating Instructions Wheel Loader TL120...

  • Page 18: Operation In Closed Spaces

    If the driver is leaving the earth-moving machine unattended, he must first turn off the engine and ensure that it cannot be started up by unauthorized persons (e.g. removing ignition keys). Operating Instructions Wheel Loader TL120...

  • Page 19: Change Of Work Attachments, Maintenance, Repair

    With the engine turned off, lower the work equipment to the ground and actuate all hydraulic control levers until there is no pressure left in the hydraulic system. Operating Instructions Wheel Loader TL120...

  • Page 20: Monitoring And Inspections

    The results of this inspection have to be recorded in writing and this record kept until the next inspection takes place. Prior to every work shift, the machine operator must check the earth-moving machine according to the inspection and maintenance plan. Operating Instructions Wheel Loader TL120...

  • Page 21: Emergency Exit

    – manual steering (without servo assistance) and – lower work equipment (only if ignition is switched on) Operating Instructions Wheel Loader TL120...
  • Page 22 Safety and Accident Prevention Operating Instructions Wheel Loader TL120...

  • Page 23: Technical Specifications

    Technical Specifications Technical Specifications Views 3.1.1 Dimensioned drawing with general- purpose bucket 2290 1280 5635 L854-6454000012 Fig. 2 Dimensioned drawing with general-purpose bucket and 405/70 R 20 tires Operating Instructions Wheel Loader TL120...
  • Page 24 Technical Specifications 3.1.2 Dimensioned drawing with multi-purpose bucket 2055 2290 1280 5625 L854-6454000014 Fig. 3 Dimensioned drawing with multi-purpose bucket and 405/70 R 20 tires Operating Instructions Wheel Loader TL120...
  • Page 25 Technical Specifications 3.1.3 Dimensioned drawing with fork lift attachment 1445 6060 L844-6454000013 Fig. 4 Dimensioned drawing with fork lift attachment and 405/70 R 20 tires Operating Instructions Wheel Loader TL120...

  • Page 26: Electrical System

    Hydrostatic travel drive with advanced driving automatics. Automatic adjustment of propulsive force and speed. Continuous speed regulation forward and in reverse. Four-wheel drive via propeller shaft connection. Max. operating 440 bar pressure - driving Table 5 Technical specifications - travel drive Operating Instructions Wheel Loader TL120...

  • Page 27: Hydraulic System

    Oscillating planetary drive axle with self-locking differential and integrated reduction gear. Rear axle (high-speed version) Oscillating planetary drive axle with self-locking differential and integrated 2-stage reduction gear. Rear axle oscillating angle ± 12° Table 8 Technical specifications - axles Operating Instructions Wheel Loader TL120...

  • Page 28: Fuels, Lubricants And Coolants

    Wheel hubs, front / rear axle 0.85 each Transmission oil Coolant 17.5 Mixture of water, additives and glycol Table 10 Fluid capacities * The hydraulic oil quantity depends on the equipment level of the machine. Operating Instructions Wheel Loader TL120...
  • Page 29 Operating and Maintenance Manual. Table 11 Specification of fuels, lubricants and coolants In conformity with the regulation lubricants of the Main Association of the German Building Industry e.V. Operating Instructions Wheel Loader TL120...

  • Page 30: Permissible Loads In Compliance With German Road Traffic Regulations (Stvzo)

    Table 13 Sound level values in compliance with directive 2000/14/EC and EN 474 Vibration values Effective values of acceleration below 0.5 m/s for entire body 2.5 m/s for upper limbs Table 14 Vibration values in compliance with directive 98/37/EEC and EN 474 Operating Instructions Wheel Loader TL120...

  • Page 31: Dimensions And Weights

    General-purpose bucket 2100 Multi-purpose bucket 2100 1.05 Earth bucket 2100 1.35 Light-material bucket 2100 1.55 Super light-material bucket 2200 Side-dump bucket 2100 0.85 High-tip bucket 2100 High-tip bucket 2200 Compost bucket 2100 Table 17 Bucket dimensions Operating Instructions Wheel Loader TL120...
  • Page 32 Table 20 Transport position of fork lift attachment If screw-on rear axle weights or rear tires with hydroinflation are used. Attention During fork lift operations, the tire pressure of the front wheels must be increased by at least 0.5 bar. Operating Instructions Wheel Loader TL120...

  • Page 33: Optional Accessories

    TEREX products. • Please note that any modification requires the written approval from the manufacturer. If our approval is not sought, our warranty expires, as does our product liability for any resulting consequential damage. Operating Instructions Wheel Loader TL120...
  • Page 34 Technical Specifications Operating Instructions Wheel Loader TL120...

  • Page 35: Operation

    • Every time the machine is taken into operation, the inspections described in Chapter 7.8, 72 must be performed. Operating Instructions Wheel Loader TL120...
  • Page 36 Operation Display elements and operator controls Attention The following list includes non-standard equipment! L824-010 Fig. 7 Operator controls Operating Instructions Wheel Loader TL120...
  • Page 37 Impulse mode - float position Parking brake 10 Power socket 11 Fuse carrier 12 Fresh air - recirculating air 13 Radio 14 Control rod for mechanical quick-attach device 15 Washer fluid tank Operating Instructions Wheel Loader TL120...
  • Page 38 Operation 25 26 27 33 34 35 36 37 38 39 40 41 42 Option "S"-version L844-010-1 Fig. 8 Instrument panel Operating Instructions Wheel Loader TL120...
  • Page 39 62 Option - flow setting for 4th control circuit, e.g. 39 Not assigned* rotating speed of sweeper 40 Windshield washer function front/rear 41 Windshield wiper, front * for non-standard equipment 42 Windshield wiper, rear 43 Switch for air-conditioning and temperature control Operating Instructions Wheel Loader TL120...
  • Page 40 Engine damage Avoid damaging the engine by: • not driving the engine at full throttle straight away. L824-011 Fig. 9 Starting the engine • driving with restraint until the engine has reached its operating temperature. Operating Instructions Wheel Loader TL120...
  • Page 41 Do not switch off the engine when running at full throttle, but allow it to run for a short time without load at low idle-running speed. • Turn the ignition key to "0". • The engine stops automatically. Operating Instructions Wheel Loader TL120...

  • Page 42: Driver's Seat / Steering Wheel Tilt Adjustment

    • Adjust steering-wheel tilt. • Release lever. Height adjustment of steering wheel (option) • Push up lever (12/4). • Adjust steering-wheel height. • Release lever. L824-014 Fig. 12 Tilt and height adjustment of steering wheel Operating Instructions Wheel Loader TL120...
  • Page 43 Setting 2 Driving light (low beam / high beam). Switch from one to another by lifting the steering-column switch (13/1). L824-015 Blue indicator lamp for high-beam Fig. 13 Heating, ventilation, air-conditioning, and lighting (13/30) lights up. Operating Instructions Wheel Loader TL120...

  • Page 44: Hydroinflation Of Tires

    16/70-20 EM 10 PR 365/80 R 20 EM 375/75 R 20 XM Table 21 Water-antifreeze filling - Recommendation when filled to 75% with antifreeze protection to -30 °C MgCl = Magnesium chloride O = Water Operating Instructions Wheel Loader TL120...

  • Page 45: Driving, Steering And Braking

    (14/35). By doing so, the switch (14/36) on the instrument panel is without function. The direction of travel is preselected using the travel direction preselection switch on the joystick (14/7). Operating Instructions Wheel Loader TL120...
  • Page 46 The hydrostatic travel drive acts Fig. 15 Driving off and coming to a halt as a non-wearing auxiliary brake. • Operate the brake-inching pedal (15/2) as required. • Also refer to 4.8.3, 47. L824-018 Fig. 16 Height mark Operating Instructions Wheel Loader TL120...
  • Page 47 - irrespective of engine speed - until the machine comes to a stop. This mechanism permits sensitive driving at maximum engine speed, e.g. when loading a truck, where fast working cycles are required. Operating Instructions Wheel Loader TL120...
  • Page 48 Switch off the working hydraulics (19/35). 35 36 Attention Only press when machine is stationary! • Check the function of the direction indicators, hazard warning lights, horn, low/high beam. • Close the cab door. L824-020 Fig. 19 Driving on roads Operating Instructions Wheel Loader TL120...
  • Page 49 Danger to life due to rolling away of machine. 35 36 If necessary, secure the machine with chocks to prevent it from rolling away. L824-021 Fig. 20 Switching off the machine (parking) Operating Instructions Wheel Loader TL120...
  • Page 50 Operation Operating Instructions Wheel Loader TL120...

  • Page 51: Working Operation

    Additional control circuit (21/47) in Position 1. • Press right-hand / left-hand push-button switch (21/5) (e.g. open/ close multi-purpose bucket). Attention The additional control circuit must always be switched off unless additional equipment is operated. L824-022 Fig. 21 Operating the loader Operating Instructions Wheel Loader TL120...
  • Page 52 • Move the attachment to operating position. L844-023 Fig. 22 Operating the loader • Press switch (22/56). • Operate the turning knob (22/62) to adjust hydraulic power (e.g. rotational speed). Operating Instructions Wheel Loader TL120...

  • Page 53: Changing Work Attachments

    It is essential to consult your dealer before mounting such a work attachment. Danger of injury due to unsecured work attachments. • When attachments have been removed, they must be secured against overturning to avoid possible injury to persons. Operating Instructions Wheel Loader TL120...
  • Page 54 Fig. 23 Quick-attach system • Ensure that the work attachment and the lock are properly seated. • The control rod is kept in the left-hand storage box in the cab. Operating Instructions Wheel Loader TL120...
  • Page 55 • The additional control circuit (24/47) must be switched off unless a hydraulically operated additional attachment is connected. Fig. 25 Releasing and locking the hydraulic quick-mount hitch Operating Instructions Wheel Loader TL120...

  • Page 56: Notes On How To Work With The Machine

    Plan the excavating work in such a way as to enable the wheel loader to drive forward with full bucket out of the excavation. • Keep the outward run of the excavation as flat as possible. Operating Instructions Wheel Loader TL120...
  • Page 57 Danger to life due to rolling away of machine. • Always secure the machine with chocks and relieve the hydraulic system of pressure before carrying out maintenance La85328 and repair work. Fig. 27 High-pressure relief valve Operating Instructions Wheel Loader TL120...

  • Page 58: Transport Of The Machine

    (Fig. 29) in the correct manner. Danger to life due to disregarding the total transport height. • It is essential to observe the clearance L824-030 heights of tunnels, bridges, etc. Fig. 29 Lashing for transport Operating Instructions Wheel Loader TL120...

  • Page 59: Care And Maintenance

    Every 2000 operating hours After every 2000 operating hours or after 2 years 7.7.4, 70 Table 22 Intervals The first date to arrive always applies. Also applicable if new or overhauled diesel engines are put into operation. Operating Instructions Wheel Loader TL120...

  • Page 60: Warranty

    – transmission oil: 500 operating hours – engine oil: 100 operating hours Based on the first results, the laboratory recommends the interval for the next sampling. Ask your TEREX dealer for an information booklet detailing the scope and procedures. Warranty...

  • Page 61: Inspection Parts And Aids

    Extras TEREX hydraulic oil, mineral 4 312 005 050 TEREX hydraulic oil, biodegradable Please contact your TEREX dealer for further information. Transmission oil (SAE 85 W 90 LS) 4 314 005 775 Engine oil (SAE 15 W 40) 4 312 905 759...

  • Page 62: Care And Cleaning

    – Ensure that there is good contact of terminal carried out. connections when installing the battery. – Only tighten terminal screws "hand-tight" to prevent deformation of the terminal cones. Operating Instructions Wheel Loader TL120...
  • Page 63 Winter fuel In winter, only use winter diesel fuel to prevent clogging of the fuel system due to paraffin separation. Even if winter diesel fuel is used, disturbing separations may occur at very low temperatures. Operating Instructions Wheel Loader TL120...

  • Page 64: Checking, Maintenance And Inspection Plans

    Care and Maintenance Checking, maintenance and inspection plans 7.7.1 Initial inspection (hand-over inspection) L854-6454_R001 Fig. 30 Initial inspection Operating Instructions Wheel Loader TL120...
  • Page 65 Visual inspection for tightness of all hoses, pipes, cylinders, etc. Check function of electrical indicating and warning elements, and the lighting system. Initial delivery/handing-over certificate and return to manufacturer. Table 25 Work involved in initial start-up Operating Instructions Wheel Loader TL120...
  • Page 66 Care and Maintenance 7.7.2 Daily and weekly tasks Inspection and maintenance jobs to be performed by operating personnel. 14 15 13 15 L854-6454_R002 Fig. 31 Inspection and maintenance plan Operating Instructions Wheel Loader TL120...
  • Page 67 • Shorten the inspection and cleaning intervals. Check the function, condition and completeness of safety devices. Grease machine according to overview of lubricating points. 7.7.3, 68 Table 27 Weekly tasks Operating Instructions Wheel Loader TL120...
  • Page 68 Care and Maintenance 7.7.3 Overview of lubricating points Machine damage due to damaged lubricating nipples. • Replace damaged grease nipples immediately and check if grease passes through. L854-6454_R003 Fig. 32 Overview of lubricating points Operating Instructions Wheel Loader TL120...
  • Page 69 Tilt control lever – Linkage Mech. quick-mount hitch Hydr. quick-mount hitch Steering cylinder – Front-end Pivot point Steering cylinder – Rear-end Rear axle bearing Door hinges Multi-purpose bucket Multi-purpose bucket cylinder Table 28 Lubricating points Operating Instructions Wheel Loader TL120...
  • Page 70 27 Check smooth running of operator controls and adjust if necessary. Table 29 Inspection plan At least once every two years. Extension of oil change intervals according to oil sample analysis and laboratory report 7.2, 60. Within warranty. Operating Instructions Wheel Loader TL120...
  • Page 71 41 Initial inspection card and return to manufacturer. 7.3, 60 Table 29 Inspection plan At least once every two years. Extension of oil change intervals according to oil sample analysis and laboratory report 7.2, 60. Within warranty. Operating Instructions Wheel Loader TL120...

  • Page 72: Inspection And Maintenance Work

    Remove the cover from the bottom rear-end. • Place suitable drip pans under the opening. Danger of scalding due to hot oil getting into contact with skin or eyes. • Wear appropriate protective clothing/safety goggles. Operating Instructions Wheel Loader TL120...
  • Page 73 • Start the engine and run at low idle speed for Fig. 34 Engine oil approx. 2 min. • Switch off the engine. • Check the oil level and top up oil if required. Operating Instructions Wheel Loader TL120...
  • Page 74 Before the beginning of the cold season, the antifreeze protection must be checked. • The antifreeze is factory-set to approx. minus 25 °C. If temperatures are lower, the level of antifreeze must be adjusted accordingly. Fig. 36 Combined cooler Operating Instructions Wheel Loader TL120...
  • Page 75 • Start the engine and bring to operating temperature, switch off and allow to cool down. • Check the coolant level and top up (several times, if required). Fig. 38 Changing the coolant Operating Instructions Wheel Loader TL120...
  • Page 76 • Open the drain (40/2) and collect any escaping water in a suitable container. • Dispose of the water according to regulations. • Close again the drain (40/2). Fig. 40 Draining the water separator Operating Instructions Wheel Loader TL120...
  • Page 77 • Before starting the engine, operate the fuel pump one minute to remove air from the filter. • Start the engine and check for leaks. Fig. 43 Changing the fuel filter Operating Instructions Wheel Loader TL120...
  • Page 78 Check the tightness of the air intake between the air filter and the engine. • Examine rubber parts for damage and replace if necessary. L854-42 Attention Fig. 45 Cleaning the dust ejection valve • Replace damaged parts immediately! Operating Instructions Wheel Loader TL120...
  • Page 79 – if the service indicator switches on after the main L824-044 cartridge has just been serviced – if the main cartridge is damaged Fig. 46 Filter maintenance indicator lamps – if the safety cartridge is damaged Operating Instructions Wheel Loader TL120...
  • Page 80 Grasp the safety cartridge (47/3) by the two clips (47/6), withdraw by twisting slightly to and fro, and dispose of it. • Insert a new safety cartridge and check that it is correctly positioned. • Re-install the main cartridge. Operating Instructions Wheel Loader TL120...
  • Page 81 Machine damage due to damaged main cartridge. Never continue to use damaged main Fig. 48 Cleaning the main cartridge cartridges. If in doubt, use a new one. Operating Instructions Wheel Loader TL120...
  • Page 82 To check the tension, press the V-belt with your thumb in the middle of the greatest free length, and measure the sag. Attention Using medium thumb pressure of approx. 45 N (approx. 45 kg), the V-belt sag should equal 10 mm. Operating Instructions Wheel Loader TL120...
  • Page 83 Re-tighten the fastening screws 49/1, 49/3 and 50/1. • Check the tension again. Attention • If V-belts have been replaced, their tension Fig. 50 Tensioning and checking V-belts must be checked again after approx. 20 operating hours. Operating Instructions Wheel Loader TL120...
  • Page 84 • Check the valve lash of valves 52/3 and 52/4 of cylinder no. 2 and adjust if required. Fig. 52 Valve adjustment • Re-mount the cylinder head cover along with a new seal. Operating Instructions Wheel Loader TL120...
  • Page 85 Release the bleeder screw (54/2) on the inch valve of the "travel" hydraulic pump; connect the bleeder hose and insert it in the collecting bottle. • Perform the bleeding process. L854-051 Fig. 54 Bleeding the brake Operating Instructions Wheel Loader TL120...
  • Page 86 • Re-mount the cover on the front-end. 7.8.8.3 TL120 S - Changing the rear axle brake oil and bleeding the brake Attention • Collect the waste oil in a suitable container and dispose of according to regulations.
  • Page 87 Fig. 56 Checking hydraulic oil level, changing the hydraulic oil • Fill up with clean hydraulic oil using the breather. To do so, remove the filter head (56/3). • Screw back on the breather head. • Screw back in the oil dipstick. Operating Instructions Wheel Loader TL120...
  • Page 88 Screw back on the filter cover (58/1) and tighten using a torque of 20 Nm. • Screw back in the oil dipstick. • Check the tightness of the filter by means of a test run. L834-053 Fig. 58 Changing the filter insert Operating Instructions Wheel Loader TL120...
  • Page 89 Clean the screen (59/4) and check for damage; replace if required. • Screw in new breather (59/2) with O-ring (59/3) and tighten by hand. • Screw back in the oil dipstick. L834-054 Fig. 59 Replacing the breather Operating Instructions Wheel Loader TL120...
  • Page 90 Fig. 60 Changing the axle oil of the front axle • Carefully close the drain plugs (60/2). • Pour in oil using the filling hole until oil escapes from the checking tap. • Carefully close the inspection plug (60/1) and the filler plug (60/3). Operating Instructions Wheel Loader TL120...
  • Page 91 Pour in oil using the filling hole (61/3) until oil escapes from the checking tap. • Carefully close the inspection plug (61/1) and the filler plug (61/3). Fig. 62 TL120 S - Changing the axle oil of the rear axle Operating Instructions Wheel Loader TL120...
  • Page 92 Fig. 63 Checking and replacing the axle oil Attention Note that the tightening torque of 460 Nm applies to the wheel nuts M 20 x 1.5. • When fitting a wheel, tighten the nuts to the correct torque crosswise in several stages. Operating Instructions Wheel Loader TL120...
  • Page 93 Only check the battery with the engine not running. • The acid level should be approximately 10 mm above the edges of the plates. Top up with pure distilled water where necessary. Attention This check is not necessary for maintenance- free batteries. Operating Instructions Wheel Loader TL120...
  • Page 94 • Check the function of the warning equipment. 7.8.16 Cab ventilation dust filter The air intake for the heater and fresh air supply of the cab features a dust filter, optionally a charcoal/ pollen filter. Operating Instructions Wheel Loader TL120...
  • Page 95 Re-install the ventilation louver. 7.8.17 Windshield washer system • Topping up the windshield washer tank (66/1) as required. L854-062 • Add antifreeze when temperatures are around or Fig. 66 Top up the windshield washer tank below freezing. Operating Instructions Wheel Loader TL120...
  • Page 96 - room. Coat connections with a little • Lubricate the machine according to the pole grease. lubrication plan. • Seal off the air intake opening of the air filter system and the exhaust pipe opening. Operating Instructions Wheel Loader TL120...

  • Page 97: Troubleshooting

    Repair or replace Solenoids of valve damaged Repair or replace Neutral position incorrectly adjusted Check, re-calibrate (call Service Agent) Internal damage to travel pump Replace travel pump Engine idling too high Re-adjust Table 31 Table of faults Operating Instructions Wheel Loader TL120...
  • Page 98 Travel pump does not open fully, pilot pressure too Nozzles clogged, check, repair Internal damage to travel pump or travel motor Replace units Travel motor mis-adjusted Re-adjust travel motor Table 31 Table of faults Operating Instructions Wheel Loader TL120...
  • Page 99 Check suction line and repair if required Main pressure relief valve damaged Check and replace if necessary Hydraulic pump damaged Check, repair or replace Hydraulic pump drive mechanically interrupted Check and repair Table 31 Table of faults Operating Instructions Wheel Loader TL120...
  • Page 100 Starting system does not work satisfactorily Check charge capacity of battery Test starter function Check connection and condition of power and battery ground cables Check function of ignition lock, replace if necessary Table 31 Table of faults Operating Instructions Wheel Loader TL120...
  • Page 101 Appendix Appendix Operating Instructions Wheel Loader TL120...
  • Page 102 Appendix Hydraulic system Fig. 67 Hydraulic system including options Operating Instructions Wheel Loader TL120...
  • Page 103 Release valve (only if Pos. 20 and 21 installed) Manual transmission (high-speed version) Valve (high-speed version) 4th control circuit Rear axle brake (high-speed version) Joystick, steering (option) Open return (option) Distributor for hand-held hammer (option) Table 32 Legend Fig. 67 Hydraulic System Operating Instructions Wheel Loader TL120...

  • Page 104: Equipment Options

    To do so, proceed as follows: • Stop the machine in the proper manner. • Switch off the ride control system (68/46). • Remove the front-end cover. • Pull button (69/1). Operating Instructions Wheel Loader TL120...
  • Page 107 Hydraulic oil return filter ... . . 88 Hydraulic oil tank ....87 Hydraulic system ... 21 Operating Instructions Wheel Loader TL120...
  • Page 108 Work stoppages ....18 Working operation ....51 Operating Instructions Wheel Loader TL120...

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