Page 1 NOTICE Komatsu has had the operating and maintenance in- structions translated into all the languages of the mem- ber states in the European Union. Should you wish to have a version of the operating instructions in another language, please don’t hesitate to ask at your local...
Page 2 Introduction 1. Introduction WA70-5 – VEAM320100...
Page 3: Foreword
If the operating instructions have been lost or if they have become unreadable, because they are dirty, you may receive a new copy from Komatsu or your local Komatsu dealer. If the machine is resold, the operating instructions, the EU Declaration of Confor- mity (CE), and the licence are to be handed over to the new owner.
Page 4: Eu Directives
Komatsu or your responsible Komatsu dealer. These operating instructions may refer to attachments and spe- cial equipment not available from your local Komatsu dealer. Should you require attachments or special equipment, ask your responsible Komatsu dealer.
Page 5 Should you have any questions concerning standards and guide- lines in the respective country the machine is to be used in, please ask your Komatsu dealer before you start commissioning the machine. In addition to the operating instructions, you must also adhere to all legal regulations on public traffic and all applicable regulations on prevention of accidents.
Page 6: Safety Information
This word is used for precautions which have to be taken in order to avoid situations which could result in shortening the service lift of the machine. The safety instructions are listed in the chapter "2. Safety" on page 2-1 and following. WA70-5 – VEAM320100...
Page 7 Please contact your local Komatsu dealer if you have any doubts about the safety of any procedures.
Page 8: Introduction
In any case, neither you nor any other person are/is authorised to perform work and functions explicitly prohibited in these operating instructions. Refer to chapter "3.3.9. Working with the wheel loader" on page 3-55 for more details. WA70-5 – VEAM320100...
Page 9 If the machine is used for a pur- pose that is not listed in this manual Komatsu cannot bear any responsibility for safety. All consideration of safety in such opera- tions is the responsibility of the user.
Page 10: Engine Name-Plate
1.4. Location of plates 1.4. Location of plates 1.4.1. Machine identification plate Position of the identification plate (1) (see enlargement) Serial no. stamp marking (2) Machine identification plate (PIN) GK020001GB 1.4.2. Engine name-plate Engine name-plate with serial no. WA70-5 – VEAM320100...
Page 11: Axle Serial No. Plate
1.4.4. Transmission serial no. plate This plate is located in travel direction front, above the transmis- sion output (1). 1.4.5. ROPS/FOPS-Cab serial no. plate This plate is located on the right inside cab on the rear beam (1). 1-10 WA70-5 – VEAM320100...
Page 12: Table Of Contents
Machine serial No.: Engine serial No.: Name of Dealer: Phone: Address: Fax: Service Personnel for your machine: E-mail Table of contents1.Introduction..............1-1 1.1. Foreword ...............................1-2 EU Directives.............................1-3 1.2. Safety information ............................1-5 1.3. Introduction..............................1-7 1.3.1. Intended use............................1-7 WA70-5 – VEAM320100 1-11...
Page 13 Workplace safety ..........................2-8 In the driver's cab..........................2-8 Indoor operation..........................2-9 Gas, dust, and inflammable vapours ....................2-9 Mirrors, windows and lighting ......................2-9 2.2.2. Machine operation .......................... 2-10 Before you start the engine......................2-10 1-12 WA70-5 – VEAM320100...
Page 14 Socket (12 V) ..........................3-27 3.2.7. Door unlocking system ........................3-27 3.2.8. Alarm horn for reverse driving – option................... 3-27 3.2.9. Fuses .............................. 3-28 3.2.10. Slow-blowing fuses ......................... 3-29 3.2.11. Adjusting the heater and ventilation system ................... 3-30 WA70-5 – VEAM320100 1-13...
Page 15 Removing the work unit ........................3-68 Picking up the multi-purpose bucket ....................3-69 Removing the multi-purpose bucket ....................3-71 Level indicator for the bucket......................3-71 3.3.12. Parking the machine ........................3-72 3.3.13. Switching off the engine........................3-73 1-14 WA70-5 – VEAM320100...
Page 16 Brakes ............................4-16 4.6.5. Steering ............................4-16 4.6.6. Axles ............................... 4-17 4.6.7. Driver's cab............................. 4-17 5. Maintenance ....................5-1 5.1. Maintenance guide............................5-2 5.2. Maintenance basics ........................... 5-10 5.2.1. Oil, fuel and coolant specifications ....................5-10 WA70-5 – VEAM320100 1-15...
Page 17 Lubrication of articulated steering....................5-37 5.7.6. Maintenance after the first 50 operating hours ................5-38 Checking the service brake and oil level, refilling oil ..............5-38 Battery – checking the acid level ....................5-39 Lubrication of work unit........................5-40 1-16 WA70-5 – VEAM320100...
Page 18 Lubrication, drive shaft........................5-67 6. Technical data..................... 6-1 6.1. Technical data .............................. 6-2 6.2. Noise emission levels..........................6-3 6.3. Vibration level .............................. 6-3 6.4. Limit values for slopes ..........................6-3 7. Special equipment and attachments ............7-1 WA70-5 – VEAM320100 1-17...
Page 19 Precautionary measures for switching on the E.C.S.S-electronics........... 7-2 7.1.3. Operating the E.C.S.S-electronics....................7-3 Switching ON the E.C.S.S.-electronics ..................... 7-3 Switching OFF the E.C.S.S-electronics .................... 7-3 7.1.4. Precautions when handling the accumulator ..................7-4 8. Index......................8-1 9. Notes ......................9-1 1-18 WA70-5 – VEAM320100...
Page 20: Dimensions, Weights And Operating Data
These values refer to machines with 12.5 - 18 tyres Ground clearance, axle /transfer gear ground clearance, drive shaft Centre of gravity, height above axle centre additional counterweight CTW = Centre of gravity, distance to front axle WA70-5 – VEAM320100 1-19...
Page 21: Ce-Conforming Equipment
1.6.2. CE-conforming equipment – part 2 CE-conforming equipment – Work load of fork Work load of fork carrier Weight Type Part No. carrier STD with CTW kg / pair kg / pair Fork carrier WA70-5 42U-70-22050 1,800 1-20 WA70-5 – VEAM320100...
Page 22: Manufacturer-Supplied Ce-Conforming Equipment
The dimension Sh (smallest tyre radius) must be added to the dimension D2. The figure G (in kg) represents the maximum load (equipment and operating load) which may act upon this point. WA70-5 – VEAM320100 1-21...
Page 23 1.6. CE-conforming equipment Introduction 1-22 WA70-5 – VEAM320100...
Page 24 Bucket connection dimension d1- d2 horizontally displaced Distance lower edge of bucket - drill hole of boom bolt 51° 860 mm 312 mm ø 40 ø 40 15 mm 200 mm Tyre 12,5 - 18 Dunlop 42U-70-22010 Bucket 0.85 m WA70-5 – VEAM320100 1-23...
Page 25: Loading And Securing
Always secure articulated joint if maintenance or repair work is to be carried out or if the machine is going to be lifted or transported. An articulated joint may jack-knife unexpectedly if not secured. Danger of injury if joint jack-knifes. 1-24 WA70-5 – VEAM320100...
Page 26 Due to safety reasons and to avoid consequential damages, it is prohibited to attach other points (such as axles, drive shafts, articulated joint, bucket teeth) than those specified for lifting and securing. It is also prohibited to attach ropes etc. to the driver's cabin. WA70-5 – VEAM320100 1-25...
Page 27 1.7. Loading and securing Introduction 1-26 WA70-5 – VEAM320100...
Page 28: Safety
Safety 2. Safety DANGER Failure to adhere to these safety instructions can lead to accidents with serious injuries! Read and adhere to all safety instructions. This chapter also contains safety instructions for special equip- ment and attachments. WA70-5 – VEAM320100...
Page 29: General Safety Measures
2.1.3. Emergency exit In an emergency situation, you can use the window on the right- hand side of the driver's cab (2) (seen from the driving direction) as an emergency exit. WA70-5 – VEAM320100...
Page 30: Clothing And Personal Protection
2.1.5. Machine modifications Komatsu will not be liable for modifications performed without prior expressed consent by the manufacturer. Komatsu will not be liable for any injuries or damage resulting from unapproved modifications. 2.1.6. Before you leave the driver’s seat 1. Lower the work unit onto the ground 2.
Page 31: Mounting And Dismounting
Carefully and completely remove wooden chippings, leaves, paper, and other highly inflammable materials that may have collected in the engine compartment, since they could cause a fire. A0055030 Do not operate the machine in the vicinity of naked light. WA70-5 – VEAM320100...
Page 32: Protection Against Asbestos Dust
Do not insert any part of your body in the operating range of mov- ing parts, such as work unit and cylinder, or machine and work unit. Never stand in a hazardous area. Distances vary when the work unit or steering are operated, this may lead to serious inju- ries. WA70-5 – VEAM320100...
Page 33: Working At High Temperatures
FOPS. If the FOPS is modified without permission or damaged, its stability is impaired. In this case, the FOPS must be replaced, since its cor- rect function can no longer be guaranteed. WA70-5 – VEAM320100...
Page 34: Attachments
Do not use attachments that have not been approved of by Komatsu or the responsible Komatsu dealer. If you use attachments which have not been approved of, safety, correct operation, and service life of the machine may be impaired.
Page 35: Safety Precautions During Operation
Immediately repair any damage. Tighten loose screw connections. Check the safety belt, the belt buckle, and the fastening elements for damage and wear. Replace worn or damaged parts. WA70-5 – VEAM320100...
Page 36: Indoor Operation
Adjust the rear-view mirror in such a way that you have an excellent view of the rear from the driver's seat. Keep the mirrors clean. Ensure that the complete lighting system operates properly and that it is correctly adjusted. Immediately replace broken window panes by new ones. WA70-5 – VEAM320100...
Page 37: Machine Operation
Before you start reversing, sound the horn to warn persons within or near the operating area. When working in potentially dangerous areas or areas with obstructed view, ask another person to regulate and super- vise traffic. 2-10 WA70-5 – VEAM320100...
Page 38: Driving
Then apply the parking brake. Lower the work unit. AE060810 When driving on a hill with a load, drive uphill: in forward direction downhill: in reverse direction WA70-5 – VEAM320100 2-11...
Page 39: Emergency Lowering System
1. Make sure that nobody is standing below the work unit. 2. Press slowly the multi-function lever into position ‘’P’’. The work unit is lowered. 2-12 WA70-5 – VEAM320100...
Page 40: Working Close To Power Lines
3. Try to move the machine out of the range of influence of the power line by moving it away from the line, moving away the work unit, etc. 4. Have the power in the line switched off. WA70-5 – VEAM320100 2-13...
Page 41: Loading
To stop the machine, lower the bucket onto the ground. The load may vary considerably, depending on the structure of the snow. For this reason, reduce the load and pay atten- tion that the machine does not start to skid. 2-14 WA70-5 – VEAM320100...
Page 42: Height Limitation
19.685 in to the most unfavourable stroke position with the boom in (500 mm) horizontal position. The centre of gravity of the load lies 500 mm from the fork 75_156 back and the fork tines (see drawing). WA70-5 – VEAM320100 2-15...
Page 43 If it cannot be avoided, drive backwards. If this is not possible, ask a colleague to assist you by clearing your way and indicating to you any obstacle. In this case, drive very slowly and extremely careful. 2-16 WA70-5 – VEAM320100...
Page 44 Lift the boom to the desired transporting height only shortly before approaching the deposit surface. This prevents that the load is damaged during the lifting. Lower the forklift truck attachment completely to the ground before quitting the driver's cab. WA70-5 – VEAM320100 2-17...
Page 45: Parking The Machine
Before you leave the machine, completely lower the work unit onto the ground. Secure the control lever of the work hydraulic system against accidental operation. Switch off the motor. Lock all points that can be locked and store the key in a safe place. 2-18 WA70-5 – VEAM320100...
Page 46: Transport
When moving the machine on a transport vehicle, adhere to all applicable motor vehicle traffic regulations. Determine the transport route, taking into account the width, length, height, and weight of the load and, if necessary, have this approved by the responsible authorities. WA70-5 – VEAM320100 2-19...
Page 47: Precautions For Maintenance
Always attach the warning sign to the control lever for the work hydraulic system to warn other persons that work is being performed on the machine. If required, put up additional warning signs around the machine. You may purchase these warning signs from your Komatsu dealer. 75_060GB Tools Only use tools which are suitable for the task you want to carry out.
Page 48 The person performing the maintenance measures must take care not to touch or get caught by moving parts. Securing the articulated steering Before starting maintenance, secure the articulated steering against accidental movement using the locking bar on the right side (position 'A'). WA70-5 – VEAM320100 2-21...
Page 49 (2) by hand. 7. With the engine off, lower the boom slowly until it rests on the support device (1). 8. Set the drive direction selector to "N" and move the working hydraulic's catch lever to position "1". 2-22 WA70-5 – VEAM320100...
Page 50 2 screws on the left and 2 screws on the right (1). 6. Take the hand pump lever out of its holder on the radiator (2) and insert it into the receptacle of the pump (3). WA70-5 – VEAM320100 2-23...
Page 51 9. Set the lever at the pump to "pump down" and pump the cab downward until the safety rod is secure against the right side of the cab floor. 10. Take the lever out of the pump. 2-24 WA70-5 – VEAM320100...
Page 52 (the resistance at the lever increases markedly). NOTE Make sure that the guide pin (arrow) on the left of the rear frame is inserted into the guide bushing of the cab. WA70-5 – VEAM320100 2-25...
Page 53 4. Screw in the fastening screws for the cab (2 left, 2 right) and tighten the screws. Torque = 230 Nm. 5. Remove the lever from the pump and fasten it to the radiator. 6. Close the bonnet. 2-26 WA70-5 – VEAM320100...
Page 54: During Maintenance
Specific measures Always wear appropriate safety clothes and safety goggles when you perform grinding, welding, use a sledge hammer or carry out similar work. WA70-5 – VEAM320100 2-27...
Page 55 To check the coolant level, first switch off the engine and wait for the cooling system to cool down. Then, check the coolant level in the expansion tank. Slowly unscrew the cap to let the pressure escape. If required, top up water in the expansion tank. 2-28 WA70-5 – VEAM320100...
Page 56 If you have been hit by an oil jet, immediately go and see a doctor and explain what has happened. WA70-5 – VEAM320100 2-29...
Page 57 Danger of injury! Pressure accumulator is filled with highly pressurised nitrogen. Do not open or damage the pressure accumulator. Immediately inform your Komatsu dealer, if you detect malfunctions or defects of pressure accumulators. Filling the pressure accumulator with gas or topping up gas in the pressure accumulator is strictly limited to persons authorised to handle highly pressurised gas.
Page 58: Tyres
The values for the tyre pressure and for the permitted speed cor- respond to the manufacturer specifications and refer to standard operations. If you want to perform special operations, contact the responsible Komatsu dealer or the tyre manufacturer. WA70-5 – VEAM320100 2-31...
Page 59 If, however, a tyre tips over despite this safety measure, do not try to stop it, but get out of the way as quickly as possible, since tyres for construction machines are very heavy and may cause serious injuries. 60˚ – 70˚ GK100224 2-32 WA70-5 – VEAM320100...
Page 60: Safety Labels On The Machine
2.4. Safety labels on the machine All safety labels must be kept clean all times. Missing or damaged safety labels must be replaced. 2.4.1. Positions and order numbers of safety labels (42T-93-21B60) (42T-93-21B650) (42T-93-21A20) 42T-93-21B70 (42T-93-21C10) G0080162.eps 42T-93-21B80 WA70-5 – VEAM320100 2-33...
Page 61 2.4. Safety labels on the machine Safety 2-34 WA70-5 – VEAM320100...
Page 62 Danger of explosion due to pressure accumulators Caution, hot water/oil P/N: 421-93-H1300 P/N: 421-93-H1280 Keep a safe distance to the boom Use Komatsu oil only P/N: 421-93-H1380 P/N: 421-93-H1390 Keep a safe distance to the machine’s articulated joint 10 Keep a safe distance to the attachments...
Page 63 2.4. Safety labels on the machine Safety 2-36 WA70-5 – VEAM320100...
Page 64: Operation
Operation 3. Operation WA70-5 – VEAM320100...
Page 65: General View
3.1. General view Operation 3.1. General view 3.1.1. General view of the machine Tipping lever Lift cylinder Bucket cylinder Front wheel Indicator lamp, Headlamp Boom Rear wheel Bucket WA70-5 – VEAM320100...
Page 66: Controls And Indicators
Control lever for special equipment Direction indicator lever Accelerator pedal Inch-Brake pedal Socket (12 V) Speed range 2 Variable shift control switch Parking brake Car radio – option Steering column adjustment Safety lever for work hydraulic Differential lock 100% WA70-5 – VEAM320100...
Page 67: Switches, Controls And Warning Lights
Control lamp in the switch of the 3rd control circuit - Optional Switch and control lamp differential lock Control lamp in Sprayer switch 100% - Optional Coolant temperature indicator Control lamp: Speed range 2 Operating hour meter WA70-5 – VEAM320100...
Page 68: Description Of The Individual Elements
Measuring indicators This group comprises the fuel gauge, the operating hour meter and the temperature indicator of the coolant. Warning lights This group comprises the warning lights for charging current, air filter, engine oil-pressure and brake fluid supply. WA70-5 – VEAM320100...
Page 69: Warning Lights
If the air filter is polluted, the air filter warning light lights up in red. In this case, you must clean or exchange the air filter. Proceed as described in chapter. "Air filter, removing, re-stalling and cleaning the filter insert" on page 5-47. 75_013 WA70-5 – VEAM320100...
Page 70 If this is the case, you have to drain the water from the water sep- arator. Proceed as described in the chapter Maintenance "Water separa- tor at the fuel filter – Draining water and dirt sediments" on page 5-27. WA70-5 – VEAM320100...
Page 71: Control Lamps
Control lamp in E.C.S.S. switch – option High beam control lamp Control lamp in the switch of the 3rd control circuit - Optional Control lamp in Sprayer switch - Optional Control lamp: Speed range 2 Control lamp: Differential lock 100% WA70-5 – VEAM320100...
Page 72 You can start the engine, after the control lamp has gone out. 5. Heated rear windscreen indicator The control lamp of the heated rear windscreen lights up, if you have switched on the heated rear windscreen. GK100839 WA70-5 – VEAM320100...
Page 73 The control lamp in the switch flashes green when the E.C.S.S. are switched on. 11. High beam control lamp The high beam control lamp illuminates when the high beam lights are switched on. The control lamp also illuminates when you press the headlamp flasher. GK100840 3-10 WA70-5 – VEAM320100...
Page 74 As long as you keep the button pressed, the control lamp remains lit and the differentials in the axles are locked 100%. If you release the button (2), the differentials are unlocked and the control lamp goes out. WA70-5 – VEAM320100 3-11...
Page 75: Measuring Indicators
If the operating hour meter is ON, the icon on top of the operating hour meter is flashing. 3-12 WA70-5 – VEAM320100...
Page 76 Proceed as described in chapter "4.6. Other troubles" on page 4-10. If there is no electric contact applied to the sensor, only the top LED lights up. WA70-5 – VEAM320100 3-13...
Page 77: Switches
3.2. Description of the individual elements Operation 3.2.2. Switches Aside the battery 3-14 WA70-5 – VEAM320100...
Page 78 Switching stage '1' locks in permanently and is used to switch on/off the windscreen wiper. GK100814 If you hold the switch pressed in switching stage '2', the wind- screen washer is only operated for the time you keep the switch pressed. WA70-5 – VEAM320100 3-15...
Page 79 After you have passed the bend, the direction indicator lever auto- matically returns to its home position and the direction indicator will be switched off. 5. Horn button The horn sounds when you press the horn button. GK100822 3-16 WA70-5 – VEAM320100...
Page 80 You can change the driving direction of the machine with the driving direction switch.. Position Forward driving Position Neutral position Position Reverse driving NOTE You can only start the engine if the driving direction switch is switched to the neutral position 'N'. WA70-5 – VEAM320100 3-17...
Page 81 The temperature rotary switch permits to adjust continuously the capacity of the heating system from 'cold' (heating OFF) to 'warm'. GK100827 11. Heated rear windscreen switch This rotary switch is used to switch on/off the heated rear wind- screen. 3-18 WA70-5 – VEAM320100...
Page 82 If the machine drives slower than 5 km/h, the E.C.S.S-elec- tronics is switched off and the control lamp on the instrument panel goes out. However, the control lamp in the E.C.S.S- electronics switch remains lit in green. WA70-5 – VEAM320100 3-19...
Page 83 As long as the control lamp is lit, the sprayer is on. If you press the switch again, the sprayer (water supply) is switched off and the control lamp goes out. 3-20 WA70-5 – VEAM320100...
Page 84: Control Levers And Pedals
3.2. Description of the individual elements 3.2.3. Control levers and pedals Brake pedal Parking brake Steering column adjustment Accelerator pedal Multifunctional lever Control lever for special equipment Safety lever for the work hydraulic system Switching lever for bucket (without fig.) WA70-5 – VEAM320100 3-21...
Page 85 The lever (2) for adjusting the steering column (1) position permits to incline the steering column smoothly in two directions (front or back). The adjustment range is 125 mm. Proceed as described in chapter "Adjusting the steering column" on page 3-41 3-22 WA70-5 – VEAM320100...
Page 86 å Hold The boom is held in position. ã H Raise The boom is raised in position. ä Tilt IIn this position, the bucket is tilted. à A Dump In this position, the bucket is dumped. WA70-5 – VEAM320100 3-23...
Page 87 ‘1’, ‘2’ or ‘3’. If you do not heed this note, the work hydraulic system will operate in order to counteract overpressure thus unnec- essarily heating up the oil. 3-24 WA70-5 – VEAM320100...
Page 88 (see "6. Control lever for special equipment" on page 3-24). Position the control lever for special equipment oper- ates the multi-purpose bucket. Position the control lever for special equipment oper- 75_160 ates the quick-change unit. WA70-5 – VEAM320100 3-25...
Page 89: Articulated Steering Locking
You can use the traction device (hitch) to tow off, e.g., another machine or trailer. You must also fix the machine at the tie bolt during transport. Always secure the bolt of the traction device, which is fixed to a chain, with the spring bolt. GK100855 3-26 WA70-5 – VEAM320100...
Page 90: Socket (12 V)
(2) or the window (3) again, you have to pull back the respective release mechanism. 3.2.8. Alarm horn for reverse driving – option The horn sounds if you have set the driving direction switch to the reverse/backwards position. WA70-5 – VEAM320100 3-27...
Page 91: Fuses
Only replace defective fuses with fuses of the same rat- ing. The fuses protect the electrical system. Replace defective, cor- roded, or loose fuses. When the driver's cab is tipped up, the box can be found in the engine compartment on the right. Fuse assignment 3-28 WA70-5 – VEAM320100...
Page 92: Slow-Blowing Fuses
When the driver's cab is tipped up, the box can be found in the engine compartment on the right. Ω Relay, starter motor Fuse, battery 100 A Ω Relay, air preheater for engine Fuse, air preheater for engine 250 A Ω Relay, battery WA70-5 – VEAM320100 3-29...
Page 93: Adjusting The Heater And Ventilation System
To prevent premature tiredness due to lack of oxygen, it is recom- mended to open the door a little from time to time and to lock it in this position. Optionally, you may leave open the ventilation grid above the side window. 3-30 WA70-5 – VEAM320100...
Page 94: Air-Conditioning
You may open or close the nozzles individually. The exhaust direction can be varied using the diffusing disks. You can direct the air ventilation nozzles onto the front windshield and the air ventilation nozzles (arrows) onto the side windows. WA70-5 – VEAM320100 3-31...
Page 95: Operation
Check whether oil is leaking out of the gear unit, axles, hydraulic tank and hoses, and connecting points. Repair damaged parts. 5. Check brake hoses Check that there is no oil leaking out at the brake hoses. Repair damaged parts. 3-32 WA70-5 – VEAM320100...
Page 96 12. Check ROPS Check whether screws are loose or damaged. Have loose screws tightened and damaged screws replaced by a Komatsu-dealer. Loose screws must only be tightened with the specified tightening torque. Damaged screws must only be replaced by original parts.
Page 97: Pre-Start Checks
3. If the oil level does not reach up to the (L) marking, top up engine oil. For detailed information on recommended oils, see section "5.3. Lubricants, fuels and filling capacities" on page 5-16. 3-34 WA70-5 – VEAM320100...
Page 98 4. Drain the oil. 5. Remove the drain hose (2) from the drain valve. This will cause the drain valve to close. 6. Check oil level again. 7. Fit cap (1) back onto drain valve. WA70-5 – VEAM320100 3-35...
Page 99 2. Then, return the start switch to the stop position '0'. 75_209 3. If required, refuel via the filler (1). For detailed information on fuels, see section "5.3. Lubricants, fuels and filling capacities" on page 5-16. 4. After refuelling, firmly close the filler. 3-36 WA70-5 – VEAM320100...
Page 100 3. Check that the fuel level indicator (5) indicates the fuel level in the fuel tank. NOTE Contact your responsible Komatsu dealer, if one or several of the indicators do not light up. Do not only use the indicators to perform the checks prior to start.
Page 101 Check the measuring instruments. Check both the horn and the reversing warning horn. Check both clearance and operation of the steering wheel. Check the function of the rear-view mirror; check it for dirt and damage. 3-38 WA70-5 – VEAM320100...
Page 102: Adjustments Prior To Machine Start
Release the lever if you have reached the right position. The seat is now locked in its position. Adjusting the angle of inclination of the seat Adjust the front and rear section of the seat with different settings. Proceed as described above. WA70-5 – VEAM320100 3-39...
Page 103 Relieve the backrest in order to bend it to the front. Press it to the back in order to bend it to the back. Release lever (4) if the backrest is in the desired position. The backrest will lock in automatically in this position. 3-40 WA70-5 – VEAM320100...
Page 104 1. Loosen the screw (1). 2. Either pull out or push back the armrest to reach the multifunctional lever. Your forearm should rest on the armrest at an angle of 90° to your upper arm. 3. Re-tighten the screw (1). WA70-5 – VEAM320100 3-41...
Page 105 NOTE The belt cannot be pulled out unless it is completely wound Taking off the safety belt Press the orange button to release the lock of the safety belt and allow the belt to wind up. 3-42 WA70-5 – VEAM320100...
Page 106: Starting The Engine
6. Release the ignition key as soon as the engine started. It automatically returns to the operating position 'I'. 7. Check whether all warning lights have gone out. NOTE For starting up the engine in cold weather, see chapter: "3.5. Cold weather operation" on page 3-80. WA70-5 – VEAM320100 3-43...
Page 107: Warming Up The Engine
4. Let the engine run with lightweight load further until the engine coolant temperature indicator (1) lights up in the green range. 5. Ensure that the exhaust gas colour is normal and that the exhaust pipe produces neither abnormal noises nor vibra- tions. Eliminate possible defects. 3-44 WA70-5 – VEAM320100...
Page 108: Driving With The Machine
5. Release the parking brake. Press the celebration adjustment knob to this at the parking brake lever. Press down the lock- ing button of the parking brake lever. The, release the locking button. The parking brake warning light goes out. WA70-5 – VEAM320100 3-45...
Page 109 5. Set the drive direction switch to the desired direction setting. Position Driving forward Position Neutral Position Reversing 6. Press down the accelerator pedal and release slowly the brake pedal at the same time in order to start the machine. 3-46 WA70-5 – VEAM320100...
Page 110: Changing The Driving Direction
While driving backwards, turn your head into the driving direction. It is not sufficient to rely on the rear view mirrors. WA70-5 – VEAM320100 3-47...
Page 111: Turning And Steering
(approx. 200 to 300 mm). In the event of an emergency, displace the bucket fast on the bottom in order to stabilise the engine. AE060810 3-48 WA70-5 – VEAM320100...
Page 112: Braking
If the service brake breaks down If the machine is not stopped after pressing down the brake pedal, you must use the parking brake. WA70-5 – VEAM320100 3-49...
Page 113 If you use the service brake too often while driving downhill, it may overheat and be damaged. You can avoid this by driving downhill in the lower speed range and by using the braking effect of the engine. 3-50 WA70-5 – VEAM320100...
Page 114: Stopping The Machine
If you have to park the machine on a slope, it is required that you park it in such a way that the front section (work unit) points downhill. Lower the work unit onto the ground. Block the wheels with wheel chocks (1). WA70-5 – VEAM320100 3-51...
Page 115: Operating The Work Equipment
å Hold The boom is held in position. ã H Raise The boom is raised in position. ä Tilt In this position, the bucket is tilted. à A Dump In this position, the bucket is dumped. 3-52 WA70-5 – VEAM320100...
Page 116: Control Lever For Special Equipment
‘1’, ‘2’ or ‘3’. If you do not heed this note, the work hydraulic system will operate in order to counteract overpressure thus unnec- essarily heating up the oil. WA70-5 – VEAM320100 3-53...
Page 117: Switching Lever Of Bucket
Position the control lever for special equipment oper- ates the multi-purpose bucket. Position the control lever for special equipment oper- ates the quick-change unit. 75_160 3-54 WA70-5 – VEAM320100...
Page 118: Working With The Wheel Loader
To disengage the differential lock, release the button (1) on the multifunction lever. The differential lock can be disengaged while you are driving DANGER When you drive in curves on hard ground, the differential lock has to be switched off. WA70-5 – VEAM320100 3-55...
Page 119: Loading Work
5. Press down the accelerator pedal and drive the bucket into the material to be removed. In order to remove the material, it is required that you align horizontally the cutting edge of the bucket while driving into the material. GK100295 3-56 WA70-5 – VEAM320100...
Page 120 8. If there is too much material inside the bucket, you must briefly tip it in, dump it and lower it in order to reduce the load and to prevent that you lose the load during the transport. AD061930 WA70-5 – VEAM320100 3-57...
Page 121: Excavation Work
5. Move the multi-function lever of the boom slightly up and down to reduce the resistance during driving forward. While removing, ensure that the digging force is not applied only on one side of the bucket. AE061960 3-58 WA70-5 – VEAM320100...
Page 122: Planing
The bucket teeth and bucket are damaged if you mine with the bucket in dumping position! For prospecting operations, align the underside of the bucket until it is in parallel to the ground surface. Always drive in the lower speed range while performing prospect- ing operations. WA70-5 – VEAM320100 3-59...
Page 123: Transporting
Then, let the dump truck drive between heap and machine. Drive up to the dump truck and unload the material. This operation requires not much time and reduces considerably the cycle times. AE061990 3-60 WA70-5 – VEAM320100...
Page 124: Working With The Forklift Truck Attachment
In such a way, you prevent that you damage the load while lifting it. Hold the forklift truck attachment as horizontal as possible while piling up. WA70-5 – VEAM320100 3-61...
Page 125 6. Set the load surface slowly and from above onto the stacking. 7. Slowly lower the boom so far that you can pull out the fork tines below the load. 8. Make sure that nobody is behind the machine and drive off backwards from the stacking surface. 3-62 WA70-5 – VEAM320100...
Page 126: Precautions For Special Operations
Adhere to the instructions in the chapter "Working on loose soil" on page 2-15. If the service brake breaks down If the machine is not stopped after pressing down the brake pedal, you must use the parking brake. WA70-5 – VEAM320100 3-63...
Page 127: Precautionary Measures When Driving Up Or Down
(approx. 200 to 300 mm). In the event of an emergency, displace the bucket fast on the bottom in order to stabilise the engine. Braking on slopes Adhere to the instructions in the chapter "Braking on slopes" on page 3-50. AE060810 3-64 WA70-5 – VEAM320100...
Page 128: Precautionary Measures During Machine Travel
The required tyre pressure, the driving speed or the tyre type may vary depending on the condition or structure of the road o be used. Contact the responsible Komatsu trader or the tyre dealer to obtain the required information. The required tyre pressure can be found in the tyres and tyre pressure table in chapter "3.3.16.
Page 129: Adjusting The Position Of The Work Equipment
4. Lift the boom a slightly by setting the multi-function lever into position ‘H’ (fig. G0065021.eps). 5. Tilt the quick-change unit a slightly to the front by setting the multi-function lever into position ‘A’ (fig. G0065021.eps) 3-66 WA70-5 – VEAM320100...
Page 130 9. Check whether the work unit is completely locked by tipping it in and then dumping it. 10. Set the change-over lever for the supplementary control cir- cuit in position ,1' to its limit stop (figure 75_160). 75_160 WA70-5 – VEAM320100 3-67...
Page 131: Removing The Work Unit
3. Set the quick-change unit into the dumping position ‘A’ using the multi-function lever, until the quick-change unit is unhooked of the work unit's pickup hooks. 4. Make sure that nobody is behind the machine and drive the machine away from the work unit. 3-68 WA70-5 – VEAM320100...
Page 132: Picking Up The Multi-Purpose Bucket
‘E’ (fig. G0065021.eps). 8. Lock the quick-change unit by setting the control lever for special equipment into position ‘2’ (fig. G0065018.eps). 9. Switch off the engine. WA70-5 – VEAM320100 3-69...
Page 133 Carefully lift the work unit and check whether it is completely locked in by slowly tipping it in and dumping it. 14. Check whether the work unit is completely locked by tipping it in and then dumping it. 75_275 3-70 WA70-5 – VEAM320100...
Page 134: Removing The Multi-Purpose Bucket
You can recognise the position of the cutting edge of the bucket from the driver’s seat with the help of the level indicators. GK100873 WA70-5 – VEAM320100 3-71...
Page 135: Parking The Machine
(work unit) points downhill. Lower the work unit onto the ground. Block the wheels with wheel chocks (1). 3-72 WA70-5 – VEAM320100...
Page 136: Switching Off The Engine
3. Remove highly flammable material from the engine room since it represents a fire risk. 4. Clean the chassis landing gear roughly. 3.3.15. Locking Lock the following places: Engine hood Cab doors NOTE The ignition key fits all locks. WA70-5 – VEAM320100 3-73...
Page 137: Tyre Handling
As a guideline for visual inspection, the deflection ratio of the front tyre (deflection/free height) is as follows: When carrying normal load (lift arm horizontal): approx. 15 - 25% When digging (rear wheels off ground): approx. 25 - 35% 3-74 WA70-5 – VEAM320100...
Page 138 If the deflection of the tyre is excessive, raise the inflation pres- sure accordingly (see section "Tyre pressure" on page 3-74). WA70-5 – VEAM320100 3-75...
Page 139: Transporting The Machine
1. Set the machine to straight driving. 2. On the left: Loosen the spring bolt and remove the bolt (1). 3. On the right: Insert the bolt (2) and secure by means of the spring bolt. 3-76 WA70-5 – VEAM320100...
Page 140: Lifting The Machine
Carrying ropes with insufficient carrying capacities may tear when the machine is lifted up and cause severe accidents. The operating weight of the machine depends on the attached bucket. WA70-5 – VEAM320100 3-77...
Page 141: Driving The Machine Onto Loading Area Of Transport Vehicle
Position the machine straight in front of the loading ramp and slowly drive up the loading ramp. Do not perform steering movements on the ramp. If required, drive off the ramp, correct the position of the machine on the ground and drive up the ramp again. 3-78 WA70-5 – VEAM320100...
Page 142: Securing The Machine During The Transport
Remove the locking of the articulated steering before you drive the machine off the transport vehicle. For this purpose, reverse the steps 1 through 4 described in the chapter "3.4.1. Securing the articulated steering" on page 3-76. WA70-5 – VEAM320100 3-79...
Page 143: Cold Weather Operation
During the warm-up phase, operate the hydraulics devices several times without load. Add a standard antifreeze to the water in the windshield washer assy. If required, add 25 vol. % of alcohol (spirit) to the water. 3-80 WA70-5 – VEAM320100...
Page 144: Precautions After Completion Of Work
Re-install it the next morning, before starting to work. 3.5.3. After the cold season If the weather becomes warmer, you must fill up the prescribed fuel and use oils with prescribed viscosities (see chapter "5.3. Lubricants, fuels and filling capacities" on page 5-16. WA70-5 – VEAM320100 3-81...
Page 145: Long-Term Storage
Let the engine run once a month. Wipe away the grease from the piston rods of the hydraulic cylinders. Drive the machine over a short route so that the movable parts are coated with a new oil film. Recharge the battery. 3-82 WA70-5 – VEAM320100...
Page 146: After Storage
3.6. Long-term storage 3.6.3. After storage NOTE If the machine was not moved once a month, contact the responsible Komatsu trader to arrange a maintenance appointment. After a longer standstill period, perform the following works before starting up the machine: Remove the grease from the piston rods of the hydraulic cyl- inders.
Page 147 3.6. Long-term storage Operation 3-84 WA70-5 – VEAM320100...
Page 148: Troubleshooting
Troubleshooting 4. Troubleshooting WA70-5 – VEAM320100...
Page 149: Towing The Machine
Before you tow a machine with a hydrostatic drive system, estab- lish a short-circuit connection between the high-pressure side and the low-pressure side of the variable pump. For this purpose, turn the high-pressure valves in the valve block about 2 revolutions. Proceed as follows: WA70-5 – VEAM320100...
Page 150 7. Tip down the driver's cab. Proceed as described in the Safety c ha p te r, u nd e r " " Ti p pi ng do wn th e d r iv e r 's c ab " on page 2-25". GK100958 WA70-5 – VEAM320100...
Page 151 In addition, secure the articulated steering with the locking bar, in the same way as it is required for transport of the machine on a low bed loader or by train. WA70-5 – VEAM320100...
Page 152 Please ask your responsible Komatsu dealer for details, if you want to give a particular machine a tow. WA70-5 – VEAM320100...
Page 153: Starting The Engine With A Booster Cable
The battery of the normal machine must have the same capacity as that of the engine to be started. Check the cables and clips for damage or corrosion. Make sure that the cables and clips are firmly connected. WA70-5 – VEAM320100...
Page 154 3. Remove one clip of booster cable (A) from the positive (+) Engine block of the terminal of the normal machine. problem machine GK100876 4. Remove the other clip of booster cable (A) from the positive (+) terminal of the defective machine. WA70-5 – VEAM320100...
Page 155: For Insufficient Braking Effect
5 m. NOTE All repairs conducted on the braking system must be con- ducted at a Komatsu workshop. 4.3.2. Checking the parking brake function 1. Start the engine, set the machine to straight driving, and drive the machine with an empty bucket up a gradient of 25%.
Page 156: Emergency Steering Properties
Position working hydraulics locked Position working hydraulics released 1. Make sure that no one is standing underneath the working attachment. 2. Move the multifunction lever slowly into position 'S'. The working attachment is lowered. WA70-5 – VEAM320100...
Page 157: Other Troubles
Re-charge battery Starter turns engine only slowly Starter defective *) Replace starter Battery charge insufficient Re-charge battery Starter disengages before engine is started Starter defective *) Replace starter *) Have this work performed by local dealer. 4-10 WA70-5 – VEAM320100...
Page 158: Engine
(make sure mixture ratio is correct) Check lines and hoses (visual check: coolant leaks) Coolant level too low Leak in cooling system *) Replace defective lines and hoses *) Have this work performed by local dealer. WA70-5 – VEAM320100 4-11...
Page 159 Exhaust fumes colour temporarily Injection nozzle defective *) Replace injection nozzles black Engine compression too low *) Check tappet clearance Temporarily, combustion sounds Injection nozzles defective Replace injection nozzles*) like breathing *) Have this work performed by local dealer. 4-12 WA70-5 – VEAM320100...
Page 160 Warning light air filter: Clean or replace filter insert of air warning light air filter is on when Air filter of filter insert dirty filter engine is running *) Have this work performed by local dealer. WA70-5 – VEAM320100 4-13...
Page 161: Hydraulic System
*) Replace defective inch valve Replace filter element of hydraulic Hydraulic filter dirty filter *) Check function of switching Switching relay without function relay; repair or replace defective switching relay *) Have this work performed by local dealer. 4-14 WA70-5 – VEAM320100...
Page 162 Air bubbles in hydraulic oil Oil level in hydraulic oil tank too Top up hydraulic oil Oil level in hydraulic oil tank too Cylinders move jerky Top up hydraulic oil *) Have this work performed by local dealer. WA70-5 – VEAM320100 4-15...
Page 163: Brakes
*) Check fastenings of steering Clearance of steering cylinder bolt cylinder; replace defective cylinder too large bolt. Steering wobbles Faulty operation of hydraulic *) Check function of hydraulic system system *) Have this work performed by local dealer. 4-16 WA70-5 – VEAM320100...
Page 164: Axles
If faults or causes of faults are not listed below, have them rectified by local dealer. DRIVER'S CAB Fault Fault cause Remedy Blower: insufficient air flow Blower filter clogged Clean or replace filter *) Have this work performed by local dealer. WA70-5 – VEAM320100 4-17...
Page 165 4.6. Other troubles Troubleshooting 4-18 WA70-5 – VEAM320100...
Page 166: Maintenance
Maintenance 5. Maintenance WA70-5 – VEAM320100...
Page 167: Maintenance Guide
Switch the working hydraulics safety lever to position ‘1’. Position working hydraulics locked Position working hydraulics released Apply service brake Lock the centre pivot steering when performing maintenance work by using the centre pivot steering locking lever. Place chocks before and behind the wheels. WA70-5 – VEAM320100...
Page 168 (arrow). 2 screws on the left and 2 screws on the right (1). 6. Take the hand pump lever out of its holder on the radiator (2) and insert it into the receptacle of the pump (3). WA70-5 – VEAM320100...
Page 169 9. Set the lever at the pump to "pump down" and pump the cab downward until the safety rod is secure against the right side of the cab floor. 10. Take the lever out of the pump. WA70-5 – VEAM320100...
Page 170 (the resistance at the lever increases markedly). NOTE Make sure that the guide pin (arrow) on the left of the rear frame is inserted into the guide bushing of the cab. WA70-5 – VEAM320100...
Page 171 Check the service meter every day to see if any maintenance is due. Komatsu original replacement parts Only use Komatsu original parts specified in the Parts Book as replacement parts. Oils and grease Use only original oils and grease by Komatsu. Choose oils and grease with the specified viscosity depending on the ambient temperature.
Page 172 Disconnect the negative terminal on the battery. Do not apply more than 200V continuously. Connect grounding cable within 1 m from the area to be welded. No seals or bearings may be between the area to be welded and the grounding point. WA70-5 – VEAM320100...
Page 173 Lubricate components more frequently than usual. Be sure to lubricate work equipment pins daily if they are submerged in water. On worksites where heavy-duty operations are common, reduce the maintenance and lubricating intervals. WA70-5 – VEAM320100...
Page 174 Avoid mixing oils Never mix oils of different brands. If you have only oil which is dif- ferent from the oil brand used in the machine, do not add it but replace the entire oil. WA70-5 – VEAM320100...
Page 175: Maintenance Basics
When changing the oil, always replace the related filters at the same time. We recommend to have an analysis of the oil made periodically to check the condition of the machine. Those who wish to use this service, are requested to their Komatsu distributor. 5-10 WA70-5 – VEAM320100...
Page 176: Fuel
5-50. If the fuel sulphur content is between 0.5 and 1.0%, the oil change interval must be 1/2 normal. If the fuel sulphur content is more 1.0%, the oil change inter- val must be 1/4 normal. WA70-5 – VEAM320100 5-11...
Page 177: Coolant
Do not use water that is not suitable for drinking. When using anti-freeze, always observe the precautions given in the Operation and Maintenance Manual. Komatsu machines are supplied with Komatsu original anti- freeze in the coolant when the machine is shipped. This anti-freeze prevents corrosion in the cooling system.
Page 178: Storing Oil And Fuel
Biodegradable hydraulic oil and lubricants The use of biodegradable hydraulic oils and lubricants - on the basis of synthetic esters - for Komatsu machines is permitted. For information on the products cleared for use and best suited for your application contact our authorized service workshops.
Page 179: Specifications Of The Electrical System
When working on the seashore, carefully clean the electrical system to prevent corrosion. The optional power source must never be connected to the fuse, start switch, or battery relay. 5-14 WA70-5 – VEAM320100...
Page 180: Wearing Parts List
The wearing parts should be changed correctly in order to use the machine economically. For replacement, KOMATSU genuine parts of excellent quality should be used. *: See Part No. in Parts Book (KOMATSU).
Page 181: Lubricants, Fuels And Filling Capacities
**) BI codes are the "standard lubricants" for construction machinery and vehicles of the Hauptverband der Deutschen Bauindustrie e.V. (BI). The brochure "Regelschmierstoffe für Baumaschinen- und Fahrzeuge" (Standard Lubricants for Construction Machinery and Vehicles" can be obtained from bookstores or Bauverlag GmbH, Wiesbaden and Berlin, under the ISBN no. 3-7625-3102-1." 5-16 WA70-5 – VEAM320100...
Page 182: Tools And Standard Tightening Torques (Bolts, Nuts)
Grease gun 424-98-H1010 – Hose 424-98-H1020 (for grease gun) Grease cartridge 07950-90403 (Lithium base grease: 400g) Hammer 421-98-H1140 – Pocket 421-98-H1130 – If any of the above tools are broken, please order them from your KOMATSU distributor. WA70-5 – VEAM320100 5-17...
Page 183: Torque List
The tightening torque is determined by the width across flats of the nut and bolt. If it is necessary to replace any nut or bolt, always use a Komatsu genuine part of the same size as the part that was replaced..
Page 184 57,3 M27 × 2 1500,0 150,0 832,0 83,2 M30 × 2 2120,0 212,0 1158,0 115,8 M33 × 2 2800,0 280,0 – – M36 × 3 3500,0 350,0 – – M39 × 3 4600,0 460,0 – – WA70-5 – VEAM320100 5-19...
Page 185: Periodical Replacement Of Safety-Critical Parts
(the shelf life of the hose should not exceed 2 years). When replacing the hoses, always replace the O-rings, gaskets, and other such parts at the same time. Ask your Komatsu distributor to replace the safety critical parts. 5-20 WA70-5 – VEAM320100...
Page 186: Maintenance Schedule Chart
5-41 V-Belt, generator – checking and adjusting the tension 5-41 Air filter, removing and re-installing the filter insert, checking and cleaning the filter insert 5-42 Lubrication, steering cylinder 5-45 Lubrication, self-aligning bearings of rear axle 5-46 WA70-5 – VEAM320100 5-21...
Page 187 Ventilating the hydraulic oil tank 5-65 Checking the fuel pump 5-66 Checking the fuel and coolant tubes, replacing the tubes (if required) 5-66 Checking the water pump 5-66 5.7.12 Maintenance every 4000 operating hours 5-67 Lubrication, drive shaft 5-67 5-22 WA70-5 – VEAM320100...
Page 188: Service Procedure
1000 operating hours" on page 5-56). 7. If the expansion tank is empty again after a short period of time, immediately have the cooling system checked for leaks and have any leaks repaired in the garage. WA70-5 – VEAM320100 5-23...
Page 189: Cleaning The Radiator Segments
4. Wait three minutes before you check the oil level again. If the oil level is above the (H) marking, drain off some oil (see "Engine, draining off oil" on page 5-25). 5. Close the oil filler (2). 5-24 WA70-5 – VEAM320100...
Page 190 4. Drain the oil. 5. Detach drain hose (2) from drain valve. This causes the drain valve to close. 6. Check oil level again. 7. Fit cap back onto drain valve (1). WA70-5 – VEAM320100 5-25...
Page 191: Checking The Fuel Level - Refuelling
Then, return the start switch to the stop position '0'. 75_209 2. If required, refuel via the filler (1). For detailed information on fuels, see section "5.3. Lubricants, fuels and filling capacities" on page 5-16. 3. After refuelling, firmly close the filler. 5-26 WA70-5 – VEAM320100...
Page 192: Water Separator At The Fuel Filter - Draining Water And Dirt Sediments
3. The oil level has to be up to the lower edge of the filling hole (arrow). 4. If required, add oil (cross-reference to the list of consum- ables). 5. Replace the screw plug into the filling hole (1) and pull it hand-tight. WA70-5 – VEAM320100 5-27...
Page 193: Checking The Controls
3. Check that the fuel level indicator (5) indicates the fuel level in the fuel tank. NOTE Contact your responsible Komatsu dealer, if one or several of the indicators do not light up. Do not only use the indicators to perform the checks prior to start.
Page 194: Heater/Air Conditioning - Checking Rate Of Air Flow
Check the measuring instruments. Check both the horn and the reversing warning horn. Check both clearance and operation of the steering wheel. Check the function of the rear-view mirror; check it for dirt and damage. WA70-5 – VEAM320100 5-29...
Page 195: Maintenance Upon Demand
At the same time, inspect the flow of coolant (R134a) through the sight glass to check the gas level. Contact your Komatsu dealer for this inspection. Receiver The sight glass is installed next to the receiver at the side of the condenser.
Page 196: Checking The Window Washing-Fluid Level, Adding Fluid
Check the washing-fluid level in washer tank. When the fluid has run short, add window washing fluid for cars. To prevent the nozzles from clogging, be careful not to let dust get into the fluid WA70-5 – VEAM320100 5-31...
Page 197: Re-Charging A Built-In Battery
Damage of the electrode plates. Do not mix up the cables (positive (+) and negative (-) Before performing maintenance operations, remove all cables from the battery poles. Only exceptions: acid level check or the measurement of the specific density. 5-32 WA70-5 – VEAM320100...
Page 198: Maintenance After The First 50 Operating Hours
14. Bring the boom into its highest position. 15. Bring bucket into its tip-in position (up to its limit stop). 16. Re-tighten the venting filter. 17. Perform a test run and check that the system is tight. GK100913 WA70-5 – VEAM320100 5-33...
Page 199: Checking And Tightening The Wheel Nuts
Loose wheel nuts may cause severe accidents! Regularly check and tighten the wheel nuts. Tightening of loose nuts (1). Nut torque: 450 - 500 Nm NOTE If a threaded bolts breaks, replace all threaded bolts of the respective wheel. GK100915 5-34 WA70-5 – VEAM320100...
Page 200: Maintenance After The First 250 Operating Hours
6. Clean drain plug and attach clean, undamaged (or new) washer. 7. Screw drain plug in tight. 8. Change oil in other wheels of the front and rear axle following the same procedure as described under no. 1 - 7 above. WA70-5 – VEAM320100 5-35...
Page 201: Transfer Box - Changing Oil
6. Fill in oil via the check drill hole (1), until the oil reaches up to the bottom edge of the check drill hole. 7. Tightly screw in the screw plug (1) Checking and adjusting the valve clearance Have the valve clearance checked and adjusted at an authorised Komatsu garage. 5-36 WA70-5 – VEAM320100...
Page 202: Maintenance Every 10 Operating Hours
3. Use a grease gun to fill the grease nipples with a sufficient volume of lubricating grease. 4. Remove the used lubricating grease that is pressed out of the bearings. NOTE Perform lubrication more frequently, when working in a con- tinually wet or salty environment. WA70-5 – VEAM320100 5-37...
Page 203: Maintenance After The First 50 Operating Hours
2. Check the brake fluid level at the expansion tank. The oil level must be 10-20 mm below the upper edge of the expansion tank (marking). 3. If you detect a significant oil loss, inform the responsible Komatsu dealer. 5-38 WA70-5 – VEAM320100...
Page 204: Battery - Checking The Acid Level
20°C 5°C -10°C -25°C Charge Specific Density (kg/l) full 1,28 1,29 1,30 1,31 half 1,20 1,21 1,22 1,23 empty 1,12 1,13 1,14 1,15 6. Recharge insufficiently charged batteries. 7. Lock the cells with the cleaned plugs. WA70-5 – VEAM320100 5-39...
Page 205: Lubrication Of Work Unit
(2 locations) (6) Clamshell bucket (6 locations) 4. Remove the old grease which is extruding at the bearings. NOTE If you operate in humid conditions or in a salty environment, you must reduce the lubricating intervals. 75_263 5-40 WA70-5 – VEAM320100...
Page 206: Maintenance Every 250 Operating Hours
5. Loosen the fastening screw (3) at the guide rail. 6. Tilt the generator to adjust the tension of the V-belt. 7. Fasten the generator and the guide rail. 75_220 8. Check the tension of the V-belt and re-adjust it, if required. WA70-5 – VEAM320100 5-41...
Page 207: Air Filter, Removing And Re-Installing The Filter Insert, Checking And Cleaning The Filter Insert
2. Open the twistlocks on the cover of the air filter housing (2). 3. Remove the cover of air filter housing. 4. Pull out the filter cartridge (3). 5. Clean thoroughly the interior of the filter housing with a cloth. 5-42 WA70-5 – VEAM320100...
Page 208 For this purpose, swing the cartridge back and forth in the solution. Then, rinse the filter cartridge with clean water starting with the inside and then proceeding to the outside (max. 3 bars) and let it dry at a temperature of max. 50°C. WA70-5 – VEAM320100 5-43...
Page 209 If the control lamp lights up again after a short time, you must replace both, the air filter cartridge and the safety filter (refer to chapter "Air filter, removing and re-installing the fil- ter insert, checking and cleaning the filter insert" on page 5-42). 5-44 WA70-5 – VEAM320100...
Page 210: Lubrication, Steering Cylinder
3. Use a grease gun to press sufficient grease into the grease nipples. 4. Remove the old grease which is extruding at the bearings. (1) Front steering cylinder (1 location) (2) Rear steering cylinder (1 location) WA70-5 – VEAM320100 5-45...
Page 211: Lubrication, Self-Aligning Bearings Of Rear Axle
2. Clean the grease nipples which are indicated by the arrows. 3. Use a grease gun to press sufficient grease into the grease nipples. 4. Remove the old grease which is extruding at the bearings. Self-aligning bearings of rear axle (1) (2) 5-46 WA70-5 – VEAM320100...
Page 212: Maintenance Every 500 Operating Hours
6. Check the removed oil for metal parts or undesired material. If the oil contains such particles, inform the responsible Komatsu dealer. Detach drain hose (2) from drain valve. This causes the drain valve to close. 7. Fit cap back onto drain valve (1). WA70-5 – VEAM320100 5-47...
Page 213: Replacing The Oil Filter Cartridge
8. Wait about ten minutes, then check the oil level again. The oil level must be between the 'H' and 'L' markings on the oil dip- stick. For further details see section "Engine, checking the oil level, topping up oil" on page 5-24. 5-48 WA70-5 – VEAM320100...
Page 214: Changing The Fuel Filter Element
Subsequently tighten the filter car- tridge (observe the instructions of the filter manufacturer). 11. Reconnect the connector (2) of the sensor (3). 12. Subsequently vent the fuel system. 13. Start the engine and check for leaks. G0065153 WA70-5 – VEAM320100 5-49...
Page 215: Bleeding The Fuel System
1. Crank the engine (max. 30 seconds) and vent the lines con- secutively, until the engine is running smoothly. NOTE If the fuel system has run empty during driving, or if repairs or maintenance operations are to be performed, it is neces- sary to bleed the system. 5-50 WA70-5 – VEAM320100...
Page 216: Air Filter, Replacing The Filter Insert, Replacing The Safety Filter
If it is in perfect condition, press it firmly into place. 6. Re-install the air-filter insert as described in chapter"Air filter, removing and re-installing the filter insert, checking and cleaning the filter insert" on page 5-42. WA70-5 – VEAM320100 5-51...
Page 217: Heater/Air Conditioning - Cleaning/Replacing Filter Fleece
Caution: The right and left circulating air jets (arrow) must be open. 7. If the air flow is still too weak the filter fleece must be replaced. 8. Screw front cover (1) back on. 5-52 WA70-5 – VEAM320100...
Page 218: E.c.s.s.-Pressure Accumulator (Option) - Checking Gas Pressure
If the water pressure is too high, the fins may get deformed. When washing with a high pressure washing device, apply the water from a reasonable distance. E.C.S.S.-pressure accumulator (Option) - checking gas pressure Ask your Komatsu dealer to check the accumulator gas pressure. (Gas pressure: 20 bar) WA70-5 – VEAM320100 5-53...
Page 219: Front And Rear Axle - Checking The Oil Level
Check the oil level as described under points 3 through 5 in section "Planet gear". 2. Unscrew the locking screw (3) of the drill hole at the rear axle. Check the oil level as described under points 3 through 5 in section "Planet gear". 5-54 WA70-5 – VEAM320100...
Page 220: Transfer Box - Checking And Refilling Oil
5. If the oil level is too low, fill up with oil using the control drill hole of the screw (1). 6. Clean the screw plug and insert a new packing ring. 7. Re-tighten firmly the screw plug. WA70-5 – VEAM320100 5-55...
Page 221: Maintenance Every 1000 Operating Hours
8. Check the tension of the V-belt and re-adjust it, if required. 75_220 Service Brake - Checking and refilling oil Alll repairs on the brake system must be performed by a garage which is authorised by Komatsu. Changing oil Checking tubes and lines Checking the brake disks for wear and tear...
Page 222: Hydraulic - Exchanging The Venting Filter
5. Unscrew the old filter (1) and O-ring. 6. Screw in a new filter (1) with O-ring and hand-tighten it. 7. Do a trial run to check that the system is free of leakage. 8. Screw the cover back onto the hydraulic tank. WA70-5 – VEAM320100 5-57...
Page 223: Hydraulic System, Replacing The Filter Insert
14. Bring the boom into its highest position. 15. Bring bucket into its tip-in position (up to its limit stop). 16. Re-tighten the venting filter screw. 17. Perform a test run and check that the system is tight. GK100913 5-58 WA70-5 – VEAM320100...
Page 224: Maintenance Every 1500 Operating Hours
6. Clean drain plug and attach clean, undamaged (or new) washer. 7. Screw drain plug in tight. 8. Change oil in other wheels of the front and rear axle following the same procedure as described under no. 1 - 7 above. WA70-5 – VEAM320100 5-59...
Page 225: Transfer Box - Changing Oil
5. Tightly screw in the screw plug (2). 6. Fill in oil via the check drill hole (1), until the oil reaches up to the bottom edge of the check drill hole. 7. Tightly screw in the screw plug (1) 5-60 WA70-5 – VEAM320100...
Page 226: Maintenance Every 2000 Operating Hours
In this case, use a mixture of potable water and distilled or deionized water. In areas where the water is hard, always add KOMATSU genuine corrosion resistor agent KI. One packet of corrosion resistor (No. 600-411-1120) agent contains 100g (0.22 lb). The standard den- sity of the mixture should be 7g/liter (0.065 oz/US gal).
Page 227 80° C. 5. Then, let the cooling system run empty again. If the extruding water is not clean, the cooling system must be re-flushed until the extruding water is clean. 6. Close the drain valve. 5-62 WA70-5 – VEAM320100...
Page 228: Checking And Adjusting The Valve Clearance
6. Fill up coolant into the expansion tank, until the coolant level is between the MAX and MIN markings. Checking and adjusting the valve clearance Have the valve clearance checked and adjusted at an authorised Komatsu garage. WA70-5 – VEAM320100 5-63...
Page 229: Hydraulic System - Changing Oil
2. Lower the work unit onto the ground. 3. Switch off the engine. 4. Secure on the right side the articulated steering with the lock- ing bolt. 5. Unlock the venting filter screw (1) by turning it slowly to let the pressure escape. 5-64 WA70-5 – VEAM320100...
Page 230: Ventilating The Hydraulic Oil Tank
1. Loosen the venting filter screw by turning it a couple of rota- tions. 2. Start up the engine. 3. Bring the boom into its highest position. 4. Bring bucket into its tip-in position (up to its limit stop). 5. Re-tighten the venting filter screw. WA70-5 – VEAM320100 5-65...
Page 231: Checking The Fuel Pump
Checking the fuel and coolant tubes, replacing the tubes (if required) Have the fuel and coolant tubes checked and replaced, if required, at an authorised Komatsu garage. Checking the water pump Let the water pump be checked at a garage which is authorised...
Page 232: Maintenance Every 4000 Operating Hours
NOTE Only "Staburags NBU 12/300 KP" special grease may be used for maintenance. Using different grease will reduce the life span of the drive shaft. Pos. Name Order number Grease nipple 42Y-00-H3040 Grease 42S-09-H1030 WA70-5 – VEAM320100 5-67...
Page 233 Service procedure Maintenance 5-68 WA70-5 – VEAM320100...
Page 234: Technical Data
Technical data 6. Technical data WA70-5 – VEAM320100...
Page 235 1st drive range 0 - 5.0 km/h forward and backwards 2nd drive range 0 - 20 km/h Tractive force, max. 35,2 kN Over bucket 4.175 mm Turning radius Over tires 3.680 mm Bucket, Standard 42U-70-22010 (0,85 m WA70-5 – VEAM320100...
Page 236: Noise Emission Levels
35° uphill, downhill or sideways. If you angle the machine at more than 35° during operation, the motor, transmission, hydraulic sys- tem or axles, will not be supplied with sufficient oil and can be damaged. A uphill 30° B downhill 30° C sideways 30° 75_046 WA70-5 – VEAM320100...
Page 237 6.4. Limit values for slopes Technical data WA70-5 – VEAM320100...
Page 238: Special Equipment And Attachments
Special equipment and attachments 7. Special equipment and attachments WA70-5 – VEAM320100...
Page 239: E.c.s.s-Electronics
E.C.S.S-electronics switch OFF before beginning to service. NOTE The E.C.S.S. system is activated when the transmission is shifted in 2nd gear and the machine is traveling at a speed higher than 5 km/h. WA70-5 – VEAM320100...
Page 240: Operating The E.c.s.s-Electronics
Do not support the boom when on the road. Switching OFF the E.C.S.S-electronics 1. Press the E.C.S.S-electronics switch. The control lamp in the switch goes out. WA70-5 – VEAM320100...
Page 241: Precautions When Handling The Accumulator
Danger of injury! Pressure accumulator is filled with highly pressurised nitrogen. Do not open or damage the pressure accumulator. Immediately inform your Komatsu dealer, if you detect mal- functions or defects of pressure accumulators. Filling the pressure accumulator with gas or topping up gas in the pressure accumulator is strictly limited to persons authorised to handle highly pressurised gas.
Page 242: Index
Index 8. Index WA70-5 – VEAM320100...
Page 243 Hazard warning lights ....3-9 Machinery Directive ..... . 1-3 WA70-5 – VEAM320100...
Page 244 Checking ......5-23 Komatsu distributor, address ....1-11 Topping up .
Page 245 Maintenance every 500 operating hours ..5-47 Operator’s seat serial no. plate ....1-11 Air filter, replacing the safety filter ..5-51 WA70-5 – VEAM320100...
Page 246 Information ......1-5 Changing oil ..... . 5-36, 5-60 WA70-5 – VEAM320100...
Page 247 Unloading ......3-60 Workplace, Safety at the ....2-13, 2-15 WA70-5 – VEAM320100...
Page 248: Notes
Notes 9. Notes WA70-5 – VEAM320100...
Page 249 Notes WA70-5 – VEAM320100...
Page 250 Notes WA70-5 – VEAM320100...
Page 251 Notes WA70-5 – VEAM320100...
Page 252 Notes WA70-5 – VEAM320100...
Page 253 Notes WA70-5 – VEAM320100...

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