CG958G Wheel Loader. Manual - part 11

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obstacles.  

 Use protective device when necessary.   

 The top of engine cover is slippery and hazard and people are not allowed to stand on it.   

 Th top of tyre is slippery and hazard. Do not stand on it.   

 When cleaning the front windows of the cab, stand on fender of the front frame.   

8.5 Maintaing When Engine Is Running

 

Do not maintain when engine is running to avoid injuries. When it is unavoidable to 

maintain with engine running, comply with the following instructions. 

 Appoint one worker to sit on the operator’s seat to prepare to turn off the engine at any 

moment. All workers must keep contact with others.   

 Do not touch tail pipe, muffler and other high temperature parts to avoid burnings.   

 When the work position is close to rotating parts, there is a danger of being rolled in by the 

rotating parts. Special care must be taken.   

 Do not touch any control lever. When it is unavoidable to manipulate control levers, give 

out signals to other workers, warning them to walk to safe places.   

 Never let any tool or any part of body contact with the fan blades or fan belt. Severe 

injuries may be caused or else.   

8.6 Do not Drop Foreign Matters into the Machine 

 When opening the exam windows or oil filler to exam and repair, take care not to drop any 

foreign matter (such as nuts, bolts, cotton yarn or tools) into the machine. If these articles 

fall into the machine, must take them out of the machine.   

 When repairing, do not carry any unnecessary tools or parts in the pockets.     

8.7 Cleaning 

 Clean the machine in time. This will avoid the dirts or silt on the machine to splash into 

eyes. The oil on the machine may cause slip and injuries.   

 When cleaning the machine, use incombustible cleaning agent.   

 When cleaning inside the machine, turn off engine and place all control levers at middle 

position. Pull up the parking brake switch and place it at brake position.   

 Wear anti-skid shoes to avoid slipping on wet surface when cleaning the machine. When 

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washing machine with pressured water, wear protective clothes.   

 Do not jet water directly on electrical units (such as sensors and plugs and sockets of wire). 

If water enters into electrical system, operation failure may be inflicted.   

 When cleaning filter elements with compresseed air, must wear protective clothes and 

goggles.  

8.8 Welding Repair 

    Welding operation shall be conducted by competent welders and at places with proper 

equipments. Electric welding will generate gas, which may cause fire or electric shock in 

operation. The following instructions must be observed when welding: 

 Disconnect the terminals of storage battery to prevent explosion of storage battery.   

 Remove paints at places where are to be welded to prevent generation of toxic gas.   

 If welding on hydraulic equipment or tubes, or at places very close to them, combustible 

steam and sparkle will be generated, which have a danger of cating fire or exploding. Avoid 

welding in such places.   

 If the splashed sparkles of welding directly fall on rubber hoses, wires or pressured tubes, 

these pipelines may crack suddenly and the insulation husk of wires may be damaged. Use 

fire curtain to block the sparkles.   

 When welding in places close to tyres, because tyre may explode, special care shall be 

taken.  

 Wear protective clothes when welding.   

 Keep the welding site well-ventilated.   

 Clean up all combustible materials. Must prepare fire extinguisher at opertation sits.   

8.9 Repair of Cooling System 

 When just completing operation, the temperature of hydraulic oil, oil and water in the 

engine and radiator is very high and is pressured. At this instance, any attempt to open the 

oil tank cap, radiator cap, fill oil or water, or replace filter may cause severe burnings.   

 In order to prevent hot water from jetting out, turn off engine and allow the water cool 

down, screw off the caps slowly to release pressure. When checking whether the water 

temperature has dropped, put hand in front of the water radiator to feel the air temperature. 

Take care not to contact the radiator.   

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 In order to avoid burnings, do not touch engine or muffler, tail pipe, relay when the 

machine is hot.   

 In order to avoid burnings, do not disassemble engine oil temperature sensor, water 

temperature sensor, torque conventer sensor or air conditioner water pipe when the machine 

is hot. The cooling system contains alkline material; avoid contacting with skin or eyes.   

 When replacing coolant, engine oil, transmission case oil, filter and other parts, select 

appropriate containers.   

 Store of liquid and treatment of waste fluid shall comply with local environment protection 

laws and regulations.   

 When disassembling linking pipelines of air conditioner compressor, forbid approach of 

open flame, or else toxic gas will be generated and poisoning will be inflicted.   

8.10 Repair of Hydraulic System

 

 Before repairing hydraulic system, lock oil cylinder and other hydraulic devices, cool down 

hydraulic oil, release all system pressure of hydraulic system.   

 Do not bend or hammer pressured pipelines. Do not install bended or damaged tubes or 

hoses on the machine.   

 Repair in time any loose or damaged tubes or hoses of fuel or lubricant pipelines, or of 

hydraulic system.   

 Leakage may cause fire, please repair or make replacement in time.   

 Pleace check all pipelines (tubes and hoses) carefully and fasten all joints with specified 

torque. Do not check for leakage with bare hands; use boards or cardborads. Even the 

leakage of pressured fluid as minor as a needle eye may penetrate muscles and cause 

injuries. If solution is jetted to skin, it shall be treated within a couple of hours by surgeons 

who are familiar with this kind of injury. 

Note: when the following troubles are discovered, make replacement.   

1.  Damage or leakage of joints. 

2.  Wear-out of or cut on out layer and bareness of reinforcing wire. 

3.  Local bump of outer layer. 

4.  Obvious twist or flatness of hoses. 

5.  Wire in reinforcing layer is embedded into outer layer. 

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6.  Displacement of end joints. 

Turning and work hydraulic systems use vane 

pumps.  

Instructions for use of vane pump:                                                       

 Starting of vane pump: All control parts shall be 

placed at middle position to enable the pump start 

without load. Start engine and run it at idle speed. 

For its lower temperature, winter is the season when more troubles of vane pump occur.   

 Filter all hydraulic oil at least every 2-3 months to maintain clean of the oil. Replace new 

hydraulic oil for the old (after having been used for a long time, the hydraulic oil will 

deteriorate, which is perceivable by observing the color of oil) when necessary to safeguard 

life of hydraulic parts. 

 When starting, while making sure of a good condition of oil suction, it would be better to 

run it without load for a period of time of over 10 minutes. Run with load after the oil 

temperature has risen, which would avoid damages to pump core inflicted by bad suction of 

oil due to thickness of oil.     

Periodical maintenance of hydraulic steering system: 

1.  Check all fastening positions and replace working oil after the initial driving of 50 hours; 

2.  Check oil quantity in oil tank and check all fastening positions after driving for every 10 

hours; 

3.  Replenish grease at the front and rear supports of steering oil cylinder; 

4.  Check system pressure (system pressure: 15.5MPa) after driving for every 500 hours; 

5.  Replace working oil after driving for every 500 hours. 

 

Accumulator 

 Do not weld or make any mechanical machining on the shell of 

accumulator. When completing connection of hydraulic pipes, 

the pressure inside pipes must be completely released by bleed 

screw on the accumulator. Works on accumulator such as repair 

and pressured connection are only allowed when the oil pressure