CG958G Wheel Loader. Manual - part 36

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Clean and replace the filter. 

Caution 

Before the installation of filter, do not refuel. Impure fuel oil will cause the 

accelerated wear of the fuel oil system. 

 

Clean the coarse filter element. 

Carry on working according to the service manual of diesel engine and the 

following steps are for reference only. 

1． Open the maintenance door by the side of the machine. 

2． Loosen the holding bolt on the shell of the filter. 

3． Discard the shell and filter. 

4． Disassemble the filter element from the lag. 

5． Clean the filter element and shell in clean, non-flammable solvent. 

6． Dry the filter element by compressed air. 

7． Clean the shell base of the filter. 

8． Check the seal ring and replace it if it is damaged. 

9． Install clean filter element. 

10． Encase the filtering element and lag. 

11． Re-tighten the bolts. 

 

Replace the thin fuel oil filter 

Carry on working according to the service manual of diesel engine and the 

following steps are for reference only. 

1． Disassemble the filter and discard it as useless. 

2． Clean the filter fixing base, and make sure that all the old seal rings have removed. 

3． Smear clean diesel on the new filter seal ring. 

4． Install new filter by hand and twist another three-quarters circle when the seal 

touch the base. 

5． Start the diesel engine system (see below). 

Start the fuel system. 

If the engine fails to start or run smoothly after refueling the filter and oil pump 

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body, the injection pump and pressure duct shall be started with refueling. 

Each injection pump has an overflow one-way valve, which can not be opened by 

manual pump pressure. Refuel the injection pump and pipeline according to the 

following steps. 

 If loosen or tighten fuel line nut by only a wrench, the fuel injector may be 

irremediable defect by distortion. So clamp the injector by a wrench and 

loosen the nut by another wrench. 

1． Loosen spray bar at the engine junk head. 

2． Set the acceleration control leer to low speed idle position. 

3． Start the engine and stop it till the diesel flow out from all pipelines and no air 

bubbles. 

4． Tighten the nut of fuel oil pipe with a torsional moment of 40±7N.m, and chuck 

the injector with another wrench to prevent damage. 

5． Start the diesel and check its leakage. 

6． Close the maintenance door. 

Start pump 

Filter and pump body 

1． Open the engine fuel system vent valve. 

2． Loosen the priming pump plunger and press it up and down. 

3． Close the pump and lock plunger when there is no bubble as the fuel oil flows out. 

4． Close the vent valve. 

5． Start the diesel and check its leakage. 

Fuel tank lock and fuel strainer 

Oil filling cap of the fuel tank locates in the back of the machine. 

1． Disassemble the lid. 

2． Replace the lid if the gasket is broken. 

3． Take out primary strainer from the oil filling port. 

4． Clean the primary strainer with clean, non-flammable solvent. 

5． Fit on the primary strainer. 

6． Fit on the oil filling cap of the fuel tank 

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Additional Maintenance Contents for the First 600 Hours after the 

Usage of New Loader Are Given Below 

Differential gear and final transmission 

Replace oil. 

See oil replacement in “Front axle and rear axle’ in the maintenance of 50 hours 

running-in of new loader”. 

Working device and hydraulic steering system 

Replace oil. 

See the steps in “‘Working device and hydraulic steering system’ in the maintenance 

of the running-in 50 hours of new loader”. 

9.8 Maintenance of Each 1000 Working Hours or Every Half An Year 

Before carrying out any operation or maintenance, the warnings and annotations in this 

manual’s safety chapter shall be read and understood. 

 Firstly carry on the aforementioned examination items 

 Firstly, carry on the aforementioned items. 

Gearbox oil 

Replace the gearbox oil. 

Start the engine to hear the oil and the machine shall be set at a level position. 

Set down the bucket and exert downward pressure on it slightly. 

Close the parking brake and shutdown the engine. 

1.  Disassemble the oil drain plug at the bottom shell of the gearbox to 

discharge the oil, clean and fit on the oil plug. 

2. Disassemble the oil drain plug which locates below the 

torque-converter’s oil radiator at the backmost of the machine and 

discharge the oil. Clean and fit on the oil plug. 

3. Replace filter. 

4.  Fill up oil with special volume into the torque-converter and fill to the 

high position of the oil gauge when the machine is offstate. 

5.  Start engine and pedal the service brake. 

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6.  Under the idle speed, slowly manipulate the joystick of the gearbox, and 

recycle the oil so that oil torque-converter and pipeline may be full of oil. 

Check the oil level of the torque-converter which shall between the low 

and high level of the oil gauge. 

7.  Set the joystick of gearbox at stop short, shutdown the engine and park it 

well. 

Specific see “Instructions of 4WG200 Power Shift Gearbox”. 

Gimbal of driving shaft 

1． Fill lithium-based lubricant into the grease fitting of the gimbal of middle shaft.   

2． Fill lithium-based lubricant into the grease fitting of the gimbal of forward shaft. 

3． Fill lithium-based lubricant into the grease fitting of the gimbal of fork of rear 

driving shaft. 

4． Fill lithium-based lubricant into the grease fitting of the gimbal of rear driving 

shaft. 

Additional Maintenance Contents for the First 1500 Hours after 

Usage of New Loader Are Given below. 

Differential gear and final transmission 

Replace oil. 

See oil replacement in “Front axle and rear axle’ in the maintenance of 50 hours 

running-in of new loader”. 

Working device and hydraulic steering system 

Replace oil. 

See the steps in “Working device and hydraulic steering system’ in the maintenance of 

the running-in 50 hours of new loader”. 

9.9 Maintenance of Each 2000 Working Hours or Every Year 

Before carrying out any operation or maintenance, the warnings and annotations in this 

manual’s safety chapter shall be read and understood. 

 Firstly carry on the aforementioned examination items 

 Firstly, carry on the aforementioned items.