CG935G Wheel Loader. Manual - part 23

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shall be replaced.   

Dipper tooth 

The damaged dipper tooth shall be replaced. and properly connect it with bolts and nuts. 

Prior to replacing the dipper tooth, the dipper shall be padded well, or not, it will result in 

personal injuries and death possibly. 

9.2 Maintenance of Each 10 Working Hours or Every Day 

Engine oil 

Examine oil level. The oil shall not be excessive so as to avoid the engine from 

damage. 

1． Open the maintenance door at the side of the machine; 

2． Keep the oil level between the normal mark on the oil scale; 

3． If the oil requires to be added, open the oil filling cap to add oil; 

4． Clean the oil filling cap and install it. 

5． Close the maintenance door. 

Transmission fluid 

Examine the oil level. The transmission fluid scale is located at the left side of the machine. 

1． In low-speed idling, the oil level shall be kept between two scales of the oil scale; 

2． The oil shall be added depending on demand; 

3． Clean the oil filling cap and install it. 

Hydraulic oil 

Examine the oil level. The hydraulic oil box is situated behind the cab and hydraulic oil’s 

level is at left side. 

1． Keep the oil level at the middle of the oil level gauge; 

2． If the oil requires to be added, open the oil filling cap to add oil with an oil tube; 

3． Clean the oil filling cap and install it. 

In oil filling, the dipper shall be leveled on the ground. 

Cooling system 

Examine the level of the coolant. The radiator cap is located in the engine hood behind the 

machine. 

1． Open the maintenance door on the engine hood; 

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2． Unfasten the radiator cap slowly to release the pressure; 

3． Keep the level of the coolant within 1cm under the water filter. If the water requires to be 

filled every day, please examine the leakage. 

4． Examine the sealing of the cap. Any damaged cap shall be replaced; 

5． Mount the cap and close up the maintenance door. 

Fuel box 

Discharged water and precipitate 

The fuel box is located at back of the machine, and the discharging screw plug is located 

at the right bottom of the fuel box. 

1． Release the discharging screw plug slowly to discharge the water and precipitate. 

2． Fasten the discharging screw plug. 

Round examination over machine 

Examine machine 

1． Examine whether the working device and linkage gear are worn. Any damaged one shall be 

replaced; 

2． Examine whether bulbs and glass are damaged. Any damaged one shall be replaced; 

3． Examine and remove the dust and foreign substance on the engine hood; 

4． Examine leakage of cooling system, hose failure and dust accumulation status. The leakage 

shall be removed and foreign substance on the radiator shall be got rid of; 

5． Examine the leakage status of the hydraulic system; examine the oil box, soft and hard tubs, 

screw plug, and joints. Any leakage shall be removed; 

6． Examine the leakage status of front and rear differential gears, final transmission, and wet 

brake; 

7． Examine the leakage status of the transmission box; 

8． Examine damage and pressure of tyres; 

9． Examine whether the covers and hoods are closed and whether they are damaged; 

10．  Examine ladder, aisle and railing and their cleanness; 

11．  Examine the cleanness of the cab; 

12．  Examine whether the instruments and switches are damaged. Any damaged one shall be 

replaced; 

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13．  Examine the rear bumper for optimal vision. 

Cleaning of glass window   

Clean windows with ordinary cleaning fluid for windshields. Open the window. 

Instruments and Lights 

Start engine and check instruments, glasses and switches for damages; check all lights; whistle 

electric horn and then shut down engine. 

9.3 Maintenance after 50-Hour Running-in of New Loaders 

Gearbox Oil 

 Replacing gearbox oil: gearbox oil should be replaced after 50-hour running-in of new 

loader. 

Start engine to heat up oil. The loader should be parked in a level position with the bucket 

laid down and a slight down-ward pressure being applied. 

Apply parking brake and shut down engine. 

1. Remove the oil drain plug in gearbox drain pan to discharge oil remained. 

2. Replace filtering element of fine filter. Refer to "Replacing filtering element" in Maintenance 

per 500 Working Hours or per Season. 

3. Dismount oil suction pipe and drain pan assembly from box body, and dismount support plate 

assembly from the drain pan assembly. 

4. Take off magnet on the support plate assembly and clean it with a clean stiff brush or 

compressed air. 

5. Clean oil suction pipe, support plate assembly and drain pan. Replace the support plate 

assembly if filter screen is damaged. 

6. Reinstall the magnet onto support plate assembly. 

7. Reinstall the support plate assembly onto drain pan. Check the gasket and replace it if 

damaged. 

8. Reinstall drain pan assembly, tighten screws and then install oil suction pipe. 

9. Clean and install oil drain plug into gearbox. 

10. Remove the oil drain plug under the torque converter oil cooler at the rearmost end of 

machine to charge oil remained in torque converter oil cooler. Clean and reinstall oil drain plug. 

11. Fill specified torque converter oil to the high level of oil gauge with the engine being shut 

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down. 

12. Start engine and apply brake. 

13. Slowly operate gearbox control lever with the engine idling to circulate oil and fill torque 

converter, its oil cooler and pipes with oil. Check oil lever in torque converter, which should fall 

between lower and higher levels of oil gauge. 

14. Place gearbox control lever on neutral position and then shut down engine to park the 

machine. 

 Never hammer the magnet on any hard objects. Damaged magnet must be replaced. 

 After running-in, maintain the new loader at normal frequency. 

Replace the oil of differential gear and final transmission of the front and rear axles 

Maintain according to the following requirements (except otherwise herein provided); 

1． Disassemble the oil drain plug of front axle and rear axle, and discharge the oil. 

2． Clean the oil drain plug and reinstall it. 

3． Disassemble the oil drain plug of front axle and rear axle, and refuel the axle through the 

oil filling port till bleeding. See figures and tables in “the viscosity and full capacity of oil”. 

4． Install the oil drain plug. Start the engine and let it work for a few minutes. Re-check the oil 

level and refuel to the specified position if necessary. 

5． Install the oil drain plug. 

Working device and hydraulic steering system 

Replacement of hydraulic oil box 

The machine shall be on level ground, set all working devices in the ground and exert 

downward pressure on them. Close the parking brake and shutdown the engine. 

1． Disassemble the oil filling cap of the hydraulic tank. 

2． Open the vent valve at the bottom of the hydraulic tank and discharge the oil. 

3． Close the vent valve. 

4． Replace the filter of hydraulic system. See “Hydraulic System” in “Maintenance of Each 

500 Working Hours or Every Season”. 

5． Disassemble the fuel strainer, clean it and install it. 

6． Refuel to the hydraulic tank. See “Viscosity and Full Capacity of Oil”. 

7． Check the gasket of the oil filling cap and replace the damaged gasket.