CG935G Wheel Loader. Manual - part 22

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has smoke and dust, sulfide, oxide and nitride and measure their amount. The infrared analysis 

may help us work out the replacement cycle of the lubricant under special working conditions. 

The infrared analysis method shall be conducted simultaneously with the wear element 

analysis method and chemical and physical tests so as to ensure the correct evaluation. 

 

S.O.S Cyclogram

 

Oil box 

Engine oil 

Hydraulic 

oil 

Differential  

/Final drive oil 

Transmiss

ion fluid 

Time interval  250h 

500h 

500h 

500h 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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IX 

Maintenance Interval 

9.1 Upon Request 

Prior to carrying out any operation and maintenance, the warnings and annotations in 

this manual’s safety chapter shall be read and understood. 

Please refer to the instructions for use and maintenance of the engine for cleaning of air 

intake system. 

Repairing of filtering element 

Replace/clean coarse filtering element 

1． Dismantle the cover of air filter (1); 

2． Dismantle coarse filtering element (2) from the shell of 

the air filter; 

3． Clean the shell of the air filter; 

4． Clean and examine the coarse filtering element. Please 

see “Cleaning of Coarse Filtering Element”; 

5． Installed the cleaned coarse filtering element in the shell 

of the air filter; 

6． Clean and install the cover, and fasten the bolts on the cover with hands not a tool. 

After installing a cleanly coarse filter, if the engine discharges black smoke, new fine 

filter shall be installed. 

After being cleaned for 6 times, the coarse filtering element shall be replaced. Even if it is 

not cleaned for 6 times, it shall be replaced one time every year.   

Replace fine coarse filtering element 

1． Open the maintenance door; 

2． Dismantle the cover and coarse filtering element; 

3． Dismantle the bolt fixing the fine coarse filtering element and then dismantle the fine 

filtering element; 

4． Cover the air inlet and clean the interior of the air filter; 

5． Examine the gasket between air inlet pipe and shell. Any damaged gasket shall be replaced; 

6． Open air inlet to install a new fine filtering element; 

7． Install the nut and gasket on the screw. The torsional moment of the nut shall be 27±7N.m; 

1

2

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8． Install the coarse filtering element and cover, and fasten the bolts on the cover with hands 

not a tool; 

9． Close the maintenance door. 

Clean coarse filtering element 

While cleaning the coarse filtering element, do not strike it, or not, the engine will be 

damaged. 

The filtering element may be cleaned with pressure air, pressure water or cleaning. 

1． Induct the air or water along with internal and external wrinkles of the filtering element; 

2． After cleaning, examine the coarse filtering element. Do not 

use the filtering element with a damaged wrinkle, gasket or 

seal; 

3． Pack the cleaned filtering element and store it at a cleanly and 

dry place. 

Accumulator

 

Checking Electrolyte 

Batteries used for the machine are conventional lead-acid 

batteries, installed on both sides of rear end of back frame. Check 

electrolyte every 100 hours. 

All fixed bolts of the accumulator shall be fastened per 1000 hours. 

Check the following items at least every 1,000 hours, or at a higher frequency if required by the 

environment. 

 Clean the battery top with a clean piece of cloth. 

 Keep terminals clean and apply Vaseline. 

Water consumption by each battery should not exceed 30CC under normal charging frequency 

and weather conditions. 

Check the batteries once a week under anomalous temperature. In this case the water 

consumption may increase. 

0.  Remove battery cover. 

1.  Clean battery surface with a clean piece of cloth. Keep terminals clean and apply Vaseline. 

2.  Check electrolyte level in each battery, and add distilled water to keep the level not lower 

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than the shield plate 20mm. In case there is no distilled water available, cooled drinking 

water may be used as a substitute. 

3.  Reinstall battery cover. 

Radiator

 

Clean or replace the pressure cover 

The maintenance door of the radiator cover is designed at the rear topside of the machine. 

1． Open the maintenance gate of the radiator. 

2． Slowly loosen the radiator cap and release the pressure. 

3． Examine the damage, precipitation or foreign substance of the cover, and wipe off the cover 

with a cleanly cloth or if necessary replace it with a new one; 

4． Fit on the cover; 

Close the maintenance door. 

Clean the exterior of radiator core 

Open the radiator cowling at the back of the 

machine. 

The dust, leafs and other foreign substance on 

the radiator may be removed with compressed air, 

high-pressure water or steam (compressed air is 

better).  

Fuse

 

Location: Fuse box is installed at the left lower side of the instrument desk in the cab. 

Fuse--It protects the electrical system from damage due to short circuit. If the fuse is burnt out, 

replace it with a new one. If the new fuse is burnt out again, check and repair the circuit. Do not 

reel too much coils of fuse. 

 Only the fuse of fusing current can be used, or not, the circuit will be damaged 

possibly. If the fuse requires to be replaced frequently, it is possible the circuit is 

involved in failure. Please examine the circuit. 

Windscreen wiper 

Examination/replacement 

Examine the brush of the wiper. If it is worn too mush or damaged, or cracked, the wiper