CG958G Wheel Loader. Manual - part 32

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By the chemical and physical tests, the proportion of water, fuel, and antifreezing 

agent in the lubricant may be examined. 

The oil status analysis adopts infrared analysis method to determine whether the 

lubricant 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 

Caution 

In repairing of air filter, the engine shall be turned 

off to avoid damage.   

Please repair the air filter according to the instructions 

for use and maintenance of fuel engine. The following 

steps are for reference only.   

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 

Caution 

After each cleaning of fine filtering element, do not try to reuse it after 

cleaning. 

1

2

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After the coarse filtering element is repaired for three times, the fine one 

shall be replaced. 

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

new fine filter shall be installed. 

 

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; 

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. 

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Accumulator

 

The accumulator of this loader is free from maintenance, which is located at the 

left side of the rear end of the rear frame. 

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

 

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 link is burnt out, a new 

one of same specification shall be used; if the fuse 

link is burnt out again, the circuit shall be examined 

and repaired.