CG935G Wheel Loader. Manual - part 21

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 The oil for transmission box and transmission system cannot be used for the engine, or not 

the service life of engine shall be shortened. 

 This machine adopts Mobil Delvac Super1300 (the level is SAE15W-40). 

6.4 Differential Gear and Final Transmission Fluid 

 In order to attain optimal service life and performance of the parts of the front and rear 

axles, the oil of proper viscosity shall be chosen. The differential gear and final 

transmission fluid recommended by the SICHUAN CHENGDU CHENGGONG 

CONSTRUCTION MACHINERY CO., LTD. is the one in conformity with the API GL-5 

code. 

 This machine adopts Mobilube GX

 HD80W-90

. 

6.5 Grease 

There are many kinds of grease recommended by the SICHUAN CHENGDU 

CHENGGONG CONSTRUCTION MACHINERY CO., LTD. They are applicable different 

conditions: 

 MPGM 

MPGM is applied to heavy-duty roller bearing and joints. The high-pressure grease 

enables the machine to have its longest service life. Under NLGI NO.2 is applicable to the 

conditions of most kinds of temperature. 

If MPGM grease is not available, the multi-purpose grease containing 3%~5% 

molybdenum may be used. 

 It is recommended to use MPGL (for non-high pressure area). 

The NLGI NO.2 grease is used for automatic light-load high-temperature lubrication 

(175℃). The grease serves good mechanical stability, anti-oxidation and antirust functions, and 

good separation torque. If this kind of grease is not available, the similar multi-purpose grease 

may be used. 

 This machine adopts molybdenum disulfide lithium-based grease or 3# and 4# 

calcium-based grease. 

6.6 Braking Fluid 

This machine adopts hydraulic braking system and does not require the braking fluid 

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separately. The liquid for the braking system is same as the one for the hydraulic system. 

All kinds of operation oil shall be cleanly. The oil for hydraulic system shall meet the 

requirements of 18/15（GB/T14039-93）或 NAS9 18/15 (GB/T14039-93) or NAS9 level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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VII Viscosity and Full Capacity of Operation Oil

 

7.1 Viscosity and Temperature Range of Operation Oil 

Specification and No. 

Type 

The brand number added as the 

product that has an export 

destination to a non-low 

temperature area 

The brand number added as 

the product that has an export 

destination to a low 

temperature area 

Oil for torque 
converter and 

transmission box 

SAE 15W-40 Mobil Delvac 

Super 1300 

  Mobil Delvac MX 15W-40 

Axle lubricant 

HD80W-90(Mobilube HD 

80W-90) 

Same as left column 

Hydraulic oil 

Hydraulic oil(Mobil DTE 25) 

Hydraulicoil(MobilDTE 15M)

Common axle 

DOT 3 Mobil Super Heavy 

Brake Fluid 

Same as left column 

Air-pushing 

oil brake 

Hydraulic oil (Mobil Delvac 

Hydraulic 10W) 

Same as left column 

B

ra

k

e 

oi

l 

W

et 

axl

e 

Hydraulic 

brake 

/ / 

Engine oil   

0# light diesel fuel 

-20# light diesel fuel 

Grease 

NLGI 2 lithium-based 
(Mobilgrease HP 222) 

Same as left column 

Engine oil 

SAE 15W-40 Mobil Delvac 

Super 1300 

  Mobil Delvac MX 15W-40 

 Anti-icing fluid 

Mobil Antifreeze(Clear water 
40%+antifreeze 60%) 

Mobil Antifreeze(Clear water 
20%+antifreeze 80%) 

7.2 Full Capacity of System 

Full Capacity (approximation)

 

Oil box or system 

Liter

 

Cooling system 

40 

Fuel box 

160 

Engine oil 

27 

Transmission fluid 

35 

Differential gear and final 

transmission fluid (single unit) 

26 

Hydraulic oil box 

125 

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VIII S.O.S 

S.O.S method is adopted to examine the conditions of the machine and whether the 

machine requires to be maintained. As each kind of oil is sampled, the lubricant shall be heated 

and mixed evenly so as to ensure that the sample oil has representativeness. 

8.1 Acquisition of Sample Oil for S.O.S 

In order to realize the good preventive maintenance scheme, we suggest adopting the 

S.O.S method to examine the conditions of the machine and whether the machine requires to be 

maintained. As each kind of oil is sampled, the lubricant shall be heated and mixed evenly so as 

to ensure that the sample oil has representativeness. 

For acquisition of sample oil for S.O.S, several methods are available. 

  Insert sample oil doper into the oil groove. 

  Use sample oil valve. 

  Use discharged oil as the oil is replaced. 

Note: We suggest adopting the first or second method. If two methods do not work, the 

discharge oil may be used. 

As the discharged oil is adopted as the sample oil, the oil cannot be sampled from the oil 

discharged firstly or lastly because it is not mixed evenly and has no representativeness. 

8.2 S.O.S (Regular Sample Oil) Analysis 

The regular sample oil analysis is composed of three basic tests: 

  Wear element analysis. 

  Chemical and physical tests. 

  Oil status analysis. 

The wear element analysis adopts spectrophotometric method to examine the wear degree 

of components by measuring the concentration of the wear mental elements in the sample oil 

(unit: number of particles per one million). If the test results deviate from the concentration 

range of normal wear, we may confirm that the part will be disabled soon. 

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