LG936L Wheel Loader. Service manual - part 26

Operation & Maintenance Manual──LG936L Wheel Loader 

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about 20  to 40  If it is lower than this temperature, be sure to warm it up to this temperature 

℃

℃

before draining it. 

1.8 Check the Oil and Filters 

z  After the oil is changed or filters are replaced, check the oil and filters. If large amounts of 

metallic particles or impurities are found, consult the maintenance people. 

1.9 Fuel Strainer 

z  Do not remove the fuel strainer while fueling. 

1.10 Oil Changing 

z  Change oil in relationship dust-free places to keep impurities out of the oil. 

1.11 Welding Guide 

z  Turn off the starting switch of the engine and remove the battery cables. 

z  Keep the distance between the grounding cable line and welding area more than 1m. 

z  Avoid welding near the seal rings and bearings. 

z  Never weld any pipe or tube while has fuel as or oil in them. 

1.12 Fire Prevention 

z  Clean the parts with inflammable cleaner or light oil. Keep spark or cigarette light away from 

them. 

1.13 Sealing Part 

z  When replacing O-ring or gaskets, clean the clamp faces first, and make sure the O-ring and 

gaskets are in the correct assembly position. 

1.14 Checking the Frame 

z  After a long time of operation in rocky conditions, check for damage of the undercarriage and 

loose or damaged between bolts and nuts. 

1.15 Attention to Washing Machine 

z  Wash machine after complete cooling of the engine. 

z  Do not allow water to spray on any electric components. 

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1.16 Checking in Raining and Snowing Circumstances 

z  Clean the machine immediately after working in rain and snow. Lubricate and coat anti-rust oil to 

other parts. 

1.17 Dusty Circumstances 

Do the following when the machine works in dusty circumstances: 
z  Inspect and clean air filter frequently to avoid blocking. 
z  Clean the radiator frequently to avoid blocking. 
z  Clean and replace fuel filter frequently. 
z  Clean the electric components, especially the starting motor and alternator, to avoid accumulation 

of dust affecting dispelling heat. 

Refer to 

Operation and Maintenance Manual

 of diesel engine for replacing and 

maintaining air filter. 

1.18 Avoid Using Mixed Oil 

z  Never use oil mixed from different brands. If only a different kind of oil from the one previously 

used, drain the oil from the machine, and fill with the new brand oil. 

 

2. DETAILED RULES OF MAINTENANCE 

2.1 Detailed Rules of Using Oil, Fuel and Coolant 

△

!

 

WARNING

 

z  Because of bad operating conditions and dusty ambient 

circumstances, oil easily deteriorates. Change oil as soon as the oil 

deteriorates or is mixed with many impurities. 

z  Add the specified volume of oil. Either too much or too little oil may 

cause problems. 

z  Clean and replace the relative filters when changing oil. 

 

 

2.1.1 Fuel 

z  The fuel pump is a precision instrument. If the fuel mixes with water or dirt, the fuel pump will 

not work normally. 

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z  Never let impurities enter when changing and adding fuel. 

z  Strictly choose the fuel brand according to this manual. 

z  The fuel may be frozen at low temperatures (particularly temperatures lower than -15 ). So it is 

℃

necessary to change the kind of fuel according to the ambient temperature. 

z  Always fill the fuel tank full after operating to prevent the water, which is condensed by the 

moisture in the air, from entering the fuel tank. 

z  If the engine fails to suck fuel or the filters have been just replaced, drain out the air in the circuit. 

 

2.1.2 Coolant 

z  Use clean and soft water, rain or tap water as coolant. Well water and spring water can be used as 

coolant after soft processing and precipitation to avoid causing scale which can influence the 

performance of dispelling the heat. 

z  If the engine overheats, add coolant until the engine cools down completely. 

z  Add coolant to specified level. If the level is too low, it will cause the overheating of the engine 

system and the corrosion of the cooling system. 

z  Add antifreeze to coolant if ambient temperature is lower than 0 . Drain the coolant out after 

℃

working (please refer to 

CHAPTER III 3.5.3 Operation in Cold Weather

 and refill oil 

before next working if there is no antifreeze in the coolant. 

z  Antifreeze is flammable. Keep fire away when adding the antifreeze. 

z  Never use 100% antifreeze as coolant. Refer to the following table to select the mixing 

proportion. 

 
 

Proportion% 

Name 

Glycol Alcohol Glycerin Water 

Proportion 

Freezing 

point≤℃ 

Glycol  

Antifreeze 

60 
55 
50 
40 

 
 
 
 

 
 
 
 

40 
45 
50 
60 

Proportion in 

volume 

-55 
-40 
-32 
-22 

Alcohol 

Glycerin 

Antifreeze 

 

30 
40 
42 

10 
15 
15 

60 
45 
43 

Proportion in 

weight 

-18 
-26 
-32 

 

2.1.3 Lubricant 

z  Lubricant is used to reduce noise and prevent wear on the joint surfaces. 

z  Joints not included in the manual (connectors, jointing sleeves) are treated during overhaul. So 

they do not need be lubricated. When some parts become inflexible because of long-term 

operation, it is necessary to add lubricant. 

Operation & Maintenance Manual──LG936L Wheel Loader 

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z  Remember to wipe off the overflow lubricant when adding it. 

2.1.4 The Storage of Oil and Fuel 

z  Prevent water, dirt or other impurities from mixing with the oil. 

z  Follow the rule, first in first out, to maintain oil quality during long-term storage (Use the oil with 

the longest shell life). 

2.1.5 Filters 

z  Filters are extremely important safety components. They can prevent impurities in the fuel from 

entering important equipment and causing problems. Replace all filters periodically. For the 

maintenance cycle, refer to 3. CONTENT OF MAINTENANCE, in this chapter. Replace 

filters at shorter intervals when the machine works in a severely bad environment. 

z  Never try to clean paper filter elements and use them again. Always replace them with a new 

one. 

z  When replacing the oil filters, check whether there are some metallic particles adhering to the old 

filter. If some metal particles are found, consult the maintenance people. 

z  Never open the packs of new filters until they are used. 

z  Always use authorized filter parts. 

2.2 Selection of Fuel, Coolant and Lubricant 

2.2.1 Selection Table of Fuel, Coolant and Lubricant 

Please choose Shandong Lingong’s preferred special oils and choose specified oils from the following 

table. 

Kinds of 

Fluids 

Recommended Types And Standards 

Capacity 

Using places 

Ambient temperature≥-15°  CD 15W-40 Diesel Oil    GB11122
 

17L 

 Yuchai Engine 

Ambient temperature<-15°  CD 5W-30 Diesel Oil    GB11122 

13.3L

Weichai Engine 

Engine oil 

CALTEX & GINDERLEGR engine oil 15W-40

 

12L 

Cummins Engine 

6# 

transmit oil    

Q/SH303 064 

45L 

Transmit 

oil

 

8# 

transmit oil    

Q/SH303 064 

45L 

Torque converter and 

gearbox 

Gear oil 

Heavy duty gear oil for automobile (GL-5) 85W-90    GB13895  2×13L 

Main reducer and final 

drive 

Ambient temperature≥-5° L-HM46 hydraulic oil GB11118.1 
Ambient temperature≥-10°L-HM32 hydraulic oil GB11118.1 
Ambient temperature≥-30°L-HV46 hydraulic oil GB11118.1 

128L 

Hydraulic oil tank 

(Domestic Type) 

Hydraulic 

oil 

CALTEX superfine wind ring of temperature anti-grinding 
hydraulic oil or MOBIL DTE25 

128L 

Hydraulic oil tank 

(Export Type)