LG956 Wheel Loader. Manual - part 10

Operation & Maintenance Manual──LG956L Wheel Loader 

 39

8.6 Maintenance While the Engine is Working   

Routine maintenance of the machine should never be done while the engine is working. When it is 

necessary, please follow the rules below: 

z  Assign an operator to sit on the seat to ensure all the 

maintenance people can have contact with him so he 

can prepare to shut the engine when requested. 

z  Never touch a high temperature part such as tail pipe 

and silencer to prevent injury. 

 

z  Be careful if the repair space is near the rotation part.   

z  Do not touch any congtrol handle of working device . 

If necessary to touch it, warn the others to go to a safe place. 

z  Never let any tool or body part touch the fan leaf or fan belt. Otherwise serious hurt may occur. 

z  Do not make adjustments unless fully trained to do so. 

 

8.7 Do Not Let Anything Fall into the Inner Part of the Machine   

z  When opening the examination window and the oil filling port of the oil tank, make sure that 

nothing (such as nuts, bolts, cotton yarn or tools) falls into the inside of the machine. If it happens, 

the machine may be disabled. Pick out the fallen pieces safely.   

z  Do not carry any unnecessary tools or parts in your pockets during examination of the machine. 
 

8.8 Cleaning 

z  Wear the anti-slide shoes to prevent sliding when cleaning the machine. Wear protective clothes 

when using high pressure water to clean the machine. 

z  Clean routinely to prevent dirt or mud splashing into the eyes or slippage caused by oil on the 

machine. 

z  Do not use a flammable scour when cleaning the machine. 

z  Shut the engine to clean the inner part of the machine, put all the levers (or handles) in the neutral 

position, draw the brake valve control handle (or the parking brake switch) and keep it in the 

braked position. 

Operation & Maintenance Manual──LG956L Wheel Loader 

 40

z  Do not let water enter an electric part (such as sensor, wire connector) or operator cab. If so, the 

operation may be disabled and the electric circuit may be damaged. 

z  Wear protect clothes and glasses when using compressed air to clean the filter mesh. 
 

8.9 Heavy Materials 

z  Wear protect clothes, safety glasses and safety helmet and put a copper bar between the hammer 

and the part being hit. 

z  Eyes may be damaged by flying hard particles, such as pin and bearing when hit by a hammer. 

z  Use tools and heavy materials carefully. Prevent them falling down. 
 

8.10 Welding Repair 

Electric welding requires a special technique, proper equipment and place. No person is allowed to 
weld without a license. Escaped gas and damaged electric wires are potential problems during 
welding. Obey the following: 
z  Switch off the electricity in the terminals for storage to prevent explosion. 
z  Clean the paint at the welding site to prevent the production of harmful gas. 
z  Avoid welding on the hydraulic equipment or pipe, or places nearby. Flammable steam and 

sparks may be generated.   

z  Cover the rubber, wire or pressure pipe and use 

anti-fire plate during welding because a spark may 
cause a sudden crack or shatter the insulating tape. 

 
 
 
 
z  Be careful when welding near tires, which may cause 

a thermal explosion. 

z  Wear protective clothes during welding. 
z  Keep the welding area ventilated. 
z  Clean up the flammable materials and check the fire extinguisher. 
z  Never do any modifications which may affect the performance, safety and strength capability of 

the vehicle and the working equipment.   

Operation & Maintenance Manual──LG956L Wheel Loader 

 41

8.11 Maintenance of Coolant System 

z  Severe burn may be caused if the cover of the oil tank and the radiator are opened after welding, 

so pour water or oil on the cover of the oil tank immediately after finishing welding. The 
temperature and pressure of hydraulic oil, fuel and water in the engine, the oil and water in the 
radiator may be still very high after just finishing the work. Wait for the temperature falling down 
and follow the procedures to do the operations above. 

z  To avoid hot water ejecting from the radiator, stop 

the engine, let the hot water cool, and open the cover 
slowly to release the pressure. Never touch the 
radiator. Check the air temperature in front of the 
radiator to gauge the temperature. 

z  To avoid hot oil ejecting from the radiator, stop the 

engine, let the hot water cool, and open the cover 
slowly to release the pressure. Never touch the 
radiator. Check the air temperature in front of the 
radiator to gauge the temperature. 

z  While the machine is warming-up, do not touch engine, silencer, tail pipe or relay to prevent 

burn. 

z  While the machine is warming-up, do not disassemble the water heat sensor of the engine, oil 

heat sensor of the torque converter or the water pipe of air condition to prevent burn. 

z  Never let the harmful alkaline materials in the coolant system touch your skin or eyes. 

z  Choose a proper container to hold the liquid when replacing the coolant, mobile oil of the engine, 

oil of the transmission box and cleaning the parts. 

Please refer to 

8.20 Waste Materials 

in this 

chapter for the methods to deal with the waste liquid. 

 

z 

Keep fire off when disassembling the connection 

pipe of the air condition compressor.

 

8.12 Examination and Repair of Hydraulic 

System 

z  Lock the oil tank and other hydraulic equipment safely; release the pressure of all hydraulic 

systems before examining the hydraulic system. 

Operation & Maintenance Manual──LG956L Wheel Loader 

 42

z  Never bend or beat the high pressure hydraulic pipe. Never assemble the hard pipe and soft pipe 

if they are bent abnormally or broken. 

z  Routinely repair any loose or broken fuel oil circuits, lubricating oil circuits, the hard and soft 

pipe of the hydraulic system. Leakage can cause fire, so routine maintenance is critical. 

z  Examine the pipe system carefully (hard pipe and soft pipe), screw down the connectors 

according to the proper torque. Do not examine a leak using your hand, rather use a board or 
paper board. The leaking hydraulic liquid may penetrate your skin and cause death. If the liquid 
splash onto your skin, the case of a physician trained for this kind of “burn” will be immediately 
required. 

 

 

 

 

 

 

 

 

 

 
 
 

z  Make sure all the pipe clamps, protective board, and anti-heat cover are installed properly to 

prevent vibration and overheating due to friction with other parts. 

z  Choose proper container to hold liquid when replacing the hydraulic oil of the hydraulic system 

and when cleaning the parts. Please refer to 

8.20 Waste Materials

 in this chapter for the 

methods to deal with waste liquid. 

8.13 Preventing Fire 

z  Stop the engine before adding fuel. Do not smoke 

and keep fire away while adding fuel. 

z  Keep fire away from the storage place of fuel, grease 

or other flammable materials. 

z  Clean the flammable substances on the machine such 

as fuel, grease oily cloth or other flammable 

△

!  

NOTICE

 

Please replace these parts in the following conditions: 
z  Connectors are broken or leaking. 
z  Outside of soft pipe is abrasive or cracked, and the steel wire of the 

strengthening layer is bare. 

z  Local of soft pip is upheaval. 
z  Soft pipe is obviously torqued or staved. 
z  Steel wire of strengthening layer penetrates the outside layer. 
z  The end connectors are misplaced.