LG936L Wheel Loader. Manual - part 10

Operation & Maintenance Manual──LG936L Wheel Loader

z Never do any modifications which may affect the performance, safety and strength capability of

the vehicle and the working equipment.

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.

Operation & Maintenance Manual──LG936L Wheel Loader

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.

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.

△

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.

Operation & Maintenance Manual──LG936L Wheel Loader

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

materials.

z Keep fire away from the storage battery because

explosive gas may be generated. Strictly follow the

program in this user manual to maintain the storage

battery.

z Make sure there are no flammable materials, such as dry grass and old paper, near the high

temperature parts such as the silencer when parking the machine.

z Check whether there is leakage of fuel, mobile oil or hydraulic oil. Replace the broken soft pipes.

Clean before operation and after repair.

z Check the wire to see whether it is breakage and voltage leakage; if so, replace it or repair it.

z Use inflammable liquid to clean the parts; do not use gasoline or other flammable materials.

z Never weld or flame cut the pipe or tank containing flammable liquid. Clean them using

inflammable liquid before welding and flame cutting.

z Check the fire extinguisher before starting repair work. Know the location of fire extinguishers

and first-aid bag and know how to use them.

z Never use fire (match or lighter) to check dark areas.

8.14 Air Storage Tank

z Open the drain valve of the air storage tank to drain every day.

This is especially important in cold weather. Make sure the drain

valve is closed before starting the engine.

z Examine the outside of the air storage tank frequently because of high pressure air. Examine the

anti-

erosion layer and welding line to ensure safety.

Operation & Maintenance Manual──LG936L Wheel Loader

8.15 Electric System

z A professional person with a proper license must maintain the electric system.

z Connect the grounding cable last to prevent an explosion due to electric sparks near the battery

when adjusting outside power.

z Remove the start up key before repairing the electric system.

8.16 Maintenance of Storage Battery

Oxygen and hydrogen may be generated during battery charging because the electrolyte of the storage

battery contains vitriol. So mis-operation of the storage battery may lead to severe injury or fire.

Please do as follows:

z Keep kids away from the battery. Wear safety glasses and rubber gloves to deal with the battery.

If vitriol gets in the eyes or on the clothes or wash with lots of water and go to hospital if hurt

severely.

z Keep fire away from the battery during charging because the generation of oxygen and hydrogen

may cause an explosion. Prevent circuit from shorting.

z Keep fire away from the crust on the battery because it is flammable.

z Store the battery under dry, clean and well ventilated circumstances with temperatures between

5~25℃. Prevent sun light irradiation. Keep the battery 2m away from a heat source. The battery

will be affected by high temperature.

z Never reverse and put horizontally. Prevent damage by too much pressure.

z The storage life of a battery is 6 months under room temperature without charging. If over 6

months, please charge before use.

z Pay attention to the labels on equipment before installation to prevent accidents.

z Spread vaseline on the poles to prevent erosion. The wire connections should be firm and

credible. Never hammer the wire pole which may cause the leak of vitriol.

z Connect the positive pole of the storage battery with the negative pole of the machine first, and

then connect the negative pole of the storage battery with the positive pole of the machine.

z Put the battery on the shaft using the upside fixing method or downside fixing method to prevent

destruction caused by loosening.

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