Operation & Maintenance Manual
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LG968 /969Wheel Loader
31
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Clean the oil paint at the place where welding is needed to prevent harmful gas.
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Please avoid welding on the hydraulic equipment or
pipe, or the place that is near. Because flammable
steam and spark may be generated and it is dangerous
to catch fire.
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Cover the robber pipe, wire or pressure pipe use
anti-fire plate during welding, because the spark may
fall onto them which may cause rupture suddenly,
insulating tape shatter.
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Be careful when welding near tire which may cause thermal explosion of tire.
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Wear protective cloth to weld.
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Keep breezy in welding area.
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Clean up the flammable materials and equip fire extinguisher.
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Never
affect the vehicle and the working equipment, safety and strength reconstruct.
8.11 Examine and Repair of Coolant System
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Severe burn may be caused if open the cover of oil tank, radiator after welding, pour water or oil
immediately after finishing welding, because the temperature of hydraulic oil, fuel and water in
engine, oil and oil in radiator may still very high and the pressure may still be high at this time.
Follow the program if do the operations above.
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Shut the engine, cool the hot water, open the cover
slowly and gently to release the pressure. Use the
arm to feel the temperature of air in front of water
radiator to see whether the water temperature goes
down. Be sure never touch the radiator.
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Shut the engine, cool the oil, open the cover slowly
and gently to release the pressure to prevent hot oil
jet. Use the arm to feel the temperature of air near
the hydraulic oil radiator, torque converter oil radiator to check whether the temperature comes
down.
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During machine warming,
do not
touch engine, silencer, tail pipe, relay to prevent burn.
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During machine warming,
do not
disassemble the water heat sensor of engine, oil heat sensor of
