Operation & Maintenance Manual
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LG968 /969Wheel Loader
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the oil pan of gearbox. Replace the filter cartridge in the oil lines of torque converter-gearbox.
Replace the gearbox oil.
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Change the gear oil of front and rear axles.
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Check and clean the filter mesh of oil bowl in the booster pump. Clean the air vent and replace
the brake fluid.
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Check if there is leakage in the hydraulic system. Check and clean the air vent of hydraulic
reservoir. Clean the hydraulic reservoir. Replace the filter cartridge of oil suction and return filter.
Replace the hydraulic oil.
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Check the clearance and wear condition between pins and bushes in every articulated point.
3.6 Every 2000 Hours (Year) Service
Carry out the periodic maintenance of every 10, 50, 250, 500 and 1000 hours with this maintenance
operation at the same time.
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Check performances of the torque converter and gearbox, and disassemble them for checking if
necessary.
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Check the sealing performance of multi passage valve and hydraulic tank by measuring the
natural sedimentation volume of the cylinders fuel oil, and then check the system pressure. If the
natural sedimentation volume is over than its specified value, replace the multi passage valve or
hydraulic tank. Contact us for details.
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Check the weld seams of rim and other stress parts and adjust the deformation.
3.7 Alteration
The maintenance principles listed above are the normal requirements. The maintenance time should
be determined by the closer one between two of the maintenance schedules. If the working condition
is very severe, please short the maintenance time cycle according to the real conditions to increase
maintenance time.
3.8 Always replace air-storage tank when carrying out 3 years service.
