Operation & Maintenance Manual
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LG968 /969Wheel Loader
98
3 RULES OF MAINTENANCE
Maintenance content includes running in of the new machine and periodic maintenance of every 10,
50, 250, 500, 1000 and 2000 hours.
3.1 Every 10 Hours (Days) Service
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Check the sealing performance of work equipment systems such as hydraulic, steering and brake
system.
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Check the flexibility and reliability of brake.
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Check whether the electric circuit is correct and electric components are normal.
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Check the oil level in the oil tank and the water level in the water tank.
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Add greases to fan shaft, jointed point between front and rear frames, driving axles, jointed points
of oscillating frame and joint points of work equipment.
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Check if there are other abnormalities.
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Refer to “Operation and Maintenance Manual” of diesel engine for maintenance.
3.2 Every 50 Hours (Week) Service
Carry out the periodic maintenance of every 10 hours with this maintenance operation at the same
time.
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Check oil level of the gearbox, hydraulic oil tank and brake booster pump.
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Tighten all assembling bolts of transmission axles.
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Check whether all assembling bolts of hubs and brake caliper are loosened.
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Check all assembling bolts of teeth for tightening.
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Check and lubricate the accelerator control, parking brake and gearshift control system.
In addition, do the extra maintenance in the first 50 hours as follow:
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Check and clean the air vent of gearbox. Check and clean the filter cartridge of oil line system of
torque converter-gearbox.
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Check if there is leakage in the hydraulic system. Check and clean the air vent of hydraulic
reservoir. Check and clean the oil-return filter cartridge of hydraulic reservoir.
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Check if there is leakage in the brake system. Clean the filter mesh of oil bowl in the booster
pump. Clean the air vent and check the brake fluid. Add if deficient.
