Loader Periodic Maintenance Manual

[DIG-DOG]

1. Maintenance every 50 working hours

(1) Tighten the front and rear drive shaft connecting bolts.

(2) Check the transmission oil level.

(3) Check the brake booster oil level.

(4) Check the tire pressure and damage.

(5) Inject grease into the front and rear frame hinge points, drive shaft, auxiliary frame pins, and other bearings.

(6) Check the air filter and replace if necessary.

2. Maintenance every 100 working hours

(1) Clean the dust and materials on the engine cylinder head, torque converter, and oil cooler.

(2) Check the battery fluid level and apply a thin layer of butter on the joints.

3. Maintenance every 250 working hours

(1) Check the wheel rim fixing bolts.

(2) Check the front and rear axle oil levels.

(3) Check the working device, front and rear frames, auxiliary frames, and the load-bearing welds and fixing bolts for cracks and looseness.
(4) Replace the engine oil (depending on the quality of the engine oil).
(5) Check the tightness and damage of the engine generator fan belt.
(6) Check and adjust the braking condition of the foot brake.
(7) Add grease to the fan pulley, tensioner and water pump.
(8) Tighten the engine cylinder head bolts, check and adjust the valve clearance.
4. Maintenance every 500 working hours
(1) Tighten the front and rear axle and frame connection bolts
(2) The engine oil and oil filter must be replaced.
(3) Clean and replace the transmission oil and oil filter.
(4) Check and adjust the engine valve clearance.
(5) Clean the diesel tank and oil suction filter.
(6) Disassemble and maintain the motor and generator.
5. Maintenance every 1000 working hours
(1) Replace the transmission oil and oil filter.
(2) Check the tightness of the engine intake and exhaust pipes.
(3) Replace the return oil filter of the hydraulic oil tank.
6. Maintenance every 2000 working hours
(1) Replace the front and rear axle gear oil.
(2) Replace the hydraulic oil and oil suction filter and clean the oil tank.
(3) Check the working condition of the foot brake and parking brake.
(4) Clean and replace the brake booster brake oil, and check the sealing and brake sensitivity.
(5) Check the flexibility of the steering system.
(6) Check the natural settlement of the boom and bucket cylinders and the sealing of the distribution valve working cylinder.

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