4.8 Service procedure Every 2000 hours service Maintenance 4.8.9 Every 2000 hours service Maintenance for every 50, 100, 250, 500 and 1000 hours service should be carried out at the same time. Change oil in hydraulic tank, replace hydraulic filter element z The parts and oil are at high temperature after the engine is stopped, and may cause burns. Wait for the temperature to go down before starting the work. z When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it. z Refill capacity: 47 liters (12.42 US gal) 1. Lower the bucket horizontally to the ground and apply the parking brake, then stop the engine. 2. Remove covers (1) and (2). 1 3 F 3.
Keep grip (3) pulled, then turn oil filler cap (F) counterclock- wise and remove it. 4. Set a container to catch the oil under drain plug (P). 5. Loosen drain plug (P), drain the oil, then tighten drain plug (P) again. 6. After draining the oil, close drain valve (4) and install drain plug (P). 7. Using a filter wrench, turn cartridge (4) to the left to remove it. 8. Clean the filter holder, fill the new filter cartridge with oil, then coat the seal and thread of the filter cartridge with oil (or coat thinly with grease) and install. P G 4 2 GK020036 When installing the seal, tighten it until its surface comes to contact with the filter holder, then tighten it 1/3 turn more. 9.
Refill the specified quantity of oil through oil filler (F). 10. Check that the hydraulic oil is at the specified level. For details, see "Check oil level in hydraulic tank, add oil (4-42)". 11. Run the engine at low idling, and extend and retract the steering, bucket, and lift arm cylinders 4 to 5 times. Be care- ful not to operate the cylinder to the end of its stroke (stop approx.100 mm (3.9 in) before the end of stroke). NOTE If the engine is run immediately at high speed or the cylin- der is operated to the end of its stroke, the air inside the cyl- inder will cause damage to the piston packing. 4-60 WA150-5H – VEAM934100 WARNING WARNING