Komatsu Utility 69001, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
4-65
EVERY 2000 HOURS SERVICE 4
Maintenance for every 50, 250, 500 and 1000 hours service should be carried out at the same time.
CHANGE OIL IN HYDRAULIC TANK, REPLACE OIL FILTER ELEMENT 4
WARNING
q
The parts and oil are at high temperature immediately after the engine is stopped, and may cause
burns. Wait for the temperature to go down before starting the work.
q
When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
q
Refill capacity: 55 liters
1. Lower the work equipment to the ground, then stop the
engine.
2. Turn the cap of oil filler (F) slowly to release the internal
pressure, then remove the cap.
3. Remove the cover (1) at the bottom of the hydraulic tank.
4. Loosen drain valve (2), drain the oil, tighten drain valve (2)
again, then install cover (1). When loosening drain valve
(2), be careful not to get oil on yourself.
5. Remove bolt (3), then remove cover (4).
6. Take out spring (5), valve (6), and element (7).
7. Clean the inside of the case, then wash spring (5) and
valve (6).
8. Install new element (7), valve (6), and spring (5).
9. Install cover (4) with bolt (3).
10. Refill the specified quantity of oil through oil filler (F).
11. Check that the oil is at the specified level. For details, see
“CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL (4-
47)“.