SERVICE PROCEDURE MAINTENANCE
4-48
EVERY 500 HOURS SERVICE 4
Maintenance for every 50, 100 and 250 hours service should be carried out at the same time.
CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE 4
WARNING
q 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.
q When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
q Refill capacity: 19.5 liters (5.15 US gal)
q Filter wrench
1. Open the engine side cover on the right side of the chassis.
2. Open oil filler (F).
3. Place a container to catch the oil under drain plug (P).
4. Loosen drain plug (P) and drain the oil. Be careful not to
get oil on yourself.
5. Check the drained oil, and if there are excessive metal par-
ticles or foreign material, please contact your Komatsu dis-
tributor.
6. Tighten drain plug (P).
7. Open the engine side cover on the left side of the chassis.
8. Using the filter wrench, turn filter cartridge (1) counter-
clockwise to remove it.
9. Clean the filter holder, fill the new filter cartridge with
engine oil, then coat the seal and thread of the filter car-
tridge with engine oil (or coat thinly with grease) and install.
10. When installing the seal, tighten it so its surface comes into
contact with the filter holder, then tighten another 3/4 turn.
11. After replacing the filter cartridge, add oil through oil filler
(F) until the oil level is between the H and L marks on the
dipstick (G).
12. Run the engine at idling for short time, then stop the
engine, and check that the oil is between the H and L
marks on the dipstick. For details, see “CHECK OIL LEVEL
IN ENGINE OIL PAN, ADD OIL (3-57)“.
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