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MAINTENANCE
EVERY 500 HOURS SERVICE
Maintenance for every 250 hours service should be carried out at the same time.
CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE
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.
Refill capacity: 38 liters (10.04 US gal)
Prepare a filter wrench
1. Remove drain plug (1), then install the standard drain hose.
2. Set a container in position to catch the oil, then loosen drain the
valve (2) slowly to avoid getting oil on yourself, and drain the
oil. Be careful not to loosen drain valve (2) too much. This will
deform the stopper pin inside the valve.
3. Check the drained oil, and if there are excessive metal
particles or foreign material, please contact your Komatsu
distributor.
4. Remove the drain hose, then tighten drain valve (2) and drain
plug (1).
Tightening torque
Drain plug (1), drain valve (2): 68.6 ± 9.8Nm
5. Using the filter wrench, turn filter cartridge (3) to the left and
remove it. When doing this, do not carry out the operation from
immediately below and be careful not to get oil over yourself. In
particular, immediately after the engine is stopped, a large
amount of oil may come out, so wait for about 10 minutes
before starting the operation.
6. 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.
7. When installing the filter cartridge, tighten until the packing face is in contact with the filter holder, then tighten
a further 3/4 - 1 turn.
8. Pour in the specified amount of engine oil from oil filler (F).
9. Run the engine for a short time at idle, then check the oil if it is filled up to a specified level. For details, see
"CHECK OIL LEVEL IN ENGINE OIL PAN, ADD OIL (PAGE 3-73)".
WARNING
(7 ± 1 kgm, 50.6 ± 7.2 lbft)
SERVICE PROCEDURE
4 - 55
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