Komatsu WA500-6H, Operation & Maintenance Manual, Page: 318 / 412

4.9 Service procedure
Every 500 hours service
Maintenance
4-64
WA500-6H – VEAM430100
4.9.8 Every 500 hours service
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
WARNING
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: 45 liters (11.88 US gal)
z
Prepare a filter wrench
1. Stop the engine and wait for the temperature at all parts to
go down.
2. Open the engine side cover on the right side of the chassis.
3. Open oil filler (F).
4. Place a container to catch the oil under drain plug (P).
5. Loosen drain plug (P) and drain the oil. Be careful not to get
oil on yourself.
6. Check the drained oil, and if there are excessive metal parti-
cles or foreign material, please contact your KOMATSU dis-
tributor.
7. Tighten drain plug (P).
8. Using the filter wrench, turn filter cartridge (1) counterclock-
wise to remove it.
In particular, if this operation is carried out immediately after
stopping the engine, a large amount of oil will come out, so
wait for 10 minutes before starting the operation.
9. Clean the filter holder, fill the new filter cartridge with engine
oil, then coat the seal and thread of the filter cartridge 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.
GK050234
F
GK050235
P
GK050236
1