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MAINTENANCE
EVERY 250 HOURS MAINTENANCE
CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER
CARTRIDGE
The parts and oil are at high temperature immediately after the engine is stopped, and may cause serious
burns. Wait for the temperature to go down before starting the operation.
Container to catch drained oil: Minimum 4 liters (1.06 US gal) capacity
Refill capacity: 3 liters (0.79 US gal)
Filter wrench
1.
Set a container to catch the oil immediately under the
drain plug (P) at the bottom of the machine.
2.
Remove drain plug (P) slowly to avoid getting oil on your-
self, and drain the oil.
3.
Check the drained oil, and if there are excessive metal
particles or foreign material, contact your Komatsu dis-
tributor.
4.
Install drain plug (P).
5.
Using a filter wrench, turn filter cartridge (1) counterclock-
wise to remove it.
A large amount of oil will come out if this procedure is
carried out immediately after stopping the engine, so wait
for 10 minutes before starting the maintenance.
6.
Clean the filter holder, fill the new filter cartridge with
clean engine oil, coat the thread and packing surface of
the new filter cartridge with clean engine oil (or coat it
thinly with grease), then install it to the filter holder.
REMARK
Confirm that no remnants of old packing still adhere to the filter holder as this may result in oil leakage.
Check that there is no old packing affixed to the filter holder. If there is any old packing affixed to the filter, it will
cause leakage of oil.
7.
When installing; tighten until the packing surface contacts the seal surface of the filter holder, then tighten it
up 1/2 to 3/4 of a turn.
8.
After replacing the filter cartridge, add engine oil through oil filler (F) until the oil level is between the H and L
marks on the dipstick (G).
9.
Run the engine idle for a while, then stop the engine and confirm that the oil level is between the H and L
lines according to "CHECK OIL LEVEL IN ENGINE OIL PAN, ADD OIL (PAGE 3-23)".
WARNING
MAINTENANCE PROCEDURE
4-43
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