Komatsu PC138US-11 Operation & Maintenance Manual page 365

Hydraulic excavator
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MAINTENANCE
METHOD FOR CHANGING OIL IN ENGINE OIL PAN, REPLACING ENGINE OIL
FILTER CARTRIDGE
Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury.
Wait for the temperature to go down, and then start the work.
Refill capacity of oil pan: 11.5 ℓ
Items to be prepared
Filter wrench
Container to receive the oil
REMARK
When changing the oil filter, always replace the fuel prefilter at the same time.
1.
Remove the undercover (1) at the bottom of the machine.
2.
Place the oil container to receive the oil under drain plug
(P).
3.
Loosen drain plug (P) to drain oil. Do it slowly so that you
do not get splashed with drained oil.
4.
Tighten the drain plug (P).
5.
Open the fuel filter inspection cover on the right side of the
machine.
6.
Turn the filter cartridge (2) counterclockwise by using the
filter wrench, and remove it.
7.
Clean the filter head.
REMARK
Check that there is no old packing stuck to the filter holder.
If there is any old packing stuck to the filter, it will cause oil
leakage.
8.
When installing the new filter cartridge, apply clean engine
oil (or grease) to its packing and thread portion.
When installing the cartridge, tighten it until the packing
surface contacts the seal surface of the filter holder, then tighten it 1/2 or more turns.
WARNING
k
WENAM00111
MAINTENANCE PROCEDURE
4-49

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