EVERY 500 HOURS MAINTENANCE
Maintenance for every 100 and 250 hours should be performed at the same time.
METHOD
FOR CHANGING OIL IN ENGINE OIL PAN, REPLACING ENGINE OIL
FILTER CARTRIDGE
WARNING
Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn injury.
W
ait for the temperature to go down, and then start the work.
Refill capacity of oil pan: 7.5 ℓ {1.98 U.S.Gal} 
Items to be prepared
•
Container to catch drained oil
• Filter wrench
1.
Place the oil container under the drain plug (P) to catch the
drained oil.
2.
Remove the drain plug (P) slowly to drain the oil so that
you do not get splashed with the oil.
3.
Check the drained oil.
If there are excessive metal powder or foreign material,
contact your Komatsu distributor.
4.
Install the drain plug (P).
5.
Pull the engine rear cover (1) backward to open it.
Open
the engine rear cover (1) fully and it is secured by
rod (2).
6.
Turn the engine oil filter cartridge (3) counterclockwise by
using the filter wrench, and remove it.
7.
Clean the mounting face of engine oil filter cartridge.
REMARK
Check
that the old packing does not stick to the mounting
face of engine oil filter cartridge. If there is any old packing
stuck to the filter, it will cause oil leakage.
8.
When installing the new engine oil filter cartridge, apply
clean
engine oil (or thin film of grease) to its packing and
thread part.
When installing, bring the packing surface into contact with the seal surface of engine oil filter cartridge,
then tighten it a further 1/2 to 3/4 turns.
MAINTENANCE MAINTENANCE PROCEDURE
4-69
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