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MAINTENANCE PROCEDURE
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.
Refill capacity: 7.4 liters (1.96 US gal)
Prepare a filter wrench
Change the oil and replace the cartridge once every 6 months, even if the engine has not been operated for 500
hours.
In the same way, change the oil and replace the cartridge once every 500 hours, even if the engine has not been
operated for 6 months.
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 yourself,
and drain the oil.
3. Check the drained oil, and if there are excessive metal
particles or foreign material, please contact your Komatsu
distributor.
4. Install drain plug (P).
5. Open the engine rear cover.
6. Set a container to catch the oil coming from the drain hose
leading from the tray under the filter cartridge.
7. Using a filter wrench, turn filter cartridge (1) counterclockwise
to remove it.
8. Clean the filter holder, coat the new filter cartridge packing and
threaded portion with clean oil (or coat thinly with grease), then
install.
REMARK
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.
9. 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.
10. After replacing the filter cartridge, add oil through oil filler (F) until the oil level is between the H and L marks on
the dipstick (G).
11. 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 3-43)".
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WARNING
MAINTENANCE
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