Change Oil In Engine Oil Pan, Replace Engine Oil Filter Cartridge - Komatsu PC18MR-3 Operation & Maintenance Manual

MAINTENANCE PROCEDURE

CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER CARTRIDGE

Parts and oil are at high temperature immediately after the engine is stopped and may cause serious burns. Wait for the oil
temperature to go down before performing this operation.
Engine oil pan capacity: 3.3 liters (0.87 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.
(For details, see "ENGINE REAR COVER (PAGE 3-20)".)
6. Using a filter wrench, turn filter cartridge (1) counterclockwise
to remove it.
7. 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 stuck to the filter holder. If there
is any old packing stuck to the filter, it will cause leakage of oil.
8. 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.
9. 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).
10. 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 3-34)".
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WARNING
MAINTENANCE