Swing Circle - Lubricate - Komatsu PC78US-6 Operation & Maintenance Manual

MAINTENANCE PROCEDURE MAINTENANCE PROCEDURE
5. Remove two oil cooler securing bolts (5) on the upper side and
bracket (6).
6. Loosen two oil cooler securing bolts (7) on the lower side.
7. Tilt oil cooler (8) to create some space between oil cooler (8)
and radiator (9).
8. Apply compressed air to radiator fin (9), oil cooler fin (5) and
condenser fin (4) to blow off the clogged dirt, dust and shreds
of dry leaves. Steam or water may be used instead of
compressed air.
9. Detach machine undercover (10) and sweep out the dirt, dust
and shreds of dry leaves fallen on the bottom.
10. Check the rubber hose. Replace with a new one if the hose is found to have cracks or to be hardened by ageing.
Further, check hose clamps for looseness.
11. Install all the detached parts again as originally installed.

Swing Circle - Lubricate

1. Lower the work equipment to the ground.
2. Using a grease gun, pump in grease through the grease fittings
shown by arrows. (2 points)
3. After greasing, wipe off any old grease that was pushed out.
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MAINTENANCE MAINTENANCE