Swing Machinery Case Oil - Change - Komatsu PC78US-6 Operation & Maintenance Manual

MAINTENANCE PROCEDURE

Swing Machinery Case Oil - Change

The parts and oil are at high temperature after the engine is stopped, and may cause serious burns. Wait for the temperature to
go down before starting the operation.
Refill capacity: 2.0 liters (0.53 US gal)
1. Set a container to catch the oil immediately under the drain
plug (P) at the bottom of the machine.
2. Loosen drain plug (P) on the machine underside to drain oil,
and tighten it again after the draining.
Tightening torque of drain plug (P) is 44 to 93 N m (4.5 to 9.5
Kgf m, 32.5 to 68.7 lbft).
3. Loosen bolt (1) and slide cover (2).
4. Add the specified amount of engine oil through dipstick (G)
insert port.
5. Wipe off oil on the dipstick (G) with cloth.
6. Insert dipstick (G) fully in the oil filler pipe, then take it out again.
7. The oil should be between the H and L marks on dipstick (G).
If the oil is below the L mark, add engine oil through the dipstick
insertion port.
8. If the oil is above the H mark, drain the excess engine oil from
drain plug (P), and check the oil level again.
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MAINTENANCE