Komatsu PC78US-6 Operation & Maintenance Manual page 230
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Also See for PC78US-6:
- Operation & maintenance manual (287 pages) ,
- Shop manual (51 pages)
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MAINTENANCE
MAINTENANCE PROCEDURE
NOTICE
If the engine is run at high speed immediately after startup or a cylinder is pushed up to its stroke end, air taken inside the cylinder
may cause damage to the piston packing.
NOTICE
If the air is not bled from the swing motor, the motor bearings may be damaged.
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