Komatsu PC78US-6 Operation & Maintenance Manual page 152

OPERATION
MACHINE OPERATIONS AND CONTROLS
Inversion
When reversing a bucket, there is the danger that the bucket tooth tip
overruns the normal trajectory and interferes with the cab, thus causing a
serious trouble. Pay good attention to the work when reversing a bucket so
that the bucket and the cab may not interfere with each other.
REMARK
NOTICE
After removing the pins, make sure that mud or sand does not get on them.
Dust seals are fitted at both ends of the bushings, so be careful not to
damage them.
REMARK
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