Komatsu PC220LC -8 Operation & Maintenance Manual page 225

MACHINE OPERATIONS AND CONTROLS
Inversion
1. Place the bucket in contact with a flat surface.
REMARK
When removing the pins, place the bucket so that it is in light
contact with the ground.
If the bucket is lowered strongly to the ground, the resistance will
be increased and it will be difficult to remove the pins.
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, be careful not to damage
them.
2. Remove the double nut on the stopper bolt for arm pin (A) and
link pin (B), remove the bolt, pull out arm pin (A) and link pin (B),
and then remove the bucket.
3. After removing the bucket, reverse it.
4. Align arm (5) with replacement bucket hole (1), then align link
(6) with hole (2), coat pins (A) and (B) with grease, and install.
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OPERATION