Bucket Replacement And Inversion; Replacement - Komatsu PC450-8 Operation & Maintenance Manual

MACHINE OPERATIONS AND CONTROLS

BUCKET REPLACEMENT AND INVERSION

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When pins are knocked in with a hammer, pieces of metal may fly and cause serious injury.
When carrying out this operation, always wear goggles, hard hat, gloves, and other protective equip-
ment.
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When the bucket is removed, place it in a stable condition.
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If pins are hit with a strong force, there is a hazard that the pin may fly out and injure people in the sur-
rounding area. Make sure that there is no one in the surrounding area before starting the operation.
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When removing the pins, do not stand behind the bucket. In addition, be extremely careful not to put
your foot under the bucket while standing at the side for the work.
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When removing or inserting pins, be extremely careful not to get your fingers caught.
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Never insert your fingers into the pin holes when aligning the holes.
Stop the machine on a firm and flat surface and do the work. When performing joint work, appoint a lead and follow
that person's instructions and signals.

Replacement

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. Align the arm (5) with holes (1) of the replacement bucket
and the link (6) with holes (2), then insert grease-coated
pins (A) and (B) into hole (1) and hole (2) respectively.
3-164
WARNING
OPERATION
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