Inversion - Komatsu PC450-8 Operation & Maintenance Manual

OPERATION
REMARK
When installing the bucket, for arm pin portion (A), fit O-ring (3)
to bucket (4) in the position shown in the diagram on the right.
After inserting the pin, fit it in the standard groove.
For link pin portion (B), install the bucket with O-ring (3) fitted in
the standard groove.
4. Install the stopper bolts and nuts for each pin, then grease
the pin.
REMARK
Lubricate with grease thoroughly until the grease comes out
from the end face.
When replacing the bucket, replace the dust seal if it has been
damaged. If a damaged seal is used without being replaced,
sand and dirt may enter the pin portion and cause abnormal
wear of the pin.

Inversion

NOTICE
The rock bucket (PC 400: if equipped, PC 450: standard)
interferes with the arm, so it cannot be reversed to carry
out excavation to the front.
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.
MACHINE OPERATIONS AND CONTROLS
3
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