Komatsu PC138US-11 Operation & Maintenance Manual page 260

MACHINE OPERATIONS AND CONTROLS
REMARK
• Perform installation in the reverse order to removal.
• Fit O-ring (3) to arm (5) as shown in the figure since it
is damaged easily when bucket (4) is installed.
After inserting the pin, fit it in the regular groove.
7.
Install the lock bolt and nut of each pin.
8.
Apply grease to each pin.
REMARK
• Lubricate with grease thoroughly until the grease comes out from the end faces.
• When replacing the bucket, replace the dust seal with a new one if it is damaged. If a damaged one is
used without being replaced, sand and dirt may enter the part of pin and cause abnormal wear of the
pin.
METHOD FOR INVERTING BUCKET
k
When reversing a bucket, there is the danger that the
bucket tooth tip overruns the normal trajectory and inter-
feres 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.
1.
Lower the bucket to the flat ground.
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 re-
move 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 of stopper bolt at arm pin (A) and
link pin (B), then pull out the bolts.
3.
Pull out arm pin (A) and link pin (B), then remove the buck-
et.
3-190
WARNING
WENAM00111
OPERATION