Komatsu PW118MR-11 Operation & Maintenance Manual page 284

MACHINE OPERATIONS AND CONTROLS
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.
4.
Invert the removed bucket.
5.
Align arm (5) with mounting hole (1) of link (6).
6.
Align link (6) with mounting hole (2) of arm (5).
7.
Insert grease-coated pins (A) and (B) into hole (1) and
hole (2) respectively.
REMARK
Fit O-ring (3) to mounting portion (1) of arm (5) and bucket
(4).
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.
8.
Install the lock bolt and nut of each pin.
9.
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 seal is
used without being replaced, sand and dirt may enter the pin portion and cause abnormal wear of the
pin.
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OPERATION