25 - 2
Extending Dipper
- Wear Pad Adjustment (Cont’d)
Adjusting the Bottom Wear Pads
1 Park the machine on level ground. Engage the parking
brake and put the transmission in neutral.
2 Support the boom and dipper as shown at C.
3 Stop the engine.
4 Clean the sliding faces of the inner dipper with a
suitable solvent.
5 Start the engine. Retract the Extradig dipper D. Make
sure that the bucket is clear of the ground and the
dipper is supported.
6 Stop the engine.
7 With grease, mud etc. removed from the sliding faces
visually check the gap between inner dipper and top
wear pad A, as shown at G. The gap should be no
greater than 1.5 mm (
1
/16 in).
If the gap is greater than
1
/16 in (1.5 mm) then adjust as
follows:
a Remove one adjusting bolt H and discard one
washer J.
b Refit and tighten bolt H.
c Repeat the procedure for the remaining 3 adjusting
bolts H on the same side of the dipper.
d Visually re-check the gap is no greater than 1.5 mm
(1/16 in) as shown at G, if necessary repeat steps a
to c for the other 4 bolts H on the opposite side of
the dipper.
e Make sure that the inner dipper seats central to the
sides of the outer dipper.
Note: Remember to alternate sides each time an adjustment
is made.
Note: When all the adjusting washers J have been removed
and the clearance is greater than 1.5 mm (
1
/16 in), then wear
pads A and B must be replaced as a set and fitted by a
qualified service engineer.
When the adjustments have been completed, apply Waxoyl
to the runners of the inner dipper.
Section B Body and Framework
9803/3280
Section B
25 - 2
Issue 1
Service Procedures
S148121
C
G
G
D
A A
H
J
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