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
9803/3280
Section B
25 - 2
Issue 1
Service Procedures
S148121
C
G
G
D
A
A
H
J
