93
CHECKING AND ADJUSTING THE UPPER WEAR PAD
1. Position the digger to full reach and 3/4 extension
of the extending dipperstick, but with the bucket
2 inches (50mm) off ground. Any wear will show
as a gap between the outer wear pad (3)
and the dipperstick. A maximum gap of .040 inch
(1 mm) is permitted at A.
2. If adjustment is necessary, release both bolts (6)
and remove the spacers (5) and the spare shims
(4).
3. Remove the cover plate (1) and the second set of
shims (2) which must be equally reduced in
thickness to compensate for the measured wear.
Use the spare shims removed at step 2 to obtain
the correct shim thickness.
4. Install the cover plate (1) the spare shims (4), the
spacers (5) and the bolts (6). Torque tighten the
bolts (6) to 500 ft lbs (670 Nm).
789M395A
6
5
4
1
2
3
1
3
A
1
3
1
5
4
2
3
6
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