9008-20
94
CHECKING AND ADJUSTING THE INTERNAL WEAR PADS
1. Remove the bucket, the bucket linkage and the
bucket cylinder from the external dipperstick.
2. Lower the boom and the dipperstick until they
are horizontal and extend the dipperstick 3/4 out.
3. Remove the external wear pads from the front
end of the dipperstick (top pad, bottom pad and
four side panels).
4. Extend the inner section (6) fully and remove the
circlips form the extension cylinder (5). Drive out
the pin with the soft metal bar.
5. Remove the bolts on the upper bearing (2), and
remove the spacers, the spare shims and the
retaining plate.
6. Support the inner section (6) by means of a chain
sling (1) and bars inserted throgh the bucket
ramm mounting hole (5) and the bucket pivot pin
hole (7). Slide the inner section out of the
dipperstick.
789M396A
7. Remove the wear pads (8) and (10) and the
shims (9) from the sides and the top, at the rear
of the dipperstick inner section.
8. With no shims, fit two new wear pads (10) into
each side of the inner section and measure the
width over the wear pad faces. This is dimension
A.
789M397A
9. Measure the internal width of dipperstick outer
section. This Dimension B. The thickness of the
shims (9) required = (Dim. B minus Dim. A)
minus .020 to .040 inch (0.5 to 1 mm.) Shims (9)
must be divided equally and placed under the
side wear pads (10). (.040 in (1mm) gap allowed)
A smear of heavy grease in them during will
help retain assembly.
10.Install a new, top rear, wear pad (8) over the two
studs and the spacers.
11. Install the inner section (4) in the dipperstick.
12. Align the cylinder rod eye and fit the pin and
circlip (5).
13. Assemble the top, bottom and side view pads.
(See page 18).
14. Install the bucket cylinder, the bucket linkage and
the bucket.
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