9008-18
92
CHECKING AND ADJUSTING THE EXTERNAL WEAR PADS
Check and adjust the top and
bottom bearing pads
1. Position the dipperstick so that the inner section
is extended approximately 12 inches (300 mm) and
is resting on the bottom bearing pad (11).
2. Remove the eight bolts (1), the spacers (13) and
the top plate (2).
3. Slide out the old bearing pad (12) and replace it
with a new one.
4. Install the plate (2), the spacers (13) and the
bolts (1). Torque the bolts (1) to 100 ft lbs (140 Nm).
5. Lower the dipperstick until the bucket contacts
the ground so that the inner telescopic section is
pressed against the top bearing pad.
6. Remove the three bolts (9) and the retainer plate
(8).
7. Remove the bottom bearing pad (11) and shims
(10).
8. Install a new bearing pad (11) and adjust the
shim thickness to give a maximum gap of less
than 1 mm.
NOTE :
Shims (10) = .020 in (0,5 mm), .040 in (1mm),
.080 in (2 mm) and .160 in (4 mm) thickness.
9. Install the retainer plate (8) and torque tighten
the bolts (9) to 100 ft lbs (140 Nm).
Check and adjust the side wear
pads
1. Remove the bolts (5), the housings (6), the shims
(3) and (4) and the bearing pads (7).
2. Assemble a 1 mm shim (4), a 2 mm shim (3) and
a new bearing pad (7) in the two housings (6).
3. Assemble the housings (6) on one side of the
dipperstick housing with the bolts (5).
4. Push the inner section hard against the bearing
pads just fitted.
5. Install two new bearing pads into the remaining
housings (6).
6. Install the housings (6) to the opposite side of the
outer section. Install and partially tighten the
bolts (5).
7. Measure the clearance between the inner
section and the bearing pads.
8. Remove the housings assembled in step 14 and
add shims (3) and (4) behind the bearing pads
(7) to achieve a total clearance between the
bearing pads and the inner section of less than
1 mm.
NOTE :
Use the thickest shims available and put the
thin shim in the housing (6). Shims are .040 in (1mm),
or .080 in (2 mm) thickness.
9.Install and torque bolts (5) to 45 ft lbs (60 Nm).
CS99F504
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13
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12
1
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