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Maintenance Section
7. Measure clearances (4) between the rear wear
pads and the top of the boom sections.
8. The clearance at each location must not exceed 1.5
mm (0.06 inch). If the clearances are excessive,
adjustments must be made.
Adjustment
Note: The bolts that secure different wear pads are not
identical lengths. Do not mix the bolts. Clean all used
bolts. Before installation, apply thread lock compound to
bolts that secure wear pads.
Illustration 196 g00858058
1. Loosen bolts (5) that secure the rear top wear
pads. Install sufficient shims in order to reduce the
clearance to 0.75 mm (0.030 inch). Apply 9S-3263
Thread Lock Compound to the bolts. Tighten the
bolts to a torque of 75 ± 5 Nm (55 ± 4 lb ft).
2. Remove bolts (6) that secure the rear side wear
pads. Install sufficient shims in order to reduce the
clearance to 0.75 mm (0.030 inch) at each side.
Install sufficient shims in order to produce an equal
clearance between the boom sections at each side.
It may be necessary to install more shims
Illustration 197 g00857793
3. Raise the boom sufficiently above the stand. Fully
extend the boom and lower the boom to the
horizontal position. Support the boom under the
third section.
Illustration 198 g00865469
4. Remove bolts (7) that secure the bottom wear
pads. Install sufficient shims in order to reduce the
clearance to 0.75 mm (0.030 inch). Apply 9S-3263
Thread Lock Compound to the bolts. Tighten the
bolts to a torque of 75 ± 5 Nm (55 ± 4 lb ft).
Illustration 199 g00865472
5. Remove bolts (8) that secure the side wear pads.
Install sufficient shims in order to reduce the
clearance to 0.75 mm (0.030 inch) at each side.
Install sufficient shims in order to produce an equal
clearance between the wear pads and the boom
sections at each side. It may be necessary to
install more shims at one side than the other side.
Apply 9S-3263 Thread Lock Compound to the
bolts. Tighten the bolts to a torque of 75 ± 5 Nm
(55 ± 4 lb ft).
6. Fully extend and retract the boom at angles of 0
degrees, 45 degrees and 70 degrees. The boom
operation must be smooth. If the boom operation is
not smooth, operate the boom with a load of 500
kg (1100 lb) on the attachment. Fully extend the
boom and retract the boom at an angle of 45
degrees. Repeat ten times.