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Maintenance Section
Boom Wear Pad Clearance -
Inspect/Adjust
The clearance between the wear pads and the boom
section should be checked at more frequent intervals
when the machine is operated in severe conditions.
Note: Sand or grit particles can cause accelerated wear
to the wear pads.
1. Park the machine in a clear area on level ground
and chock the wheels.
The boom can fall if a control is moved or if a hydraulic
component fails. This can cause personal injury or
death. Support the boom with stands. Do not rely on the
cylinder to hold the boom up.
Illustration 192 g01014390
2. Raise the boom to the horizontal position and fully
extend the boom. Install a suitable stand under the
first section in order to prevent the boom from
falling unexpectedly. Do not support the second
and third sections. To properly support the boom,
use the following tools:
Table 20
Stop the engine.
Illustration 193 g00857783
3. Measure clearances (1) between the wear pads
and the side of the boom sections at each side.
4. Measure clearances (2) between the wear pads
and the top of the boom sections.
5. Raise the boom and remove the stand. Fully
retract the boom and support the boom in the
horizontal position. In order to support the boom,
install the stand under the third section or install
cribbing under the quick coupler.
Illustration 194 g00857785
6. Remove the cover from the rear of the chassis and
measure clearances (3) between the rear wear
pads and the side of the boom sections at each
side.
Illustration 195 g00857804
Required Tools
Part Number Description Quantity
8S-7641 Tube 1
4C-6486 Stand 1
8S-7615 Pin 1
8S-7625 Collar 1
8S-8048 Saddle 1