BOOM RT540E SERVICE MANUAL
4-36 Published 4-20-2015, Control # 502-01
BOOM MAINTENANCE
Functional Test Of The Boom
1. Activate the hydraulic system and check for proper
operation and any leaks.
2. Ensure the boom will extend and retract properly.
3. Ensure the lift cylinder will not allow the boom to drift
down until the operator lowers it.
4. Ensure all electrical components disconnected during
removal are operating properly.
Boom Inspection
Do not attempt to work on the boom without experienced
supervision.
1. Visually inspect telescoping sections for adequate
lubrication of all wear surfaces.
2. Observe extended sections for evidence of cracks,
warping, or other damage.
3. Periodically check security of boom wear pads.
4. Check boom nose sheaves for security and freedom of
movement.
Boom Alignment And Servicing
Do not attempt to work on the boom without experienced
supervision.
Boom alignment is achieved by adjustment of the wear pads
located at various points in the boom assembly. Adjustment
of the wear pads is as follows:
1. Fully extend the boom horizontally.
2. Lubricate the boom bottom plates (sides and bottom).
3. Shim the front lower side wear pads to within 1.52 mm
(0.06 in) from side plate of next inner boom section, then
shim the front upper wear pads in the same manner. Use
equal number of shims on each side.
4. Retract and extend the boom; check for the high point
where the boom has brushed the wear pads at the
widest point.
5. Retract the boom sections to align the high point on the
boom section with the adjacent wear pads.
6. Add or subtract shims as necessary.
Table 4-2
7. Attach a weight and extend the boom full length. Check
for side deflection.
DANGER
To prevent serious injury or death, always wear personal
protective equipment; i.e., a hard hat, eye protection,
gloves and metatarsal boots.
DANGER
To prevent serious injury or death, always wear personal
protective equipment; i.e., a hard hat, eye protection,
gloves and metatarsal boots.
CAUTION
When extending and retracting the boom during
alignment, movement should be stopped if a restriction is
encountered. re-shim wear pads as necessary to provide
free travel of the affected boom section(s).
Example
If the boom deflects to the left:
1 The forward left wear pad would be shimmed in.
2
The rear left adjustable wear pad would be
adjusted out, away from the internal boom
section.
3 The forward right wear pad will be shimmed out.
4 The right rear adjustable pad adjusted in
Reference Only
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