Manitowoc National Crane NBT40 Series Service Manual

BOOM MAINTENANCE NBT40 SERVICE MANUAL
4-42 Published 8-01-2017 Control # 287-11
3. Measure the thickness of the wear pads and record
(twp),
4. Subtract the outside width (W
o
) of the inner section and
the thickness of the two pads (twp) from the inside width
of the outer section (W
i
). Add shims as required (each
shim is 0.03 thick) to tighten the pads so that there is
0.00 - 0.06 clearance between the inner boom rear lower
wear pads and the most narrow part of the outer boom
when shims are installed.
Rear, Bottom Pads
1. With a tape measure, measure the inside height of the
outer section (H
i
) at the front and back of the boom and
record the smallest measurement. If the section has
cylinder anchor bars, take a measurement directly in
front of these bars.
2. With the tape measure, measure the outside height of
the inner section (H
o
) at bottom, rear pad location.
Record the largest measurement.
3. Measure the thickness of the top wear pads and record
(twp).
4. Subtract the largest outside height (H
o
) of the inner
section and the thickness of the top pad and lower pad
(twp) from the inside height of the outer section (H
i
). Add
shims as required (each shim is 0.06 thick) to tighten the
pads so that there is 0.06 - 0.12 clearance between the
widest part of the inner boom and the most narrow part
of the outer boom when shims and pads are installed.
FIGURE 4-18
OUTER SECTION
CYLINDER
ANCHOR
BARS
FIGURE 4-19
INNER SECTION
FIGURE 4-20
FIGURE 4-21
Reference Only

Manitowoc National Crane NBT40 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40 Series
Category	Construction Equipment
Language	English