Manitowoc National Crane NBT40 Series Service Manual

OUTRIGGERS NBT40 SERVICE MANUAL
7-8 Published 8-01-2017 Control # 287-11
Top And Bottom Pads
1. With a pair of inside/outside calipers, measure the inside
height of the outer section (Hi, Figure 7-11) three ft from
the front of the section and record.
2. With the inside/outside calipers, measure the outside
height of the inner section (Ho, Figure 7-12) at the rear
of the section from the top plate to the bottom of the
bottom pads and record.
3. Measure the thickness of the top wear pads that attach
to the inner section and record (t
wp,
Figure 7-13).
4. Subtract the outside height (H
o,
Figure 7-12) of the inner
section and the thickness of the top pads (t
wp,
Figure 7-13) from the inside height (H
i,
Figure 7-11)of
the outer section. Add shims as required (each shim is
0.03 or 0.06 thick) to tighten the pads so that there is
0.003 - 0.006 clearance between the widest part of the
inner outrigger and the most narrow part of the outer
outrigger when shims and pads are installed. See
example.
5. Install the inner outrigger section into the outer outrigger
section. Nominal front bottom pad and shim thickness
0.75 in, which should allow the inner outrigger section to
extend parallel with the outer outrigger section. If
adjustment is necessary, raise the inner section
outrigger up and adjust the lower front shims to level the
outrigger section extension. Shim the top front wear
pads as required to provide 0.03 - 0.09 total section
clearance.
6. Repeat procedure when installing 1st/2nd outriggers
into outrigger boxes on subbase.
OUTRIGGER MONITORING SYSTEM (OMS)
(OPTIONAL—STANDARD IN NORTH
AMERICA)
The Outrigger Monitoring System (OMS) aids the operator in
accurately programming the Rated Capacity Limiter (RCL)
by automatically identifying the position of each outrigger
beam. The OMS uses four string potentiometers, one string
potentiometer (1, Figure 7-14) in each outrigger beam, to
identify if an outrigger beam is positioned to one of three pre-
defined locations, including fully retracted, mid-extend, and
fully extended.
OUTER SECTION
FIGURE 7-11
INNER SECTION
FIGURE 7-12
FIGURE 7-13
FIGURE 7-14
1
7951
Reference Only

Manitowoc National Crane NBT40 Series Specifications

General

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