Manitowoc Published 06-24-16, Control # 241-01 4-77
2250 OPERATOR MANUAL SETUP AND INSTALLATION
Boom Installation
General
Before starting to assemble the boom, determine the
following:
• Is intermediate suspension required for the selected
boom length? If so, the intermediate suspension
links must be installed at the proper location
between the boom inserts. See Figure 4-47
, 4-48,
and 4-49
for the installation location.
• Will a fixed jib be installed? If so, the backstay
pendant links must be installed at the proper
location between inserts (#44 Heavy Lift only). See
the Jib Assembly drawing for the installation
location.
NOTE: Backstay pendant links are identical to the
intermediate suspension links.
The boom inserts are equipped with plastic wire rope guards
that are installed at the factory. Do not overtighten the
mounting screws. Guards must be free to slide in the
mounting slots to allow for thermal expansion and
contraction of the plastic.
Read all the notes on the Boom Rigging Assembly drawing.
NOTE: The shortest inserts must be installed next to the
boom butt.
Assemble Boom Sections
See Figure 4-43 for the following information and procedure.
The boom sections have FACTâ„¢ connectors:
• The top connectors are joined by fixed vertical pins that
hook into holes in the adjacent section (see View E).
• The bottom connectors are joined by removable
horizontal pins (see View E).
1. Assemble boom inserts in the proper sequence, as
follows, starting at the butt end of the boom.
a. Place the first insert on blocking at least 152 mm (6
in) high.
b. Lift the next insert into position and engage the top
connector holes with the fixed vertical pins (1,
View E).
c. Lower the insert until the bottom connector holes
are aligned and install the removable horizontal pins
(2, View E).
d. Block under the bottom chords at the top end of the
insert.
2. If your boom length requires intermediate suspension,
install the intermediate suspension link on the top end of
the required insert as follows. See Figure 4-47
and 4-49
for intermediate suspension requirements.
a. Lift the intermediate suspension link into position on
either side of the insert.
The lug at the bottom connecting hole in the link
must be facing toward the outside of the boom (see
View D).
b. Engage the hole in the link with the washer (3, View
D) on the underside of the insert connector.
c. Install the retaining pin (4, View D) through the holes
on the butt side of the link to prevent the link from
falling off the insert.
d. Repeat step 2
a through step 2c for the link on the
other side of the insert.
e. Proceed to install the next boom insert (repeat step
1b through step 1d). Replace the standard
horizontal connecting pin with the 275 mm (10-27/
32 in) long pin (5, View D) supplied with the link.
NOTE: The above procedure is identical for installing the
pendant links required for the fixed jib installation
on the #44 heavy lift boom.
3. Repeat step 1
b through step 1d until all inserts are
installed.
• Make sure that light insert(s) are installed next to the
boom top for a heavy lift boom or next to the tapered
insert for the long reach boom.
• For the long reach boom, the tapered insert must be
installed next to the boom top.
4. Install the boom top, heavy lift, or long reach boom, in
the same manner that the inserts were installed.
Connect Boom Straps
The boom straps are shipped from the factory in the stored
position on the inserts. Connect the straps, as follows.
See Figure 4-43
for the following procedure.
1. Remove the strap storage pin (6, View A) retaining links
and strap them to the strap bracket.
2. Store the strap storage pin (6, View A) in the bottom hole
in the strap bracket.
3. Rotate the strap links forward and pin them to the
adjacent strap (see View B).
WARNING
Collapsing Boom Hazard!
Avoid possible injury. Do not stand on, inside, or under the
boom sections during assembly. Always stand outside of
boom sections when installing the connecting pins.
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