Manitowoc Published 11-20-19, Control # 234-19 4-79
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
BOOM #500 ASSEMBLY
Assemble the boom in the exact sequence shown in the
Boom Rigging Drawing at the end of this section.
Some boom lengths require intermediate suspension. To
determine the correct installation position of the insert with
intermediate suspension, see the Boom Rigging Drawing at
the end of this section.
Assemble Boom Inserts
See Figure 4-57 for the following steps.
1. Rig the lifting slings from the self-erect cylinder as
shown in View B. This rigging will be used for all inserts
and the boom top.
2. Remove the insert from the trailer:
a. Position the trailer (4) carrying the insert (5, View A)
on the desired side of the crane at the specified
radius.
NOTE The first insert must be the 12 m (39.4 ft) insert with
sheaves.
b. Attach the lifting slings (2, View A) to the lifting lugs
(6) on the insert (5).
c. Lift the insert off the trailer.
d. Remove the trailer.
3. Place the insert (5, View C) on blocking 381 mm (15 in)
high. This height will allows for installation of the boom
top.
4. Adjust the blocking as needed so the insert is level.
5. Disconnect the lifting slings.
6. If you will be using Drum 2, 3, or 6, move the wire rope
guide (7, View D) from the shipping position to the
working position, as follows:
Disregard this step if you will be using only Drum 1. The
wire rope guide can be left inside the insert.
a. Position the forks from a forklift in the forklift
channels (8, View D).
b. Lift the wire rope guide with the forklift just enough
to loosen the pins (9) and remove the pins.
c. Carefully lift the wire rope guide (7) out of the insert
(5).
d. Lift the wire rope into position on top of the insert (5)
so the attaching holes line up.
e. Install the pins (9).
f. Remove the forklift.
NOTE If the wire rope guide (7) is removed from the insert
and stored on the job site, the pins (9, View E) can be
stored as shown.
Continued on page 4-81
.
WARNING
Crush Hazard!
Never work under or inside boom sections that are not
securely blocked.
Falling Load Hazard!
The luffing jib backstay straps can be stored on the boom
sections for shipping.
Refer to the Capacity Chart for operating restrictions if the
luffing jib backstay straps, links, and retaining hardware
will be left on the boom sections during operation without
a luffing jib.
Fall Hazard!
The boom sections are equipped with catwalks and
ladders for accessing boom components during crane
assembly and disassembly. Take every precaution to
prevent falling off boom sections: use personal fall
protection. See Personal Fall-Protection on page 4-3
.
To Next Page
Loading...
