Manitowoc Published 12-10-19, Control # 258-05 4-25
MLC90A-1/MLC100-1 OPERATOR MANUAL SETUP AND INSTALLATION
Assemble Crane Counterweight
See Figure 4-15.
The can be used to assemble the crane counterweight using
the chain lifting sling (1, View A) attached to the hook-and-
weight ball (2).
1. Lift the counterweight tray (1, View B) onto the ground.
Lift at the three lifting lugs provided.
1. For Series 1:
a. Install the two connecting pins (5, View C) in the top
holes of either counterweight box (4).
b. Using two legs of the chain lifting sling (1, View C),
lift the counterweight box (4) at the two connecting
pins (5).
c. Lift the counterweight box into position on the
counterweight tray (3, View B).
d. Disconnect the lifting slings and remove the
connecting pins (5, View B) from the top holes of the
counterweight box (4).
e. Pin the counterweight box (4, View B) to the
counterweight tray (3) with the two connecting pins
(5).
f. Repeat the above steps for the other counterweight
box (4).
2. For Series 2, repeat the above steps for the top two
counterweight boxes (4).
3. Make sure all of the counterweight boxes are pinned to
the tray and to each other with connecting pins (5). Make
sure the safety pins are installed.
WARNING
Falling Load Hazard!
The three lifting lugs on the counterweight tray are
designed only for lifting the tray. Do not attempt to lift the
counterweight tray from the lifting lugs with the
counterweight boxes installed. The lifting lugs may break
allowing the tray and boxes to fall.
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