Manitowoc Published 08-12-19, Control # 224-13_v2 4-113
MLC650 OPERATOR MANUAL SET-UP AND INSTALLATION
Install Upper Boom Point
See Figure 4-85 for the following procedure:
1. Attach lifting slings from the self-erect cylinder (or an
assist crane) to the upper boom point (1).
Current cranes have a lifting lug (1a).
2. Lift the upper boom point into position at the lower boom
point.
3. Remove the upper safety pins and pins (2) from the
upper boom point. The lower pins can remain in place.
4. Align the upper holes in the upper boom point with the
holes in the lower boom point and install the upper pins
and safety pins (2).
5. Lower the upper boom point so the sheaves rest on
blocking high enough to prevent the anti-two block lug
(3) from contacting the ground.
6. Disconnect the lifting slings.
7. Connect the electric cable (5) from the upper boom point
to the receptacle (6) in the boom top (View A).
The electric cable is stored on the brackets on the left
side of the upper boom point.
8. Install the lower pins (4), as follows, when the boom is
raised:
a. Remove the lower pins (4) from the upper boom
point.
b. Slowly boom up to align the bottom connecting
holes.
c. Install the lower pins (4).
Connect Terminator/Shorting Plugs at Boom
Top
• If the crane will not be equipped with a luffing jib, the
terminator plug (9) must be connected to the CAN NET
OUT electric cable (8) in the boom top.
• If the crane will not be equipped with an upper boom
point or a fixed jib, the shorting plug (7) must be
connected to the ATTACHMENTS receptacle (6).
• If the crane will not be equipped with the anti-two block
slow down option, the shorting plug (10) must be
attached to the SLOW DOWN electric cable (11).
WARNING
Tipping Crane Hazard!
To raise some boom and jib lengths, the upper boom point
must be removed. The crane will tip if this is not done.
Refer to the appropriate Liftcrane Boom or Liftcrane Jib
Capacity Chart to determine the upper boom point
requirements and deducts.
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