Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 4-117
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
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NOTE For cranes with Serial Number 604716-605836,
605953, and 606114:
• The maximum boom length that can be closed or
opened using the self-erect cylinder is 66 m
(216.5 ft).
• For boom lengths longer than 66 m (216.5 ft), use
the live mast and Manitowoc supplied lifting
slings and shackles to close and open the boom
as instructed in F2293 at the end of this section.
Or, use an assist crane.
For cranes with Serial Number 605952, 606648,
and greater:
• All boom lengths can be closed or opened using
the self-erect cylinder. OR,
• The live mast and Manitowoc supplied lifting
slings and shackles can be used to close and
open the boom as instructed in F2293 at the end
of this section. Or, an assist crane can be used.
Disconnect Boom Butt from Boom
See Figure 4-80 for the following steps.
1. Unpin the handling pendants (1, View C) from storage
on the boom butt (3).
2. Lower the live mast (4, View A) and extend the self-erect
cylinder (5) as needed.
3. Pin the handling pendants (1, View B) to the lifting link
(6) on the self-erect cylinder (5).
4. Make sure the self-erect cylinder (5) is vertical before
lifting against the boom.
5. Retract the self-erect cylinder to lift against the boom
butt only enough to loosen the bottom pins (11, View F).
6. Remove the pins (11, View F) and store them in the
storage tubes (12).
7. Extend the self-erect cylinder to lower the boom onto
blocking (View E).
8. Extend the self-erect cylinder to disengage the hooked
connectors (7, View D) on the boom butt from the fixed
horizontal pins (8) on the adjacent insert.
9. Slowly travel the crane away from the boom and position
the crane and boom butt in the desired disassembly
area.
10. Lower the boom butt to the ground or blocking as
desired (View A) and slacken the rigging.
11. Disconnect the handling pendants (1, View B) from the
lifting links (6).
12. Pin the handling pendants to the boom butt (View C) for
storage.
CAUTION
Avoid Structural Damage to Mast or Cylinder!
• Do not attempt to raise the boom butt with the mast.
• Use only the self-erect cylinder to raise the boom butt
during the following steps.
WARNING
Crushing Injury Hazard!
Prevent serious crushing injury:
• Do not stand inside the boom sections while
removing the connector pins — STAND OUTSIDE
BOOM.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English