Manitowoc MLC650 User Manual

Manitowoc Published 08-12-19, Control # 224-13_v2 4-93
MLC650 OPERATOR MANUAL SET-UP AND INSTALLATION
4
BOOM LADDERS
General
On past production cranes, two ladders (2) are stored inside
the 12 m (40 ft) with sheaves insert (1) as shown in
Figure 4-72
. The ladders are designed for use in assembly/
disassembly and maintenance of #680 boom sections and
components. Each ladder weighs approximately 15 kg
(32 lb).
Removing Ladders from Insert
It is recommended that two people remove either ladder from
the boom insert: one person inside the insert to unlatch and
lift the ladder and another person outside the insert to help
guide the ladder out of the insert.
See Figure 4-72
for the following procedure:
1. Lower boom onto blocking at ground level. Boom
sections must be horizontal.
2. Unhook rubber latches (5).
3. Lift ladder (2) up and out of ladder mounting brackets
(3).
4. Guide ladder through lacings to outside of insert.
Installing Ladders on Boom Inserts
Lift ladder (2) to desired outside location on insert so ladder
is securely hooked over backside of upper chord and lower
pad (6) is firm against lower chord (see working position).
Ladder must hang vertically against boom insert when in
use.
Storing Ladders in Insert
It is recommended that two people store either ladder in the
insert: one person outside the insert to help guide the ladder
into the insert and another person inside the insert to lift the
ladder and latch it into position.
See Figure 4-72
for the following procedure:
1. Hang ladder rails over ladder mounting brackets (3 and
4) inside insert.
Pull rubber latches (5) tightly over lower rails and latch in
keepers on ladder mounting brackets.
WARNING
To Prevent Serious Injury or Death:
• Limit load on ladder to 136 kg (300 lb).
• Avoid improper use. Ladder is intended for use only
on Manitowoc #680 boom inserts. Any other use is
prohibited.
• Use ladder for boom rigging/disassembly and
maintenance only when boom is horizontal.
• Make sure ladder is properly secured to insert.
• Keep hands free of any objects while climbing ladder.
Objects which cannot be carried in pockets or tool
belts must be lifted into place onto ladder platform
prior to climbing ladder.
• Stand only on platform. Do not stand on cross braces.
WARNING
Falling Load Hazard!
Ladders must be properly stored to prevent them from
falling out of insert when boom is raised.

Manitowoc MLC650 Specifications

General

Brand	Manitowoc
Model	MLC650
Category	Construction Equipment
Language	English