Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 4-125
MLC300 OPERATOR MANUAL SETUP AND INSTALLATION
3
1
4
Remove Counterweight Tray
See Figure 4-84 for the following procedure.
NOTE The counterweight tray must be removed with an
assist crane.
For ease of counterweight tray handling and lifting,
Manitowoc provides two lifting pendants (6, View C),
a lifting plate (7), and two lifting lugs (9) on each side
of the tray.
The MLC300 must be supported on crawlers when
the tray is removed.
1. Position the live mast in the operating range so it is out
of the way.
2. Using the switch on the remote control, travel the VPC
trolley (1, View G) rearward until it is 13 mm (1/2 in) from
the stop block (17) on each side of the rotating bed.
Take care not to allow any trolley components to
contact the stop blocks.
3. Using the lifting plates (7, View B), attach four lifting
pendants (6) to the lifting slings (8) from the assist crane.
4. Attach the other end of the lifting pendants (6, View C) to
the lifting lugs (9) in the counterweight tray (1).
5. Attach hand-held taglines (11, View A) to the lugs on the
rear corners of the tray. Have ground personnel control
swinging of the tray with the taglines.
6. Disconnect the electric cable (16, View H) from the tray
at the electric cable in the right rear corner of the trolley
(1).
7. Hoist with the assist crane so the lifting pendants (6,
View A) are taut.
8. Unpin the four keeper plates (3, View E) on the VPC
trolley (1).
9. Reinstall the quick-release pins (4, View F) in the keeper
plates (3) and rotate the keeper plates against the
alignment pins (14, View F).
10. Using the switch on the remote control, disengage the
counterweight tray pins (5, View F).
11. Lower, travel, swing, and boom the assist crane as
required to remove the counterweight tray from under
the VPC trolley.
12. Using the switch on the remote control, engage the
counterweight tray pins (5, View E).
13. Pin the keeper plates (3, View E) in the working position
with the quick-release pins (4).
14. Store the counterweight chain assemblies (10, View C)
in the storage pockets in the counterweight tray.
15. Lower the counterweight tray onto a trailer and secure it
with tie-downs.
16. Slacken the lifting pendants (6, View B).
17. Disconnect the lifting pendants (6, View B) and the lifting
plates (7) from the assist crane slings (8).
18. Coil the lifting pendants (6, View C) into the storage
pockets.
19. Place the lifting plates (7, View C) in the storage
pockets.
DANGER
Tipping Crane Hazard!
Prevent the crane from tipping over:
• Do not attempt to remove the counterweight tray
unless the crawlers are installed.
WARNING
Falling Load Hazard!
Prevent counterweight tray from falling:
• The lifting slings are provided for lifting only the
counterweight tray. Do not attempt to lift the
counterweight tray with the counterweight boxes
installed. The pendants could break, allowing the tray
to fall.
Fall Hazard!
Prevent personnel from falling:
• Do not allow personnel to ride the counterweight tray
while it is being lifted.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English