Manitowoc Published 12-10-19, Control # 258-05 4-23
MLC90A-1/MLC100-1 OPERATOR MANUAL SETUP AND INSTALLATION
Assemble Boom and Jib
The boom and jib can be assembled with this crane’s boom
butt or with an assist crane.
The boom and jib can be assembled with this crane either
before or after the crane counterweight is installed, at the
crane users discretion. The crane will be much easier to
maneuver without the crane counterweight installed.
For instructions, see the following topics:
• "Boom #290 Assembly" on page 4-49
• Jib #117 Assembly on page 4-55
Install Carbody Counterweight
For Series 1, disregard this procedure and go to page 4-25.
NOTE The following procedure uses the crane’s boom butt.
To provide sufficient clearance if you use an assist
crane:
• Swing the upperworks perpendicular to the
crawlers so the operator cab is on the same side
of the carbody that counterweight is being
installed.
See Figure 4-14
.
If equipped with Series 2 counterweight, install the carbody
counterweight (3) at both ends of the carbody, as follows,
BEFORE installing crane counterweight.
1. Attach the chain lifting sling (1, View A) to the hook-and-
weight ball (2).
2. Hook onto the carbody counterweight (3) with the chain
lifting sling (1) and lift the counterweight into position at
the desired end of the carbody.
3. Set the counterweight on the ground.
4. Repeat step 1
through step 3 for the carbody counter-
weight at the other end of the crane.
5. Raise the boom butt to approximately 80°.
6. Pay out the load line from Drum 1 and reposition the
load line behind the counterweight handling sheave (5,
View B). You can stand on the right side platform to
perform this step.
7. Travel forward so the load line is hanging vertically from
the sheave. DO NOT DRAG the carbody
counterweight.
8. Lift the carbody counterweight off the ground.
9. Remove the pins (6, View D) from the hooked lugs (7) on
the carbody.
10. Boom, swing, and hoist as required to engage the
cutouts in the carbody counterweight (3, View D) with
the hooked lugs (7) on the carbody.
11. Lower the carbody counterweight until the lifting slings
go slack.
12. Install the pins (6, View D) to secure the carbody
counterweight to the carbody.
13. Disconnect the chain lifting sling from the carbody
counterweight.
14. Swing 180° and connect the chain lifting sling to the
second carbody counterweight.
15. Repeat the above steps for the other carbody
counterweight.
CAUTION
Avoid Boom Butt Damage!
Do not lower the boom butt below 64° while handling the
counterweight from the handling sheave. Do not allow the
load line to contact the sheave indicator (5A, View E).
Overload damage to the sheave and boom butt can
occur.
To Next Page
Loading...
Need help?
General
