Manitowoc MLC90A-1 User Manual

Manitowoc Published 12-10-19, Control # 258-05 4-33
MLC90A-1/MLC100-1 OPERATOR MANUAL SETUP AND INSTALLATION
3
1
4
Remove Hook-and-Weight Ball
After you are done using the for self-assembly, remove the
hook-and-weight ball from the boom butt. Reverse the steps
for Install Hook-and-Weight Ball on page 4-19
.
Connect Boom Butt to Boom
See Figure 4-19.
1. If not already done, remove the hook-and-weight ball.
See Remove Hook-and-Weight Ball
.
2. Boom up to lift the boom butt (1, View A) clear of the
ground.
3. Position the crane so the boom butt (1, View A) is in line
with the boom insert (2).
4. Travel forward slowly, swing, and boom up and down as
needed to align the top connectors (3, View B) on the
boom butt (1) with the top connectors (3) on the insert
(2).
5. Check the appropriate capacity chart to see if the
crawlers need to be blocked to raise the boom. If so,
proceed as follows:
a. Mark the ground at the center of the front tumbler or
roller (4, View A).
See the Crawler Blocking Diagram in the Capacity
Chart Manual for blocking requirements.
b. Slowly travel in reverse several feet.
c. Place the required blocking (5, View A) on the
ground at the points marked in step a
.
d. Repeat step 4
while traveling onto the blocking.
6. Align the top connector holes and install the top
connector pins (6, View B) — long tapered end pointing
in.
The pins are stored in holders on the boom insert.
7. Connect the boom pendants to the equalizer now,
BEFORE CLOSING THE BOOM. See Connect Boom
Pendants to Equalizer on page 4-35.
WARNING
Tipping Hazard!
Prevent the crane from tipping:
• Block the crawlers — if required per the capacity
chart — before attempting to raise the boom.
WARNING
Crushing Injury Hazard!
Prevent serious crushing injury:
• Do not stand inside the boom sections while installing
the connector pins — STAND OUTSIDE BOOM.

Manitowoc MLC90A-1 Specifications

General

Brand	Manitowoc
Model	MLC90A-1
Category	Construction Equipment
Language	English