Manitowoc 777 User Manual

Reference Only
SET-UP AND INSTALLATION 777 OPERATOR’S MANUAL
4-62 Published 10-01-12, Control # 044-05
6. Disconnect block-up limit electric cord at cable in boom
point and at junction boxes in jib point. Store cable on jib
butt.
Reconnect block-up limit electric cable to jib at junction
box in boom point (See Block-Up Limit Control
Assembly Drawing at end of this section).
7. Remove load line and block-up limit chains and weights
from jib.
Store Jib Stop
1. Remove shackle to disconnect cable extension from
winch cable (Figure 4-38, View D). Store shackle with
cable extension.
2. Wind excess cable onto winch.
3. Remove offset pins (Figure 4-38, View A) and pin inner
tubes in 5° position.
4. Support jib stop frame so it cannot drop, and remove
connecting pin (Figure 4-38, View A).
5. Raise jib stop frame and pin it to strut with storage pins
(Figure 4-36, View D).
6. Disconnect cable sheave from end of boom top
(Figure 4-38, View E).
7. Store cable sheave and cable extension on jib stop
frame.
Lower Strut
1. Using appropriate slings, attach hook from assist crane
to front side of sheave in jib strut.
2. Slowly hoist with assist crane to support strut. Avoid
lifting jib butt/boom top in process.
3. If required, raise jib point with an outside assist (another
crane or fork-lift truck) to gain enough slack to allow
unpinning backstay pendants.
4. Disconnect backstay links (1) from lugs on boom insert
(Figure 4-38, View G).
5. Lay backstay pendants on ground alongside boom.
6. Lower jib strut onto jib butt.
7. Disconnect assist crane from sheave in jib strut.
Remove Backstay Pendants
1. Disconnect backstay pendants (2) and remove spreader
and links from strut (Figure 4-37, View B).
2. Coil and store backstay pendants for future use.
Remove Jib Pendants
See Figure 4-37 for following procedure.
1. Disconnect jib pendants and remove links and spreader
from strut.
2. Disassemble and remove all jib pendants from jib.
3. Coil and store jib pendants for future use.
4. Store all backstay links and spreaders for future use.
Remove Jib Top and Inserts
1. Unpin and remove jib top from jib butt or jib insert
(Figure 4-36, View B).
2. Unpin and remove inserts from butt, as required
(Figure 4-36, View B).
Remove Jib Butt
1. Support jib butt with assist crane.
2. Unpin and remove jib butt from boom top (Figure 4-36,
View C).
WARNING!
Falling Strut Hazard!
Do not disconnect backstay pendants until strut is
supported and pendants are slack.

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English