Manitowoc 777 User Manual

Reference Only
Manitowoc Published 10-01-12, Control # 044-05 4-17
777 OPERATOR’S MANUAL SET-UP AND INSTALLATION
4
11. Raise boom butt until handing pendants are hanging
approximately 6 in. (152 mm) above ground
(Figure 4-10, View A).
12. Position crane so it is in-line and centered with upper
counterweight assembly (Figure 4-10, View B).
NOTE: Select and confirm SETUP mode. Use the remote
control for steps 13 – 16.
The remote controller has sufficient cable to allow
operator to stand alongside rear of crane and
closely observe operation
13. Connect counterweight handling pendants to lugs on
counterweight tray (Figure 4-10, Views C and D).
14. Raise counterweight until front hooks on counterweight
tray engage fixed pins on engine base (Figure 4-10,
View F).
NOTE: The front end of the counterweight rises first. The
rollers on the counterweight tray roll along the
engine frame and guide the counterweight up until
the front hooks engage the fixed pins on the engine
base.
15. Continue to raise counterweight until rear holes line up.
16. Install rear pins between engine base and counterweight
tray (Figure 4-10, View G).
NOTE: Select and confirm STANDARD mode and use
boom hoist control in cab for remaining steps. Store
the remote control.
17. Raise boom butt until counterweight lifting links are fully
lowered (Figure 4-10, View H).
18. Disconnect counterweight lifting pendants from
counterweight lifting links (Figure 4-10, View H). Same
pins are used in step 20.
19. Lower boom butt until mast is vertical.
20. Pin counterweight lifting pendants to mast for storage
(Figure 4-9, View D).
Assemble Boom
Assemble the desired boom and jib combination as
instructed in the Rigging Guides in this section.
The crane must be in the following configuration to assemble
its own boom and jib:
• Crane rigged as shown in Figure 4-2.
• Radius limited to 26 ft (7.9 m).
• Capacity limited to 40,000 lb (18 144 kg).
Connect Boom Butt To Boom
The boom sections have FACT™ connectors:
• The top connectors are joined by fixed vertical pins that
hook into holes in the adjacent section (Figure 4-12,
View B).
• The bottom connectors are joined by removable
horizontal pins (Figure 4-12, View C).
1. Remove assembly block:
a. Disconnect wire rope from socket and wedge on
boom butt.
b. Remove wire rope from assembly block and tie off
wire rope to upper wire rope guide.
c. Remove and store assembly block.
2. Lower butt onto blocking approximately 15 in. (381 mm)
high (Figure 4-11).
3. Unpin upper wire rope guide from end of boom butt
(Figure 4-11, View A). Use same pins in step 4.
WARNING
Falling Load Hazard!
Always stand to side of counterweight while handling it.
Do not stand between counterweight and rear of crane
while handling counterweight. Never go under
counterweight unless counterweight is securely pinned in
place.
DANGER
Falling Load Hazard!
Prevent crane from tipping or structural damage to
components:
• Do not exceed 26 ft (7.9 m) radius.
• Do not lift more than 40,000 lb (18 144 kg).

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English