Manitowoc Published 10-01-12, Control # 044-05 4-33
777 OPERATOR’S MANUAL SET-UP AND INSTALLATION
4
Install Crane on Trailer
See Figure 4-20 for following procedure.
1. Position trailer under crane. Fully extend carbody jacks if
required.
2. Block between carbody and trailer as required.
3. Using controls on front of carbody (View F), retract
carbody jacks fully to lower crane onto trailer.
NOTE: A 2-way level is provided near controls on front of
carbody (Views D and F).
4. Connect chain sling from assembly block to a shackle
attached to lug on front of rotating bed.
5. Lower boom butt onto trailer.
6. Disconnect rigging pendants from upper wire rope guide
on front of boom butt (View B) and connect pendants to
storage position on mast (View C).
7. Connect mast to boom butt with mast-to-butt connecting
pins (stored in lugs on mast) (View E).
8. Boom up to raise boom butt 12 – 18 in. (0.3 – 0.5 m) off
trailer.
9. Securely fasten carbody to trailer. Securely install chains
in a crisscross manner between rotating bed and trailer
to prevent rotating bed from swinging.
10. Remove jack pads and store (View H).
11. Position each carbody jack as follows:
a. Remove connecting pin 2 (View G).
b. Rotate jack up and install connecting pin 2 (View F).
c. Remove connecting pin 1 (View G).
d. Rotate jack in and install connecting pin 1 (View F).
12. Lower and pin all catwalks (View I) in storage position.
13. Stop engine and turn off cab power. Remove all keys
from operator’s cab and lock cab door.
AUXILIARY LOAD DRUM INSTALLATION
NOTE: The following instructions apply to the optional
auxiliary load drum in the boom butt.
Crane Requirements
The auxiliary load drum can be installed only on cranes that
have been modified and are equipped as indicated below.
Contact the factory Service Department to determine
whether your crane meets these requirements.
Modifications
• Hydraulic and electric components on crane.
• Control handle and programmable controller in
operator’s cab.
• Boom butt (drum mounting lugs and removable lacings).
Equipment Required
• 10 ft (3.05 m) special insert mounted next to boom butt.
Drum Installation
See Figure 4-21 for following procedure.
It is assumed that the hydraulic hoses and electric cable are
connected to the auxiliary load drum (Figure 4-21). If these
parts are not installed, see the applicable assembly drawings
in your Model 777 Parts Manual for details.
Operating Note
360° swing is permitted when crane is on jacks with boom
butt in transport position.
WARNING
Moving Part Hazard!
Avoid serious crushing injury:
• Warn all personnel to stand clear of crane and trailer.
Tipping Hazard!
Avoid tipping crane over:
• Do not hit carbody jacks with trailer.
CAUTION
Boom Stop Interference!
Booming above 10° with mast-to-butt connecting pins
installed will cause damage to mast cross member.
Boom Damage!
Do not block between boom butt and trailer or between
mast and boom hoist cylinders. Stresses induced during
transport can result in damage to boom butt and cylinders
if this precaution is not taken.
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