Manitowoc Published 10-01-12, Control # 044-05 4-7
777 OPERATOR’S MANUAL SET-UP AND INSTALLATION
4
CRANE ASSEMBLY
Pre-Start Checks
Make the following checks before starting the engine upon
arrival at the assembly site. See Section 3 for starting
instructions.
Engine
1. Check for leaks.
2. Check fuel, oil, and coolant levels.
3. Repair or refill as required.
Gear Boxes
1. Check for leaks.
2. Check levels.
3. Repair or refill as required.
Hydraulic System
1. Check for leaks.
2. Check level.
3. Repair or refill as required.
4. Make sure shut-off valves are open.
Remove Crane from Trailer
See Figure 4-4 for following steps.
1. Untie crane from trailer.
2. Raise and pin all catwalks in operating position (View A).
3. Check that boom angle indicator electrical cord (View B)
is plugged into junction box on boom butt.
4. Check that boom electrical cord is plugged into shorting
plug on boom junction box (View B).
NOTE: The boom electrical cord is plugged into junction
box only during erection procedure. After crane is
assembled, boom electrical cord must be plugged
into cable reel on boom butt.
WARNING
Moving Part Hazard!
Avoid serious crushing injury. Warn all personnel to stand
clear of jacks.
Tipping Hazard!
Keep crane level while jacking. A 2-way level is provided
near controls on front of carbody (Figure 4-5, View D).
A977
View A
View B
P440
Electrical
Cord
To Boom
Angle
Indicator
Boom
Junction Box
on Rotating Bed
Boom
Electrical Cord
Pin
P427
Catwalk
FIGURE 4-4
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