Manitowoc 777 Service And Maintenance Manual

Reference Only
777 SERVICE MANUAL HYDRAULIC SYSTEM
Manitowoc Published 10-01-2012, Control # 045-08 2-25
2
6. To prevent accidental operation of crane functions,
disconnect electrical plugs at disc brake solenoids for
load drums, travel, and swing (Figure 2-28). If crane has
an auxiliary load drum, disc brake solenoid is mounted
on drum in boom butt.
7. Support boom hoist cylinders so they can extend and
retract freely. Cylinders must be disconnected from
mast.
NOTE: The following procedures require rapid response to
changing operating conditions. Two people are
needed for checking pressures and making
adjustments. Become familiar with these
procedures before starting the engine.
Keep area in front of crane clear of all
personnel. Boom hoist cylinders will extend as
they fill with oil.
Electrical
Plug
Travel Disc
Brake Solenoid
Rear Drum
Disc Brake
Solenoid
Front Drum
Disc Brake
Solenoid
Swing Disc
Brake Solenoid
Right Side
Enclosure
Past Production
P515
FIGURE 2-28
P515a
Travel Disc
Brake Solenoid
Rear Drum
Disc Brake
Solenoid
Front Drum
Disc Brake
Solenoid
Swing Disc
Brake Solenoid
Electrical
Plug
Current Production

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English