Manitowoc 777 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 777 OPERATOR’S MANUAL
3-20 Published 10-01-12, Control # 044-05 v2
H10. Front Drum Working Brake Pedal
H11. Rear Drum Working Brake Pedal
See Figure 3-9 for following procedure.
Each free fall equipped drum has a brake pedal that can be
pressed down at anytime to stop the drum.
PRESS pedal to APPLY drum brake in relation to pedal
movement. Fully press and latch pedal to fully apply brake.
RELEASE pedal to RELEASE drum brake gradually as
pedal is eased up.
J – Swing Controls
J1. Swing Handle
Dual-axis handle allows swing and boom hoist to be
operated at the same time with one handle.
Move handle to LEFT to SWING LEFT. Swing speed
increases in relation to handle movement.
Release handle to CENTER to STOP. Swing speed
decreases to off and rotating bed slows to a stop. Move
swing control handle in the opposite swing direction to stop
swing motion quicker.
Press swing holding brake switch to hold stopped rotating
bed in position.
Move handle to RIGHT to SWING RIGHT. Swing speed
increases in relation to handle movement.
NOTE: If equipped, the optional swing alarm will beep to
warn personnel when rotating bed is swung in
either direction.
J2. Swing Lock Switch
Swing lock provides a positive means of locking rotating bed
in position when swinging is not required.
Press FRONT of rocker to ENGAGE swing lock with ring
gear.
Press REAR of rocker to DISENGAGE swing lock from the
ring gear.
J3. Swing Brake Switch
Swing is equipped with a spring-applied, hydraulically-
released disc brake.
Press FRONT of rocker to TURN ON swing brake.
Press REAR of rocker to TURN OFF swing brake.
J4. Swing Holding Brake Switch
Use swing holding brake switch (on side of swing/boom hoist
handle) to hold rotating bed in position for short periods of
time during operating cycle. Swing brake will apply and
swing handle will be inoperable while switch is pressed.
PRESS button to APPLY swing holding brake.
RELEASE button to RELEASE swing holding brake.
FIGURE 3-9
Operating Position
A963
Latch
(latch stored)
Pedal Latched
(brake fully applied)
Pedal Ready
to Be Latched
Stored
Release
Apply
Press Latch Release
to Unlatch Pedal
Latch Release
Pops Up
Press Latch
Down
Press Down
Fully to Latch
CAUTION
Swing Lock Damage!
Do not engage swing lock while swinging; structural
damage to swing lock and ring gear will result. Do not
swing until swing lock is disengaged.

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English