Manitowoc 2250 - Special Controls; Clamshell Operation-Manually Operated Clutch; General

Reference Only
Manitowoc Published 06-24-16, Control # 241-01 3-43
2250 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
SPECIAL CONTROLS
Clamshell Operation—Manually Operated
Clutch
General
This topic describes clamshell operation for cranes with a
right rear air-applied drum clutch that is manually controlled
with a clutch button on the left control handle. It also
describes clamshell operation for cranes equipped with
Modification 417332 to Add Clam Control for Right Rear Air-
Applied Drum Clutch.
These instructions replace the clamshell instructions in
Clamshell Operation—Standard on page 3-39
.
See Figure 3-26
for identification of the clam controls and
drums.
FIGURE 3-26
Right
Brake Pedal
Left
Brake Pedal
Swing and
Boom Hoist
Handle
Closing Line
Drum
Holding Line
Drum
NOT
USED
Automatic Take-Up
Air Pressure
Gauge
Automatic Take-Up
Air Pressure
Regulator
Lower Bucket
Handle off and
Release Brake to
Open Bucket
Right
Handle
Left
Handle
AND
Close
Bucket
Raise
Bucket
Clutch
Button
Crane
Mode
WARNING
Crane Movement Hazard!
Avoid death or serious injury. Movement of any operation
of the crane while unattended can lead to a serious
accident.
The crane operator shall not leave the operator’s cab until
the crane, loads, and boom have been secured to prevent
movement.