Manitowoc Published 11-06-15, Control # 040-13 5-21
2250 SERVICE/MAINTENANCE MANUAL HOISTS
DRUM CLUTCH INSPECTION AND
ADJUSTMENT — RIGHT REAR DRUM
CLUTCH (421339)
General
See Figure 5-16 for the following procedure.
The right rear drum clutch used for operation in the clamshell
mode is an internal, expanding band-type clutch that is air-
applied and spring-released. The clutch is mounted on the
right end of the drum shaft.
The drum clutch is controlled by a 2-position (on/off)
normally-open solenoid valve located on the left side of the
rotating bed.
A clutch access hole with a removable cover is provided in
the guard over the drum brake and clutch.
Make all inspections and adjustments when the clutch lining
is warm from operation.
FIGURE 5-16
Left Rear
Drum Clutch
Solenoid Valves on
Left Side of Rotating Bed
P805
Front Drum
Clutch
(if equipped)
Rear or Right
Rear Drum
Clutch
FIGURE 5-17
2
22
Mark A
Matching
Numbers
View A
A1147
1
2
3
4
5
6
12
11
10
9
8
7
13
14
15
10
Item Description
1 Dead End
2Live End
3 Adjusting Nut
4Jam Nut
5 Access Door
6 Guard
7 Drum Flange
8 Air Cylinder
9Clutch Spider
10 Lining
11 Band
12 Clutch Lever
13 Band Guide (4 places)
14 Connecting Plate
15 Band Sections