SUBSECTION 7D
to 1/4 inch. When wear has reduced the thickness of the
THIRD DRUM CLUTCH (9215J105-2)
lining to within 1/16 inch of the rivets, the band should be
DESCRIPTION. The third drum clutch is located on the end
relined.
of the third drum shaft. This clutch is hydraulically applied,
REMOVAL AND DISASSEMBLY. To remove and disassem-
spring released. When there is no pressure in the clutch
cylinder, the return spring applies force to the actuating
levers to contract the band and release the clutch. When
1. If any rope remains on the third drum, set the third drum
the operator moves the third drum control lever to raise a
brake to prevent the rotation of the durm.
load on the third drum, hydraulic fluid is forced into the
2. See Subsection 7B, Third Drum (2100J1132-9) and
cylinder. This causes the piston to extend and apply force on
remove the following:
the actuating levers to expand the band and apply the
clutch.
A. Remove the hydraulic line from the swivel and remove
the swivel.
Since lining wear will usually be greatest at the dead end of
6. Remove the nut, lockwasher and spacer from the end of
the clutch band, the clutch band may be rotated 180 when
the shaft.
wear has reduced the thickness of the lining at the dead end
7D-3