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Anti-Backup Cam Stop
On later model transmission assemblies,
the anti-backup spring has been removed
from the clutch assembly and its function
replaced with a plastic anti-backup cam
stop.
The cam stop is installed over the lower
hub of the crank gear and nests in a
deboss which has been molded in the
transmission housing, around the crank
gear stud. The deboss traps the cam
stop and prevents it from turning.
(See
illustration below.)
When the drive motor turns in the agitate
direction, the design of the cam stop
permits it to
~
around the cam located
on the crank gear hub. This allows the
crank gear to turn and drive the linkage
assembly.
When the motor reverses and goes into
the spin direction, the crank gear is al-
lowed to back up until the cam formed on
its lower hub engages a mating notch
formed on the cam stop. This interlocks
the crank gear and cam stop together.
Because the cam stop is trapped in the
housing deboss and cannot turn, neither
can the crank gear once they are inter-
locked. Since the locked crank gear also
prevents the drive pinion from turning,
the torque being delivered by the clutch
spring is now exerted against the trans-
mission housing which causes the entir
drive tra into rotate.
When the crank gear and cam stop inter-
lock, the linkage assembly is always
stopped in the same position. This
allows for a more consistent weight
distribution during the spin operation
NOTE:
At the start of the spin cycle, as
the crank gear is backing up to engage
the cam stop, a momentary movement
of the agitator may be observed. The
agitator movement will stop when the
crank gear properly positions the link-
age assembly and interlocks with the
cam stop.
Crank
Gear -
@.-
Anti-Backup
Cam Stop
o
16007667
SECTION 6. TRANSMISSION AND RELATED COMPONENTS
6·12
©
1996 Maytag Corporation
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