Maytag Atlantis - Manual (Page 23)

When the drive pinion rotates in a clockwise
direction, the gear lock mechanism exerts no
force on the input pinion. When the input pin­
ion starts to revolve counterclockwise the
"wings" drop into dents in the lower housing
preventing the pinion from turning.
DRIVE PULLEY AND CAMS
The drive pulley and cam is located below
the brake assembly on the drive shaft
(Figure 2-2).
All models are equipped with a plastic drive
pulley which has the upper cam molded
onto the bottom of the hub. The purpose of
the pulley and cam arrangement is to drive
the clutch assembly during the agitate and
spin cycle, and to disengage the brake
assembly during the spin cycle.
The drive pulley slips over the drive shaft and
rests against a series of washers, a thrust
bearing, and a large washer type spacer. The
spacer locates against the bottom of the
brake rotor and lining assembly (See the
illustration on page 7-6).
The lower cam slips over the end of the drive
shaft where splines formed in the cam en­
gage with mating splines on the drive shaft
end. This imparts a direct drive from the cam
to the drive shaft.
A shoulder molded on the bottom of the
pulley hub engages “dogs" formed on the
sides of the lower cam, and will drive it and
the drive shaft in either direction.
A washer and retaining ring secure the pul­
ley and cam on the drive shaft. A plastic dust
cap snaps to the underside of the pulley to
keep the cam surfaces clean.
OPERATION: AGITATION
When the drive pulley rotates CLOCKWISE,
the upper and lower cams are designed to nest
together which allows the drive pulley to re­
main in position on the drive shaft. The brake
remains engaged and the drive pulley will turn
the lower cam and drive the shaft to cause
the transmission to agitate.
The agitation is due to the clockwise (agitate)
rotation of the drive shaft and the hub assem­
bly as it is transmitted to the input pinion by
the clutch spring. The input pinion meshes
with the dual cluster gears which, in turn mesh
with the dual crank gears (Figure 2-3). The
circular motion of the dual crank gears are con­
verted to the oscillating action of the agitator
shaft by the dual rack gears. The rack gears
have a stud that drops into the crank gears.
These rack gears are contained by a rack car­
rier. Any tendency of the transmission to turn,
or "creep," is prevented by the engaged brake
assembly located on the under side of the
suspension housing.
OPERATION: SPIN
When the drive pulley rotates COUNTER­
CLOCKWISE, the upper cam and pulley ride
up the lower cam approximately 3/16 of an
inch before the driving shoulders on the pul­
ley hub engage the "dogs" on the lower cam.
This causes the top of the pulley hub to push
against the spacer which compresses the
brake spring and lifts the brake rotor and lin­
ing assembly off the brake stator. The brake
is disengaged and the pulley will turn the lower
cam and drive shaft to cause the transmission
to spin.
A nylon cam, along with a special drive pul­
ley, provides a cam action which raises the
drive pulley during the counterclockwise
(spin) rotation of the motor (Figure 2-2). As
the drive pulley hub moves up, it compresses
a brake spring and lifts the brake rotor and
lining assembly, disengaging it from the sta­
tor. The transmission is now free to spin.
16009485-01
©1999 Maytag Appliances Sales Company
Section 2. Operation
2-3