DRIVE PULLEY AND CAMS
The drive pulley and cam is located below the brake assembly on the drive shaft.
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
The lower cam slips over the end of the drive shaft where splines formed in the cam engage 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 pulley and cam on the drive shaft. A plastic dust cap snaps to the underside of the pulley to keep the cam surfaces clean.
OPERATION:
When the drive pulley rotates CLOCK- WISE, the upper and lower cams are designed to nest together which allows the drive pulley to remain in position on the drive shaft. The break remains en- gaged and the drive pulley will turn the lower cam and drive the shaft to cause the transmission to agitate.
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 pulley hub engage the "dogs" on the lower cam.
This causes the top of the pulley hub to push against the spacer which com- presses the brake spring and lifts the brake rotor and lining 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.
16023083 | SECTION 6. TRANSMISSION AND RELATED COMPONENTS |
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