General Operation Definition - GE WDSS4120 Technical Service Manual

General Information
The washer uses a reversing type motor, a special drive
belt and an idler assembly. The idler assembly applies
tension to the outside of the drive belt. However, the
loading door must be closed for the washer to agitate or
spin.
During agitation, the motor runs in a counterclockwise
direction. The spring tension on the idler pulley applies
tension required to reduce the slack on the drive belt
and maintain maximum belt to motor pulley contact.
This eliminates belt slippage and ensures an efficient
wash action, even with extra large loads.
The belt drives the transmission drive pulley in a
counterclockwise direction. The pulley drives the
helix which is attached to the input shaft of the
transmission. This causes the input shaft to turn
inside of a roller clutch which is pressed into the
transmission cover.
This roller clutch acts as a bearing in a
counterclockwise direction allowing the transmission
gears to operate. The transmission's rack and pinion
gear design produces a 210° agitation stroke at the
output shaft of the transmission which drives the
agitator. The brake assembly remains locked during
the agitation mode since no pressure is applied to it
by the transmission drive pulley. NOTE: During the
gentle cycle, it is normal for the washer to stop
agitating and pause periodically.
After the wash agitation is completed, the timer
advances into the first spin. During spin, the motor
reverses turning in a clockwise direction to spin the
Temperature
Pressure
switch
switch
Washtub
Transmission
Motor
water out of the washtub. The combination of water,
washtub and load weight cause the drive belt tension on
the idler side of the belt to overtake the idler spring
pressure allowing the belt to slack on the opposite side.
This reduces the belt to pulley contact and allows
slipping between the belt and pulley.
As water is removed by the direct drive pump and the
momentum of the washtub increases, the idler spring
tension gradually overcomes the belt tension removing
the belt slack. This eventually increases the belt to
pulley contact until maximum spin speed is achieved.
The drive pulley turns clockwise riding up the ramps of
the helix, exerting pressure on the brake and forcing it to
release from brake pads. The helix drives the input shaft
of the transmission, and when the input shaft turns in a
clockwise direction the roller clutch locks onto the shaft
causing the entire transmission assembly to turn. None
of the gears in the transmission are operating at this
time. The hub of the washtub is attached to the
transmission tube and rotates with the transmission
assembly. The centrifugal force created by the spinning
washtub causes water to be extracted from the clothes.
Water is introduced during the first spin to "SPRAY" the
garments and remove suds from them. The initial spin is
followed by rinse agitation to rinse away any detergent
residue. The washer fills and then agitates like the wash
portion of the cycle. Following rinse agitation, a final spin
extracts the rinse water from the clothes preparing them
for the dryer.
Timer
Mixing
valve
Agitator
Plastic
outer
Pump
6
tub