belt drive models - Whirlpool

SUMMARYGenerally speaking, it is the mechanical componentsthat determine the useful life of the washer. The twomajor operating units are the gearcase and thesuperstructure. The gearcase controls the agitationfunction while the superstructure will control thebasket during spin and braking. The two units aredriven by a common motor and belt, however, thetwo units never work simultaneously. The controlmagnet assembly in conjunction with two cam barscontrols the independent operation of the units.Due to the configuration of the gears in the gearcase,the agitator gear rotates first in one direction andthen in the opposite direction. During agitation, theagitate solenoid pulls the agitate cam bar, allowingthe agitator gear to engage with the two pins on theagitator shaft which causes the agitator shaft torotate with the agitator gear. At the end of the spinperiod, or if the lid is opened during spin, the circuitto the spin solenoid is opened. This action causes thespin cam bar to move forward, forcing the brake yokeupward and separating the basket clutch from thedrive pulley. It also causes the upper and lower brakelinings to engage, bringing the basket to a fast,smooth stop.Before reassembly of the gearcase, examine all gearsfor excessive wear or sharp nicks. A hardened steelwasher is available to repair a worn gearcase cover.When transporting a gearcase it should never becarried by the agitator shaft. It is possible to dislodgethe thrust bearing washer which would prevent theshaft from proper seating on the bearing.Before installing the gearcase, always check thecondition of the centerpost bearings and seals, andreplace them if they show the slightest wear.After installation of the gearcase and superstructure,it is imperative that the alignment of the gearcaseand centerpost be checked. If the spin basket is looseon the spin tube it will cause excessive noise. If thedrive block notches are worn the drive block must bereplaced. The snubber is used to reduce baseplateand tub assembly motion during machine operation.18