Re: 32 Transmission woes

Posted by 32model901 On 2010/8/14 18:15:50

Tbirdman,

A paragraph from a transmission shop manual listed below, although this is for later transmissions with helical cut gears, the section about worn detent balls and springs applies to the '32 gear box.

Another common mechanical problem with transmissions of this type is slipping or jumping out of gear. Actually, the transmission is much less likely to slip or jump out of first or reverse than out of second-, third-, or fourth-speed gear.

The most likely causes of the transmission slipping out of gear are worn detent balls or springs in the shifter shaft cover. These spring-loaded balls hold the shifter shaft in position. If the spring does not have enough tension or if the balls are worn, the transmission will almost certainly slip or jump out of gear.

Synchronizer damage will also cause the transmission to jump out of gear. Slipping out of any gear is most likely to occur when the driver suddenly takes his or her foot off the accelerator pedal, especially when descending a steep hill.

The thrust produced by the helical gears will tend to move all rotating gears and shafts to the rear of the transmission, as long as the torque provided by the engine is being delivered to the rear wheels by the transmission.

However, when the driver takes his or her foot off of the a
accelerator pedal, the situation is changed. The rear wheels now try to drive the engine through the transmission.

This reverses the direction of the torque being delivered through the transmission gears, and the thrust is now toward the front of the transmission. If this thrust is not controlled by the thrust washers and bearing retainers, it is likely to force the shifter shaft to move in spite of the spring-loaded ball that holds it. When this happens, the transmission slips out of gear.

Regards,

Dave