A/T - 4T60E Torrington Bearing Replaced

Technical
Bulletin # 282

Transmission:
4T60-E

Subject:
1-2 Roller bearing replaced

Application:
GM

4T60-E

1-2 Roller Clutch to Final Drive Torrington(R) Bearing Replaced

The flat needle bearing which was used to separate the final drive ring gear from the 1-2 roller clutch support has been changed to a solid thrust washer. This design change was incorporated because the 1-2 roller support is held stationary by the forward band in all ranges except reverse, park and neutral.

Therefore, a bearing in this position served no value as the transmission is operated for only short periods of time in reverse and is under no load in park and neutral. The former bearing has been replaced as of start of production in 1994 on all models with a solid steel thrust washer, Do not be alarmed if you see this washer in earlier model units which have been repaired or replaced by a rebuilt unit.