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Module 2- Apply and Hold Devices (Page 2 of 6)

The Three Apply / Hold Devices of an Automatic Transmission

The three devices that an automatic tranmission uses to hold or apply the components of a planetary gear set are:

1. A Brake Band (A brake band is pictured below)

2. A Clutch Pack (A clutch pack is pictured below)

3. A sprag or one-way-clutch (A sprag clutch is pictured below)

Module 2 (Page 2 of 6)