Tools Required

Refer to the rear unit end play measurement taken during disassembly. If the rear unit end play measurement is not within specifications, use the removed selective thrust washer (674) and the Output Shaft Selective Thrust Washer Specifications table in order to select the correct selective thrust washer. Refer to End Play Specifications .

IMPORTANT: One side of the output shaft selective thrust washer (674) is machined completely flat with no rounded edges. This side must face up.

Fig 1: Identifying Output Shaft Selective Thrust Washer

Courtesy of GENERAL MOTORS CORP.

Install the output shaft selective thrust washer (674).
Retain the output shaft selective thrust washer (674) with J 36850 or equivalent.

IMPORTANT: When performing steps 4 and 5, align the low and reverse band tab with the low and reverse band servo pin hole.

Using J 28585 , install the low and reverse band (657). See Special Tools .
Install the center support spacer (643) into the case so it rests on the shoulder at the bottom of the case splines. The center support spacer opening should be placed at the 9 o'clock position.

Fig 2: Center Support Spacer Aligned In 9:00 Position
Courtesy of GENERAL MOTORS CORP.