End Play Checks

Using Dial Indicator (J-8001), check front and rear unit end play. See Fig 1 and Fig 2. Press down on turbine shaft, then pull up on turbine shaft to eliminate any clearance between overdrive carrier and snap ring. Pull up on turbine shaft while holding output carrier up with screwdriver to measure front unit end play. Front unit end play should be .004-.022" (.10-.56 mm).
Push in on output shaft to take up any slack. Then move output shaft in and out to measure rear unit end play. Rear unit end play should be .005-.025" (.13-.63 mm). Record measurements for reassembly reference.

Fig 1: Checking Front Unit End Play

Courtesy of GENERAL MOTORS CORP.

Fig 2: Checking Rear Unit End Play

Courtesy of GENERAL MOTORS CORP.