Input Shaft End Play Measurement

Special Tools

• J 39686  Input End Play Check Tool
• J 25025-7A  Dial Indicator Post
• J 8001  Dial Indicator

For equivalent regional tools, refer to Special Tools .

Fig 1: Dial Indicator & Post
Courtesy of GENERAL MOTORS COMPANY
1. Rotate the transmission so the side cover (29) faces up.
2. Install the J 39686  input end play check tool into the case barrel. Install the J 25025-7A  dial indicator post.
Fig 2: Locating The J Tab On The Input Shaft
Courtesy of GENERAL MOTORS COMPANY
3. Locate the J tab of the J 39686  input end play check tool on the input shaft (604). The arrow on the J tab should have a 90 degree orientation.
NOTE:

The washer of the J 39686  input end play check tool must rest flat on the case cover seal.

4. Rotate the threaded shaft of the J 39686  input end play check tool clockwise until the shaft is tight. Leave enough space for the collar.
5. Insert the collar. Install the J 8001  dial indicator.
Fig 3: Checking Input Shaft End Play
Courtesy of GENERAL MOTORS COMPANY
6. Push down on the handle of the J 39686  input end play check tool and check the end play. End play should be 0.10-0.85 mm (0.004-0.033 in).

   If the measurement is out of the specification range, determine the appropriate selective thrust washer (522) for installation when you reassemble the input shaft.

7. Remove the J 8001  dial indicator, the J 25025-7A  dial indicator postand the J 39686  input end play check tool.