Drive Pinion Depth
- Lubricate right and outer pinion bearings liberally with gear oil. Hold pinion bearings in position and install Pinion Shim Setting Gauge (J-33838). Set Dial Indicator (J-29763) to zero. Position indicator onto pinion shim setting gauge. See Fig 1. Push dial indicator down until needle rotates about 3/4 turns to right. Tighten dial indicator in position.
- Set bottom of pinion shim setting gauge on differential bearing bore. Rotate tool slowly back and forth until dial indicator reads lowest point of bore. Set dial indicator to zero. Repeat rocking action of tool to verify zero setting. Move tool button out of differential side bearing bore. Record dial indicator reading. Dial indicator reading equals shim size.
Courtesy of GENERAL MOTORS CORP.