Differential Bearing Preload
- If differential bearing race and shim were removed from final drive housing case half, position a .039" (1 mm) shim in bearing race bore and press in bearing race. Remove bearing race and shim from shift housing case half (if not already removed), and reinstall bearing race into housing without shims.
- Install differential assembly into final drive housing case half. Position shift housing case half with gasket onto final drive housing case half and install and tighten attaching bolts. Place gauge block onto axle drive flange shaft. Install dial indicator on shift housing case so button contacts gauge block. Zero dial indicator with .039" (1 mm) preload. See Fig 1
.
CAUTION: DO NOT rotate differential when moving up and down as this will cause an incorrect reading.
- Move differential assembly up and down and note reading on dial indicator. Add constant preload figure of .016" (.4 mm) to dial indicator reading to obtain thickness of shim to install under shift housing case half differential bearing race.
- Separate housings and remove differential. Press out shift housing case half differential bearing race, install shim just determined in bearing race bore, then reinstall bearing race with a press.NOTE: Adjusting shims are available in various thicknesses from .006" (.15 mm) to .039" (1 mm). Install a combination of shims as required to make up shim pack. Thickest shim should be inserted first, with thinnest against bearing race.
- Lubricate bearings with hypoid oil and reinstall in transaxle case. Install adapter and INCH lb. torque wrench to drive axle flange shaft and check rotating torque.
- Rotating torque should be 11-31 INCH lbs. (1.2-3.5 N.m) for NEW bearings and 3 INCH lbs. (.34 N.m) for used bearings. If not within specifications, recheck bearing condition and verify proper shim thickness.