Differential Bearing Preload Adjustment

True bearing turning torque readings can only be obtained with the gear train removed from the case.
1. Remove bearing cup and existing shim from clutch bellhousing case.
2. Press in new bearing cup into bell housing case (or use a cup that has been ground down on the outer edge for ease of measurement).
3. Press in new bearing cup into gear case side.
4. Lubricate differential bearings with SAE 5W-30 engine oil. Install differential assembly in transaxle gear case. Install clutch bell housing over gear case. Install and torque case bolts to 29 N.m (21 ft-lbs.).
5. Position transaxle with bell housing facing down on workbench with C-clamps. Position dial indicator.




6. Apply a medium load to differential with MB995038 and a T-Handle, in the downward direction. Roll differential assembly back and forth many times. This will settle the bearings. Zero dial indicator. To obtain end play readings, apply a medium load in the upward direction while rolling differential assembly back and forth. Record end play.
7. The shim required for proper bearing preload is total of end play and (constant) preload of 0.18 mm (.0071 in.).
8. Remove case bolts. Remove clutch bell housing differential bearing cup. Install shim(s) selected in step (7). Then press the bearing cup into clutch bell housing.
9. Install and torque case bolts to 26 N.m (19 ft-lbs.).




10. Using MB995038 and an inch-pound torque wrench, check turning torque of the differential assembly clockwise and counterclockwise. The turning torque should be 68 to 136 Nm (6 to 12 in-lbs). If the turning torque is too high, install a 0.5 mm (.0020 in.) thinner shim. If the turning torque is too low, install a 0.5 mm (.020 in.) thicker shim.
11. Recheck turning torque. Repeat Step (10) until the proper turning torque is obtained.