A/T Differential Carrier Bearing Preload Inspection

A/T Differential Carrier Bearing Preload Inspection

Special Tools Required

- Attachment, 83 mm 07HAD-SG00100
- Preload Inspection Tool 070AJ-0020101
- Driver Handle, 15 x 135L 07749-0010000

NOTE: If the transmission housing, the torque converter housing, the differential carrier, the tapered roller bearing, the bearing outer race, or the thrust shim were replaced, the bearing preload must be adjusted.

1. Remove the bearing outer race (A), the spacer (B), and the 85 mm thrust shim (C) from the transmission housing (D) by heating the transmission housing to about 212 °F (100 °C) with a heat gun (E). Do not heat the transmission housing more than 212 °F (100 °C).

NOTE: Let the transmission housing cool to room temperature before adjusting the bearing preload.





2. Replace the tapered roller bearing when the bearing outer race is to be replaced.

3. Do not use an 85 mm shim on the torque converter housing side.

4. Install the 85 mm thrust shim (A) in the transmission housing (B). If you install a new 85 mm thrust shim, use the same thickness shim as the old one.





5. Install the spacer (C) by aligning the tab (D) with the groove (E), and install the bearing outer race (F) in the transmission housing.

6. Drive the bearing outer race securely in the transmission housing using the 15 x 135L driver handle and the 83 mm attachment so there is no clearance between the bearing outer race, the spacer, the 85 mm thrust shim, and the transmission housing.






7. Install the differential assembly (B) in the torque converter housing (C), and install a new gasket (D) and the two dowel pins (E) on the torque converter housing.





8. Install the transmission housing (F), and install the mounting bolts (30 bolts) with transmission hanger A, then tighten the bolts.

9. Rotate the differential assembly in both directions to seat the bearings.

10. Measure the starting torque of the differential assembly with the preload inspection tool, a torque wrench (A), and a socket (B). Measure the starting torque at normal room temperature in both directions.









11. If the measurement is out of the standard, remove the 85 mm thrust shim and measure its thickness.

12. Select a new 85 mm thrust shim. To increase the starting torque, increase thickness of the 85 mm thrust shim. To decrease the starting torque, decrease the thickness of the 85 mm thrust shim.
Changing the 85 mm shim to the next size will increase or decrease the starting torque about 0.5-0.6 Nm (5.10-6.12 kgf-cm, 3.8-4.5 lbf-in).

THRUST SHIM, 85 mm










THRUST SHIM, 85 mm (cont'd)





13. Install a new thrust shim, then recheck the starting torque.