Tools Required

DT 46410  Differential Rotational Torque Adapter. See Special Tools .

If any of the following components have been serviced or replaced, inspect the rotational torque to prevent internal damaged to the transaxle assembly.

• The transmission case (31)
• The torque converter housing (150)
• The front differential assembly (919)
• The front differential front bearing (902)
• The front differential rear bearing (907)

The rotational torque can be changed by replacing the front differential bearing race 85 mm selective shim (910) as needed.

Measure the starting rotational torque at normal room temperature in both directions.

Fig 1: Front Differential Assembly, Torque Converter Housing, Gasket & Transmission Case
Courtesy of GENERAL MOTORS CORP.
1. Install the front differential assembly (919) into the torque converter housing (150).
2. Install both 14 x 25 mm torque converter housing locating pins (126) into the torque converter housing (150).
3. Install the torque converter housing gasket (68) into the torque converter housing (150).
4. Install the transmission case (31) onto the torque converter housing (150).
Fig 2: Torque Converter Housing & Bolts
Courtesy of GENERAL MOTORS CORP.
5. Install a M10 x 1.25 x 50 mm transmission case bolt (92) in the correct location.
6. Install 5 M10 x 1.25 x 70 mm torque converter housing bolts (91) in the correct location.
7. Install a M10 x 1.25 x 80 mm torque converter housing bolt (107) in the correct location.
8. Install 14 M10 x 1.25 x 90 mm torque converter housing bolts (106) in the correct location.
9. Install a M10 x 1.25 x 100 mm torque converter housing bolt (90) in the correct location.
10. Install both M10 x 1.25 x 140 mm torque converter housing bolts (89) in the correct location, include the one transmission lift bracket (88).
Fig 3: View Of Front Differential Rotational Torque Bolts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Fastener Notice in Cautions and Notices.
11. Tighten the bolts in the sequence shown.

    Tighten:  Tighten the bolts to 44 N.m (33 lb ft)

Fig 4: Rotating The Differential Assembly In Both Directions In Order To Seat The Bearings Using DT 46410
Courtesy of GENERAL MOTORS CORP.
12. Using DT 46410  (2), rotate the differential assembly (919) in both directions in order to seat the bearings. See Special Tools .
13. Using DT 46410  (2), and a torque wrench that can measure the specifications (1), measure the starting rotational torque of the front differential assembly (919). See Special Tools .

    Specification: 

    • New bearings: 3.9-5.1 N.m (35-45 lb in)
    • Reused bearings: 3.6-4.8 N.m (32-43 lb in)

14. If the observed measurement is out of specification, remove the front differential bearing race selective shim (910) from the transmission case housing (31) and measure its thickness. Refer to Transmission Case Front Differential Bearing Race Replacement .
15. Select a new front differential bearing race selective shim (910) from the front differential bearing race selective shim table.
    • To increase the starting rotational torque, increase the thickness of the front differential bearing race selective shim (910).
    • To decrease the starting torque, decrease the thickness of the front differential bearing race selective shim (910).
    • Changing the shim to next size will increase or decrease the starting rotational torque approximately 0.5-0.6 N.m (5.5 lb in).
16. Install the new front differential bearing race selective shim (910), and then recheck the starting torque.