Service Procedure

Figure 1(Group 1 Vehicles):

SERVICE PROCEDURE (Applies to both left and right front drive axles):

Group 1 (VIN KU300001 - KU3009951
1. Support front of vehicle with floor jack. Lift vehicle just enough to permit the removal of the front wheels

(see Section OA of the 1989 Toronado Service Manual for hoisting Information).

2. Remove front tire and wheel assembly.

3. Loosen drive axle nut one-sixth turn (one flat).

4. Tighten nut to original position.

5. Check and record torque to re-loosen drive axle nut.

6. If torque in Step (5) is below 80 N-m (60 ft.lbs.), replace hub and bearing assembly and seal per 1989 Oldsmobile Toronado Service Manual procedure, page 3C-6.


NOTICE: If a hub and bearing assembly is replaced, then the two brake caliper to knuckle bolts (P/N 22529144) MUST also be replaced (see NOTICE on page 5B3-1 of Service Manual).


7. Remove drive axle nut and washer and discard.

Proceed with steps (8) through (11), referring to Figure 1., and use Service Kit P/N 3634775.


8. Install splined washer adaptor.

9. Install new washer.

10. Install new torque prevailing nut and torque to 245 N-m (180 ft.lbs.)

IMPORTANT: Use torque wrench to tighten drive axle nut to specification.
11. Install nut retainer over nut and be certain that the three tabs latch into the three notches in the splined washer adaptor. If tabs and notches do not align, tighten nut further to align. Do not exceed 275 N-m (200 ft.lbs.).

12. Install front tire and wheel assembly.

13. Remove support from front of vehicle.

14. Install Campaign Identification Label.

Figure 2(Group 2 Vehicles):

Group 2 (VIN KU300996 - KU301851)

1. Support front of vehicle with floor jack. Lift vehicle just enough to permit the removal of the front wheels (see Section OA of the 1989 Toronado Service Manual for hoisting information).

2. Remove front tire and wheel assembly.

3. Remove drive axle nut and washer and discard.

For Steps (4) and (5), refer to Figure 2.

4. Install new washer (P/N 10049691).

5. Install new torque prevailing nut (P/N 14035592) and torque to 245 N-m (180 ft.lbs.).

IMPORTANT: Use torque wrench to tighten drive axle nut to specification.

6. Install front tire and wheel assembly.

7. Remove support from front of vehicle.

8. Install Campaign Identification Label.