Front Drive Inner Shaft and Inner Shaft Housing Replacement (8.25 F4WD)

Front Drive Axle Inner Shaft and Inner Shaft Housing Replacement (8.25 F4WD)

Removal Procedure


1. Raise the vehicle.
2. Drain the differential carrier assembly.

Important: If only replacing the right side inner shaft and/or housing, follow the steps below. If only replacing the left side inner shaft, proceed to step 12.

3. Remove the front shock absorber. Refer to Shock Absorber Replacement.






4. Remove the wheel drive shaft inboard flange bolts from the inner axle shaft.

Important: Support the wheel drive shaft in order to not over flex the constant velocity (CV) joint.

5. Disconnect the wheel drive shaft from the inner axle shaft.






6. Using a hammer and brass drift, disconnect the inner axle shaft from the differential case side gear.






7. Remove the inner axle shaft housing nuts from the bracket.






8. Remove the inner axle shaft housing bolts (2) from the differential carrier assembly.

Important: On vehicles with RPO HP2 (Hybrid), it maybe necessary to maneuver the inner shaft and housing to clear the electric motor for the steering rack.

9. Remove the inner axle shaft (1) and inner axle shaft housing (4) from the vehicle.
10. Remove the inner axle shaft housing gasket (3) from the inner axle shaft housing (4).
11. Remove the inner axle shaft seal and the bearing from the inner axle shaft housing. Refer to Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement.






12. If only replacing the left side inner axle shaft, perform steps 13 thru 15.
13. Remove the wheel drive shaft inboard flange bolts from the inner axle shaft.

Disconnect the wheel drive shaft from the inner axle shaft.

14. Support the wheel drive shaft in order to not over flex the CV joint.
15. Remove the inner axle shaft using a hammer and a brass drift.

Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.






Important: If replacing the left side inner axle shaft, perform steps 1 thru 3.

1. Install the inner axle shaft into the differential case side gear using a soft-faced mallet until the retaining ring on the inner axle shaft is fully seated within the groove in the differential case side gear. Pull back on the inner axle shaft to ensure that the inner axle shaft is properly retained in the differential case side gear.
2. Connect the wheel drive shaft to the inner axle shaft.
3. Install the wheel drive shaft inboard flange to inner axle shaft bolts.

Tighten
Tighten the wheel drive shaft inboard flange to inner axle shaft bolts to 79 Nm (58 lb ft).

4. If the right side inner axle shaft and/or housing was removed, perform steps 5 thru 7.
5. Install the new inner axle shaft bearing and the new seal to the inner axle shaft housing. Refer to Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement.






Important: Do not install the inner axle shaft completely into the inner axle shaft housing at this time.

6. Install the inner axle shaft (1) into the inner axle shaft housing (4).
7. Install the new inner axle shaft housing gasket (3).

Important: For vehicles with RPO HP2 (Hybrid), maneuver the inner shaft and housing to clear the electric motor for the steering rack for installation.

8. Install the inner axle shaft (1) and the inner axle shaft housing (4) to the differential carrier assembly.
9. Install the inner axle shaft housing bolts (2).

Tighten
Tighten the inner axle shaft housing bolts to 40 Nm (30 lb ft).






10. Install the inner axle shaft housing nuts to the bracket.

Tighten
Tighten the inner axle shaft housing nuts to 100 Nm (75 lb ft).

11. Align the splines of the inner axle shaft with the splines on the differential side gear.
12. Install the wheel drive shaft inboard flange to the inner axle shaft.
13. Using a soft-faced mallet, tap on the inner axle shaft until the retaining ring on the inner axle shaft is fully seated within the groove in the differential case side gear.
14. Ensure that the inner axle shaft is properly seated by gently pulling and pushing on the inner axle shaft.






15. Install the wheel drive shaft inboard flange to inner axle shaft bolts.

Tighten
Tighten the wheel drive shaft inboard flange to inner axle shaft bolts to 79 Nm (58 lb ft).

16. Install the front shock absorber. Refer to Shock Absorber Replacement.
17. With either replacement procedure, fill the differential carrier assembly with axle lubricant. Use the correct fluid.
18. Lower the vehicle.