Rear Axle Shaft Replacement (9.75 Inch Axle W/RPO JL4)

Rear Axle Shaft Replacement (9.75 Inch Axle W/RPO JL4)

Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair) .
3. Remove the rear wheel speed sensor. Refer to Wheel Speed Sensor Replacement (2WD) Wheel Speed Sensor Replacement (4WD) .
4. Remove the brake caliper bracket. Refer to Rear Brake Caliper Bracket Replacement (15/25 Series) Rear Brake Caliper Bracket Replacement (35 Series) .
5. Remove the rear axle housing cover and the gasket. Refer to Rear Axle Housing Cover and Gasket Replacement (8.6 Inch Axle) (Rear Axle Housing Cover and Gasket Replacement (8.6 Inch Axle))Rear Axle Housing Cover and Gasket Replacement (9.75, 10.5 and 10.75 Inch Axles) (Rear Axle Housing Cover and Gasket Replacement (9.75, 10.5 and 10.75 Inch Axles)) .




6. Remove the pinion shaft locking bolt.




7. On axles without a locking differential, remove the pinion shaft.




8. On axles with a locking differential, remove the shaft part way. Rotate the case until the pinion shaft touches the housing.




9. On axles with a locking differential, use a screwdriver, or a similar tool, in order to enter the differential case and rotate the rear axle shaft lock (1) until the lock aligns with the thrust block opening (2).
10. Push the flange of the axle shaft into the axle housing.




11. Remove the rear axle shaft lock from the button end of the axle shaft.





Important: When removing the axle shaft, do not rotate the shaft. Rotating the shaft will misalign the gears. Misaligning the gears will make assembly difficult.


12. Remove the axle shaft from the housing.



Installation Procedure






Important: Carefully insert the axle shaft in order to not damage the seal.


1. Install the axle shaft into the rear axle housing.
Rotate the axle shaft as necessary in order to align the axle shaft splines with the differential side gear splines and engage the differential side gear.




2. On axles without a locking differential, place the rear axle shaft lock on the button end of the axle shaft.




3. On axles with a locking differential, install the rear axle shaft lock (1) on the axle shaft (3) so that the ends are flush with the thrust block (2) as shown.
4. Pull the shaft flange outward in order to seat the rear axle shaft lock in the differential side gear.
5. Install the pinion shaft into the differential case.
Align the hole in the pinion shaft with the bolt hole in the differential case.





Notice: Refer to Fastener Notice .

6. Install the new pinion shaft locking bolt.

* For the 8.6 inch axle, tighten the pinion shaft locking bolt to 36 N.m (27 lb ft).
* For the 9.75 inch axle, tighten the pinion shaft locking bolt to 27 N.m (20 lb ft).


7. Install the rear axle housing cover and the gasket. Refer to Rear Axle Housing Cover and Gasket Replacement (8.6 Inch Axle) (Rear Axle Housing Cover and Gasket Replacement (8.6 Inch Axle))Rear Axle Housing Cover and Gasket Replacement (9.75, 10.5 and 10.75 Inch Axles) (Rear Axle Housing Cover and Gasket Replacement (9.75, 10.5 and 10.75 Inch Axles)) .
8. Install the brake caliper bracket. Refer to Rear Brake Caliper Bracket Replacement (15/25 Series) Rear Brake Caliper Bracket Replacement (35 Series) .
9. Install the rear wheel speed sensor. Refer to Wheel Speed Sensor Replacement (2WD) Wheel Speed Sensor Replacement (4WD) .
10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair) .
11. Fill the rear axle. Use the proper fluid. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations .
12. Lower the vehicle.