Drive Pinion Bearings Replacement 10.5 Inch Axle
Tools Required
• | J 22761
Differential Side Bearing Installer |
• | J 24433
Pinion Cone and Side Bearing Installer |
• | J 44414
Rear Axle Pinion Oil Seal Installer |
• | J 8608
Rear Pinion Bearing Installer |
• | J 8092
Universal Driver Handle - ¾ in - 10 |
Removal Procedure
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the differential assembly. Refer to
Differential Replacement.
- Remove the pinion gear bearing retainer. Refer to
Drive Pinion Housing and/or Seal Replacement.
- Remove the pinion yoke and the oil seal. Refer to
Drive Pinion Housing and/or Seal Replacement.
- Remove the outer pinion bearing.
- Remove the pinion.
- Remove the collapsible spacer.
- Remove the inner pinion bearing from the pinion using the
J 22912-B
and a hydraulic press.
- Remove the outer pinion bearing cup using a hammer and a brass drift in the slots
provided.
Move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
- Remove the inner pinion bearing cup using a hammer and a brass drift in the slots
provided.
Move the drift back and forth between one side of the cup and the other in order to work the cups out of the retainer evenly.
- Remove the pinion gear pilot bearing using a brass drift and a hammer.
Installation Procedure
- Install the pinion gear pilot bearing using the
J 22761
.
- Install the inner pinion bearing cup into the pinion gear bearing retainer using
the
J 37624
(2) and the
J 8092
(1).
- Install the outer pinion bearing cup into the pinion
gear bearing retainer using the
J 8608
(2) and the
J 8092
(1).
- Install the inner pinion bearing using the
J 24433
.
Press the bearing on until the cone seats on the pinion.
- Install a new collapsible spacer.
- Lubricate the pinion bearings with axle lubricant. Use the proper fluid. Refer to
Fluid and Lubricant Recommendations.
- Install the outer pinion bearing into the pinion bearing retainer.
- Install a new pinion oil seal using the
J 44414
.
- Install the pinion into the pinion gear bearing retainer.
- Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion yoke.
- Install the pinion yoke.
Align the marks made during removal.
Notice: Refer to Pinion Flange/Yoke Installation Notice in the Preface section.
- Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few threads show through the yoke.
- Install the washer and a new pinion nut.
- Install the
J 8614-01
onto
the pinion yoke.
Notice: Refer to Fastener Notice in the Preface section.
Important: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
- Tighten the pinion nut while holding the
J 8614-01
.
Tighten
Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
- Remove the
J 8614-01
.
Important: Do not apply sealant to the pinion gear bearing retainer at this time.
- Install the original shim to the pinion bearing retainer. If the original shim is not available, install a 0.41 mm (0.016 in) shim to build pinion depth.
- Install the pinion gear bearing retainer to the axle housing.
- Install the pinion bearing retainer bolts.
Tighten
Tighten the pinion gear retainer bolts to 88 N·m (65 lb ft).
- Measure the rotating torque of the pinion using an inch-pound torque wrench.
Specification
The rotating torque of the pinion should be between 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m (15-30 lb in) for new bearings
.
- If the rotating torque measurement is below 1.0 N·m (10 lb in) for used bearings, or 1.7 N·m (15 lb in) for new bearings, install the
J 8614-01
and
continue to tighten the pinion nut.
Tighten
Tighten the pinion nut, in small increments, as needed, until the torque required in order to rotate the pinion is between 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m
(15-30 lb in) for new bearings.
- Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.
Recheck the rotating torque and adjust if necessary.
- Install the differential assembly. Refer to
Differential Replacement.
- Adjust the differential side bearing preload. Refer to
Differential Carrier Bearing Preload Adjustment.
- Determine the selective shim thickness for the drive pinion. Refer to
Pinion Depth Adjustment.
- Adjust the backlash. Refer to
Backlash Adjustment.
- Fill the axle with lubricant. Use the proper fluid. Refer to
Rear Axle Lubricant Replacement.
- Lower the vehicle.
Drive Pinion Bearings Replacement 8.6, 9.5/9.5LD, and 11.5 Inch Axles
Special Tools
• | J 7818
Inner Bearing Race Installer |
• | J 8092
Universal Driver Handle - ¾ in - 10 |
• | J 8611-01
Rear Pinion Bearing Race Installer |
• | J 22306
Pinion Cup Bearing Installer - Rear |
• | J 22828
Input/Counterbalance Race Installer |
• | DT-47688
Pinion Bearing Remover, 8.6 Inch Axle Installer |
• | J 36614
Inner Pinion Bearing Installer |
• | J 45870
Pinion Bearing Cup Installer |
Removal Procedure
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the differential assembly. Refer to
Differential Replacement.
- Remove the drive pinion from the axle. Refer to
Drive Pinion and Ring Gear Replacement.
- Using the
DT-47688
and a press, remove the bearing from the drive pinion.
- Remove the shim.
Important: Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly.
- Using a hammer and a brass drift in the slots provided, remove the outer pinion bearing cup from the axle housing.
Important: Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly.
- Using a hammer and a brass drift in the slots provided, remove the outer pinion bearing cup from the axle housing.
Installation Procedure
- Using the
J 8611-01
, 8.6 inch axle, or the
J 7818
, 9.5/9.5LD inch axle (1), and the
J 8092
(2), install the outer pinion bearing
cup.
- Using the
J 45870
, 8.6 inch
axle, or the
J 22306
, 9.5/9.5LD inch axle (2), and the
J 8092
(1), install the inner pinion bearing cup.
- Determine the selective shim thickness for the drive pinion. Refer to
Pinion Depth Adjustment.
- Install the selective shim between the inner pinion bearing and the shoulder on the gear.
Important: Press the bearing on until the cone seats on the pinion shim.
- Using the
J 22828
or the
J 36614
, install the inner pinion bearing.
- Install a new collapsible spacer.
- Lubricate the pinion bearings with axle lubricant. Use the proper fluid. Refer to
Fluid and Lubricant Recommendations.
- Install the outer pinion bearing into the axle housing.
- Using the
J 22388
, install
a new pinion oil seal.
- Install the pinion into the axle housing.
- Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion yoke.
Important: Align the reference marks made during the removal procedure.
- Install the pinion yoke.
Notice: Refer to Pinion Flange/Yoke Installation Notice in the Preface section.
- Using a soft-faced hammer, seat the pinion yoke onto the pinion shaft by tapping it a until a few threads show through the yoke.
- Install the washer and a new pinion nut.
Notice: Refer to Fastener Notice in the Preface section.
Important: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.
- Using the
J 8614-01
, hold and tighten the pinion nut.
Tighten
Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
- Using an inch-pound torque wrench, measure the rotating torque of the pinion.
Specification
The rotating torque of the pinion should be between 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m (15-30 lb in) for new bearings
.
- If the rotating torque measurement is below 1.0 N·m (10 lb in) for used bearings, or 1.7 N·m (15 lb in) for new bearings, continue to tighten the pinion nut.
Tighten
Tighten the pinion nut, in small increments, until the torque required in order to rotate the pinion is between 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m
(15-30 lb in) for new bearings.
- Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.
- Recheck the rotating torque of the pinion bearing and adjust if necessary
- Install the differential assembly. Refer to
Differential Replacement.
- Fill the axle with lubricant. Use the proper fluid. Refer to
Rear Axle Lubricant Replacement.
- Remove the support and lower the vehicle.