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 Inch Axles
Tools Required
• | J 7818
Inner Bearing
Race Installer |
• | J 8092
Universal Driver
Handle - ¾ in - 10 |
• | J 8611-01
Rear Pinion
Bearing Race Installer |
• | J 22306
Rear Pinion
Cup Bearing Installer |
• | J 24433
Pinion Cone
and Side Bearing Installer |
• | J 36614
Inner Pinion
Bearing Installer |
• | J 45870
Pinion Bearing
Cup Installer |
Removal Procedure
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle in General Information.
- Remove the differential assembly. Refer to
Differential Replacement.
- Remove the drive pinion from the axle. Refer to
Drive Pinion and Ring Gear Replacement.
- For the 8.6 inch axle, install the
J 45871
(1) around the pinion bearing and the
J 22912-B
(2) in the inverted position around
the
J 45871
.
- Press the bearing off of the pinion using the
J 45871
and the
J 22912-B
.
- For the 9.5/9.5LD inch and 11.5 inch
axles, press the bearing off of the drive pinion using the
J 22912-B
.
- Remove the shim.
- Remove the outer pinion bearing cup from the axle housing 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 housing evenly.
- Remove the inner pinion bearing cup from the axle housing 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 housing evenly.
Installation Procedure
- Install the outer pinion bearing cup 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 inner 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).
- 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.
- Install the inner pinion bearing using the
J 24433
or the
J 36614
.
Press the bearing on until the
cone seats on the pinion shim.
- Install a new collapsible spacer.
- Lubricate the pinion bearings with axle lubricant. Use the proper fluid.
Refer to
Fluid and Lubricant Recommendations in
Maintenance and Lubrication.
- Install the outer pinion bearing into the axle housing.
- Install a new pinion oil seal using the
J 22388
.
- 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.
- 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 as shown.
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.
- 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,
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.
- Fill the axle with lubricant. Use the proper fluid. Refer to
Rear Axle Lubricant Replacement.
- Lower the vehicle.