Differential Replacement 10.5 Inch, 11.5 Inch Axle
Tools Required
J 24429
Side Bearing Backlash Spanner
Removal Procedure
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Remove the axle shafts. Refer to
Rear Axle Shaft and/or Gasket Replacement
.
- Remove the rear axle housing cover and the gasket. Refer to
Rear Axle Housing Cover and Gasket Replacement
.
- Remove the differential bearing adjuster
nut retainers.
- Remove the bearing caps and bolts. Mark the bearing
caps left and right.
Caution: To prevent personal injury and/or component damage, support the differential
case when removing the case from the axle housing. If the case is not supported,
the differential case could fall and cause personal injury or damage to the
differential case.
Notice: When removing the differential case from the axle housing, do not damage
the cover gasket surface. If the cover gasket surface is damaged, lubricant
may leak from the axle and cause premature failure of the axle assembly.
- Loosen the adjusters using the
J 24429
.
- Remove the differential.
- Remove the bearing cups.
Mark the cups left and right. Place the cups with the bearing caps.
- Remove the differential side bearings, if necessary. Refer to
Differential Side Bearings Replacement
.
- Remove the ring gear, if necessary. Refer to
Drive Pinion and Ring Gear Replacement
.
Installation Procedure
- Install the ring gear, if necessary. Refer to
Drive Pinion and Ring Gear Replacement
.
- Install the differential side bearings, if necessary. Refer to
Differential Side Bearings Replacement
.
- Lubricate the differential side bearings with axle lubricant. Use the proper fluid. Refer to
Fluid and Lubricant Recommendations
.
- Place the case, with the bearing cups installed, into the axle housing.
Support the case in order to keep the case from falling out of the axle housing.
- Install the bearing caps and the bolts.
Do not torque the bearing cap bolts at this time.
- Turn the adjusters evenly on each side using the
J 24429
until snug against the differential.
- Adjust the differential side bearing preload. Refer to
Differential Carrier Bearing Preload Adjustment
.
- Adjust the backlash. Refer to
Backlash Adjustment
.
- Perform a gear tooth contact pattern check. Refer to
Gear Tooth Contact Pattern Inspection
.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Tighten the bearing cap bolts.
Tighten
• | Tighten the bearing cap bolts to 185 N·m (136 lb ft) (10.5 inch axle). |
• | Tighten the bearing cap bolts to 207 N·m (153 lb ft) (11.5 inch axle). |
- Install the axle shafts and new gaskets. Refer to
Rear Axle Shaft and/or Gasket Replacement
.
- Install the rear axle housing cover and a new gasket. Refer to
Rear Axle Housing Cover and Gasket Replacement
.
- Fill the axle with lubricant. Use the proper fluid. Refer to
Approximate Fluid Capacities
and
Fluid and Lubricant Recommendations
.
- Lower the vehicle.
Differential Replacement 8.6, 9.5/9.5LD Inch Axles
Tools Required
J 24429
Side Bearing Backlash Spanner
Removal Procedure
Important: Group and mark the shims together as originally removed. If you remove or replace the ring and pinion gear set, perform the bearing preload, backlash, and gear tooth contact pattern check in order to ensure proper contact
of the gears. If you reinstall or replace the differential carrier without replacing any other component (i.e. pinion and ring gear set, bearings. etc.) then you may reinstall the carrier with the original shims in their original locations. Always perform a
gear tooth contact pattern check, even when you remove only the carrier.
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Remove the axle shafts. Refer to
Rear Axle Shaft Replacement
.
- Remove the differential bearing adjuster
nut lock (9.5/9.5LD inch axle - right side).
Caution: Refer to Differential Case Removal Caution in the Preface section.
- Remove the bearing cap bolts.
- Remove the bearing caps. Mark the bearing caps left and right.
- For the 8.6 inch axle, install the pinion shaft into the differential case part way and rotate the differential
assembly until the pinion shaft contact the top of the axle housing.
Notice: Refer to Differential Housing Cover and Gasket Removal Notice in the Preface section.
- For the 8.6 inch axle, rotate the drive pinion clockwise in order to force the differential assembly out of the axle housing.
- For the 9.5/9.5LD inch axle, loosen the differential bearing adjuster nut using the
J 24429
.
- Remove the differential assembly.
- Remove the bearing cups, the shims, and the spacers as necessary.
Mark the cups and shims left and right and in the proper order as necessary. Place the cups and the shims with the bearing caps.
- Remove the differential side bearings, if necessary. Refer to
Differential Side Bearings Replacement
.
- Remove the ring gear, if necessary. Refer to
Drive Pinion and Ring Gear Replacement
.
Installation Procedure
- Install the ring gear, if necessary. Refer to
Drive Pinion and Ring Gear Replacement
.
- Install the differential side bearings, if necessary. Refer to
Differential Side Bearings Replacement
.
- Lubricate the differential side bearings with axle lubricant. Use the proper fluid. Refer to
Fluid and Lubricant Recommendations
.
- Place the case, with the bearing cups installed, into the axle housing.
Support the case in order to keep the case from falling out of the axle housing.
- Install the bearing caps and the bolts. Do not torque
the bearing cap bolts at this time.
- Adjust the differential side bearing preload. Refer to
Differential Carrier Bearing Preload Adjustment
.
- Adjust the backlash. Refer to
Backlash Adjustment
.
- Perform a gear tooth contact pattern check. Refer to
Gear Tooth Contact Pattern Inspection
.
Notice: Refer to Fastener Notice in the Preface section.
- Tighten the bearing cap bolts.
Tighten
• | For the 8.6 inch axle, tighten the bearing cap bolts to 75 N·m (55 lb ft) |
• | For the 9.5/9.5LD inch axle, tighten the bearing cap bolts to 85 N·m (63 lb ft) |
- Install the axle shafts. Refer to
Rear Axle Shaft Replacement
.
- Fill the axle with the proper lubricant. Refer to
Rear Axle Lubricant Replacement
.
- Lower the vehicle.