- Clean all of the dirt from the area of the rear axle housing cover
before removing the rear axle housing cover.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Remove the rear axle housing cover.
Refer to
Rear Axle Housing Cover and Gasket Replacement
.
- Wipe the oil out of the rear axle housing.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Carefully clean each tooth of the ring gear.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Select the correct exciter ring protector from the J 39446
Attach the exciter ring protector to the speed sensor reluctor wheel
on vehicles with non-traction control rear axles only.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Use a medium stiff brush in order to apply a mixture of gear marking
compound sparingly to all of the ring gear teeth.
Visibility of the area of the differential drive pinion gear contact
identifies proper usage when a hand load is applied.
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 differential
carrier bearing cap bolts/screws.
Tighten
Tighten the differential carrier bearing cap bolts/screw to 75 N·m
(55 lb ft).
- Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Apply the park brake until a torque of 54-70 N·m
(40-52 lb ft) is required in order to turn the drive pinion
gear (16 or 14).
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
Important: A test made without loading the gears will not give a satisfactory pattern.
- Use the following procedure in order to obtain a ring gear tooth contact
pattern:
| 9.1. | Turn the pinion gear yoke with a wrench so that the ring gear
rotates one full revolution. |
| 9.2. | Reverse the rotation so that the ring gear rotates one revolution
in the opposite direction. |
- Inspect the differential
ring gear teeth for a low flank contact pattern (2).
- Decrease the differential drive pinion gear bearing shim thickness
in order to repair low flank contact if a low flank contact pattern (2) exists.
Decreasing the differential drive pinion gear shim thickness moves the
smaller diameter of the differential drive pinion gear contact (2) out toward
the differential ring gear center line (1).
- Inspect the differential
ring gear teeth for
a heel contact pattern (1).
- Decrease the backlash in order to repair heel contact if a heel
contact pattern (1) exists.
Decreasing the backlash moves the area of differential drive pinion
gear contact (1) toward the toe.
- Inspect the differential
ring gear teeth for a high face contact pattern (2).
- Increase the differential drive pinion gear bearing shim thickness
in order to repair high face contact if a high face contact pattern (2) exists.
Increasing the differential drive pinion gear shim thickness moves the
area of differential drive pinion gear contact (2) out toward the differential
ring gear center line (1).
- Inspect the differential
ring gear teeth for a toe contact pattern (1).
- Increase the backlash in order to repair heel contact if a toe
contact pattern (1) exists.
Increasing the backlash moves the area of differential drive pinion
gear contact (1) toward the heel.
- Inspect the differential
ring gear teeth for a desired tooth contact pattern (1).
- Verify that the area of differential drive pinion gear contact
(1) remains in the center of the differential ring gear tooth.
- If the differential ring gear tooth pattern is acceptable, remove
the J 39446
.
- Install the rear axle housing cover.
Refer to
Rear Axle Housing Cover and Gasket Replacement
