Locking/Limited Slip

Locking Differential Disassemble

Removal Procedure

Tools Required
- J 26252 Governor Remover




1. Remove the governor bushing using J 26252.




2. Remove the E-clips that hold the latching bracket on the shaft. Move the bracket down the shaft.
3. Remove the latching bracket bushing using the J 26252.
4. Remove the latching bracket, the shaft, and the spring from the case.
5. Remove the governor assembly from the case.
6. Remove the lock screw.
7. Remove the pinion shaft.
8. Remove the differential pinion gear and pinion thrust washer. Rotate one of the side gears and roll the gears out of the case.
9. Remove the thrust block and the right side gear.
10. Remove the right clutch plates and the side thrust washer.
11. Remove the left side gear, the cam plate, and the clutch plates as an assembly (cam unit).
12. Remove the side gear thrust washer.

Locking Differential Cam Unit Disassemble

Removal Procedure

1. Remove the retaining ring using snap ring pliers.




2. Remove the clutch plates and the guide clips.

Installation Procedure
1. Install the cam plate to the side cam gear.
2. Install the wave washer.
3. Install the clutch plates (7 5/8 ring gear = 8 plates, 8 1/2 ring gear = 10 plates). Alternate the plates.




4. Install the retaining ring (18).
5. Install the guide clips (13) and (16) to the clutch plates. Use grease in the clips in order to hold the clips in place on the plates.

Locking Differential Cleaning and Inspection

1. Clean all of the parts using an approved solvent.
2. Visually inspect all the parts for excessive wear or breakage Replace the parts if necessary.
3. Check the pinion gear and the side gear teeth for any the following conditions:
- Wear
- Cracks
- Scoring
- Spalling
4. Check the thrust washer for wear.
5. Check the fit of the side gears on the axle shafts.
6. Check the differential case for cracks and scoring.

Important: Do not replace the thrust sleeve unless this is necessary.

7. Check the thrust sleeve for excessive wear.
8. Check the side gear bore for scoring. if scoring is present, replace the entire differential.
9. Replace the differential if you find any damage to the case.

Locking Differential Cam Unit Assemble

1. Install the cam plate to the side cam gear.
2. Install the wave washer.




3. Install the clutch plates.
Alternate the plates as shown.
4. Install the thrust sleeve.
Press the thrust sleeve flush with the side gear disc splines.
5. Install the guide clips to the clutch plates.
6. Install the guide clips to the clutch plates.
1. Use grease in the clips in order to hold the clips in place on the plates.
2. If the side cam gear or the side thrust sleeve has been replaced, measure and record the overall length of the gear assembly from the front of the gear to the back of the side thrust sleeve, including the side gear thrust washer
3. Compare the reading with the reading obtained earlier in this section.
4. If the new reading is more than 0.0762 mm (0.003 in) higher or lower than the original, select a thrust washer that will return the reading closest to the original reading.

Locking Differential Adjustment

1. Assemble the clutch plates. Alternate the plates as shown.
2. Assemble the guide clips and to the plates. Use grease in order to hold the clips in place on the plates.
3. Install the side gear thrust washer, the clutch plate assembly and the right side gear to the differential.
4. Place the pinion gears and the thrust washers into the differential.
5. Align the gears and the washers with the pinion shaft hole.
6. Press down on the side gear. Install the pinion shaft and the lock screw. Use a thinner side gear thrust washer if you can not press the side gear down far enough to install the pinion shaft.
7. Rotate the pinion gear closest to the lock screw so that one of the teeth is pointing downward (perpendicular to the ring gear flange).
8. Insert a large tapered tool, such as a screwdriver, firmly between the side gear and the pinion shaft.




9. Mount and zero in a dial indicator to the ring gear flange. Place the stem of the indicator on one of the teeth of the pinion gear closest to the lock screw.
10. Pull the pinion gear firmly into the gear's seat. Rotate the gear back and forth while reading the dial indicator. Record the reading.
11. Repeat steps 7 through 9 for the opposite pinion gear.
12. The backlash should be between 0.051- 0.243 mm (0.002-0.010 in).
13. Use a thicker side gear thrust washer if the backlash is too high. Use a thinner washer if the backlash is too low.

Locking Differential Assemble

1. Install the left side gear thrust washer.
2. Install the cam unit. Refer to Locking Differential Cam Unit Disassemble.
3. Install the right side gear thrust washer.
4. Install the right clutch plates with the guide clips. Assemble the unit as shown.
5. Install the right side gear.
6. Install the thrust block, the pinion thrust washer, and the pinion gear.
1. Place the pinion gears into the differential 180 degrees apart.
2. Rotate the gears and the thrust block into position.
3. The open side of the thrust block must face the small window opening.

Important: Install a new lock screw, finger tight.

7. Install the pinion shaft.
8. Tighten to specifications after installation in the vehicle. Refer to Differential; Specifications; Mechanical; Rear; Standard.





Important: The straight end of the latching bracket spring must be over and outside the governor assembly shaft.

9. Install the governor assembly and the latching bracket bushing.
10. Install the governor bushing.
1. Use the bushing with a straight hole, not tapered.
2. Press the bushing in far enough to give 0.1016-0.508 mm (0.004-0.020 in) shaft end play.
11. Install the latching bracket bushing.
Press the bushing in far enough to eliminate all of the end play.