Differential Case Assembly Disassemble
DIFFERENTIAL CASE ASSEMBLY DISASSEMBLETOOLS REQUIRED
- J22888-D Side Bearing Remover Kit
- J 36597 Side Bearing Puller Pilot - 9.25 in Axle
1. Remove the differential side bearing by performing the following steps:
1.1. Place the differential case in a vise.
1.2. Install the J 22888-20A (2) and the J 36597 (1) as shown.
1.3. Remove the differential side bearings using the J 22888-20A.
2. Remove the differential assembly from the vise.
IMPORTANT: The ring gear bolts have left-hand threads.
3. Remove the ring gear bolts. Discard the bolts.
NOTE: Do not pry the ring gear from the differential case. Prying the ring gear from the differential case may cause damage to the ring gear and/or the differential case.
4. Remove the ring gear from the differential case.
Drive the ring gear off with a brass drift if necessary.
5. Remove the pinion shaft lock bolt.
6. Remove the pinion shaft.
7. Remove the differential side gear spacers.
8. Remove the differential pinion gears and thrust washers by performing the following steps:
8.1. Drive the pinion gear thrust washers out from the differential case using a hammer and a brass drift.
8.2. Roll the differential pinion gears out of the differential case.
Mark the pinion gears and thrust washers top and bottom.
9. Remove the differential side gears and thrust washers.
Mark the differential side gears and thrust washers left and right.
Differential Case Bearings Inspection
IMPORTANT:
- When replacing the worn or cracked bearings and the cups, replace the bearings in sets.
- The low mileage bearings may have very small scratches and pits on the rollers and the bearing cups from the initial preload.
Do not replace a bearing for this reason.
1. Inspect the bearings for smooth rotation after oiling.
2. Inspect the bearing rollers for wear.
3. Inspect the bearing cups for the following conditions:
- Wear
- Cracks
- Brinelling
- Scoring
Differential Case And Gears Inspection
1. Inspect the following components for excessive wear and/or fit:
- The pinion gear shaft
- The thrust washers
- The differential case for wear, cracks and scoring
- The fit of the pinion gear shaft in the differential case
- The fit of the differential side gears in the differential case
- The fit of the side gears on the axle shafts
2. Inspect the teeth of the pinion gears and the differential side gears for the following conditions
- Wear
- Cracks
- Scoring
- Spalling
3. Replace any worn or poor fitting components as necessary
Pinion And Ring Gear Inspection
1. The ring and pinion gears are matched sets and must be replaced any time a replacement of either is necessary
2. Inspect the pinion and the ring gear teeth for the following conditions
- Cracking
- Chipping
- Scoring
- Excessive wear
3. Inspect the pinion gear splines for wear
4. Inspect the pinion flange splines for wear
5. Inspect the fit of the pinion flange on the pinion gear
6. Inspect the sealing surface of the pinion flange for nicks, burrs, or rough tool marks which will damage the inside diameter of the pinion seal and result in an oil leak
7. Inspect all of the parts for wear and replace as necessary
Thrust Washers, Shims, and Adjuster Sleeves Inspection
1. Inspect the shims and the thrust washers for cracks and chips
The damaged shims should be replaced with an equally sized service shim
2. Inspect the adjuster sleeves for damaged threads Replace if required