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Chevrolet Silverado / GMC Sierra. Manual - part 1367
Fig. 170: View Of Differential And Pinion Shaft
Courtesy of GENERAL MOTORS CORP.
6. Remove the pinion shaft.
7. Remove the differential side gear spacers.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 171: Identifying Differential Pinion Gears & Thrust Washers
Courtesy of GENERAL MOTORS CORP.
8. Remove the differential pinion gears and thrust washers by performing the following steps:
1. Drive the pinion gear thrust washers out from the differential case using a hammer and
a brass drift.
2. Roll the differential pinion gears out of the differential case.
Mark the pinion gears and thrust washers top and bottom.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 172: Differential Side Gears & Thrust Washers
Courtesy of GENERAL MOTORS CORP.
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.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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
Do not replace a bearing for this reason.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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