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Chevrolet Silverado / GMC Sierra. Manual - part 1127
Courtesy of GENERAL MOTORS CORP.
4. Inspect the sprag assembly retainer rings (643) for wear or damage.
5. Install the sprag assembly retainer rings (643) into the forward clutch sprag assembly (644).
Fig. 383: Inspection Areas On Forward Sprag Clutch Inner Race And Input Sun
Gear Assembly
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Courtesy of GENERAL MOTORS CORP.
6. Inspect the forward sprag clutch inner race and input sun gear assembly (640) for the
following conditions:
Damaged spline or gear teeth
Ring groove damage
Surface finish damage
Loose retainer
Wear
Cracks
7. Install the forward sprag clutch inner race and input sun gear assembly (640) into the
forward sprag and outer race assembly.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 384: Locating Overrun Clutch
Courtesy of GENERAL MOTORS CORP.
8. Inspect the overrun clutch hub (639) for the following conditions:
Spline damage
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Plugged lubrication holes
Damaged tangs
Cracks
9. Install the overrun clutch hub (639) onto the sprag clutch inner race and input sun gear
assembly (640).
10. Install the overrun clutch hub retaining snap ring (638).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
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