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Chevrolet Silverado / GMC Sierra. Manual - part 1125
Fig. 375: View Of Input Housing To Output Shaft Seal
Courtesy of GENERAL MOTORS CORP.
Install a new input housing to output shaft seal (636).
OVERRUN CLUTCH INSTALLATION
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 376: Identifying Overrun Clutch Plates
Courtesy of GENERAL MOTORS CORP.
1. Inspect the fiber plate assemblies (645B) and the steel plates (645A) for the following
defects:
Damaged tangs
Delamination
Excessive wear
Wear or heat damage
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 377: Aligning Overrun Clutch Plates
Courtesy of GENERAL MOTORS CORP.
2. Install the overrun clutch plates into the input housing starting with a steel plate (645B) and
alternating with fiber plate assemblies (645A).
3. Index the plates in the input housing with the wide notches remaining open.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Fig. 378: Input Sun Gear Bearing Assembly
Courtesy of GENERAL MOTORS CORP.
4. Install the input sun gear bearing assembly (637) into the input housing.
FORWARD CLUTCH SPRAG DISASSEMBLE
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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