Hummer H2. Manual - part 2550

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Surface finish damage  

3. Install the forward sprag assembly (642) into the forward clutch outer race (644). 

Fig. 172: View Of Sprag Assembly Retainer Rings 
Courtesy of GENERAL MOTORS CORP. 

4. Inspect the sprag assembly retainer rings (643) for wear or damage. 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

5. Install the sprag assembly retainer rings (643) into the forward clutch sprag assembly (644). 

Fig. 173: Inspection Areas On Forward Sprag Clutch Inner Race And Input Sun Gear Assembly 
Courtesy of GENERAL MOTORS CORP. 

6. Inspect the forward sprag clutch inner race and input sun gear assembly (640) for the following 

conditions: 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

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Damaged spline or gear teeth  

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Ring groove damage  

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Surface finish damage  

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Loose retainer  

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Wear  

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Cracks  

7. Install the forward sprag clutch inner race and input sun gear assembly (640) into the forward sprag and 

outer race assembly. 

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E

  

Fig. 174: Locating Overrun Clutch Hub 
Courtesy of GENERAL MOTORS CORP. 

8. Inspect the overrun clutch hub (639) for the following conditions: 

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Spline damage  

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Plugged lubrication holes  

 

2004 Hummer H2 

2004 TRANSMISSION/TRANSAXLE Automatic Transmission - Overhaul - 4L60-E/4L65-E