Hummer H2. Manual - part 2563

12. Install the pump vanes (213).  

13. Install the top pump vane ring (210).  

OIL PUMP COVER DISASSEMBLE 

Fig. 222: View Of Reverse Boost Valve & Pressure Regulator Components 

 

2004 Hummer H2 

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

  

Courtesy of GENERAL MOTORS CORP.

1. Remove the oil pump reverse boost valve retaining ring (221).  

2. Remove the reverse boost valve sleeve (220) and the reverse boost valve (219).  

3. Remove the pressure regulator isolator spring (218) and the pressure regulator valve spring (217).  

4. Remove the pressure regulator valve (216). 

Fig. 223: Locating Converter Clutch Valve 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the oil pump converter clutch valve retaining ring (222).  

6. Remove the stop valve (223) and the converter clutch valve (224).  

7. Remove the converter clutch valve inner (225) and outer (226) springs. 

 

2004 Hummer H2 

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

  

Fig. 224: Removing Oil Pump Cover Screen & Pressure Relief Components 
Courtesy of GENERAL MOTORS CORP. 

8. Remove the pressure relief bolt rivet (227).  

9. Remove the pressure relief spring (229) and the pressure relief ball (228).  

10. Remove the oil pump cover screen (232) and the oil pump cover screen seal (231). 

 

2004 Hummer H2 

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

  

Fig. 225: Locating Stator Shaft Oil Seal Rings 
Courtesy of GENERAL MOTORS CORP. 

11. Remove the stator shaft oil seal rings (230).  

OIL PUMP STATOR SHAFT BUSHING REPLACEMENT 

Removal Procedure 

Tools Required 

 

2004 Hummer H2 

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