Hummer H2. Manual - part 2521

Fig. 59: Checking End Play With J 8001 
Courtesy of GENERAL MOTORS CORP. 

6. Set the J 8001 to zero.  

7. Pull up on J 24773-A . 

Proper end play should be 0.13-0.92 mm (0.005-0.036 in). 

8. The selective washer (616), which controls the end play, is located between the input housing (621) and 

the thrust bearing (615) on the oil pump hub. 

If the end play measurement is incorrect, refer to End Play Specifications . Choose a new selective 
washer (616) based on the original selective washer and the information contained in the table.

 

2004 Hummer H2 

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

  

If the dial indicator shows no end play, the selective washer (616) and thrust bearing (615) may have been 
misassembled. 

9. Correct the end play by changing the selective washer (616).  

OIL PUMP REMOVAL 

Tools Required 

z

J 37789-A Oil Pump Remover/Installer. See Special Tools and Equipment .  

z

J 39119 Oil Pump Remover/Installer Adapter. See Special Tools and Equipment .  

 

2004 Hummer H2 

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

  

Fig. 60: Locating Pump Bolts 
Courtesy of GENERAL MOTORS CORP. 

1. Remove all pump bolts (2).  

2. Install J 39119 over stator shaft until it locks under splines.  

3. Install J 37789-A . 

 

2004 Hummer H2 

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

  

Fig. 61: Installing J 37789-A & J 39119 
Courtesy of GENERAL MOTORS CORP. 

4. To prevent slipping, securely fasten the J 37789-A around the J 39119 by tightening the bolt (1) with a 

wrench.  

5. Turn the T-handle on top of J 37789-A .  

6. Lift the pump out of the case. 

 

2004 Hummer H2 

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