Hummer H2. Manual - part 2303

Fig. 245: Inspecting 3-4 Accumulator Bore & Orifice Cup Plug 
Courtesy of GENERAL MOTORS CORP. 

4. Inspect the 3-4 accumulator bore and the orifice cup plug (38) for any of the following conditions: 

z

Porosity  

z

Burrs  

z

Blockage  

z

Any other damage  

5. Inspect all bolt holes for thread damage. Use heli-coil to repair damaged threads.  

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

6. Inspect the cooler connectors for damage and proper torque. 

Specification: Cooler connector torque should be 38 N.m (28 lb ft) 

RETAINER AND BALL ASSEMBLY LEAK CHECK 

Installation Procedure 

Tools Required 

J 29714-A Servo Cover Compressor. See Special Tools and Equipment . 

Fig. 246: Installing 2-4 Servo Into Case

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Courtesy of GENERAL MOTORS CORP.

1. Install the 2-4 servo into the case. 

Fig. 247: Using J 29714-A To Compress Servo Cover 
Courtesy of GENERAL MOTORS CORP. 

2. Install oil pan with only four bolts to align pan to case.  

3. Use the J 29714-A in order to compress the servo cover. See Special Tools and Equipment .  

4. Install the servo cover retaining ring. 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Fig. 248: Removing Oil Pan 
Courtesy of GENERAL MOTORS CORP. 

5. Remove oil pan.  

6. Pour solvent into the accumulator bore until the channel is filled. Watch for leaks in the case channel. 

7. If leakage from the oval shaped hole is observed, replace the third accumulator retainer and ball 

assembly.  

IMPORTANT: It is normal to see leakage from the small hole next to the larger oval hole.

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2