Hummer H2. Manual - part 2350

Fig. 427: 3-4 Accumulator Spring & Piston 
Courtesy of GENERAL MOTORS CORP. 

3. Install the 3-4 accumulator piston (44) and seal assembly into the bore.  

4. Inspect the 3-4 accumulator spring (46) for cracks. 

5. Install the 3-4 accumulator spring.  

1-2 ACCUMULATOR DISASSEMBLE 

IMPORTANT: Some models do not use a 3-4 accumulator spring.

 

2004 Hummer H2 

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

  

Fig. 428: Identifying Accumulator Housing, Accumulator Piston, 1-2 Inner & Outer Accumulator 
Springs 
Courtesy of GENERAL MOTORS CORP. 

1. Blow air into the 1-2 accumulator housing (57) to remove the 1-2 accumulator piston (56).  

2. Remove the 1-2 inner (104) and outer (54) accumulator springs.  

1-2 ACCUMULATOR ASSEMBLE 

 

2004 Hummer H2 

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

  

Fig. 429: Inspecting 1-2 Accumulator Piston 
Courtesy of GENERAL MOTORS CORP. 

1. Inspect the 1-2 accumulator piston (56) for the following conditions: 

z

Porosity  

z

Cracks  

z

Scoring  

z

Nicks and Scratches  

2. Install a 1-2 accumulator piston oil seal ring (55) on the 1-2 accumulator piston (56). 

 

2004 Hummer H2 

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

  

Fig. 430: Inspecting 1-2 Accumulator Housing 
Courtesy of GENERAL MOTORS CORP. 

3. Inspect the 1-2 accumulator housing for the following conditions: 

z

Porosity  

z

Cracks  

z

Scoring  

z

Nicks and Scratches  

z

Debris or blocked passages  

 

2004 Hummer H2 

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