Hummer H3. Manual — part 851

Fig. 435: View Of Manual Valve
Courtesy of GENERAL MOTORS CORP.

12. Install the manual valve (340).

3-4 ACCUMULATOR INSTALLATION

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 436: Identifying 3-4 Accumulator Piston & Piston Oil Seal Ring
Courtesy of GENERAL MOTORS CORP.

1. Inspect the 3-4 accumulator piston (44) for the following conditions:

Porosity

Cracks

Scoring

Nicks and scratches

2. Install the 3-4 accumulator piston oil seal ring (45) on the 3-4 accumulator piston (44).

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 437: Identifying 3-4 Accumulator Piston & Accumulator Spring
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.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 438: View Of Accumulator Housing
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

IMPORTANT: Some models may not use an outer 1-2 accumulator spring

(54).

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3