Hummer H2. Manual — part 2583

2-4 SERVO DISASSEMBLE

Tools Required

J 22269-01 Accumulator and Servo Piston Remover. See Special Tools and Equipment .

Disassembly Procedure

Fig. 300: Locating Servo Cushion Outer & Inner Spring With Retainer
Courtesy of GENERAL MOTORS CORP.

1. Use a J 22269-01 to compress the second apply piston assembly (17).

2. Remove the second apply piston retaining ring (14).

2004 Hummer H2

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

3. Remove the servo cushion spring retainer (15), the servo cushion outer spring (16) and the servo cushion

inner spring (105) (model dependent).

2-4 SERVO PIN LENGTH CHECK

Tools Required

J 33037 2-4 Intermediate Band Apply Pin Gage. See Special Tools and Equipment .

Checking Procedure

Fig. 301: Locating Servo Cover Retaining Ring
Courtesy of GENERAL MOTORS CORP.

1. Install the band apply pin and the J 33037 .

2. Install the servo cover retaining ring to secure the tool.

2004 Hummer H2

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

Fig. 302: Identifying Gage Slot
Courtesy of GENERAL MOTORS CORP.

3. Apply 11 N.m (98 lb in) torque. If the white line appears in the gage slot (1), the pin length is correct.

4. If a new pin is needed, refer to 2-4 Servo Pin Selection in order to determine the correct pin length.

2-4 SERVO ASSEMBLY INSTALLATION

Tools Required

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J 22269-01 Accumulator and Servo Piston Remover. See Special Tools and Equipment .

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

2004 Hummer H2

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

Fig. 303: 2-4 Servo Assembly Components
Courtesy of GENERAL MOTORS CORP.

1. Inspect the 4th apply piston (25), the 2-4 servo cover (28), the 2nd apply piston (17), and the servo piston

inner housing (20) for the following conditions:

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Cracks

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Scoring

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Burrs and nicks

2. Install the following seals:

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The 4th apply piston outer oil seal ring (26) on the 4th apply piston (25).

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The 2-4 servo cover O-ring seal (27) on the 2-4 servo cover (28).

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The 2nd apply piston outer (18) and inner (19) oil seal rings on the 2nd apply piston (17).

2004 Hummer H2

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