Hummer H3. Manual — part 858

2-4 SERVO DISASSEMBLE

Tools Required

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

Disassembly Procedure

Fig. 461: 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). See Special Tools.

2007 Hummer H3

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

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

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.

Check Procedure

Fig. 462: Locating Servo Cover Retaining Ring
Courtesy of GENERAL MOTORS CORP.

1. Install the band apply pin (13) and the J 33037 . See Special Tools.

2. Install the servo cover retaining ring (29) to secure the tool.

2007 Hummer H3

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

Fig. 463: 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

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

2007 Hummer H3

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

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

Installation Procedure

Fig. 464: View Of 4th Apply Piston, 2-4 Servo Cover, 2nd Apply Piston, & Servo
Piston Inner Housing
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:

Cracks

2007 Hummer H3

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