2-4 Servo
2-4 SERVO DISASSEMBLEREMOVAL PROCEDURE
- Tools Required
- J22269-01 Piston Compressor
1. Use a J22269-01 to compress the second apply piston assembly (17).
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
- J33037 2-4 Band Apply Pin Tool
1. Install the band apply pin and the J133037.
2. Install the servo cover retaining ring to secure the tool.
3. Apply 11 Nm (98 inch lbs.) 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
- J22269-01 Piston Remover
- J29714-A Servo Cover Compressor
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
- Scoring
- Burrs and nicks
2. Install the following seals:
- The 4th apply piston outer oil seal ring (26) on the 4th apply piston (25).
- The 2-4 servo cover O-ring seal (27) on the 2-4 servo cover (28).
- The 2nd apply piston outer (18) and inner (19) oil seal rings on the 2nd apply piston (17).
- The O-ring seal (21) on the servo piston inner housing (20).
3. Install the servo cushion outer spring (16), the servo cushion inner spring (105) (model dependent) and the cushion spring retainer (15) in the 2nd apply piston (17).
4. Use the J22269-01 and compress the second apply piston assembly (17).
5. Install the second apply piston retaining ring (14).
6. Assemble the 2-4 servo components in the order shown: (12-15, 17, 20, 22-25, 28, 29).
7. Install the 2-4 servo assembly into the 2-4 servo bore.
8. Install the J29714-A.
9. Tighten the bolt on the J29714-A in order to compress the servo cover.
10. Install the servo cover retaining ring.