Front Servo

Front Servo

Special Tools:

Special Tool(s)

Removal

1. NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms can occur while the vehicle relearns its adaptive strategy. The customer needs to be notified that they may experience slightly different upshifts either soft or firm and this is a temporary condition and will eventually return to normal operating condition.

Disconnect the battery ground cable.
2. Raise and support vehicle.





3. Remove the shift cable.
1. Disconnect the shift cable from the manual control ]ever.
2. Remove the shift cable from the bracket.
4. Remove the digital Transmission Range (TR) sensor.
5. Remove the main control valve body.
6. Remove the Three Way Catalytic Converter (TWC).

7. NOTE: If equipped, the transmission servo heat shield needs to be unclipped from the fluid pan rail and positioned out of the way for fluid pan removal.





Loosen the nut and position the heat shield out of the way.





8. Remove the front band locknut and unscrew the front band adjusting screw.
^ Discard the front band locknut after removal.

9. CAUTION: The servo cover is under spring pressure.





Using the special tool, remove the front band servo cover retaining ring.
^ Slowly remove tension on the J-hook nut and remove the servo cover compressor.

10. CAUTION: The special tool should be used to prevent damage to servo and bore.





Using the special tool, remove the front band servo cover, servo piston and servo piston spring.
^ Insert the special tool into the transmission case, locate on servo rod, and remove the front band servo cover, servo piston and servo piston spring.

Installation





1. Assemble the front band servo cover, front band servo piston and the servo piston spring.
1. Install the front band servo piston into the front band servo cover.
2. Install the servo piston spring on the front band servo piston.

2. CAUTION: Do not damage O-ring during installation. Do not press servo cover and O-ring past relief hole in case, or O-ring damage may occur.





Install the front band servo assembly into the transmission case.
^ Lubricate the front band servo cover O-ring with petroleum jelly.





3. Using the special tool, install the front band servo cover retaining ring.
4. Install the main control valve body.
5. Adjust the front band.





6. If equipped, position the transmission servo heat shield on the transmission and install the nut.
7. Install the three way catalytic converter.





8. Install the shift cable.
1. Install the shift cable.
2. Install the shift cable to the manual control lever.
9. Install the digital Transmission Range (TR) sensor.
10. Lower the vehicle.

11. NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms can occur while the vehicle relearns its adaptive strategy. The customer needs to be notified that they may experience slightly different upshifts either soft or firm and this is a temporary condition and will eventually return to normal operating condition.

Connect the battery ground cable.
12. Fill the transmission to the correct fluid level and check for correct transmission operation.
^ Use MERCON(R) V Automatic Transmission Fluid XT-5-QM or equivalent meeting MERCON(R) V specification.