Overdrive Servo

Overdrive Servo





Removal

1. Remove the main control valve body. For additional information, refer to Main Control Valve Body Automatic Transaxle/Transmission - 4R70E/4R75E.

2. NOTE: If the Servo Piston Remover/Installer is not available, extreme care must be taken. Spring pressure will force Overdrive (O/D) servo piston assembly out of case. Case bore damage may result from trying to pry on O/D (Overdrive) servo internal retaining ring.

Using the Servo Piston Remover/Installer, compress the servo spring to remove the O/D (Overdrive) servo retaining ring.






3. Remove the O/D (Overdrive) servo piston and return spring.





Installation

1. Install the O/D (Overdrive) servo piston assembly.
1. Install the O/D (Overdrive) servo piston return spring.

2. Install the O/D (Overdrive) servo piston assembly.






2. Use the Servo Piston Remover/Installer to install the O/D (Overdrive) servo piston retaining ring.





3. Install the main control valve body. For additional information, refer to Main Control Valve Body Automatic Transaxle/Transmission - 4R70E/4R75E.