Overdrive Servo

Overdrive Servo

Special Tool(s):

Removal

1. WARNING: If equipped with fire suppression system, depower the system. For important safety warnings and procedures, refer to Fire Suppression System.

Remove the main control valve body.

2. NOTE: If the tool is not available, extreme care must be taken. Spring pressure will force overdrive servo piston assembly out of case. Case bore damage may result from trying to pry on overdrive servo internal retaining ring.

Using the special tool, compress the servo spring to remove the overdrive servo retaining ring.





3. Remove the overdrive servo piston and return spring.





Installation
1. Install the overdrive servo piston assembly.
1 Install the overdrive servo piston return spring.
2 Install the overdrive servo piston assembly.





2. Use the special tool to install the overdrive servo piston retaining ring.





3. Install the main control valve body.

4. WARNING: If equipped with fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System.

If equipped with fire suppression system, repower the system.