Low-Intermediate Servo
- Apply air pressure to low-intermediate servo apply test port. Low-intermediate band should tighten around sun gear of rear planetary gear set. Due to cushioning effect of the servo release spring, band application may not be heard or felt. Servo should hold air pressure and a dull thud should be heard when air pressure is released.
- Apply air pressure to low-intermediate servo release test port while continuing to pressurize apply port. Servo piston should return to release position. Low-intermediate band should loosen and a dull thud should be heard. Release air pressure from apply test port. The release test port should hold air pressure. Any leakage or failure of piston movement requires servo servicing.