Kickdown Servo and Band

KICKDOWN SERVO AND BAND

Disassembly

Disassemble controlled load servo piston by removing small snap ring from servo piston. Then remove washer, spring and piston rod assembly from servo piston.

Inspection

Inspect piston and guide seal rings for wear, and make sure they turn freely in the grooves. It is not necessary to remove seal rings unless conditions warrant. Inspect piston for cracks, burrs, scores and wear. Inspect piston bore in the case for scores or other damage. Inspect fit of guide on piston rod. Inspect piston spring for distortion.
For controlled load servo, inspect bore in piston and "0" ring on piston rod.
Inspect band lining for wear and bond of lining to the band. Inspect lining for black burn marks, glazing, nonuniform wear pattern and flaking. If lining is worn so grooves are not visible at ends or any portion of the bands, replace the band. Inspect band for distortion or cracked ends

Assembly






Assemble controlled load servo piston as follows (Fig. 43).
(1) Grease "0" ring and install on piston rod.
(2) Install piston rod into servo piston.
(3) Install spring, flat washer and snap ring to complete the assembly ends.