Front servo piston. Rear servo piston

Front servo piston

DISASSEMBLY

(1) Remove seal ring from rod guide (Fig. 194).

(2) Remove small snap ring from servo piston rod.

Then remove piston rod, spring and washer from piston.

(3) Remove and discard servo component O-ring and seal rings.

ASSEMBLY

Clean and inspect front servo components.

(1) Lubricate new O-ring and seal rings with petroleum jelly and install them on piston, guide and rod.

(2) Install rod in piston. Install spring and washer on rod. Compress spring and install snap ring (Fig.

194).

(3) Set servo components aside for installation during transmission reassembly.

Rear servo piston

DISASSEMBLY

(1) Remove small snap ring and remove plug and spring from servo piston (Fig. 195).

(2) Remove and discard servo piston seal ring.

ASSEMBLY

(1) Lubricate piston and guide seals with petroleum jelly. Lubricate other servo parts with Mopart ATF Plus 3, Type 7176, transmission fluid.

(2) Install new seal ring on servo piston.

(3) Assemble piston, plug, spring and new snap ring.

(4) Lubricate piston seal lip with petroleum jelly.

Fig. 194 Front Servo

1 - PISTON RINGS

2 - SERVO PISTON

3 - O-RING

4 - SNAP RING

5 - PISTON ROD GUIDE

6 - SEAL RING

7 - SNAP RING

8 - SERVO SPRING

9 - WASHER

10 - SPRING

11 - PISTON ROD

Fig. 195 Rear Servo Components

1 - SNAP RING

2 - PISTON SEAL

3 - PISTON PLUG

4 - SPRING RETAINER

5 - SNAP RING

6 - PISTON SPRING

7 - CUSHION SPRING

8 - PISTON