Rear Servo; Park/Neutral Position Switch; Description; Operation - Jeep Wrangler 2001 Service Manual

21s - 116 AUTOMATIC - 32RH
PARK/NEUTRAL POSITION
SWITCH

DESCRIPTION

The park/neutral position switch (Fig. 76) is
threaded into the side of the transmission case, just
above the transmission oil pan mounting surface.
The center terminal of the park/neutral position
switch is the starter-circuit terminal. It provides the
ground for the starter solenoid circuit through the
selector lever in PARK and NEUTRAL positions only.
The outer terminals on the switch are for the backup
lamp circuit.
Fig. 76 Park/Neutral Position Switch
1 - NEUTRAL CONTACT
2 - MANUAL LEVER AND SWITCH PLUNGER IN REVERSE
POSITION
3 - PARK CONTACT
4 - SWITCH

OPERATION

The park/netral position switch is operated by the
manual lever of the valve body. When the valve body
is in the PARK or NEUTRAL positions, the center
terminal of the park/neutral position switch is
grounded to the transmission case through the man-
ual lever.
When the valve body is in the REVERSE position,
the manual lever depresses the park/neutral position
switch and connects the outer two terminals of the
switch to provide continuity for the back-up lamp cir-
cuit.
2001 JEEP WRANGLER

REAR SERVO

DISASSEMBLY

(1) Remove small snap-ring and remove plug and
spring from servo piston (Fig. 77).
(2) Remove and discard servo piston seal ring.
1 - SNAP-RING
2 - PISTON SEAL
3 - PISTON PLUG
4 - SPRING RETAINER
5 - SNAP-RING
6 - PISTON SPRING
7 - CUSHION SPRING
8 - PISTON

ASSEMBLY

(1) Lubricate piston and guide seals (Fig. 78) with
petroleum jelly. Lubricate other servo parts with
Mopar ATF +4, type 9602, 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.
1 - SNAP-RING
2 - PISTON SEAL
3 - PISTON PLUG
4 - SPRING RETAINER
5 - SNAP-RING
6 - PISTON SPRING
7 - CUSHION SPRING
8 - PISTON
Fig. 77 Rear Servo Components
Fig. 78 Rear Servo Components
TJ