21 - 1S2
42RH TRANSMISSION OVERHAUL
B R
BE SUIE
SEAL LIP
IS TOWARD
SERVO BORE
REAR
SERVO
PISTON
J912M75
Fig. 89 Rear Servo Piston Seai Installation
VALVE BODY SERVICE AND ADJUSTMENT
VALVE BODY MAIN
COMPONENT
DISASSEMBLY
CAUTION: Do not clamp any valve body component
in a vise. This practice can damage the component
resulting in unsatisfactory operation after assembly
and installation. Remove valves, plugs and springs
with a pencil magnet. Do not use pliers to remove
any of the valves, plugs or springs and do not force
any of the components out or into place. The valves
and valve body housings will be damaged if force is
used. Tag or mark the valve body springs for refer
ence as they are removed. Do not allow them to be
come intermixed.
(1) Remove boost valve cover (Fig. 90).
(2) Remove boost valve retainer, valve
boost valve and plug (Fig. 91).
spring,
BOOST
VALVE
TUBE
BOOST
VALVE
HOUSING
AND COVER
J9321-467
COVER
SCREWS
SPRING
AND
VALVE
RETAINER
BOOST
VALVE
COVER
BOOST
VALVE
SPRING
BOOST
VALVE
BOOST
VALVE
PLUG
J9321-468
Fig. 91 Boost Valve Components
SPECIAL
TOOL 6583
DETENT BALL AND SPRING HOUSING
J932M21
Fig. 92 Securing Detent Ball And Spring With
Retainer Tool
THROTTLE
LEVER
MANUAL
LEVER
E-CLIP
Fig. 90 Boost Valve Cover Location
(3) Secure detent ball and spring with Retainer
Tool 6583 (Fig. 92).
(4) Remove E-clip that secures throttle lever in
manual lever (Fig. 93).
(5) Lift and rotate manual lever far enough to
clear detent housing.
J932M38
Fig. 93 Throttle Lever E-Clip Removal