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AUTOMATIC TRANSMISSION
21 - 83
2-3 SHIFT VALVE
REGULATOR VALVE
THROTTLE PRESSURE
PLUG
1-2 SHIFT
CONTROL
VALVE
REGULATOR VALVE
THROTTLE PRESSURE
PLUG SPRING
/
S L E E V E ^
END PLATE
END PLATE
3-2 DOWNSHIFT
AND LIMIT
VALVE ASSEMBLY
(USED ON SOME
V-8 MODELS)
RY151A
Fig. 20 Shift And Pressure Regulator Valves/Plugs
sharpness of these edges i s v i t a l l y i m p o r t a n t . These
edges prevent foreign m a t t e r from lodging between
the valves and plugs a n d t h e bore.
Inspect a l l the valve a n d p l u g bores i n the valve
body. Use a p e n l i g h t to v i e w t h e bore i n t e r i o r s . Re-
place t h e valve body i f a n y bores are distorted or
scored. Inspect a l l o f t h e valve body springs. The
springs m u s t be free of distortion, warpage or broken
coils.
T r i a l f i t each valve a n d p l u g i n its bore t o check
freedom of operation. W h e n clean and dry, t h e valves
and plugs should slide freely i n t h e bores. V a l v e body
bores do not change dimensionally w i t h use. I f the
valve body functioned correctly when new, i t w i l l
continue t o operate properly after repair. I t should
not be necessary t o replace a valve body assembly
unless i t is damaged i n h a n d l i n g .
VALVE BODY ASSEMBLY
CAUTION: Do not force any valves or plugs into
place during reassembly. If the valves, plugs and
bores are free of distortion or burrs, they should
slide into place easily. In addition, do not over-
tighten the valve body screws during reassembly.
Overtightening will distort the valve body resulting
in valve sticking, cross leakage and unsatisfactory
operation.
Tighten
the
screws
alternately
and
evenly to 4 N«m (35 in-lbs) torque.
SHIFT
VALVE/PRESSURE
REGULATOR
PLUG
INSTALLATION
(FIG. 20)
(1) I n s t a l l 1-2 and 2-3 shift valves and t h r o t t l e and
pressure r e g u l a t i n g plugs and springs.
(2) O n models so equipped, i n s t a l l l i m i t valve and
s p r i n g a n d t h r o t t l e p l u g i n l i m i t valve housing. T h e n
secure l i m i t valve a n d spring w i t h retainer.
(3) I n s t a l l pressure plugs, sleeve and spring.
(4) I n s t a l l s m a l l end plate.
(5) I n s t a l l l i m i t valve housing and end plate.
SHUTTLE
VALVE/GOVERNOR
PLUG
INSTALLATION
(FIG. 19)
(1) I n s t a l l 1-2 a n d 2-3 shift valve governor plugs i n
t h e i r respective bores.
(2) I n s t a l l s h u t t l e valve and hold i t i n place w i t h
index
finger
w h i l e
i n s t a l l i n g
secondary
spring,
guides a n d E-clip.
(3) I n s t a l l p r i m a r y shuttle valve spring a n d t h r o t -
t l e p l u g .
(4) I n s t a l l governor p l u g end plate and shuttle
valve cover plate. T i g h t e n plate r e t a i n i n g screws to 4
N - m 35 in-lbs (4 N n n ) torque.
MANUAL
VALVE/THROTTLE
LEVER
INSTALLATION
(1) I n s t a l l t h r o t t l e valve and spring, k i c k d o w n
valve a n d valve detent i n valve body (Fig. 15).
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