Chevrolet Chevelle 1977 Repair Manual page 340

(400)7A-20
a. (Models CG, CJ and CP) Remove retaining pin, 1-2
m odulator bushing, 1-2 valve spring, 1-2 m odulator valve,
and 1-2 shift valve.
b. (All other models) Remove retaining pin,
modulator bushing, 1-2 regulator valve, 1-2 regulator spring,
1-2 detent valve and 1-2 shift valve.
6. From next bore down, remove retaining pin, 2-3 shift
valve spring, 2-3 m odulator valve bushing, 2-3 m odulator
valve, 3-2 intermediate spring, and 2-3 shift valve.
7. From next bore down remove retaining pin, bore plug,
spring, spacer, and 3-2 valve.
8. At other end of assembly, top bore, remove retaining
pin and bore plug, detent valve, detent regulator valve, spring
and spacer.
9. From the next
accum ulator valve train as follows:
a. (Model CP) Remove the grooved retaining pin, bore
•^| S i r w m m m r s
2
^ --------------------------------------------------------------
\ MODELS CB, CG, CJ, CL & CS I
1
\
\ rn
14 15 2 9
MODELS CF, CG*, CM & CT
Manual Valve
Retaining Pin
Bore Plug
Detent Valve
Detent Regulator
Valve
Spacer
Detent Regulator
Valve Spring
1-2 Shift Valve
* L AT ER DESIGN
OVERHAUL MANUAL
bore down, remove the
17
16
|
9. 1-2 Detent Valve
9a.
1-2 Modulator Valve
10 . 1-2 Regulator Valve
Spring
a.
1-2 Mod. Valve Spring
1 0
11 . 1-2 Regulator Valve
12.
1-2 Modulator
Bushing
13. Retaining Pin
14. Retaining Pin
Fig. 7A-67C--Control Valve Assembly-Exploded View
plug, 1-2 accum ulator valve and spring.
b. (Models CB, CG, CJ, CL and CS) Remove the
grooved retaining pin, bore plug, 1-2 accum ulator valve.
1-2
c. (Models CF, CM and CT) Remove the grooved
retaining pin, bore plug, 1-2 accum ulator secondary spring
and 1-2 accum ulator valve.
Inspection
NOTE:
See Fig. 7A-66C. Do not remove the teflon oil
seal ring from the front accum ulator piston unless the
oil seal ring requires replacement. For service, the oil
seal ring is cast iron.
1. Inspect all valves for scoring, cracks and free
movement in their respective bores.
1-2 2. Inspect bushings for cracks, scratches or distortion.
3. Inspect body for cracks, or scored bores.
4. Check all springs for distortion or collapsed coils.
8
&
18
24
15. Bore Plug
16.
1-2 Accumulator
Valve
17.
1-2 Primary
Accumulator Spring
18.
2 -3 Shift Valve
19.
3 -2 Intermediate
Spring
.
2-3 Modulator Valve
2 0
.
2 -3 Shift Valve
2 1
Spring
r~'
9a 10a
M O DEL CG, CJ & CP
y
| 9 10 11 I 12
f m m m m m m m m
- iM w r w -
G 5 IIUUUIJ «8f*W8M I . L U
19 2 0 21 25
*= mwrnrn a I
25 26 2 7 2 8
. 2 -3 Modulator
2 2
Bushing
23.
Retaining Pin
24.
3 -2 Valve
25. Spacer
26.
3 -2 Valve Spring
27.
Bore Plug
28.
Retaining Pin
29. 1-2 Accumulator
Valve Sec. Spring
' " 1
13
f
*
26