Chevrolet Chevelle 1977 Repair Manual page 362

(400)7A-42
LINE DRIVE
\
PUMP
INTAKE
P i INTERMEDIATE C L U T C H i i ^ ^ v E N T ^ M
CUP PLUG
m
Fig. 7A-1 36C --C ase--F ront V ie w Passage Id e n tific a tio n
INSPECTION OF CASE ASSEMBLY (FIGS. 7A-
136C AND 7A-137C)
CAUTION: I f the
replacement, make sure the center support-to-case
spacer is removed from the old case and reinstalled
in the new case.
1. Inspect case assembly for cracks, porosity or inter­
connected passages.
2. Check for good retention of band anchor pins.
3. Inspect all threaded holes for thread damage.
4. On model CL inspect studs for thread damage, and
make sure they are tight.
NOTE:
The two (2) studs at 9 o'clock and 11 o'clock
(when viewed from the rear of case and transmission in
DRIV E
EXHAUST
REVERSE
[ F J P
m odulator
ploR
INTERM EDIATE
sffu N E --------
[
modulator
iOVERNOR
SERVO
DIRECT
CLUTCH
Fig. 7A-1 37C--lnspect Transmission Case
OVERHAUL MANUAL
MODULATOR
\ OR INTERMEDIATE
TO COOLER
COOLER
RETURN
111
case assembly requires
'ETENT
INTERMEDIATE
INTERMEDIATE
]CLUTCH
:U M U LA ffc>n
(INTERMEDIATE
CLUTCH
Fig. 7 A - 1 3 8 C -A ir C h e ckin g C o n ve rte r
vehicle) are approximately 1/4" longer than the other
four (4) studs. These two longer studs are required to
accommodate the parking brake actuating cable bracket.
5. Inspect interm ediate clutch driven plate lugs for
damage or brinneling.
NOTE:
If the case assembly requires replacement,
remove the nameplate from the old case and re-install
it on the new case, using the truss head nameplate
attaching screw that is serviced with the case.
6. Inspect snap ring grooves for damage.
7. Inspect bore for governor assembly for scratches or
scoring.
8. Inspect m odulator valve bore for scoring or damage.
9. Inspect cup plug inside case for good staking and
sealing.
10. Inspect case bushing. If necessary to replace, proceed
as follows:
Case Bushing
Remove
W ith case properly supported, using tool J-2 1465-8, with
Driver Handle J-8092, remove bushing.
Replace
Using tool J-2 1465-8 adaptor ring J-2 1465-9, Driver
Handle J-8092, and extension J-2 1465-13, with lube passage
facing front of transmission case, drive replacement bushing
into case until .040 to .055 above selective washer face. Stake
bushing with tool J-2 1465-10. Stake marks to be in bushing
lubrication grooves.
INSPECTION OF CONVERTER
1. Check converter for leaks as follows (Fig. 7A-138C):
a. Install Tool J-2 1369 and tighten.
b. Apply 80 psi air pressure to tool.
c. Submerge in water and check for leaks.
2. Check converter hub surfaces for signs of scoring or
wear.