Chevrolet 1977 Monte Carlo, Руководство по ремонту

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(400)7A -42 A U T O M A T IC T R A N S M IS S IO N S
RING SPACER CASE EXTENSION
Fig. 7A-1 33C -M od el CL Case Extension
extension housing properly supported, rem ove bushing as
follows:
a. W ith rear seal rem oved, position case extension on
bench, w ith seal end up. A ssem ble remover J -2 1465-17 on
handle J-8092, and drive out bushing with lead or brass
hammer.
b. U sin g tool J -2 1465-17, w ith D river H andle J-8092,
drive or press replacem ent bushing into place, flush to .010
below oil seal counter bore area. Stake bushing, using tool
J -2 1465-10. Stake marks to be in bushing lubrication
grooves.
2. Inspect gasket m ounting face for damage.
3. Inspect housing for cracks or porosity.
4. Be sure rear seal drain back port is not obstructed.
IN S P E C T IO N OF CASE E X T E N S IO N -
CL M O D E L (FIG. 7 A -1 3 3 C )
1. Inspect seal (case extension to case) groove for
damage.
2. Inspect for cracks, or porosity.
3. Inspect dow el pin in rear face for damage.
4. Inspect oil seal for damage. If replacem ent is
required, proceed as follows:
a. Pry oil seal from extension.
b. A pply non-hardening sealer to outside o f new oil
seal, and install oil seal into case extension using tool (J-
24057) (see Fig. 7A -171C ).
5. Inspect ball bearing assem blies. If they are damaged,
or if they require cleaning, proceed as follows:
a. R em ove rear seal.
b. R em ove snap ring.
c. R em ove ball bearings and bearing spacer, using a
brass rod on the outside race o f bearing. An arbor press can
be used if tool to press bearing out is located on outer race
o f bearing. D O N O T locate against inner race or balls.
d. Install ball bearing assem bly and spacer, bearing
first.
e. Install ball bearing assem bly and snap ring.
f. Install new rear oil seal.
I N S P E C T I O N O F M O D U L A T O R A N D V A L V E
1. Inspect m odulator assem bly for any signs o f bending
or distortion (Fig. 7A -134C ).
2. Inspect "O" ring seal seat for damage.
3. A pply suction to vacuum tube and check for
diaphragm leaks.
4. C heck m odulator bellow s as outlined in Section 7
o f Service M anual (m odulator plunger is under pressure -
16 lbs.). If bellow s is dam aged plunger will have very little
pressure.
5. Inspect m odulator valve for nicks or damage.
6. Check freeness o f valve op eratic- ase bore.
I N S P E C T I O N O F M A N U A L A N D P A R K I N G
L IN K A G E
1. Inspect parking actuator rod for cracks, or broken
spring retainer lugs (Fig. 7A -135C ).
2. Inspect actuator spring for damage.
3. Inspect actuator for free fit on actuator rod.
4. Inspect parking pawl for cracks or wear.
5. Inspect m anual shaft for dam aged threads, rough oil
surface or loose lever.
6. Inspect inside detent lever for cracks or a loose pin.
7. Inspect parking pawl shaft if rem oved for damaged
retainer groove.
8. Inspect parking pawl return spring for deform ed
coils or end.
9. Inspect parking bracket for cracks or wear.
10. Inspect detent roller and spring assembly.
I N S P E C T I O N O F C A S E A S S E M B L Y ( FI GS. 7 A-
1 3 6 C A N D 7 A - 1 3 7 C )
If the case assem bly requires replacement, m ake sure
the center support-to-case spacer is rem oved from the old
case and reinstalled in the new case.
Fig. 7A-1 34 C ~ M o d u la to r Assembly and Valve