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7A2-28
1977 PONTIAC SERVICE MANUAL
Fig. 7A2-55 Removing Low and Reverse Clutch Piston
Outer Seal
Fig. 7A2-57 Compressing 1-2 Accumulator Piston Cover
Fig. 7A2-58 1-2 Accumulator Assembly
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Exploded View
2. Remove manual valve from lower left hand bore.
3. From lower right hand bore, remove Dressure
. d
regulator valve train retaining pin, boost valve sleeve,
intermediate boost valve, reverse and modulator boost valve,
pressure regulator valve spring and pressure regulator valve.
4. From next bore, remove 2-3 shift valve train retaining
pin, control valve sleeve, control valve spring, 2-3 shift
control valve, shift valve spring and 2-3 shift valve.
5. From next bore, remove the 1-2 shift valve train
retaining pin, control valve sleeve, control valve spring, 1-2
shift control valve and 1-2 shift valve.
6. From next bore, remove retaining pin, plug, manual
low control valve spring and manual low control valve.
7. From next bore, remove retaining pin, detent
regulator valve spring, spring seat and detent regulator valve.
8. From bore on opposite side, remove detent actuating
lever bracket bolt, bracket, stop, spring retainer, seat, outer
spring, inner spring, washer and detent valve.
Fig. 7A2-56 Removing Low and Reverse Clutch Piston
Center and Inner Seal
Inspection
VALVE BODY (FIG. 7A2-59)
Disassembly
1. Position valve body assembly with cored face up and
direct clutch accumulator piston pocket positioned.
1. Inspect all valves for scoring, cracks and free
movement in their respective bores.
2. Inspect valve body for cracks, scored bores,
interconnected oil passages and flatness of mounting face.
3. Check all springs for distortion or collapsed coils.
Reassembly
1. Install detent valve, washer, outer spring, inner spring,
spring seat, and spring retainer. Install detent valve stop and
detent valve actuating bracket. Torque retaining bolt to 52
lb. in.
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