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7A3-30
1977 PONTIAC SERVICE MANUAL
Fig. 7A3-59 Removing Low and Reverse Clutch Piston
Seals
Fig. 7A3-6
1
Intermediate Clutch 1-2 Accumulator Piston
Fig. 7A3-60 Compressing 1-2 Accumulator Piston Cover
hub teflon oil seal rings, but do not remove them unless they
are damaged. If replacement is necessary, use two metal hook
type service replacement rings (Fig. 7A3-63).
5. Remove pump cover and stator shaft assembly from
pump body (Fig. 7A3-65).
6. Remove pump drive gear and driven gear from pump
body. Inspect pump gears and cover for wear or scoring (Fig.
7A3-66).
The pump body assembly should be replaced only if the
drive and/or driven gears are broken or galled, pump body
galled, uneven machined surfaces, pump body to case seal
ring groove damaged or the pump seal drain back hole is
un-drilled.
Assembly
Fig. 7A3-62 Removing Pump Cover Attaching Bolts
7. Filler cooler by-pass passage with grease and insert
Tool J 23071 or J 23134 and force by-pass valve seat, check
ball and spring from pump body (Fig. 7A3-67).
8. Remove pump outside diameter to case square cut
"0" ring seal and discard (Fig. 7A3-68).
9. Remove pump body to converter hub lip seal, if
necessary and discard (Fig. 7A3-69).
10. Place pump on wood blocks so surface finish is not
damaged and install pump to converter hub lip seal, using
Seal Driver J 21359. Make certain lip seal is not torn or
nicked.
Reassembly of Oil Pump Assembly
1. Install pump drive gear and driven gear. Drive gear
has off-set tangs, assemble with tang face up to prevent
damage to converter (Fig. 7A3-66).
2. Install cooler by-pass spring, check ball and seat.
Using Tool J 231 12, press seat into bore until top of seat is
flush with face of pump body (Fig. 7A3-70).
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