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7A4-44
1977 PONTIAC SERVICE MANUAL
M O D U ~ O R
OR
INTERMEMATE
2657
Fig.
7A4-83
Pump Body-oil Passages
b. From gear pocket side of pump and, using Installer
J 21465-17 with Handle J 8092, install new bushing flush to
.010" below gear pocket face.
8. Inspect pump attaching bolt seals for damage, replace
if necessary.
9. Inspect pump cover face for overall flatness.
10. Check for scores or chips in pressure regulator bore.
11. Check that all passages are open and not inter-
connected in pump cover (Fig. 7A4-84).
EXHAI
LINE
INTAKE
MODULATOR OR
'HER
PRESSURE REGULATOR
FEED
HOLE
1 -
VENT
14. Inspect oil ring grooves for damage or wear.
15. Inspect selective washer thrust face for wear or
damage.
16. Inspect pressure regulator valve and boost valve for
free operation.
17. Inspect pump cover for open l/8" diameter breather
hole (Fig. 7A4-84).
Assemble Oil Pump
1. Install drive and driven pump gears into pump body
with alignment marks up (Fig. 7A4-79).
NOTE: Some pump driven gears have a rectangular or
triangular identification mark on one tooth. If the gear
does, it must be installed with the identification mark
down. Install pump drive gear with drive tangs up.
2. Protect stator shaft and install pump in vise.
3. Install spacer(s) if used, retainer and spring into
pressure regulator bore.
4. Install pressure regulator valve from opposite end of
bore, stem end first.
5. Install boost valve into bushing, stem end out, and
install both parts into pump cover by compressing bushing
against spring.
6. Install retaining snap ring.
7. Install pressure regulator valve bore plug and
retaining pin into opposite end of bore.
8. Install previously selected front unit selective thrust
washer over pump cover delivery sleeve.
9. Install oil seal rings on pump cover sleeve if removed
(Fig. 7A4-78).
NOTE: When installing teflon oil seal rings, make sure
slit ends are assembled in same relation as cut (Fig. 7A4-
86). Also, make sure oil seal rings are seated in ring
grooves to prevent damage to rings during re-assembly
of mating parts over rings. Retain with petrolatum.
10. Assembly pump cover to pump body with attaching
bolts.
NOTE: Leave bolts one turn loose at this time.
1 1. Place Strap J 2 1368 over pump body and cover and
tighten tool (Fig. 7A4-87).
12. Tighten pump cover bolts (18 lb. ft. torque).
13. Install and align pump-to-case gasket.
14. Install pump-to-case O-ring seal.
FORWARD CLUTCH
Fig.
7A4-84
Pump Cover-Oil Passages
12. Check for scoring and damage at pump gear face.
13. Inspect stator shaft for damaged splines or scored
bushings. If replacement of bushings is necessary, proceed as
follows:
a. Thread Remover J 2 1465-1 5 into stator shaft bushing.
Thread Hammer
J
2619 into remover. Clamp Slide Hammer
handle into vise. Grasp stator shaft and remove.
b. Using Installer J 2 1465-3 (front) or J 2 1465-2 (rear)
with Handle J 8092, press or drive bushing until tool bottoms.
Disassemble
1. Place forward clutch and turbine shaft in hole in
bench or Fixture
J
61 16 and remove forward clutch housing-
to-direct clutch hub snap ring (Fig. 7A4-89).
2. Remove direct clutch hub.
3. Remove forward clutch hub and thrust washers (Fig.
7A4-90).
4. (Models PC, PD and OC)
-
Remove five (5)
composition-faced, four (4) thin (.0775") flat steel and one
(1) waved steel clutch plates from the forward clutch housing.
(Models PA, PB and OB)
-
Remove four (4)
composition-faced, three (3) thin (.0775") flat steel and one
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