Pontiac FIREBIRD 1972 Service Manual page 950

TURBO HYDRA-MATIC (M-40) TRANSMISSION
7E-6 1
S Q U A R E D O F F PRESSURE
R E G B O S S
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Fig. 7 E - 1 0 8 Pump Cover with Squared-Off Boss
with the oil holes and onfice cup plug will be
used to service either type pump cover.
1. Inspect drive gear, driven gear, gear pocket and cres-
cent for scoring, galling or other damage.
2. Place pump gears in pump and check pump body
face-to-gear face clearance, should be .0008"-.0035"
(Fig. 7E-109).
3. Check face of pump body for scores or nicks.
4. Check oil passages in pump body (Fig. 7E-110).
5. Check for damaged cover bolt attaching threads.
6. Check for overall flatness of pump body face.
7. Check bushing for scores or nicks. If replacement is
necessary, proceed as follows:
a. Using Tool J 21465-17 with Driver Handle J
8092, remove bushing.
c
Fig. 7 E - 1 0 9 Checking Body Face-To-Gear Face Clearance
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V E N T
C O O L E R
R E T U R N
T O
-COOLER
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MODULATOR OR
I N T E R M E D I A T E
Fig. 7E-1 1 0 Pump Body Oil Passages
b. From gear pocket side of pump and using J
21465-17 with Driver Handle J 8092, install new
bushing flush to .010" below gear pocket face.
8. Inspect pump attaching bolt seals for damage, re-
place if necessary.
9. Inspect pump cover face for overall flatness.
10. Check for scores or chips in pressure regulator bore.
1 1 . Check that all passages are open and not inter-con-
netted in pumd cove; (Fig. YE-111).
Check for scoring and damage at pump gear face.
M O D U L A T O R O R
REVERSE
p =
.
LINE
4
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PRESSURE REGULATOR
FEED H O L E
/ - q - / -
'INE V E N T
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Fig. 7E-1 1 1 Pump Cover Oil Passages