Pontiac FIREBIRD 1972 Service Manual page 1093

TURBO HYDRA-MATIC (M-38) TRANSMISSION 76-55
c
PUMP-TO-
C O N V E R T E R
i
/HUB LIP S E A L
-WOOD
B L O C K S
Fig. 7G-91 Installing Pump Body Oil Seal
NOTE: Outer diameter o f seal should be coated
with a non-hardening,sealer prior to installa-
tion.
If cooler by-pass valve was removed, install new
cooler by-pass spring, check valve and valve seat by
tapping seat into place with a soft hammer or brass
drift so it is flush to .01OV below face of pump body
(Fig. 76-92).
If a new oil pump body is installed, it is essential that
a priming valve and spring (Fig. 76-84) be installed
in this new pump body.
CAUTION: The production oil pump body does
not include, nor use, this primary valve and
spring. However,
if a
service pump body were
installed without this priming valve and spring,
serious transmission malfunction would occur.
4. Install drive and driven gears into pump body with
alignment marks up (Fig. 76-86).
NOTE: Tang face o f drive gear is up to prevent
damage by converter.
5. Install pump cover to pump body, aligning marks
made earlier.
6. Install pump cover-to-direct clutch drum selective
thrust washer over pump cover oil delivery sleeve
(hub). This washer has one (1) external tang.
7. Install and engage three (3) direct clutch-to-pump
hub hook-type oil seal rings on pump cover oil deliv-
ery sleeve (Fig. 76-80) If the teflon forward clutch
rings were removed, install two (2) hook-type metal
oil seal rings and make certain that rings are free to
move in grooves.
8. Install intermediate clutch piston inner and outer
seals on clutch piston and install intermediate clutch
piston assembly into pump cover (Fig. 76-93).
NOTE: Lips ofseals should be facing into pump
cover when piston is installed. For aiding in-
stallation ofpiston into pump cover, use a piece
o f ,020" music wire crimped into short section
o f copper tubing.
9. Install twenty (20) clutch return springs into piston
and install spring seat retainer and five (5) attaching
bolts, finger tight.
10. Place oil pump assembly upside down in transmission
case, tighten five (5) pump cover-to-pump body bolts
to 18 lb. ft. and remove pump from case.
INTERMEDIATE CLUTCH
PISTON OUTERSEAL
\(
Fig. 7G-92 Installing N e w By-Pass Valve Seat Fig. 7G-93 Installing Seals onto Clutch Piston