Pontiac FIREBIRD 1972 Service Manual page 948

TURBO HYDRA-MATIC (M-40) TRANSMISSION 7E-59
1. Inspect all valves for scoring, cracking and free move-
ment in their respective bore.
2. Inspect bushing for cracks, scratches or distortion.
3. Inspect body for cracks or scored bores.
4. Check all springs for distortion or collapsed coils.
5. Inspect front accumulator piston and oil seal ring for
damage.
ASSEMBLE
1. Install front accumulator spring and piston into valve
body.
2. Install special tool J 21885, compress spring and pis-
ton and secure with retaining E-ring (Fig. 7E-99).
3. Install 1-2 accumulator primary spring in lower left
bore (not used in P G or PR models).
4. Install 1-2 accumulator primary valve, using a retain-
ing pin as a temporary retainerto hold the siring and
its valve in their operating position (not used in PG
or PR models).
5. Install the 1-2 accumulator bushing and 1-2 ac-
cumulator valve, stem end out, into the bore (bushing
not used in P G or PR models).
6. Install 1-2 accumulator secondary spring and bore
plug. Compress plug and install grooved retaining
pin from cast surface side of the valve body, with the
grooves entering the pin hole last. Tap pin with ham-
mer until flush with cast surface. Remove temporary
retainer.
7. In next bore up, install detent spring and spacer.
Compress spring and secure with small screwdriver
(Fig. 7E-102).
TOR DETENT
VALVE
8. Install detent regulator valve, wide land first.
9. Install detent valve, narrow land first.
10. Install bore plug (hole out), depress spring by press-
ing in on plug and install roll pin. Remove screw-
driver.
11. In lower right hand bore, install 3-2 valve.
12. Install 3-2 valve spring, spacer, bore plug (hole out)
and roll pin.
13. In next bore up, install 2-3 shift valve, open end out
and install 2-3 secondary spring into its open end.
14. Install 2-3 modulator valve into its bushing and in-
stall both parts into valve body bore.
15. Install 2-3 primary spring and roll pin.
16. In next bore up, install 1-2 valve, stem end out.
17. Install the 1-2 regulator valve, larger stem first,
spring and the 1-2 detent valve, hole end first, into the
1-2 modulator bushing, aligning the spring into the
bore of the detent valve and install this assembly into
the valve body bore.
18. Compress bushing against spring and install roll pin.
19. Install manual valve with detent pin groove to the
right.
OIL PUMP
DISASSEMBLE
1. Place oil pump assembly in hole in bench or Holding
Fixture
.T
61 16 and J 21364 Adapter.
REGULATOR BOOST VALVE
SNAP RING
BUSHING AND VALVE
J 5403
1
/
REGULATOR SPRING
Fig. 7 E - 1 0 2 Installing Detent Regulator Valve and Detent
Valve
Fig. 7 E - 1 0 3 Removing Snap Ring From Boost Valve
Bushing