Pontiac FIREBIRD 1972 Service Manual page 938

TURBO HYDRA-MATIC (M-40) TRANSMISSION 7E-49
Fig. 7E-70 Removing Front Band
i. Remove parking pawl shaft and parking pawl
(Fig. 7E-69).
9. Remove front band (Fig. 7E-70).
10. Remove sun gear shaft (Fig. '7E-71).
11. Check end play as follows:
a. Install J 21904 into an extension housing attach-
ing bolt hole.
b. Mount Dial Indicator J 8001 on rod and index
with end of output shaft (Fig. 7E-72).
c. Move output shaft in and out to read end play.
End play should be from .007" to .019". Selective
washer controlling this end play is a steel washer
having 3 lugs. It is located between a thrust
washer and the rear face of transmission case.
Fig. 7E-7 1 Removing Sun Gear Shaft
DIAL INDICATOR
1
Fig. 7E-72 Checking Rear End Play
d. If a different washer thickness is required to bring
end play within specification, it can be selected
from the followine chart:
THICKNESS NOTCHES AND/OR
I N INCHES NUMERAL
.074-.078 None 1
.082-.086 1 Tab Side 2
.090-.094 2 Tab Side 3
.098-. 102 1 Tab O.D. 4
106-. 110 2 Tabs O.D. 5
114-. 118 3 Tabs O.D. 6
12. Remove center support-to-case bolt, using a 3/8" 12
point thin wall deep socket (Fig. 7E-73).
13. Remove intermediate clutch backing plate-to-case
snap ring.
14. Remove intermediate clutch backing plate, three (3)
composition and three (3) steel clutch plates (Fig.
7E-74).
15. Remove center support-to-case retaining snap ring
(Fig. 7E-75).
16. Remove entire gear unit assembly by lifting with
Gear Assembly Installing and Removing Tool J
21765 with J 6125- 1 Slide Hammer (Fig. 7E-76).
17. Remove output shaft-to-case thrust washer from rear
of output shaft or from inside of case.
18. Place gear unit assembly, with output shaft facing
down, in hole in work bench or in Holding Fixtures
J 6116 and J 21364.