Pontiac FIREBIRD 1972 Service Manual page 886

FOUR-SPEED MUNCIE TRANSMISSION 7D-17
9. Install the rear bearing retainer (Fig. 7D-30). Spread
the locating ring in the retainer to allow the ring to
drop around the rear bearing. Press on the end of the
mainshaft until locating ring engages groove in the
ring bearing.
10. Install the reverse gear (shift collar to rear) and two
(2) anti-rattle springs (except close ratio).
11. Press or drive the speedometer drive gear onto the
mainshaft until its rear face is 6.147 inches from the
rear end of the mainshaft.
C AUTI 0 N: Make certain correct speedometer
drive gear is installed.
12. Install seam-type spacer in countershaft gear and in-
sert Tool J 22379 into countershaft gear.
13. Using heavy grease to retain the bearing rollers, in-
stall a .050" bearing washer and 28 bearing rollers in
either end of the countershaft gear, a .050" bearing
washer,
28 more bearing rollers and another .05OW
bearing washer (Fig. 7D-31).
14. Follow the same procedure for the opposite end of
the countershaft gear.
15. Rest the transmission case on its side, with the case
cover opening toward the assembler. Put counter-
shaft gear tanged thrust washers in place, retaining
them with heavy grease and making sure the tangs
are resting in the notches of the case.
Fig. 7D-30 Installing Rear Bearing Retainer
Fig. 7D-31 Loading Bearing Rollers into Countershaft Gear
16. Set countershaft gear in place in bottom of transmis-
sion case, making sure that tanged thrust washers are
not knocked out of place and position the transmis-
sion case so that it is resting on its front face.
17. Lubricate and insert countershaft in rear of case.
Turn countershaft so flat on end of shaft is horizontal
and facing bottom of case.
NOTE: The flat on shaft must be horizontal and
toward the bottom to mate with rear bearing
retainer when installed.
18. Align countershaft gear with the shaft in rear and the
hole in front of case and press countershaft into case
(pushing Tool J 22379 out front of case) until flat on
shaft is flush with rear of case. Be sure thrust washers
remain in place (Fig. 7D-32).
BOTTOM
I)
O F CASE
Fig. 7D-32 Installing Countershaft