Buick LeSabre 1965 Service Manual page 197

CLUTCH, S-M TRANSMISSION 46000 4-SPEED TRANSMISSION 4 - 6 1
Figure 4-147—Installing Case Extension
to Transmission Case
face of'the snap ring and the front
face of the spacer washer.
5. Install the main drive gear and
bearing assembly through the side
cover opening and into position
in transmission front bore. Tap
lightly into place, if necessary,
with a plastic hammer. Place
snap ring and spacer in groove
in front bearing.
6. With the transmission case
resting on its front face, move
countergear into mesh with main
drive gear. Be sure thrust wash-
ers remain in place. Install wood-
ruff key into end of countershaft
and press shaft (Figure 4-142)
until end of shaft is flush with
rear face of transmission case.
7. Attach a dial indicator as
shown in Figure 4-143, and check
the end play of the countergear.
End play must not be more than
.025".
8. Install the f o u r t e e n roller
bearings into the main drive gear,
using heavy grease to hold the
bearing in place.
9. Using heavy grease, place gas-
ket in position on front face of
rear bearing retainer.
10. Install fourth speed synchro-
nizing ring on main drive gear
with the notches toward the rear
of the transmission.
11. Position the reverse i d l e r
gear thrust washer (untanged) on
the machined face of the ear cast
for the reverse idler shaft. Po-
sition the front reverse idler gear
on top of the thrust washer with
the hub facing forward rear of the
case.
Figure 4-148—Installing Front
Companion Flange
12. Lower the mainshaft assem-
bly into the case, making certain
that the notches on the fourth
speed synchronizing ring corre-
spond to the keys in the clutch
assembly. See Figure 4-144.
13. Install the self-locking bolt
attaching rear bearing retainer
to transmission case, (see Fig-
ure 4-145). Torque to 20 to 30
ft. lbs.
14. From the rear of the case,
i n s e r t the rear reverse idler
gear, engaging the splines with
the portion of the gear, within the
case.
15. Using heavy grease, place
gasket into position on rear face
of rear bearing retainer.
16. Using heavy grease, install
the remaining thrust washer into
place on the reverse idler shaft,
making sure tang on the thrust
washer is in the notch in the idler
thrust face of the extension.
17. Place the two clutches in neu-
tral position. Pull reverse shifter
shaft to left side of extension and
rotate shaft to bring reverse shift
fork as far forward in extension
as possible. Start the extension
onto the transmission case (Fig-
ure 4-147) while slowly pushing
in on the shifter shaft to engage
the shift fork with the reverse
gear shift collar. When the fork
engages, rotate the shifter shaft
to move the reverse gear rear-
Figure 4-149—Sealing Case Extension
Attaching Bolt
ward, permitting the extension to
slide onto the transmission case.
18. Install new oil seal in rear
bearing retainer, using Seal In-
staller J-8864. See Figure 4-146.
L i g h t l y coat seal with gear
lubricant.
19. Install three extension and re-
tainer to case attaching bolts
(torque to 35 to 45 ft. lbs.) and
two extension to retainer attach-
ing bolts (torque to 20 to 30 ft.
lbs.). Use suitable sealer on the
lower right attaching bolt as
viewed from rear. See Figure
4-149.
20. Push or pull reverse shifter
shaft to line up groove in the shaft
with the holes in the boss and
drive in the lock pin. Install shift-
er lever.
21. Install the main drive gear
bearing retainer, gasket and four
attaching bolts, using a suitable
sealer on bolts. Torque to 15 to
20 ft. lbs.
22. Install a shift fork in each
clutch sleeve.
23. Install Front Companion
flange (see Figure 4-148).
24. Place both clutches in neutral,
install side cover gasket and
carefully lower side cover into
place. Install attaching bolts and
tighten evenly to avoid side cover
distortion. Use suitable sealer
when installing the lower right
bolt.
NOTE: The transmission should
"overshift" slightly in all ranges.