Pontiac firebird 1968 - Page 414

FOUR SPEED SAGINAW MANUAL TRANSMISSION
7C-5
Fig. 7C-5 Removing Front Bearing
Fig. 7C-6 Removing Mainshaft
9. Using snap ring pliers, expand snap ring at
rear of extension housing which retains extension
housing to mainshaft (Fig. 7C-7) and remove ex-
tension housing.
10. Using countershaft alignment tool J 22246, tap
out counter gear shaft and its woodruff key through
rear of case (Fig. 7C-8) and remove countergear and
2 tanged thrust washers.
At this point, tool J 22246 may be left in to hold
the roller bearings in place or be taken out in which
case 27 roller bearings and a spacer must be re-
moved from each end of the shaft.
11. Remove reverse idler gear stop ring. Use a
long drift or punch through the front bearing case
bore and drive the reverse idler shaft and woodruff
key through rear of the case (Fig. 7C-9).
12. Remove 3rd and 4th synchronizer snap ring
(Fig. 7C-4).
13. Support third speed gear with press plates
and press on front of mainshaft to remove synchro-
nizer assembly, third gear blocker ring and third
speed gear from mainshaft (Fig. 7C-10).
Fig. 7C-7 Expanding Extension Housing Snap Ring
COUNTERSHAFT
J 22246
Fig. 7C-8 Removing or Installing Countershaft
Fig. 7C-9 Removing Reverse Idler Gear Shaft
14. Remove rear bearing snap ring from main-
shaft (Fig. 7C-4).
15. Support first gear with press plates and press
on rear of main shaft to remove first gear, thrust
washer, spring washer, rear bearing and snap ring
(Fig. 7C-11).
16. Remove speedometer gear by depressing re-
tainer clip and sliding gear off output shaft.