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FOUR-SPEED MUNCIE MANUAL TRANSMISSION
7D-9
Fig. 70-16 Pressing Mainshaft from First and
Second Speed Gears
6. Remove six bolts attaching the case extension to the
rear bearing retainer. Tap extension with soft hammer
in a rearward direction to start. When the reverse idler
shaft is out as far as it will go, move extension to left
so reverse fork clears reverse gear and remove
extension and gasket.
7. Remove the rear reverse idler gear, roll pin, shaft
and flat thrust washer from the extension.
8. Depress the speedometer gear retaining clip, slide
the gear off the output shaft and remove the reverse
gear.
9. Slide 3-4 synchronizer clutch sleeve to 4th speed
position (forward) before trying to remove mainshaft
assembly from case (Fig. 7D-11).
10. Carefully remove the rear bearing retainer and
mainshaft assembly from the case by tapping bearing
retainer with a soft hammer.
1 1. Unload 17 bearing rollers and cage from main
drive gear and remove fourth speed synchronizing
ring.
12. Lift the front reverse idler gear and thrust washer
from case.
Fig. 70-17 Installing Reverse Shifter Shaft and
Detent Ball
14. From inside case, tap out front bearing and snap
ring.
15. From the front of the case, tap out the counter-
shaft, using Loader J 22379 as shown in Fig. 7D-13.
Remove the countergear %nd both tanged washers.
Remove Loader J 22379 from countergear.
16. Remove the 112 rollers, six .05OU spacers and roller
spacer from countergear (Fig. 7D-8).
17. Remove mainshaft front snap ring, using J 932 as
shown in Fig. 7D-14, and slide third and fourth speed
clutch assembly, third speed gear and synchronizing
ring from front of mainshaft.
18. Spread rear bearing retainer snap ring and press
mainshaft out of the retainer (Fig. 7D-15).
13. With soft hammer, tap main drive gear down from
Fig. 70-18 Removing or Installing Extension Case
front bearing as shown in Fig. 7D-12.
Bushing
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