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TM 9-2520-246-34
NOTE
During installation. place rear bearing on
the mainshaft and aline the bearing with
the transmission opening. Use wooden
block and mallet to drive the bearing into
place.
i. Fourth- and Fifth-Sped Synchronizer. Firmly
apply downward pressure to the rear of the mainshaft
while sliding the fourth- and fifth-speed synchronizer
from the mainshaft. (See fig. 3-27.)
j. Mainshaft AssembIy. Hold the mainshaft in the
Figure 3-26. Removal of Mainshaft Rear Bearing.
rear position as illustrated in figure 3-28. and tilt the
front of the shaft upward. Slide the mainshaft from
1. Countershaft Rear Bearing. Hold the
the first and reverse gear, leaving the gear in the case.
countershaft gears in locked position by using a wood
wedge block between the gears and the transmission
NOTE
case. Remove the cotter pin from the countershaft
assembly, the retaining nut, and the washer. (See fig.
During installation, slide the mainshaft into
the first and reverse gear and through the
transmission case bearing opening.
Figure 3-27. Removal of Fourth- and Fifth-Speed
Figure 3-25. Removal of Input Shaft Bearing Cap.
Synchronizer.
NOTE
k. Idler Gear Assembly,. Screw adapter (item 3,
table 2-1) into idler gear shaft. Thread slide handle
puller into adapter and pull idler gear shaft from
When installing the retaining nut, tighten
housing. (See fig. 3-29.) Tilt idler gear.
to 120- 150 lb-ft torque.
NOTE
m. Countershaft. Slide the shaft rearward out of
the front bearing. Extend the shaft out of the front
During installation, insert the idler gear
bearing and extend the shaft through the rear bearing
shaft in the outer transmission case opening
bore. then remove the countershaft assembly from the
and through the idler gear assembly. Aline
transmission case. (See fig. 3-31.)
the shaft with the bracket opening and.
n. Countershaft Front Bearing. Using a soft drift
using a soft hammer. drive the shaft into
position. The indentation of the shaft must
pin and mallet, working from inside the transmission
be alined with the outer case housing and
case assembly, drive the front bearing retainer from
cutaway section of the countershaft rear
the transmission case. (See fig. 3-32.) Remove bearing
bearing cap.
from transmission case.
3-14

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