TM 5-3810-294-34
i. Place countershaft front bearing spacer (68) in
(15) Center splines in synchronizer hub and gears
position on forward end of countershaft (75).
so splines on shaft (44) can be installed. Rotate shaft
j. Tip rear end of countershaft down and lower
until splines are lined up. Install shaft and rear bearing
into housing, running rear of countershaft bearing opening
(38) into hole using proper driver.
in rear of housing far enough so that the front of
(16) Install gasket (35) and cover (34) with
countershaft may be lowered into position.
capscrews (32) and lockwashers (33).
k. Install countershaft rear bearing (81 ). Be sure
that retaining ring is in position in the groove of the outer
Note. Use sealing lead on threads of screws.
race of bearing. Press bearing into position on shaft with
retaining ring toward rear.
(17) Return assembly to horizontal position
I. Insert bearings (23 and 25) separated by
(18) Insert bushing (51) and lock pin (52) with
spacer (24), into hub of reverse idler gear (26), and lower
lock pin toward front of case. Align oil hole in bushing
into position in case. The gear with chamfered teeth
with hole in shaft.
should be toward the rear of the case.
Caution: Use extreme care when in-stalling
m. Insert reverse idler shaft (28) through hole in
bushing (51) so as not to damage bushing in gear
rear of case. Place thrust washers (22 and 27) with
(53).
copper face toward the gear. Line up locating notches,
(19) Place thrust washer (54) on shaft with oil
then put shaft through gear (26) and into forward support
groove facing the gear.
boss. The shaft should be driven in until the forward face
(20) Install output shaft front bearing (55).
of slot in shaft is flush with rear face of housing and slot
(21) Install companion flange, flanged washer
lined up to permit installation of lock plate (29).
(30), and nut (29). Hold gear (48) with a pinch
n. Install lock plate (29) in end of shaft and
bar and torque nut to 500-600 foot-pounds.
secure with screw and lockwasher (30).
(22) Place cotter pin (28) in shaft to secure nut in
o. Install mainshaft assembly (48) in trans-
place.
mission housing. Tilt rear end of assembly down and
(23) Install front bearing retainer nut (56).
lower into and through opining in rear of housing. Lower
(24) Hold gear (48) with a pinch bar and tighten
front end in line with pilot bearing opening, and move
retainer nut (56).
mainshaft assembly forward into position.
Note. Companion flange nut must be tightened
p. Install main drive gear and bearing assembly
before output shaft front bearing retainer nut.
into opening in front of housing so that main drive gear
(25) Install output shaft oil baffle (57), a, and
engages and meshes with countershaft gear.
capscrews (59) and lockwashers (58).
q. Install main drive gear bearing cap (1) and
(26) Install high-low shift fork (19) with Iong hub
gasket (2).
or fork toward front of case.
Caution: Be sure oil return hole in cap is lined up with hole
(27) Install air shift cylinder with capscrews and
in housing. This passage must be open and clean.
lockwashers. Insert shaft through fork.
r. Install main drive gear bearing cap attaching
Note. Use sealing lead on threads of screws.
hardware.
(28) Place spacer (22) on shift rod (21).
s. Install countershaft rear bearing spacer (82).
Note. Be sure holes in shaft and fork line up.
t. Install countershaft rear bearing retainer nut
Install lock screw (18) into fork and tighten. Install
(83); tighten, and stake.
lockwire. Lock-wire should be installed over right end of
u. Using suitable driver, assemble inboard half of
shift fork (19).
mainshaft rear bearing (44) over end of mainshaft (48).
(29) Place shift rod adapter gasket (23) and
v. Install drop gear housing shim (45). Use
adapter (24) over shaft, and insert in housing with oil drain
sealant on both sides of the shim.
hole in adapter down. Use capscrews (26) and
w. Position mainshaft in housing.
lockwashers (25).
x. Drive rear bearing cap (39) and gasket (40)
Note. Use sealing lead on threads of screws.
onto mainshaft (48) until it is flush against case. Be sure
(30) Place control cover gasket (4) and control
oil passage openings in bearing cap line up with openings
cover (3) on housing. Install capscrews (1) and
in housing.
lockwashers (2).
Note. Install two studs in housing to keep bearing cap
Note. Install the control cover with the rib at the
aligned while it is pressed into housing.
bottom.
y. Slip bearing spacer (43) on end of mainshaft.
(31) Install air solenoid valve (12) and reconnect
hoses (8 and 15).
h. Install countershaft front bearing (67, fig. 14-
3). Be sure to apply pressure on outer race of bearing
only.
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