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TRANSMISSION?-SPEED
M A N U A L
21 -1 7
Gearshift Mechanism
To install the gearshift mechanism, refer to (Fig.
32 or 33), then proceed
as follows:
(1)
Place two new shift lever shaft seals centered
in their bores in the case. Using Tool C-3766, drive
both seals into the case, until the tool bottoms.
(2) Install seal protector, Tool C-3767 on the end
of
low and reverse lever shaft, then slide the shaft into
the rear boss of the case and through the seal. Lock
in position with the tapered pin. Turn the lever until
the center detent is in line with the interlock bore.
(3) Slide the interlock sleeve in
its bore in the
case followed by one of the interlock balls. Install the
interlock spring and pin.
(4)
Place the remaining interlock ball on top of the
interlock spring, using Tool C-3765 (Fig. 35). (A
good method of installing the second ball is to stick
the ball in the tool recess by means of lubricant, then
use the tool to position the ball on the detent spring.)
(5)
Install seal protector Tool C-3767, on the sec-
ond and high lever shaft, depress the interlock ball,
using Tool C-3765 and at the same time install the sec-
ond and high lever into the fully seated position, with
the center detent (neutral) aligned with the detent
ball. Remove the tool. Secure the lever shaft with
the remaining tapered pin.
(6)
Install the operating levers, install and tighten
the retaining nuts securely.
(7) Place the low and reverse fork in the lever shaft,
with the offset toward rear of transmission.
M a ins
h af
t
(1) While holding the low and reverse sliding gear
in position in fork, with the hub extension to rear,
insert the mainshaft with rear bearing through the
rear of the case and into the sliding gear.
(2) A-903:
Install the spring, "anti-backlash" plate
!:
TOOL
/
NK309
Fig. 36-Anti-Backlash Plate Installed on
2nd
Speed Gear
and snap ring on the back side of the second speed
gear (Fig. 36). Make sure the snap ring is well seated
and that the plate does not bind or stick in one posi-
tion.
With the plate against the stop pin, the gear
teeth
should be plainly visible between any two teeth on
the plate. If adequate clocking is not obtainable in eith-
er direction, enlarge the pin hole in the plate with
a
round file.
(3) Place the synchronizer spreader spring, and
then the rear stop ring on the synchronizer splines
of the 2nd speed gear. Install the 2nd speed gear on
the mainshaft, (and or shims
if
required).
In cases where the synchronizer "float" measure
ment was above
.090
inch, synchronizer shims should
be installed to reduce the "float" to
.090
inch or less.
Install the shim on the shoulder of the second speed
SPREADER
2ND SPEED
\
SPRING
GEAR
INSERT
SHIM
-
AGAINST THIS FACE
Fig. 3 5 4 n s t a l l i n g Detent Balls
Fig. 37-Synchronizer
"Float" Shim Location
:498
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