TM
9-879
53-54
MOTORCYCLE, SOLO (HARLEY-DAVIDSON MODEL
WLA)
Section XIV
TRANSMISSION
Paragraph
Description , 53
Control linkage 54
Replacement of foot starter crank 55
Replacement of starter crsnk spring
56
Remove transmission 57
Install transmission
58
53. DESCRIPTION.
•
a. Transmission has
three
speeds: low.
second, and high, and is
of the constant-mesh, non-selective
type.
High gear is direct dr:ve.
Since
"dogs" on
gear
shifter clutches
are used to engage transmission
gears,
it is
of
great importance
that vehicle clutch is correctly ad-
justed.
Clutch must be fully disengaged
when shifting
gears, to
pre-
vent
clashing of gears, and possible
damage
to the shifter
clutch
"dogs" and
transmission
gears. It
is also important that gear shifter
control linkage be kept in
correct adjustment to ensure full
engage-
ment of shifter clutch driving dogs in all positions, thus pre%'enr.ng
possible damage caused by dogs jumping out
of engagem.ent
under
driving load. Close fitting
and needle
roller bearings,
within
the trans-
mission,
necessitate use of engine oil (seasonal
grade) in transmission
case
for adequate lubrication.
54. CONTROL LINKAGE
(fig. 32).
a. Transmission Shifted
lo .\djust Front
Drive
Chain. The
transmission is located to receive power from front (engine) drive
chain and transmit power
through
rear drive
chain to rear wheel.
and is movable
on its
mounting
for
adjustment
of the front (engine)
drive chain. When
front (engine)
drive
chain is adjusted, trans-
mission
gear
shifter control
linkage is affected.
Therefore,
after each
front drive cham
adjustment, gear
shifter
control linkage must be
checked, and. if necessary, correctly adjusted
to ensure proper gear
shifting with full engagement of the gear
shifter
clutch driving
"dogs" as
well
as prevent transmission from jumping out of gear
under load.
b. Checking Gear Shifter Control Linkage.
Before making
adjustment to gear shifter
control linkage, make the
following
checks; See that all linkage
points from transmission gear shifter
lever
to gear
shifter
hand lever are well
oiled and
free-working.
Check
hand
lever pivot
boit
nut
for
tightness. Observe
whether
there
is binding or interference with
shifter rod at
any point
in the shifting
range: this
sometimes
results
from a bent shifter
rod.
Check whether
96
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