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CONSTRUCTION AND FUNCTION
The shift
lever,
extending from the magnetic
switch
,
embraces the
splined
sleeve
(I)
by its
forked
end. The
top
end
of this
lever is
held
by
the
magnetic
switch plunger; and the
middle
part
"
pinned.
As lhe plunger jumps inward upon
energization of the switch coil, the
lever
lilts to
push
the clutch toward
the
ring
gear.
When
tltis
lever-shifting action occurs
in
actual starting up of
the
engine,
the
motor will be rotating
father
-
::;::-
--::-
(±>
Sllunt
wind
ing
slowly to
advance
the clutch
by
the
Screw action
due
to
the helical
splines.
Thus,
the
pinion
advances
rol:!tingly to
mesh into the ring gear.
(4)
Start ...
operation
How
the
starter
is operated to crank the engine
will
be explained
sequentially in reference
to
tltis
schematic diagram
of
the
starter
circuit
:
.. -
: ::r--
Contactor
;')
t
S)
d
l
I
-t!@
SW
T
--L
Ie
Starting
circuit diagram
40
a.
Turning
on
the
switch ene.rgi2.es the two toils:
or
the
magnetic
switch.
The initial
current
from the
billtery flows in these two coils, One
of
Which
is
connected in
series
v.ith
the motor
I
so
that
the
motOr begins
to
run
but slowly
because the
initial
current 1S rather small
.
In the meantime
,
the
two
coils pull in the pJunger to push the overrunning.
clu tch loward the ring
gear.
The
clutch sUd ..
along the hetical splines
and,
for
the
reason already
stated.
advances smoothly to mesh
its pinion
with
the ring
gear_
b.
As
the pinion
meshes
into the ring ge .. fuUy
,
the
plunger
i5
allowed to mOve
in
alllhe way. making
its
contactor
to
dose,
thereby
permitting
full
cutrent to flow through
terminals
(M)
(B)
into
the
motor.
Consequently, the
mOla
r
runs ",ith
full
force to crank
the.
engine
.
Under
this condition ..
thE'! coil in series
with
the
motor
is
!:hunted
so
Ihat
practically
nO
current
flows
in
this
coil,
but
the
othe
r
coil (connected
between terminal
(5)
an
d
ground)
remains energized
to
hold the plunger in
pulled-in
position
.
c.
Turning off
the
switch
(key
switch)
UpOD
firing
up
of
the
engine
de-energizes
the
holding
con.
sO
that
,
by the foro.
of
the
return
spring, the
plunger
sn,p'
back
10 the original position,
thus
disrupting the mator current
and pulling the
pinion away from the
ring
gear.
T.he motor
will
coas:l before coming to
a
hiJ.H
:
the
[;ountcr-eleClto-
motive force (reverse voltage) occurring in
the
motor
during
this
coasting
helps the plunger move
outward.
Alternator and regulator writ
(I) Alternator spe";lioatians
and dBta
The
alternator
is
complete: with a
reclifier.
Item
Specification
Type
Enclosed.type a1lernato
r
,AP4012BJ
Rated output
24
volts,
12
.5
amperes
Ground
Negative
grQund
Outside
diameter
128
mm
(5.039 in.)
Rotating
Clockwise
as
vIewed
from
pulley
dIrection
>ide
Weight
6.4 kg(l4.llb)
(2)
Regulator specifications and
data
Item
Specification
Type
Two ..
lement type RMS4227
C.
Eloments
VollaB' regulator
,
and safety
relay
(wilamp)
WeI~t
_
_
_
0.45
kg (lib)
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