CONSTRUCTION
AND FUNCTION
The
shift
lever,
extending
from
the
magnetic
switch, embraces
the
splined
sl
eeve
(I)
by its
forked
end
.
Th
e
top
end
of
this lever is held by
the magnetic switch plunger; and the
mi
ddle part
" pinned. As
lhe
plunger jumps inward upon
energizati
on
of
the switch coil,
the
lever lilts to
push the clutch toward t
he
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
cl
utch
by
th
e
Scr
ew
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
circ
u
it
:
.. -
:::r--
Contactor
;')
t
S)
d
l
I
-t!@
SW
T
--L
Ie
Starting
circuit
diag
r
am
40
a.
Turning
on
the
switch
ene.rgi2.es
the
two
toils:
or
the
magneti
c switch.
The
ini
t
ial
cu
rrent
from
the
billtery
fl
o
ws
in these two coils,
One
of
Whic
h
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.
clutch
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
contact
or
to
dose,
thereb
y
permitting
full
cutrent
to
flow through terminals (M) (B) into the
motor. Consequently,
the
mOlar runs ",ith
full
force
to
crank
the.
engine.
Unde
r
this
condition
..
thE'!
co
il
in
seri
es
with
the
mot
or
is
!:hun
t
ed
so
Ihat
practically
nO
current
flow
s in this coil, but the
other coil
(conn
ec
t
ed
between terminal (5)
an
d
gr
ound) remains
en
ergized
to
hold the plunger in
pulled-in position.
c.
Turning
off
the
switch (key switch) UpOD firing
up
of the
engine
de-energizes
th
e
holding
c
on.
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
f
rom
the
ring
gear
.
T.he
motor
will
coas:l
before
coming
to
a
hiJ.H
:
the
[;ount
c
r-eleClto-
motive force
(reverse
voltage) occurring
in
the
motor during
thi
s 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
a1lernator ,AP4012BJ
Rated
output
24
volts
, 12
.5
amperes
Ground
Negative
grQund
Outside
diameter
128
mm
(5.039 in.)
Rotating
Clockwise
as
vIewed
from
pulley
dIrecti
on
>ide
Weight
6.4
kg(l4.llb)
(2) Regulator specifications and data
Item
Specifica
t
ion
Type
Two
..
lement ty
pe
RMS4227
C.
Eloments
VollaB' regulator, and safety relay
(wilamp)
WeI~t
_ _ _
0.45 kg
(lib)
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