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ELECTRICAL SYSTEMS
GENERATING
SYSTEM
10-33
BLACK PARA
LLEL
TRACER
NO.
10
BLACK
CROSS
ING T
RACER 8.
NO.
16
GREEN CROSS
ING T
RACER
_
__
~I
O
.
1
0 RED AND BLACK
CROSSING
T
RACERS
Figure 10-25-Voltage Regulator Test
Connections
just
t
o 35 amper es. See
figure
10-24.
If a
slight adjustment of
one sp r ing
does not provide
proper setting, the
r
egulator
should
be
r
emo ved
for a
complet e
r
ead justment
(par.
10-30).
(b) On
1949 S
er ies
50-70,
turn adjusting
screw clockwise
to in
crease
charging
rate
or
coun t er clockwise to
decrease
charging
rate.
Ad
just
to 42
amperes. See figure
10-26.
The
final
setting must always be made
by in creas ing
th
e
sprin g
ten sion
and char ging
rate,
n
ev er
by
re
ducin g th
e
rate.
If
adjusting sc
re w is turn
ed clockwise be-
yond normal
r
ang e
r
equired
for
adjustment,
the
spring
support
may
be bent
so that it fail
s
to
return
wh
en
p
r essu r e is
relieved.
If
thi
s
happens,
turn th
e sc
re w
counterclockwise
until
suffici
ent clearance
exists
between screw
head
a
nd spring
support, then
bend spring support
upward
ca re f ully until conta ct is mad
e
with
sc
re w
head.
Mak
e final
adjustm
ent as described
above.
7.
Stop the eng ine , r
emove
j
umper
wi
re
but
lea ve a
mmeter connected.
Inst all regul ator
cover
with
gasket
in
proper
position.
c. Voltage Regulator Test and Adjustment
on Car
CAUTION: Since th
e v
olt age
re
ou laior is
conin
en saied.
for
temperature,
th
e regulator
mu
st
11('
test ed
at
operatinq tem.perui.u re
ichich
is 150
0
or
ve
r y hot to
the
hand. R
egul
ator
cove r
must be
in
plac
e
during
test.
1.
With wire
disconnected from "BAT"
termina l of r
egulator , con
nect
a
n
a
mme te r
and
a
1
4
ohm
va
r ia ble resistance in
se
r ies
between
"
BAT" term inal
and t
he disconnec ted
wire,
a
nd
connect voltmeter be
t ween th
is
termi nal
and g
round
on regulator
base plate. See
figure
1
0-25.
2. Start engine
a
nd in
crea se
sp
eed
t
o
ap-
proximately 1500 RP
M. Adjust
resista nce
until
ammet er
r
eads 8
t
o 10 a
m peres.
If
less than 8
amperes
is
obt ai ned, eve
n wit h
a
ll resistance
cut out, turn on
car ligh ts
t
o permit
in
creased
gen erator
out put
and a
dj us t resist a nce t
o
8-10
a
mpe re s. Run a
t t
his
setting
until regulato r
r
each es operatin g
tempe rature.
3. Wh
en re
g ulat or
becom es hot
g
raduall y
r
educe engine
sp
eed
until cut out r
ela y poin ts
open , then bring
engine spee d ba
ck to 1500
R
PM a
nd
adj
us t resistance
to
g
ive
cha rging
rate of 8-10 a
mp
eres.
The
volt meter
wi
ll
read
7.2
to
7.7
volts if
voltage r
egulator is
prope r ly
adj us ted.
4.
If
voltage
is not
within sp
ecified limits,
r
emo ve
r
egulator cover a
nd
a
dj ust
armature
spring t
ension as
f
ollow s:
(a) On
1.948 Models , confine adjustment
t
o
one sp
r ing onl
y. Ben
d th
e
spring
hanger down
toward
r
egulator
base
t
o
in
crease
voltage
or
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