I
I
I
I
I
the temperature at the 1'egulator be known. T
he
voltage regulators
a1'e
temperature compen-
sated and the voltage control
toil!
vary
1b-ith
temperaho'e
ch
anges,
To
measure
the
te
m
perature
at
the regulator,
hold
an
accurate
Fahrenheit
thermometer, 2
inches from
the
cover,
The
co
rrect voltage
sett
ing of
the
regulator
for
various
temperatures
is found in the "Spec-
ifications,"
Page
22.
Volta qe
Regulator
Sellinq
The
test
for
voltage
setting
is
perfor
med in
the
followi
ng
man
ner:
Connect a
test
ammeter in
~eries
between
the
battery
lead and
the
regula
tor
"B
AT"
terminal.
Conn
ect
a
test
voltm
eter
from the regul
ator
"BAT"
terminal
to
gro
und.
Install
a
l,4
ohm resistor in series;
as
shown
in
Figure
9,
Start
the
engine
and
operate
at
1500 rpm,
Hold a
Fahrenhe
it
the
rmom
eter
2 inches
from the regulator cover
and
note the temper-
ature
reading.
500
AMPERE
CA'''<N
PilE
RHEOSTAT
'N"GA
TliVE
GROUND
TEST
Observe
the
voltage on the
test
voltmeter.
Compare the voltage reading
and
the
tempera-
ture
with
the
specifications listed under "Spec-
ifications."
If
an
adjust
m
ent
is required, decrease
the
engine speed to slow idl
e.
Remove
the
regulator
cover
and
bend
the
lower
hanger
of
the
voltage
regulator
(Fig. 8) down to increase
the
vollage
and bend
it
up to decrease
the
voltage,
Replace
the
regulator cover and increase the
engine
speed to 1,500 rpm. Check
the
temper
a-
ture
and voltage readings.
WARNING:
The voltage 1'egulator
must
be
cycled by reducing engine speed
low enough
lor
the cut-out relay contacts
to
open and
itlC1'ea
S-
-ing
engine speed
to
1,500 1'pm, belore 1'etesting
alte,' each adjustment,
The 1'egulator cover
must
be
in
place when the test is made.
C
Urr
ent Re
qulat
or Test
The
current
regulator is
temperature
compen-
sated. The tem
perature
must
be considered
in
the
same
man
n
er
as when
testing
the
voltage
regulator.
_~_BAnERY
tEAD
WIRE
AMMETER
"A'M.-
_
~,u,-
_
'--I<ON--
_
Fig. 10 - Current Regulator Test
35
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