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10-32
GENERATING SYSTEM
BRIDGE VOLTAGE REGULATOR
POINTS
WITH JUMPER WI RE
ELECTRICAL SYSTEMS
NO.
16 BLACK PARALLEL TRACER
N
O.
10 BLACK CROSSING TRACER AND
NO.
16 GREEN
CROSSING
TRACER
NO
.
1
0 RED AND BLACK
CROSSING TRACER
(
30 8)
Figure 10-23-Current Regulator Test
b. Current Regulator Test and Adjustment
on Car
CAUTION:
Since
th
e current
regulator is
compensated
for
temperature ,
the regulator
must
be
tested at operating
temperature
which
is 1.
5 0
0
,
or very hot to the "hand.
1.
With ammeter connected in series with
regulator "BAT" terminal and the disconnected
wire, start engine and increase speed to ap-
proximately 1400 RPM.
If
test instrument has
a resistance in series with ammeter turn knob
until all resistance is cut
out.
2.
Turn on car lights to permit increased
generator output and run at this setting until
regulator reaches operating t
emperature,
then
decrease speed to idle and stop the
engine.
3.
Remove reg ulat or cover and connect a
jumper wire between upper contact and arma-
ture of voltage regulator. See figure 10-23
.
This
will prevent voltage
regulator
from operating
and reducing charging rate of
gen erator.
4. Start engine and
slowly
increase
speed
until
generator
output remains constant, which
sh
ould
occu r at
approximate ly 2000 RPM of
engine.
On
1948
Models,
ammeter
will register
34
t
o
36
amper es if current
regulator
is hot
and corre ctly
adjusted.
On 1949
S
eries
50-70,
a
mmeter will r
egister 40 to
46
a
mperes.
5.
If
charging
r
ate
is
excessively
low,
stop
t
he engine
and inspect the contact point s fo
r
oxidi zed
or
burned
cond ition, which
would
cau
se
high r
esistance in gen erator
field cir cuit
and reduce generator output. Inspect contact
points of cutout relay and voltage regulator
also.
If
any contact points are oxidized or
burned, the regulator must be removed for
proper cleaning or replacement of contacts,
(par. 10-30)
.
6.
If
contact points are in satisfactory con-
dition and charging rate is not within specified
limits, adjust armature spring tension as fol-
lows:
(a) On 1948 Models, confine adjustment to
one spring only. Bend the spring
hanger
down
toward regulator base to incr ea se charging
rate,
or bend hanger up to
decrease
rate. Ad-
LOWER SPRIN G
HAN
GER
BEN D
DO WN TO
IN
CREA SE
OR UP
TO
DECREASE
VOLTA GE
j
LOW
ER SPRI
NG
HAN GE R
L
BEND
DO W N TO INCREA SE
OR UP
TO
DECREASE
CHA RG
IN
G
RA TE
Figu
re
10
-24-Current
and Voltage Regulator Spring
Tension
Ad
justments-1948
Models
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