CHRYSLER SERVICE MANUAL
ELECTRICAL SYSTEM—107
REGULATOR
The current and voltage regulator
is
designed
to operate only
in
12-volt, negative ground
electrical system.
NOTE
Do
not
attempt
to
adjust unit unless proper
procedures
are
thoroughly understood. Other-
wise,
damage
to
entire electrical system
may
result.
29.
PREPARATIONS
FOR
TESTING
Disconnect battery before attempting to remove
regulator assembly or to connect test equip-
ment. Do not connect battery again until after
regulator removal and/or installation has been
completed. Do not connect battery when in-
stalling test equipment until equipment is in-
stalled and all connections are protected against
accidental ground. Failure to adopt these pre-
cautions may result in damage to electrical cir-
cuit parts or wiring.
Before testing regulator assembly, make sure
generator drive belt tension is correct. The bat-
REGULATOR
tery specific gravity should
be 1.230 or
higher.
Check charging circuit resistance.
The
voltage
drop
of
insulated side
of
circuit should
not ex-
ceed
.50
volt, with
10
amperes
of
current flow-
ing.
The
ground side
of
charging circuit should
also
be
tested.
30.
NORMALIZING THE REGULATOR
TEMPERATURE
Connect
a
test ammeter
in
series between
bat-
tery lead
and
regulator "Batt" terminal.
Con-
nect
a
test voltmeter from regulator "Batt"
terminal
to
ground. Connect
a
variable resist-
ance across battery. Start engine, adjust
en-
gine speed
to 1,500
r.p.m.,
and
observe test
ammeter. Adjust variable resistance
to
obtain
a load
of 10
amperes. Maintain this
10
ampere
load
for 15
minutes
to
normalize regulator
temperature.
31.
TESTING REGULATOR TEMPERATURE
When testing regulator, keep cover
in
place
and
make sure temperature
at
regulator
is
known.
The regulator armature hinges
are
temperature
V
4
-OHM FIXED RESISTOR
IN SERIES
TO
CAR
AMMETER
BATTERY LEAD WIRE
GENERATOR
56x81
Fig.
10—Voltage Regulator Test
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