20—ELECTRICAL SYSTEM
CHRYSLER SERVICE MANUAL
COVER GASKET
COVER
-COVER FASTENING SCREWS
CUT OUT RELAY CURRENT REGULATOR
*\ \ VOLTAGE REGULATOR
r~
CONTACT
POINTS
BATTERY TERMINAL ARMATURE SPRINGS
STATIONARY CONTACT BRIDGE
CURRENT REGULATOR
VOLTAGE REGULATOR J CUT jDUT RELAY
ADJUSTING
SCREWS
ARMATURE TERMINAL
SPRING HANGER
51x618
Fig.
13—Current and Voltage Regulator
WARNING
The current regulator must be cycled by re-
ducing engine speed, low enough to open cut-
out relay contacts after each adjustment. Retest
the new setting after each adjustment with cover
in place.
34.
TESTING CUT-OUT RELAY (FIG. 14)
Connect test ammeter in, series between regu-
lator "Batt" terminal and battery lead wire.
Connect variable resistance in series between
regulator field terminal and generator field lead
wire. Connect test voltmeter (0 to 15 — volts)
from regulator "ARM" terminal to ground.
If the present test immediately follows tests
of voltage and current regulators, it is not
necessary to normalize regulator temperature.
If regulator assembly is cold, normalize the
temperature.
Start engine and adjust speed to slow idle.
Rotate variable resistance control knob to full
resistance position. Slowly rotate variable re-
sistance control knob toward "no resistance"
position, while carefully observing voltmeter.
Increase engine speed slowly. The relay con-
tacts close when voltmeter hand jumps back
slightly. The closing voltage is highest reading
in volts reached before hand jumps back and
should be 13 to 13.75 volts. Rotate variable re-
sistance control knob toward full "no resist-
ance" position. Observe test ammeter. If charg-
ing rate of 10 amperes is not indicated, in-
crease idle speed slightly until reading is in-
dicated.
Slowly rotate rheostat control knob toward
"full resistance" position, while observing test
ammeter. The ammeter hand will drop toward
zero and beyond, and suddenly return to zero.
The discharge amperes noted, will be reverse
current required to open relay contacts. The
relay contacts should open at 0 to 6 amperes
discharge current, or 8.2 to 9.3 volts after
charge of 10 amperes. If adjustment is neces-
sary, use bending tool from Tool-kit C-828.
Bend lower spring hanger down to increase
closing voltage, or bend it up to decrease.
NOTE:
After each adjustment, it is essential
that a complete retest be made to determine new
values of closing voltage and discharge current
required to open relay contacts. Regulator cover
must be in place when test is made.
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