Lincoln Continental 1964 Shop Manual page 266

(265)
13-11
Section Page
PART
13-3
REGULATOR
1 Description and Operation ............... 13-11
2 In-Car Adjustment and Repair ............. 13-11
3 Removal and Installation ................. 13-12
II
DESCRIPTION AND OPERATION
The alternator regulator is com-
posed of two control units, a field
relay and a voltage limiter, mounted
as an assembly (Fig. 1). Because
the reverse current through the rec-
tifier is small, a reverse current cut-
out relay is not needed. The alter-
nator is self current limiting, thus a
current limiter is not needed.
FIELD RELAY
The field relay serves to connect
the battery and alternator output to
the field circuit when the engine is
running (Fig. 1, Part 13-1). When
the ignition switch is dosed, the field
relay is energized. Closing of the
relay contacts, connects the battery
and alternator output to the field
through the voltage limiter contacts.
VOLTAGE LIMITER
The temperature compensated vol-
tage limiter is a double contact unit.
Limiting is accomplished by control-
ling the amount of current supplied
to the rotating field.
When the upper contacts are
closed (Fig. 1, Part 13-1), full sys-
FIG.
1-Aiternator Regulator
tern voltage is applied to the field
and maximum field current will flow.
When the limiter armature floats
between the contacts, field current
is reduced by flowing through the
field resistor. When the limiter lower
contacts are closed, zero current
flows to the field. At low engine
spred and with a load applied, the
BATIERY TERMINAL FOR
FIElD SUPPLY VOLTAGE
J1214-B
armature vibrates on the upper con-
tact. At high engine speed and light
or no load, the armature vibrates
on the lower contact.
A 50-ohm resistor is connected
from the field terminal to ground to
absorb electrical surges in the alter-
nator circuits as the voltage limiter
armature vibrates on the contacts.
EJ
IN-CAR ADJUSTMENT AND REPAIR
REGULATOR ADJUSTMENTS
Erratic operation of the regulator,
indicated by erratic movement of the
voltmeter during a voltage limiter
test, may be caused by dirty or pitted
regulator contacts. Use a very fine
abrasive paper such as silicon car-
bide, 400 grade, to clean the field re-
lay and the voltage limiter contacts.
Wear off the sharp edges of the abra-
sive by rubbing it against another
piece of abrasive paper. Fold the
abrasive paper over and pull the
paper through the contacts to clean
them. Keep all oil or grease from
contacting the points. Do not use
compressed air to clean the regulator.
When adjusting the gap spacing usc
only hospital clean feeler gauges.
GAP ADJUSTMENTS VOLTAGE ADJUSTMENTS
CORE GAP
ADJUSTING SlOTS
BEND ADJUSTING ARM
DOWN TO INCREASE
VOLTAGE LIMIT
BEND AR:M UP TO
DECREASE
VOLTAGE LIMIT
USTING ARM DOWN
TO INCREASE CLOSING
VOLTAGE. BEND ARM UP TO
DECREASE CLOSING VOLTAGE
FIG.
2-Regulator Adiustments
J1217-B