Testing And Adjusting Generator - Plymouth Pl4S Service Manual

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GENERATOR REGULATOR
141
I. TESTING AND ADJUSTING
GENERATOR REGULATOR
1940-42 (Models P9-P10-Pll-P12-
P14)--Cont'd
contacts· will become grayed. If the con-
tacts are burned or dirty or if they are not
smooth, file them with a No. 6 American
Swiss cut equalling file. Move the file paral·
lel and lengthwise to the armature. File just
enough so that the contacts present a smooth
flat surface toward each other. It is not
necessary to remove every trace of burning.
After filing, dampen a piece of linen tape in
refined carbon tetrachloride and draw the
tape between the contacts. Repeat with a
dry piece of tape. Use clean tape for each set
of contacts.
( 8)
Bend the lower armature spring
holder to secure proper closing voltage
(fig. 2 ). Vary the contact point spacing to
secure opening voltage adjustment. Keep
the contacts aligned and not less than .015
inch gap.
( 9)
lf necessary, bend the lower spring
hanger so that the points will close at 6.4 to
6.6 volts.
( 10) Adjust the point gap (fig. 3) so
that the points will open at 4 to
6
amps dis-
charge as the engine speed is reduced. ·
b. Voltage Regulator.
( 1) Change voltmeter connection from
armature to battery terminal of regulator
(4,fig.l).
(2) Maintain engine speed equivalent
t9 about 30 miles per hour car speed for 15
minutes.
( 3) The voltage regulator must control
the voltage to 7.1 to 7.3 volts, with the cover
on the regulator.
( 4)
If an adjustment is necessary, bend
the lower spring hanger of the voltage regu-
lator as shown in figure 2 to increase or
decrease the spring tension. This adjustment
must be made carefully so that the voltage
will be within specifications with the regu-
32X 133
Figure 2-Generalor Regulator Spring Hangers
(1937-42 Models)
Figure 3-Adjusting and Aligning Circuit Breaker
Contact Points (
1937-42 Models)
Jatar at normal operating temperature and
with the cover installed.
CAUTION
When removing and installing the
. cover, exercise care (o prevent
touching the cov~r on the circuit
breaker which would cause a
short circuit and damage the
regulator assembly.
c. Current Regulator.
( 1) Connect a variable resistance
across the battery posts and leave the volt-
meter and ammeter connected as when
testing the voltage regulator (paragraph b).