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Slowly rolale the variable
resi8tunce
control
knob toward the "no resistance" position while
carefully observing the voltmeter.
The
relay
contacts close
when
the voltmeter hand jumps
back
slightly.
The
closing voltage is the highest
reading in volts reached before the hand jumps
back and should be from
13
to
13.75
volts.
Rolate
the variable resistance
control
knob
toward the "no resistance" position and ohserve
t
he
test ammeter.
If
a
charging
rllte of
10
am-
peres is not indicated, increase the idle
speed
slightly
until
t
he
reading
is indicated.
Slowly rotate the
rheostat
control knob to-
ward the "full
res
istance"
position, while ob-
serving
the
test
ammeter. The ammeter hand
will drop toward zero ann beyond. and then sud-
denly return to zero. The discharge amperes
noted will be the revcrse
cu rrent
required to
open the
relay
contacts.
The relay contacts
should
open at 0 to
6
am-
peres discharge
cur
rent (S.2
to
9.3
volt!;) after
a charge of 10 amperes.
If
an adjustment
is
neces~ary,
use the bend-
ing tool from Kit
C-82S.
Bend the lower
spring
hanger down to
increa::e
closing voltage, and
bend it
up
to decrease the closing voltage (Fig.
8)
.
NOTE:
.4fte'·
each
ad1ust-ment,
it
is
essential
that a
complete
l'etest be made in o1"det· to deter-
)nine
the nel(..' values of
the
closing voltage
and
the
discha1·ge curl·ent required to
open
Ihe 1"elall
contacts.
R egulator COVe)'
must be
in place
when
test
is
made.
IGNITION COIL
The 12-volt ignition coil operates with
a
ballast
resistor in
series
\vith the primary winding.
The
re~istor
is separate
fr
om
the coil and
is
connected
in
the
circuit between the "Ign" ter-
minal on
the
horn
reh"lY
and
the
+
terminal of
the
ignition
coil.
The negative (
-
)
terminal
of the igniti
on
coil
must always be connected to the distributor
primary terminal for maximum
output
of the
coil.
Iqnilion
Coil T
estinq
The
ballast resistor is mounted at the
h~H'n
relay and is in series between the coil and the
horn relay.
When testing the coil for output it is
essential
that the ballast resistor be
incJudeo
in
the con-
37
nections to the coil tester. Failure to do
so
will
ca use
the coil to test out as being defective.
The secondary resistance
at 70° to 80° F.
is
8,000 to 9,200 ohms. The primary resistance
at
the
same
temperature is
1.64
to
1.78 ohms.
The
ballast
resistor resistance at 70 to SO degrees
F.
is
.665
to .735 ohms.
NOTE: Follow
the
testing inst?-uctions
Qutlined
by the coil test equipment manufactu1"c1· but,
be
sure ballast
·resistor
is
included
in
output
test.
DISTRIBUTORS
Two types of
di stributors
Me
used
on the 1956
Model Chrysler cars; a single brcaker point
dis-
tributor is provided for the C-71 Models, Figure
12
and
a
dual breaker point distributor for
the
C-72,
C~73
and C-70, Models, Figure
13.
Both automatic and vacuum advance
are used
on all distributors.
Aliqning
Distributor
Contact
Points
It
is absolutely
essen~ial
for good ignition
to
align the points so that the po:nt of contact
will
be in the
center.
The gap should be adjusted
to
.015 to .018 inch. Where a dwell meter is
m;ed,
the gap should be adjusted as follows:
Single breaker point distributor 29 deg]'ees
to
32 degrees. Dual breaker point distributor
36
degrees to 39 degrees for
both
points
or
29
de-
grees to 32
deg
rees for each.
Be
sure
that
the
gap
is within the tolerance
of
.015 to .018 inch
after an adju8tment by the rlweJl method
is
made. The
spring
tension
should
be 17 to
20
ounCeS.
The advance curves for
testing
the distri
bu-
tor advance are listed under "Specifications."
Voltaqe Drop of Primary Circuit
The use of
12-volt
ignition systems
makeR
it
necessary to
keep
all electrical connections cJeun
and tight. Loose elcctl'icul
connections
cau
ses
heat
and
an increase in circuit resistance. To
test the primary circuit
for
high
resistance.
refer to
Figure
14 and proceed as follows:
With a low
rearlin
g
voltmeter having
scale
division!-l of .10 volt connected, us
shown
in Fig-
ure 12. Inspect the
distributor
contact points
to
be
sure
they are closed.
If
they are not
closed,
rotate the fan belt or
crank the
engine
over
until the contact points are fully closed. Turn
on the ignition switch and observe the volt-
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