SERVICE MANUAL
ELECTRICAL SYSTEM—23
contacts. Connect
low
reading voltmeter (with
scale divisions
of %
0
volt) from switch side
of resistor
to
battery connection
at
relay
or
junction block
(Fig. 18).
Turn ignition switch
on and
observe volt-
meter.
A
reading
in
volts that exceeds
.2
volt
indicates
a
loose connection
in
circuit between
voltmeter leads
or
poor contact
in
ignition
switch. Move
key off and on
while noting volt-
meter.
A
reading that varies, also indicates
poor contact
in
switch. Clean and tighten loose
connections and/or replace defective switch.
SERVICING DISTRIBUTOR
37.
REMOVAL AND INSTALLATION
OF DISTRIBUTOR
a. Removal
Disconnect vacuum tube and primary lead wire.
Lift
off
distributor
cap and
remove distributor
hold down lock plate
and
distributor.
(On
cars
equipped with power brakes remove vacuum
line fitting
in
manifold.)
b.
Installation
Make sure number
one
piston
is at top
dead
center
and
install distributor
so
that rotor
is
pointing
to
number
one
firing position. Install
lock plate and screw, but do not tighten. Rotate
crankshaft
to
align specified degree mark
on
vibration damper with ignition timing indicator
pointer. Rotate distributor until contacts
are
just opening
and
tighten hold down plate.
In-
stall vacuum tube, primary lead and distributor
cap.
38.
IGNITION TIMING (FIG.
19)
Make certain distributor
is
properly installed
in engine. Install timing light and start engine.
Allow engine
to
warm
up
sufficiently
to
enable
carburetor fast idle mechanism
to
position
for
ATTACH
TO NO.l
SPARK PLUG
WIRE ADAPTER
-TO BATTERY
CHALK
MARK
57x361
Fig.
19—Ignition Timing
(Typical View)
slow idle speed. Loosen distributor lock plate
and rotate distributor clockwise
or
counter-
clockwise
to
align proper degree mark
on vi-
bration damper with ignition timing indicator
points. Tighten lock plate.
39.
CHECKING DISTRIBUTOR GOVERNOR
ADVANCE
Install distributor assembly
in
test bench
and
check governor advance
as
recommended
by
equipment manufacturer.
Adjust governor advance
by
bending outer
spring
lug of
light spring
for low
speed
and
outer
lug of
heavy spring
for
high speed
op-
eration.
40.
CHECKING DISTRIBUTOR VACUUM
ADVANCE
After checking governor advance check vacuum
advance.
If
vacuum advance
is out of
specifica-
tions adjust
by
adding
or
removing washers
as follows: Remove retaining plug
and
gasket
MAKER POINTS
LOCK SCREW
CAM
STATIONARY PLATE
51x156
Fig.
20—Installing
and
Aligning Contacts
(Typical View)
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