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PART 9-1-
GENERAL IGNITION SYSTEM SERVICE
9-7
inal rpm setting when going to a
different vacuum setting. If the
other settings are not within limits,
it
ind~cates
incorrect spring tension,
leakage in the vacuum diaphragm
and/
or line, or the wrong fibre stop
has been installed in the vacuum
chamber of the diaphragm housing.
To check the diaphragm for leak-
age:
Remove the vacuum line from the
distributor. Adjust the vacuum pres-
sure of a distributor tester to its
maximum position. Hold your hand
over the end of the tester's vacuum
hose and note the maximum reading
obtained.
Do not exceed lS inches
HK.
If the maximum reading is 25
inches Hg or
less,
connect the tester's
vacuum line to the vacuum fitting on
FIG. 7 -
Centrifugal
Advance Adjustment
EJ
COMMON ADJUSTMENTS
AND REPAIRS
BREAKER POINTS AND
CONDENSER
REPLACEMENT
Dual Advance Distributors
Removal
1. Remove the distributor cap and
the
rotor.
l. Disconnect the primary and the
condenser wires from the breaker
point
assembly.
3. Remove the breaker point as-
sembly
and
condenser
retaining
screws.
Lift the breaker point assem-
bly and condenser out of the distribu-
tor.
Installation
1. Place the breaker point as-
sembly and the condenser in position
and install the retaining screws. Be
sure to place the ground wire under
the breaker point assembly screw
farthest from the breaker point con-
tacts.
l. Align and adjust the breaker
point assembly.
3. Connect the primary and con-
denser wires to the breaker point as-
sembly.
4. Install the rotor and the distr-i-
butor
cap.
BREAKER POINT
ALIGNMENT
The vented-type breaker points
must be accurately aligned and strike
squarely in order to realize the full
advantages provided by this design
and assure normal breaker point life.
Any misalignment of the breaker
point surfaces will cause premature
wear, overheating and pitting.
1. Turn the cam so that the break-
er
points are closed and check the
alignment of the points
(Fig.
9
)
.
riil\:a:~
\8)
CORRECT-~
ALIGNMENT
C O N T A C T @
AREA
NOT
CENTERED
M~::::@NT
AREA NOT
CENTERED
ISALIGNMENT
OF POINT FACES
11019-A
FIG. 9 -
Breaker Point
Alignment
If
the distributor
is in
the
engine,
close the points by proceeding
as
follows:
Disconnect the brown wire
and the
red
and
blue
wire
from
the starter
relay
and, with
the ignition switch
off, crank the
engine by using
an
aux-
iliary starter
switch between
the
S
and the battery terminals of the start-
er relay.
l.
Align the
breaker points
to
make
full
face contact by bending the
stationary breaker point bracket
(Fig.
10)
.
Do not bend the breaker arm.
SPACING WASHERS
FIG.
8
-
Vacuum
Advance
Adjustment
'
the diaphragm without changing any
of
the
adjustments. The maximum
gauge reading should not be less than
it was
above.
If
it is less, the dia-
phragm
is leaking and should be re-
placed.
BEND STATIONARY
BRACKET
FIG.
10-
Aligning
Breaker
Points
3. After the breaker points have
been properly aligned, adjust the
breaker point gap or dwell.
BREAKER
POINT
GAP
ADJUSTMENT
A scope, a dwell meter, or a feeler
gauge
can be used to check the gap
of
new breaker points.
A scope or a dwell meter can be
used to check the gap of used breaker
points. Due to the roughness of used
points,
it is not advisable to use a
feeler
gauge
to check the gap.
To check and adjust the breaker
points with a feeler gauge:
1. Check and adjust the breaker
point alignment.
l. Rotate the distributor until the
rubbing
block rests on the peak of a
cam lobe.
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