Chevrolet Corvette 1953 Operation Manual page 46

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9. Place
tbe new stationary point and arm
in position
and
install the lock
screw.
10. Place
the movable point on
its
shaft and position
the
spring
on the terminal behind
lock
clip and
tighten
nut
securely. Adjust points
as
described
in following
steps
11-15.
Adjustment
11.
Crank
the
engine until
the distributor
point
cam
follower rests
on
the
peak of
the
cam.
12. Check the point open-
ing using a feeler
gauge
(fig.
66).
Correct
adjustment is .016- for
used points and .019-
for Dew points.
If
necessary
to
adjust the
points, loosen the sta-
tionary
point
lock screw
and
turn the eccentric screw
as
necessary.
This operation mus,l be performed very
accuratcly because
il
affccts
the poim dwell or length
of lime
the
points
remain closed in operation and, in
tum,
ignition coil performance.
Tighten lock
screw and recheck
'point opening.
14.
Check breaker arm
tension
.
Crank engine until
cam
follower
is located
between cams. Using a
distributor
point
scale,
hook
end of
scale
over movable point
and
pull steadily on
the
spring scale
until the
points just
start
to
open.
At this point the reading on
the
scale
should be between
19
and 23 ounces. Adjust
if neces-
sary
by
loosening
outside
terminal
nut on distributor
and moving
spring to give desired
tension.
15.
Install rotor, place
cap on
distributor
and lurn it
until
it
drops
into locking
position. Clamp
the
cap in posi-
tion and
install
spark
plug wires
to
cap.
Make sure
that the terminal
of
the primary wir,e
at
the ignition
coil
and distributor
are clean and
tight. Replace upper
ignition
shield.
F"
.
67-U"Q.n.~
St:(tclor
OCTANE SELECTOR
Since differences
exist
in
various
fuels
sold commer-
ciaUy. it may
be advisable
to
advance or
retard the
spark slightly to take ad-
vantage of
the particular
fuel
being
used.
Note
the
position
of
the
octane
se-
lector
scale
(fig.
67).
then
loosen
the damp bolt and
move
the distributor
43

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