Chevrolet 1956 Truck Operator's Manual page 33

Maintenance-
Distributor Points. Correct distributor point gap is very im-
portant. The distributor points are cleaned and adjusted as part
of a good engine tune-up. If their condition is questioned, re-
lease the distributor cap clamps, remove cap and lift off rotor.
Separate the points and inspect them for being pitted or badly
burned. Clean the points with a breaker point file. If the points
do not clean up with a few strokes of the file they should
be replaced.
Fig. 39-Adjustlng Distributor Points
Point Adjustment. Crank the
engine or place transmission
in high gear and rock the
truck forward enough to
place the movable point cam
follower on the peak of cam
and check the point opening,
using a feeler gauge. Correct
adjustment on the 6-cylinder
and 265 cu. in. V -8 truck
engines is .019" with new
points or .016" with used
points. Correct adjustment
on the 322 cu. in. V -8 engine
is .0175" with new points or
.0125" with used points. If
necessary to adjust the
points, loosen the stationary point lock screw and turn the
eccentric screw as necessary (fig. 39). Tighten lock screw and
recheck point opening. Install rotor, place cap on distributor
and turn it until
it
drops into locking position. Clamp the cap
in position.
Point Replacement. In case the points require replacement,
loosen the inside terminal nut at the movable point spring and
lift the point out. Remove the stationary point lock screw and
remove point and arm. Place the new stationary point and arm
in position and install the lock screw. Place the movable point
on its shaft and position the spring on the terminal behind lock
clip and tighten nut securely. Adjust new points and assemble
distributor as explained above.
Reassemble the distributor cap and spark plug wires. Make
• 31 •