ENGINE 6-3
Fig. 3— Cleaning and Inspecting Distributor Cap, Rotor & CoiI
2. Clean rotor and inspect for damage or deterioration.
Replace rotor where necessary.
3. Replace brittle, oil soaked or damaged spark plug
wires. Install all wires to proper spark plug. Proper
positioning of spark plug wires in supports is im
portant to prevent cross-firing.
4. Tighten all ignition system connections.
5. Replace or repair any wires that are frayed, loose
or damaged.
Distributor (Figs. 4 or 5)
1. Check the distributor centrifugal advance mechanism
by turning the distributor rotor in a clockwise direc
tion as far as possible, then releasing the rotor to
see if the springs return it to their retarded position.
If the rotor does not return readily, the distributor
must be disassembled and the cause of the trouble
corrected.
2. Check to see that the vacuum control operates freely
by turning the movable breaker plate counterclock
wise to see if the spring returns to its retarded
position. Any stiffness in the operation of the vacu
um control will affect the ignition timing. Correct
any interference or binding condition notedc
3. Examine distributor points and clean or replace if
necessary.
• Contact points with an overall gray color and
only slight roughness or pitting need not be
replaced. Fig. 4— Distributor (In Line)
CAM LUBRICATOR
CONTACT SET
ATTACHING
SCREW
BREAKER PLATE
ATTACHING SCREWS
QUICK
DISCONNECT
TERMINAL
10-30 CHEVROLET TRUCK SERVICE MANUAL
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