CONTACT POINTS
Inspection
After each 100 hours of operation the breaker contact points should be checked for wear and
adjustment.
The visual inspection should be a part of the 100 hour check;
COLOR - The normal color for contact points is a light gray.
If the surfaces are black, the
cause is usually due to the presence of oil, dirt or foreign matter.
If the contact point surfaces are blue, the cause is usually due to overheating because of:
1. Improper alignment of contact points.
2. Excessive high wattage in the primary circuit of the ignition coil.
3. Poor condenser.
CONT ACT SURF ACE WEAR - wear patterns that, can exist and their causes.
23_, _.0~1_0"
REPLACE CONTACT
SET WHEN TRANSFER
EXCEEDS . 01
O"
=:_=:_=:_=_=_=_=_= _= _= ...,..''-,, +
I
TRANSFER OF MATERIALS
FROM- POINT TO+ POINT
b2J+
~
TRANSFER OF MATERIALS
FROM+POINT TO-POINT
F-9
IDEAL CONTACT POINT WEAR PATTERN
CONT ACT POINT WEAR PATTERN SUCH
AS THIS INDICATES CONDENSER CAP-
ACITY MAY BE TOO LOW- THIS IS A
NORMAL WEAR PATTERN, BUT INDICATES
WHY THE CONDENSER SHOULD ALWAYS
BE REPLACED AT THE SAME TIME POINTS
ARE REPLACED.
CONTACT POINT WEAR PATTERN SUCH
AS THIS INDICATES CONDENSER CAPACITY
MAY BE TOO HIGH- USE ONLY GENUINE
CASE CONT ACT POINTS - CONDENSER RE-
PLACEMENT SETS TO INSURE THE COR-
RECT CONDENSER CAPACITY AND CON-
DENSER LEAD WIRE LENGTH.
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