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ENGINE-ELECTRICAL 6Y-21
Fig. 6i—Distributor Lead Arrangements
NOTE:
End of cam lubricant wick should be
adjusted to just touch cam lobes. Over lubrica-
tion of cam resulting in grease on contact points
can- be caused by cam lubrication wick bearing
too hard against cam surface. A correctly ad-
justed cam lubricator wick will provide adequate
lubrication for cam. Do not apply additional
grease to cam surface.
7. Start engine and check point dwell and ignition
timing.
ACTUAL POINT OPENING .021
.016 FEELER GAUGE
L O C A T O R _ _ _ J H ^ H
(ROUND) V ~ ^ 3 H |
CENTRIFUGAL
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ADVANCE -~-»JBlMBl
MECHANISM
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H
CAM
g ^ k . / X
L U B R I C A T O R
V ^ ^ ^
R E P L A C E M E N T
^
£
9
^-ADJUST SQUARELY
A N D JUST
TOUCHING LOBE
OF CAM
.ROTOR
I ^ ^ I ^ B L LOCATOR
( P B V
7 ( S Q U A R E )
SBSSF /
W W j g a ^ /
^ / LUBRICATOR
H ^ f
CAUTION!
S 5 y
NEVER OIL
• - ^
C A M LUBRICATOR-
REPLACE WICK
WHEN NECESSARY
Fig. 8i—Inaccurate Gauging of Rough Points
SETTING DWELL ANGLE
Four and Six Cylinder Engine Distributors
The point opening of new points can be checked with a
feeler gauge, but the use of a feeler gauge on rough or
uncleaned used points is not recommended since accurate
mechanical gauging cannot be done on such points (fig. 8i).
Contact points must be set to the proper opening.
Points set too close may tend to burn and pit rapidly.
Points with excessive separation tend to cause a weak
spark at high speed. Proper point setting for all
models are:
.019" for new points
.016" for used points
New points must be set to the larger opening as the
rubbing block will wear down slightly while seating to the
cam. Contact points should be cleaned before adjusting if
they have been in service.
LATERAL
MISALIGNMENT
PROPER
LATERAL ALIGNMENT
pCORRECT LATERAL MISALIGNMENT BY
M BENDING FIXED CONTACT SUPPORT
[NEVER BEND BREAKER LEVER
Fig. 7i—Top View of Distributor
Fig. 9i—Alignment of Points
CHEVROLET CHASSIS SERVICE /MANUAL
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