TM 55-1905-220-14-8
4-7.5. MAGNETO ASSEMBLY - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
ADJUSTMENT (Con')
t
(d) Using a feeler gage, check the gap between the points in their full open
position. The gap should be 0.020 inch (0.051 cm).
b. To adjust the breaker point gap. The breaker points are actuated by the cam
attached to the camshaft and are attached to the armature plate by an anchor or
pivot screw and an adjusting screw. A rubbing block is attached to the breaker
arm which rides on the cam and as the crankshaft is rotated, the breaker points
are opened and closed. The breaker gap setting is accomplished by shifting the
breaker baseplate toward or away from the breaker cam on the crankshaft.
Breaker point gap is increased by moving the assembly toward the cam and is
decreased when moving away from the cam. Adjust the breaker point according
to the following procedures:
(1) Turn the flywheel until rubbing block rides on the high side of the cam thereby
giving the maximum gap opening.
(2) Insert gage strip of 0.020 inch thickness to check gap. If the gap is incorrect,
adjust as follows:
(3) Loosen the anchor screw A slightly.
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