Figure 4-47. Filing Contact Points

Figure 4-47. Filing Contact Points

crater will form in the negative contact. See figure

4-46.

Figure 4-48. Breaker Point Alignment

e. For a temporary repair, dress the contact

c. After the breaker points have been properly

points with a few even strokes using a clean

aligned, adjust the breaker point gap or dwell.

fine-cut contact file. Do not attempt to remove all

roughness or dress the point surfaces down

4-48. POINT GAP ADJUSTMENT. A scope, a

smooth. See figure 4-47.

dwell meter, or a feeler gauge can be used to check

the gap of new breaker points. A scope or a dwell

meter can be used to check the gap of used breaker

points. Due to the roughness of used points, it is

not advisable to use a feeler gauge to check the

Never use emery cloth or sandpaper to

clean points as particles will be imbedded

gap*

in the points and cause arcing and rapid

a. Remove distributor cap and check and correct

burning.

point alignment, if necessary.

4-47. BREAKER POINT ALIGNMENT. The

b. Rotate the distributor until the rubbing block

b r e a k e r points must be accurately aligned and

rests on the peak of a cam lobe.

strike squarely in order to realize the full

a d v a n t a g e s provided by this design and assure

normal breaker point life. Any misalignment of the

c. If the distributor is in the engine, place the

breaker point surfaces will cause premature wear,

rubbing block on the peak of the cam by

overheating and pitting.

proceeding as follows:

a. Turn the cam so that the breaker points are

d. With the ignition switch off, crank the engine

closed and check the alignment of the points.

by using an auxiliary starter switch between the S

Contact area should be centered. See figure 4-48.

and battery terminals of the starter relay.

b . Align the breaker points to make full face

e. Insert the correct blade of a clean feeler gauge

contact by bending the stationary breaker point

between the breaker points. ( F o r p o i n t s o p e n i n g

bracket. Do not bend the breaker arm.

S p e c . Refer

Table

page

l-3).

4-36