5-12
4. Use a continuity tester to make certain no continuity
exists between the commutator copper and the iron
of the armature. Rotate the armature and check out
all of the commutator bars. (Illust. 5-19)
5. The armature should be checked for glazing or wear.
If necessary the armature can be turned down in a
lathe. While rotating, polish the commutator bars
using a piece of 00 sandpaper. (Illust. 5-20) Light
pressure and back and forth movement should be
used. Re-cut the commutator bars to a depth equal
to the width of the insulators between the bars.
5-19
5-20
BRUSH HOLDER
Install finishing nails into a block of wood according to
the following diagram. (Illust. 5-21)
BRUSH REPLACEMENT
1. Remove the thru bolts holding the end cap in place.
2. Remove the end cap and thrust washer from the
starter housing.
3. Note or mark the position of the brushes.
4. Remove the holding nut from the starter terminal post
and remove the post and two brush leads.
5. Remove the remaining two brushes by sliding the
retaining clips off the metal end cap.
6. Install the new brushes and springs onto the end cap.
7. Spread back the brushes and using the brush holder
tool. Install the brush holder from the bottom up
through the end cap.
8. Install the thrust washer on the end of the armature
shaft.
9. Install the starter end cap. Secure with the thru bolts
and remove the brush holder. Rotate the armature
by hand to check for binding before installation on
the engine.
5-21
.875
.875
1.25
.875
.875
To Next Page
Loading...
