b. Inspect each of four brush holders (25).
6. INSPECT BUSHINGS (26) and (33) FOR WEAR.
Discoloration, burns or signals of high
temperatures indicates defective or improperly
a. Measure inside diameter of each bushing (26)
2. TEST BRUSH HOLDER (25) INSULATION.
b. Remove bushings (26) and (33) if measurement
is greater than .753 inch.
a. Connect multimeter test leads to two brush
holders that share a common mounting post.
7. INSPECT ENGINE DRIVE (34) FOR DAMAGE.
b. A LOW resistance reading indicates that an
a. Rotate engine drive (34) in both directions. If
insulator bushing (24) or washer (23) is defective
drive does not move freely (in and out) replace
and must be replaced. Repeat this test at each
of four pounting posts.
b. Inspect engine drive (34) splines for damage and
3. TEST BRUSH HOLDER (25) GROUND.
wear. Replace drive if worn or damaged.
a. Connect one multimeter test lead to a bare metal
8. INSPECT ARMATURE (30) FOR DAMAGE.
surface on housing (9) and second test lead to
each of four brush holders (25).
a. Inspect armature (30) shaft splines for damage
holder caused by defective insulator(s).
b. Replace engine starter if armature is worn or
4. INSPECT INSULATOR
9. PERFORM ARMATURE (30) GROUND TEST.
a. Inspect each insulator bushing (24) for breaks,
a. Connect one multimeter test lead to armature
cracks or burns.
(30) shaft (on spline end) and run second test
lead across all commutator contacts.
b. Remove damaged insulator bushings (24).
5. TEST JUMPER AND SCREW ASSEMBLY (12).
starter must be replaced.
10. PERFORM ARMATURE GROWLER TEST.
surface on housing and jumper and screw
a. If armature (30) is grounded, replace entire
bushing(s) or washer(s).
11. INSPECT COMMUTATOR END OF ARMATURE
(30) FOR DAMAGE.
a. Inspect commutator end for pits, scoring,
excessive carbon and oil.