Service manual

STARTER MOTOR REPAIR
STARTER INSPECTION
Solenoid
Inspect the solenoid for continuity between terminals S and
M and between tenninals S and body. No continuity should
be found between S and M. Continuity should be found
between S and the body and M and the body.
CONTINUITY CHECK
Inspecting The Armature
1. Check the armature with a growler tester. Hit's short
circuited, replace the armature. Also check for insulation
between
the commutator and its shaft. If poorly
insulated, replace the armature.
ARMATURE
CHECK
2. Measure the commutator O.D. and the depth of undercut.
Repair or replace it
if the service limit is exceeded. Also
check the commutator outside surface for dirtiness and
roughness.
If rough, polish the commutator with fine
crocus cloth.
Commutator Outside Diameter
Standard 1.523 in (38.7 mm)
Limit -0.039 in (·1.0 mm)
COMMUTATOR D.O.
"-
Brush and Brush Holder Inspection
1. Check the brushes. If worn out beyond the service limit,
replace the brushes.
BRUSHES
Brush Height
Standard 17 mm (0.669 in)
Limit 6 mm (0.2363 in)
2. Check the brush spring tension. A weak or defective
spring will cause excessive brush wear; replace the
springs
if suspect.
BRUSH HOLDER
ASSEMBLY~ C>..l,;)"""'~'
3. Check for insulation between the positive brush holder
and holder base.
If poorly insulated, replace the holder
assembly. Also check the brush holders for proper staking.
Engines & Generators
40