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 TM 9- 2920- 232- 34&P / TO 38X14- 2- 32
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TROUBLESHOOTING INSTRUCTIONS - CONTINUED
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0005 00
TABLE 2- 1. TROUBLESHOOTING
MALFUNCTION
PROBABLE CAUSE(S)
CORRECTIVE ACTION
1. Starter fails to operate or turns
a. Starter frozen.
Disassemble starter and check for
slowly.
bind in bearings, bent armature shaft,
or loose pole shoe. Repair as neces-
sary.
b. Defective solenoid assembly
Check for operation of solenoid by
placing a jumper from BAT terminal
to S terminal. If the solenoid does not
operate, replace solenoid assembly.
c.
Worn brushes or defective
Remove commutator end plate and
springs.
inspect brushes. Check brush spring
tension. Install new brush kit if parts
are defective.
d. Worn or pitted commutator.
Remove armature and inspect
commutator. Resurface commutator
or replace armature if defective.
e. Eccentric commutator.
Remove armature and check
eccentricity. Resurface commutator
or replace armature.
f.
Shorted or grounded
Remove commutator end plate and
commutator.
check for evidence of excessive
arcing. If arcing is evident, remove
armature and check for grounds or
shorts. Replace armature, if
defective
g. Grounded field windings.
Inspect field windings. Replace
windings if defective.
2. Low speed and low current.
a. High internal resistance.
Remove commutator end plate and
tighten brush leads.
b. Poor brush contact.
Remove commutator end plate and
inspect brushes and commutator.
Install new brush kit or resurface
commutator.
3. Low speed and high current.
a. Faulty armature.
Remove commutator end plate and
inspect commutator for evidence of
excessive arcing. If indicated,
remove armature and check for
grounds or shorts. Replace armature,
if defective.
b. Armature drag.
Disassemble starter and inspect
bearings and armature. Repair as
required.
0005 00- 6
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