TM 55-1510-222-MTF
TROUBLESHOOTING GUIDE C - ELECTRICAL
CONDITION
C1.
C2.
C3.
PROBABLE CAUSE
Zero or low voltage indicated.
a. Circuit breaker tripped.
b. Loose connection.
c. Open or shorted field circuit in generator or
defective armature.
d. Brushes not contacting commutator.
e. Brushes worn out.
f. Dirty commutator.
g. Defective generator control unit.
h. Starter switch on.
No generator output.
a. Improper connections.
b. Circuit breaker tripped.
c. Open or short circuit.
d. Loss of residual magnetism.
e. Defective generator control switch.
f. Starter switch on.
g. Generator control unit over-voltage circuit
defective.
h. Paralleling circuit open.
i. Defective generator control unit.
j. High resistance field circuit.
k. Shorted field.
Low generator output.
a. Generators not paralleled.
b. Defective generator control unit.
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