TM 55-1510-221-MTF
TROUBLESHOOTING GUIDE C - ELECTRICAL
CONDITION
PROBABLE CAUSE
C1. 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.
C2. 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.
Paralleling circuit open.
h.
Defective generator control unit.
l.
High resistance field circuit.
j.
Shorted field.
C3. Low generator output.
a.
Generators not paralleled.
b.
Defective generator control unit
C4. Low voltage.
a.
Malfunctioning generator control unit.
3-6
