P-9-TM-457-35
T.O. 35C2-3-442-2
TM 5-6115-457-34
TM-07464A-35
Table 2-3. Troubleshooting (Continued)
PROBABLE CAUSE
CORRECTIVE ACTION
MALFUNCTION
GENERATOR SET (Continued)
a. Intermittent or high
a. Clean, retighten, or re-
56. Alternator charging
rate low or unsteady.
resistance in charging
place defective parts.
or ground return cir-
cuits or battery connec-
tions.
b. Defective regulator.
b. Replace if defective
c. Alternator rectifier
c. Replace diodes
diodes shorted or open.
d. Replace rotor
d. Alternator rotor (field
coil) turns grounded or
shorted.
e. Tighten connections.
Loose connections on
e.
alternator and/or
regulator.
f. Defective brushes.
f. Replace brushes
57. Noisy alternator.
a. Misaligned belt or
a. Align drive pulley and
pulley.
alternator pulley and
belts.
b. Loose pulley.
b. Tighten pulley nut, if key-
way is worn, replace
pulley (paragraph 8-16).
c. Worn bearings.
c. Replace bearings
d. Shorted rectifier
d. Replace diode assembly
diodes.
2-51
