T.O. 35C2-3-442-2
P-9-TM-457-35
TM-07464A-35
TM 5-6115-457-34
Table 2-3. Troubleshooting (Continued)
PROBABLE CAUSE
CORRECTIVE ACTION
MALFUNCTION
GENERATOR SET (Continued)
a. Defective or improper-
a. Repair or adjust switch
25. Generator set shuts
(paragraph 8-46 or 8-51).
ly adjusted over speed
down, overspeed
switch.
indicator illuminates
but engine was oper-
ating at normal speed.
a. Test relay
26. Load contactor or
a. Defective overload
relay K14.
motor operated cir-
cuit breaker opens
b. Test and replace if defec-
b. Defective current
and overload indica-
tive (paragraph 6-154).
transformer CT1, CT2,
tor illuminates with
or CT3.
no overload fault.
27. Overload fault condi-
a . Test relay
a, Defective overload
tion exists but load
relay K14.
contactor does not
b. Defective thermal watt
b. Test and replace if defec-
open.
converter.
tive (paragraph 6-3).
c. Defective current
c. Test and replace if defec-
transformer CT1, CT2,
tive (paragraph 6-154).
or CT3.
28. Short circuit fault
a. Defective short circuit
a . Test relay
condition exists but
relay K13.
load contactor does
not open.
b. Defective current
b. Test and replace if defec-
tive (paragraph 6-154).
transformers CT1, CT2,
or CT3.
c. Defective thermal watt
c. Test and replace if defec-
converter.
tive (paragraph 6-3).
d. Defective current
d. Test and replace if defec-
transformers CT4, CT5,
tive (paragraph 6-154).
or CT6.
e. Defective exciter
e. Test exciter regulator
regulator.
Change 3
2-41
