ARMY TM 9-6115-642-24
AIR FORCE TO 35C2-3-455-12
MARINE CORPS TM 09247A/09248A-24/2
TABLE 2-6. UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3. Test for defective VOLTAGE adjust potentiometer, paragraph 2-48.2.
a. If VOLTAGE adjust potentiometer is not defective, do Step 4.
b. If defective, replace VOLTAGE adjust potentiometer, paragraph 2-48.
Step 4. Test for defective AC voltage regulator, paragraph 2-27.2.
a. If AC voltage regulator is not defective, do Step 5.
b. If defective, replace AC voltage regulator, paragraph 2-27.
Step 5. Test for defective voltage reconnection switch (S8), paragraph 2-64.3.
a. If voltage reconnection switch is not defective, do Step 6.
b. If defective, replace voltage reconnection switch, paragraph 2-54.
Step 6. Check AC Voltmeter circuit for breaks or loose connections, refer to Wiring Diagram F&2.
If breaks or loose connections are found, repair circuit.
22. GENERATOR SET FAILS TO GENERATE POWER.
Step 1. Test for defective ac circuit interrupter relay (K1), paragraph 2-61.3.
a. If AC circuit interrupter is not defective, do Step 2.
b. If defective, replace AC circuit interrupter, paragraph 2-61.
Step 2. Test for defective Field Flash relay (K15), paragraph 2-33.2.
a. If defective, replace Field Flash relay.
b. If Field flash relay is not defective and trouble persists, notify next higher level of maintenance,
23. AC VOLTMETER (VOLTS AC) INDICATES VOLTAGE, BUT FREQUENCY METER IS OFF SCALE.
Step 1. Check for defective frequency adjust control cable, paragraph 2-89.2.
a. If frequency adjust control cable is not defective, do Step 2.
b. If defective, replace or adjust frequency adjust control cable, paragraph 2-89.
Step 2. Test for defective FREQUENCY meter (HERTZ), paragraphs 2-44.2 or 2-44.3.
a. If FREQUENCY meter (HERTZ) is not defective, do Step 3.
b. If defective, replace FREQUENCY meter (HERTZ), paragraph 2-44.
Step 3. Test for defective frequency transducer, paragraphs 2–28.2 or 2–28.3.
a. If frequency transducer is not defective, do Step 4.
b. If defective, replace frequency transducer, paragraph 2-28.
Step 4. Check frequency meter circuit for breaks or loose connections, refer to Wiring Diagram F&2.
If breaks or loose connections are found, repair circuit,
2-23
