Table 3-4. Troubleshooting (Cont'd)
Test or Inspection
2. GENERATOR FAILS TO SUPPLY POWER TO LOAD
Check for low generator field by depressing and then releasing the field flash switch, figure 2-5.
If the cause indicates that the generator field is not built up, depressing the switch could resolve the
malfunction. Depressing the switch will flash the generator field momentarily with battery current.
If this does not resolve the problem, go to Step 2.
Check for a load cable that is burned, has broken strands, or has insulation worn away. Location will depend upon
the external source it is connected to.
If cable is burned, broken, or has no insulation, report the deficiency to organizational
3. VOLTMETER FAILS TO SHOW VOLTAGE
Check for a broken dial and bent indicator. Refer to figure 2-3 for location of the voltmeter.
If the voltmeter has broken dial and bent indicator, refer to organizational maintenance for replace-
ment. The operator, not knowing if the voltmeter is the cause of the malfunction, should go on to
Step 2 and isolate another or the only cause of the malfunction.
If voltmeter is not visually damaged, check for an out-of-adjustment voltage adjusting rheostat which could indi-
cate low or no voltage on the meter.
To correct the above, turn the knob on the rheostat (fig. 2-3) until the proper voltage is attained, as
indicated by the voltmeter. If voltage does not build up go on to Step 3.
If the generator does not build up, check the field flash switch (fig. 2-5).
Momentarily depress the field flash switch. The action could correct the malfunction by flashing
the generator field momentarily with battery current. If malfunction is still not corrected, the prob-
lem should be reported to organizational maintenance.
4. GENERATOR FAILS TO BUILD UP RATED VOLTAGE
Check the generator field build up by depressing the field flash switch (fig. 2-5).
This action could correct the problem by flashing the generator field with battery current. If de-
pressing switch doesnt correct the problem, report to organizational maintenance.
5. VOLTMETER READING TOO HIGH OR TOO LOW
Check the voltage adjusting rheostat by visually examining position of knob. Refer to figure 2-3. The rheostat is
located just to the right of the center of the control panel.
If the rheostat appears to be in the wrong position, turn it one way first, then turn it the other way.
The voltage should increase when the control is turned clockwise. If this does not correct the volt-
meter reading, go on to Step 2.
Refer to figure 2-3 and observe the position of the voltage selector switch. The voltage selector switch is located
slightly to the right of center in the upper part of the control panel.
To correct the problem, move the switch to each position until the voltmeter reading is corrected.