Table 4-2. Troubleshooting.

ARMY TM 5-6115-633-14&P

4-14.

Power Plant Troubleshooting. Table 4-2 contains troubleshooting information for locating and

correcting operating troubles which may develop in components unique to the power pIant end item.

Each malfunction is followed by a list of tests or inspections which will help determine probable cause

and corrective actions to take. Perform the tests/inspections and corrective actions in the order

listed. This manual cannot list all malfunctions that may occur, nor all tests or inspections and

corrective actions. If a malfunction is not listed or cannot be corrected by listed corrective actions,

notify your supervisor.

Table 4-2. Troubleshooting.

Malfunction

Test or inspection

Corrective action

1. POWER IS ABSENT AT SWITCH BOX LOAD TERMINAL(S) WHEN ONE GENERATOR SET IS

OPERATING.

Check that generator set circuit breaker is set to ON position.

Step 1.

If circuit breaker is in OFF position, set to ON position.

Check for power output at generator set load terminals.

Step 2.

If power is absent at generator set load terminals, troubleshoot

generator set. (Refer to TM 5-6115-585-12).

Inspect power cable connections inside switch box for looseness or broken wire

Step 3.

terminals.

Tighten loose connections. If any wire terminals are broken, replace

cable (paragraph 4-25, d.) or refer to higher level of maintenance for

repair.

Perform continuity check on associated generator set power cable

Step 4.

If cable is defective, replace cable (paragraph 4-25, d.) or refer to

higher level of maintenance for repair.

Perform continuity check on rotary switch (paragraph 4-23, c.).

Step 5.

If switch is defective, notify higher level of maintenance.

2. POWER IS ABSENT AT ONE OR MORE SWITCH BOX LOAD TERMINALS WHEN EITHER GENERATOR

SET IS OPERATING.

Check wire associated with non-functioning load terminal(s) for looseness or

Step 1.

broken terminals inside switch box.

Tighten loose connection(s). If any terminals are broken, replace wire

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