TM 9-6115-659-13&P
Section II. TROUBLESHOOTING
5-4
GENERAL.
Paragraph 5-4.3 covers troubleshooting procedures for components unique to the power plant/power unit. Refer to the
applicable generator set or trailer technical manual, as listed below, for generator and trailer troubleshooting procedures.
5-4.1
Generator Set Troubleshooting. Refer to TM 9-6115-641-24 and TM 9-2815-252-24.
5-4.2
Trailer Troubleshooting. Refer to TM 9-2330-202-14&P for Power Plant AN/MJQ-35 and Power Unit PU-797,
TM 9-2330-213-14&P for Power Plant AN/MJQ-36, and TM 9-2330-392-14&P for Power Plant AN/MJQ-35A and Power
Unit PU-797A.
5-4.3
Power Plant Troubleshooting. The following symptom index contains troubleshooting information for locating
and correcting operating troubles that may develop in components unique to the power plant end item. The symptom
index lists malfunctions associated with switch box operation. Each malfunction listing includes a reference to the
applicable figure that contains a chart. The chart will help you determine probable causes and corrective actions to take.
The symptom index 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 next higher level of maintenance.
NOTE
PRIOR TO THE USE OF ANY OF THE FOLLOWING PROCEDURES, BE SURE THE
SWITCH BOX IS PROPERLY WIRED TO THE GENERATORS LOAD TERMINALS.
FAILURE TO DO SO WILL GIVE MISLEADING RESULTS.
SYMPTOM INDEX
Troubleshooting
Procedure
(Figure)
ON INDICATOR LAMP ASSEMBLY TESTS GOOD, BUT ON INDICATOR LAMP
FAILS TO LIGHT WITH GENERATOR SET RUNNING .............................................
5-1
ON-LINE INDICATOR LAMP ASSEMBLY AND ON/OFF SWITCH SERVICEABLE,
BUT ON-LINE INDICATOR LAMP FAILS TO LIGHT WHEN ON/OFF SWITCH
IS PLACED IN ON POSITION.....................................................................................
5-2
SYNCHRONIZING INDICATOR LAMP ASSEMBLY AND TRANSFER SWITCH
SERVICEABLE, BUT SYNCHRONIZING INDICATOR LAMPS FAIL TO LIGHT
WHEN TRANSFER SWITCH IS CLOSED AND THEN RELEASED ..........................
5-3
ALL INDICATOR LAMPS WORKING PROPERI/ BUT LOAD WILL
NOT TRANSFER.........................................................................................................
5-4
Change 3 5-3
