APU STARTING IN EXTREMELY COLD WEATHER- Continued

APU STARTING IN EXTREMELY COLD WEATHER- Continued - TM-9-2350-267-10_260

APU STARTING IN EXTREMELY COLD WEATHER- Continued - TM-9-2350-267-10_262

TM-9-2350-267-10 Carrier Personnel Full Tracked Armored M113A2 2350-01-068-4077 Carrier Command Post Light Tracked M577A2 2350-01-068-4089 Manual
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APU STARTING IN EXTREMELY COLD WEATHER - Continued TM 9-2350-267-10 14. Open side APU door and open AFW plenum door (13) CAUTION To avoid damaging radio components, turn off all electrical and radio switches before starting 15. 16. 17, 18. 19. Turn all electrical and radio switches off (except MASTER switch and personnel heater switches). Make sure APU GENerator switch (14) is OFF. Turn FUEL SHUT OFF switch (15) ON. The LOW OIL PRESSure lamp (16) will light until APU engine starts. Turn PREHEAT switch (17) to MOMentary ON. Hold switch ON for 2 min- utes. CAUTION TO avoid excessive demand on batteries, do not crank engine longer than 1 minute at a time. Do not attempt to start APU for longer than 5 minutes total. if APU doesn’t start in 5 minutes, notify Organizational Main- tenance. While holding PREHEAT switch (17) ON, position and hold START switch (18) to MOMentary ON. Hoid both switches ON until APU engine starts or until 30 seconds have passed. NOTE If APU engine does not start within 30 seconds, release START switch (18), but continue to hold PREHEAT switch ON for an- other minute. After allotted time, turn START switch ON again. if engine still does not start, turn FUEL SHUTOFF switch OFF and allow APU to heat for an additional 15 to 30 minutes and repeat steps 14 through 17. Troubleshoot APU if engine has not started after this action. 2-227

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