2-19. TROUBLESHOOTING CHART (continued).u. AUXILIARY POWER UNIT (continued).(4) ENGINE STARTS, BUT FAILS TO KEEP RUN-NING OR MISFIRES (continued).C. 1. Close APU fuel fitter drain cocks.2. Disconnect fuel return line at APU injec-tion pump quick disconnect.3. Place a drain pan under the APU injectionpump.4. Hold open quick disconnect valve on injec-tion pump.5. With the aid of an assistant turn MASTERswitch and APU FUEL SHUT-OFF switch ON(refer to TM 9-2350-287-10).6. Observe injection pump for fuel flow.7. Turn MASTER switch and APU FUELSHUT-OFF switch OFF (refer to TM 9-2350-287-10).END OF TASK2-313TM 9-25350-287-20-1
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