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 injection
pump.
4. Hold open quick disconnect valve on injec-
tion pump.
5. With the aid of an assistant turn MASTER
switch 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 FUEL
SHUT-OFF switch OFF (refer to TM 9-2350-
287-10).
END OF TASK
2-313
TM 9-25350-287-20-1
