TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).u. AUXILIARY POWER UNIT (continued).(1) ENGINE CRANKS BUT FAILS TO START(continued).CONTINUED FROM MRepair lead 421 or replace harness12330248 (para 7-71). Verify problem issolved.1N. 1. Move left projectile racks to rear of vehicle.(refer to TM 9-2350-287-10).2. Disconnect power leads (circuit 76) fromAPU fuel pumps.3. Place red lead of multimeter into socket ofpower lead of first pump.4. With the aid of an assistant turn MASTERswitch ON (refer to TM 9-2350-287-10).5. Turn FUEL SHUT-OFF switch ON (refer toTM 9-2350-287-10).6. Check for 24 ± 3 vdc.7. Repeat procedures 4 through 7 for secondpower lead.8. Turn Master switch OFF (refer to TM 9-2350-287-10).Is voltage indicated in both power leads?IRepair lead 76 or replace harness12330248 (para 7-71). Verify problem issolved.Continued on next page2-300
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