TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_346

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_348

TM-9-2350-287-20-1 Carrier Ammunition Tracked M992A21 (2350-01-352-3021) EIC:AE6 Manual
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TM 9-2350-287-20-1 I 2-19. TROUBLESHOOTING CHART (continued). u. AUXILIARY POWER UNIT (continued). (1) ENGINE CRANKS BUT FAILS TO START (continued). CONTINUED FROM F F. 3. With the aid of an assistant turn MASTER switch ON (refer to TM 9-2350-287-10). 4. Turn FUEL SHUT-OFF switch ON (refer to TM 9-2350-287-10). 5. Check for 24 ± 3 vdc. 6. Turn MASTER switch and FUEL SHUT- OFF switch OFF (refer to TM 9-2350-287- 10). Is voltage indicated? I Repair lead 421 or replace harness 12329640 (para 18-21). Verify problem is solved. G. 1. Reconnect harness 12329640 connector to APU wall. 2. Remove APU control box (para 7-22). 3. Disconnect wire harness 12330248 plug from APU control box. 4. Place red probe of multirneter in pin N of plug and ground black probe. 5. With the aid of an assistant turn MASTER switch ON (refer to TM 9-2350-287-10). 6. Check for 24 ± 3 vdc. 7. Turn MASTER switch OFF (refer to TM 9- 2350-287-10). Is voltage indicated? Continued on next page 2-295

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