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

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_345

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_347

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 2-19. TROUBLESHOOTING CHART (continued). u. AUXILIARY POWER UNIT (continued). (1) ENGINE CRANKS BUT FAILS TO START (continued). CONTINUED FROM D D. NOTE Plunger should pull up when switch is turned ON, and should move down when switch is turned OFF. Does fuel solenoid plunger function property? I 1 Notify Direct Support maintenance. E. 1. Place red probe of multimeter on lead 421 terminal at fuel solenoid and ground black probe. 2. With the aid of an assistant turn MASTER switch ON (refer to TM 9-2350-287-10). 3. Turn APU FUEL SHUT-OFF switch ON (refer to TM 9-2350-287-10). 4. Check for 24 ± 3 vdc. 5. Turn MASTER switch and FUEL SHUT- OFF switch OFF (refer to TM 9-2350-287- 10). Is voltage indicated? I I Notify Direct Support maintenance. F. 1. Disconnect harness 12329640 connector (larger connector) at APU wall mount. 2. Place red probe of multimeter on wall- mounted connector socket B and ground black probe. Continued on next page 2 - 2 94

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