AUXILIARY POWER UNIT FAILS TO KEEP RUNNING (cont)

AUXILIARY POWER UNIT FAILS TO KEEP RUNNING - TM-9-2350-292-20-1_148

AUXILIARY POWER UNIT ENGINE HARD TO START IN COLD WEATHER.

TM-9-2350-292-20-1 Carrier Ammunition Tracked M992A1(NSN 2360-01-362-3021) EIC:AE6 Manual
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TM 9--2350--292--20--1 AUXILIARY POWER UNIT FAILS TO KEEP RUNNING -- CONTINUED 0019 00 CONTINUED FROM STEP I J Is 24 V dc present? no yes 1. Reinstall quick--disconnect connector to fuel line. 2. Reconnect fuel line at quick--disconnect between hull mounted double bank fuel filters and lower fuel pump. 3. Disconnect harness 3W730 lead 76A from lower fuel pump. 4. Place multimeter red lead to harness 3W730 lead 76A and black lead to ground. 5. Turn MASTER switch ON (TM 9--2350--292--10). 6. Turn FUEL SHUTOFF switch ON (TM 9--2350--292--10). 7. Check for voltage. 8. Turn FUEL SHUTOFF and MASTER switches OFF. Replace lower fuel pump (WP 0615 00). Verify fault is corrected. Is continuity present? 1. Disconnect harness 3W730 P1 from relay box J1 connector. 2. Place multimeter red lead onto harness 3W730 lead 76A and black lead to harness 3W730 P1 socket 4. 3. Check for continuity. K no yes Repair (WP 0290 00) or replace (WP 0654 00) harness 3W730. Verify fault is corrected. Replace relay box (WP 0662 00). Verify fault is corrected. END OF TASK 0019 00--5/6 blank

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