AUXILIARY POWER UNIT FAILS TO KEEP RUNNING

AUXILIARY POWER UNIT FAILS TO KEEP RUNNING (cont) - TM-9-2350-292-20-1_146

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

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 0019 00--3 AUXILIARY POWER UNIT FAILS TO KEEP RUNNING -- CONTINUED 0019 00 F Is 24 V dc present? CONTINUED FROM STEP E no yes CONTINUED ON NEXT PAGE G no yes 1. Disconnect harness 3W730 lead 76B from upper fuel pump. 2. Place multimeter red lead on harness 3W730 lead 76B and black lead to ground. 3. Turn MASTER switch ON (TM 9--2350--292--10). 4. Turn FUEL SHUTOFF switch ON (TM 9--2350--292--10). 5. Check for voltage. 6. Turn FUEL SHUTOFF and MASTER switches OFF. 7. Reconnect harness 3W730 lead 76B to upper fuel pump. Replace upper fuel pump (WP 0615 00). Verify fault is corrected. 1. Disconnect harness 3W730 connector P1 from APU relay box connector J1. 2. Place one multimeter lead on harness 3W730 P1 socket 5 and other lead on harness 3W730 lead 76B. Check for continuity. Is continuity present? 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.

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