AUXILIARY POWER UNIT FAILS TO CRANK - TM-9-2350-292-20-1

AUXILIARY POWER UNIT OVERVIEW AND DIAGRAMS (HATZ) (cont)

AUXILIARY POWER UNIT FAILS TO CRANK - TM-9-2350-292-20-1_128

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 0018 00--1 AUXILIARY POWER UNIT FAILS TO CRANK. 0018 00 THIS WORK PACKAGE COVERS: Auxiliary Power Unit Fails To Crank INITIAL SETUP: Tools and Special Tools General mechanic’s tool kit (item 1, WP 0717 00) Multimeter (item 84, WP 0717 00) Materials Adhesive (item 25, WP 0716 00) Equipment Conditions Vehicle MASTER switch OFF (TM 9--2350--292--10) APU cover removed (WP 0413 00) System selector valve in MAIN (TM 9--2350--292--10) Personnel Required Two WARNING Remove rings, bracelets, wristwatches, and neck chains before working on any vehicle. Jewelry can catch on equip- ment and cause injury, or may short across an electrical circuit and cause severe burns or electrical shock. Are all connections tight? Check APU for loose electrical connections. no yes Clean and tighten loose connections. Verify fault is corrected. Does preheater click? 1. Turn MASTER switch ON (TM 9--2350--292--10). 2. Turn PREHEAT switch ON and OFF and listen for the preheater relay to click. 3. Turn MASTER switch OFF. no yes Go to step E. A B CONTINUED ON NEXT PAGE

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