TM 9--2350--292--20--1 0019 00--1 AUXILIARY POWER UNIT FAILS TO KEEP RUNNING. 0019 00 THIS WORK PACKAGE COVERS: Deploying Tow Bar, Connecting Tow Bar, Disconnect Tow Bar, Stowing Tow Bar INITIAL SETUP: Tools and Special Tools General mechanic’s tool kit (item 1, WP 0717 00) Multimeter (item 84, WP 0717 00) Personnel Required Two Equipment Conditions APU removed and Ground Hop Kit (HATZ) installed (WP 0589 00) Vehicle fuel manual shutoff valve open (TM 9--2350--292--10) WARNING Do fuel lines have damage and/or leaks? Inspect fuel lines for fuel line damage and leaks (WP 0617 00). no yes Does fuel flow? A B Tighten leaking fuel line connectors, repair and replace fuel lines (WP 0617 00). Verify fault is corrected. CONTINUED ON NEXT PAGE 1.   Remove front engine deck grilles (TM 9--2350--292--10). 2.   Disconnect fuel return line quick--disconnect hose going to forward fuel tank (WP 0587 00). 3.   Remove quick--disconnect connector from fuel return line (WP 0587 00). 4.   Place fuel hose into catch bucket. 5.   Turn MASTER switch ON (TM 9--2350--292--10). 6.   Turn FUEL SHUTOFF switch ON (TM 9--2350--292--10). 7.   Watch for fuel. 8.   Turn FUEL SHUTOFF and MASTER switches OFF. 9.   Reinstall quick--disconnect connector to fuel return line (WP 0587 00). 10. Reconnect fuel return line onto forward fuel tank quick--disconnect line connector (WP 0587 00). FORWARD WARNING Remove rings, bracelets, wristwatches, and neck chains before working on any vehicle. Jewelry can catch on equipment and cause injury, or may short across an electrical circuit and cause severe burns or electrical shock.