TM 9--2350--292--20--10011 00--1AUXILIARY POWER UNIT ENGINE HARD TO START IN COLD WEATHER0011 00THIS WORK PACKAGE COVERS:Auxiliary Power Hard To Start in Cold WeatherINITIAL SETUP:Tools and Special ToolsGeneral mechanic’s tool kit (item 1, WP 0717 00 )Multimeter (item 84, WP 0717 00)Equipment ConditionsVehicle MASTER switch OFF (TM 9--2350--292--10)APU cover removed (WP 0413 00)Personnel RequiredTwoIs continuity present at all tests?1. Disconnect circuit R leads from preheater relay,all glow plugs and preheaters.2. Place one multimeter lead on lead R leadconnector and other lead on all glow plug andpreheater leads (one at a time). Check forcontinuity.noyesIs 4.75 + 1.5 ohms indicated at all tests?1. Reconnect lead R lead to preheater relay.2. Place one multimeter lead on glow plugs (oneat a time) and other lead to ground. Checkfor resistance.Repair (WP 0290 00) or re-place (WP 0657 00) lead Rlead(s) to respective glowplug and/or preheater.Verify fault is corrected.noyesNotify Direct SupportMaintenance.ABWARNINGRemove rings, bracelets, wristwatches,and neck chains before working on anyvehicle. Jewelry can catch on equip-ment and cause injury, or may shortacross an electrical circuit and causesevere burns or electrical shock.CONTINUED ON NEXT PAGE
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