APU CONTROL BOX LOW OIL PRESS INDICATOR DOES NOT LIGHT WHEN APU OIL PRESSURE IS LOW (cont)

APU CONTROL BOX LOW OIL PRESS INDICATOR DOES NOT LIGHT WHEN APU OIL PRESSURE IS LOW - TM-9-2350-292-20-1_116

APU CONTROL BOX ENGINE OIL PRESSURE GAUGE READS ZERO WITH APU ENGINE RUNNING - TM-9-2350-292-20-1_118

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 APU CONTROL BOX LOW OIL PRESS INDICATOR DOES NOT LIGHT WHEN APU OIL PRESSURE IS LOW -- CONTINUED 0015 00 F Is continuity present? CONTINUED FROM STEP E no yes 1. Reconnect harness 4W700 connector P2 at bulkhead disconnect. 2. Remove APU control box from the vehicle (WP 0247 00). 3. Turn FUEL SHUT OFF switch ON (TM 9--2350--292--10). 4. Place one multimeter lead on control box receptacle pin N and the other multimeter lead on pin F. Check for continuity. G Is continuity present? no yes 1. Remove APU control box rear panel (WP 0247 00). 2. Disconnect lead 421 from switch S3. 3. Remove connector from indicator L2. 4. Place one multimeter lead on lead 421 connector socket and the other multimeter lead on indicator L2 lead 27 connector socket. Check for continuity. Repair (WP 0290 00) or replace (WP 0247 00) harness 4W725. Verify fault is corrected. Go to STEP D of trouble- shooting procedures for AUXILIARY POWER UNIT FUEL SOLENOID FAILS TO ENERGIZE (WP 0012 00). Replace LOW OIL PRESS indicator socket assembly (WP 0247 00). Verify fault is corrected. END OF TASK 0015 00--5/6 blank

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