TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 FUEL LEVEL INDICATOR MALFUNCTIONS—Continued 0049 00 3Y 1. Install circuit 30 and 31 plugs on FUEL TANK switch. 2. Remove circuit 28 plug (1) from FUEL LEVEL indicator jack (2). 3. Check continuity between circuit 28 plugs (1) and (3). 4. Does multimeter read 0 ohms? YES NO 3YN 1. Replace lead 12268805 (WP 0281 00). 2. Verify no faults found. 4Y 1. Install circuit 28 plug on FUEL TANK switch jack. 2. Replace FUEL LEVEL indicator (WP 0285 00). 3. Verify no faults found. BY 1. Remove harness 12268797 circuit 30 (left tank) plug (1) or circuit 31 (right tank) plug from failing fuel tank jack (2). 2. Turn FUEL TANK switch to failing side. 3. Does indicator read full scale? YES NO BYN 1. Do steps Step 2 and Step 3 for all carriers except M577A3 and M1068A3. Do steps Step 4 and Step 5 for M577A3 and M1068A3. 2. Replace harness 12268797 circuit 30 or 31 (WP 0290 00). 3. Verify no faults found. 4. Faulty circuit 29 or 30. Beyond unit maintenance repair. 5. Notify supervisor. 0049 00-3