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 MASTER SWITCH ON INDICATOR DOESN’T LIGHT—Continued 0048 00 B2Y 1. Remove master switch panel (WP 0260 00) or (WP 0261 00). 2. Turn MASTER SWITCH to ON. 3. Measure resistance between master switch terminals (1) and (2). 4. Does multimeter read 0 ohms? YES NO B2YN 1. Replace master switch (WP 0262 00). 2. Verify no faults found. B3Y 1. Replace harness 10933038 (WP 0266 00). 2. Verify no faults found. 0048 00-4