TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
Page 400 of 858
TM 9-2350-277-20-1 FRONT AND/OR REAR BILGE PUMP(S) AND/OR LIGHTS DON’T WORK—Continued 0080 00 B4Y 1. Check continuity between plug 450 A (1) to 450 A lead end at bus bar (2) for rear pump; or plug 450 C (3) to 450 C lead end at bus bar (4) for front pump. 2. Is there continuity? YES NO B4YN 1. Replace lead 10861710 (front), (WP 0270 00), or replace lead 10861711 (rear), (WP 0270 00). 2. Install bilge pump leads. 3. Verify no faults found. B5Y 1. Remove instrument panel for access (WP 0295 00). 2. Remove plug 450 B (1) and plug 452 B (2) (front) or plug 450 (3) and 451 A (4) (rear) from bilge pump switch (5). 3. Check continuity between bilge pump switch jacks with BILGE PUMPS switch on. 4. Is there continuity? YES NO B5YN 1. Install master switch panel (WP 0260 00). 2. Replace bilge pump switch (WP 0281 00). 3. Verify no faults found. B6Y 1. Repair harness 12268797 circuit 450 or 450B (WP 0382 00). 2. Verify no faults found. 0080 00-4