TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P 6-27 THE HEATER WAS UNABLE TO ESTABLISH IGNITION IN THE 3½ MINUTE TIME LIMIT CHECK/POSSIBLE CAUSE REF. REPAIR 13 CHECK CONDITION OF FLAME TUBE AND BURNER CHAMBER 5.3.2 5.3.5 REPLACE FLAME TUBE AND BURNER CHAMBER RESTART HEATER 14 WICK IS DEGRADED 5.3.6 REPLACE BURNER CARTRIDGE 15 CHECK FOR LOOSE CONNECTIONS BETWEEN THE VENT FAN BOARD AND THE LOGIC BOARD RECONNECT THE P11 PLUG INTO THE VENT FAN BOARD AND THE P1 PLUG INTO THE LOGIC BOARD RESTART HEATER 16 CHECK WIRE HARNESS FOR CONTINUITY AND SHORTS CHECK 2 WIRES FROM THE VENT FAN BOARD TO THE LOGIC BOARD FOR CONTINUITY AND SHORT TO GROUND: P11-PIN12 TO P1-PIN3 P11-PIN4 TO P1-PIN12 CHECK FOR MV SIGNAL BETWEEN P11-PIN13 AND P11-PIN5 FOR BT SENSOR P11-PIN14 AND P11-PI N 6 FOR XT SENSOR CHECK FOR OPEN LINE BETWEEN P11-PIN13 TO CHASIS GROUND AND P11-PIN14 TO CHASIS GROUND IF ANY CHECK FAILS REPLACE WIRE HARNESS RESTART HEATER