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 6-8 5 DEFECTIVE VENT FAN MOTOR 5.2.6 REPLACE VENT FAN MOTOR RESTART HEATER 6 DEFECTIVE WIRING HARNESS 5.5.6 CHECK THREE WIRES; P1-PIN 5 TO P11-PIN8; P1-PIN11 TO P11-PIN 15; P1-PIN14 TO P11-PIN 7 IF ANY FAIL THE CONTINUITY CHECK REPLACE WIRING HARNESS RESTART HEATER 7 DEFECTIVE POWER BOARD REPLACE POWER BOARD RESTART HEATER 8 DEFECTIVE LOGIC BOARD REPLACE LOGIC BOARD RESTART HEATER 6.5.7 C4 - BURNER FAN FAULT (Design Iteration 1 & 2 Only) BURNER FAN SPEED IS BELOW NORMAL LIMITS CHECK/POSSIBLE CAUSE REF. REPAIR 1 WITH HEATER IN PURGE MODE, CHECK AIRFLOW AT EXHAUST PORT, OR SUCTION AT AIR INLET.BE CAREFUL NEAR THE EXHAUST SYSTEM. EXHAUST GASES ARE HOT. IF AIR IS NOT CIRCULATING THROUGH THE HEATER, CHECK ALL ELECTRICAL CONNECTIONS FROM THE BURNER FAN MOTOR TO THE BURNER FAN DRIVER. ALSO CHECK ALL ELECTRICAL CONNECTIONS ON BOTH WIRING HARNESSES RESTART HEATER 2 DEFECTIVE BURNER FAN PLATE 5.5.4 REPLACE BURNER FAN PLATE RESTART HEATER 3 DEFECTIVE WIRING HARNESS 5.5.6 REPLACE WIRING HARNESS RESTART HEATER 4 DEFECTIVE ELECTRONIC PROGRAMMED CONTROLLER 5.2.5 REPLACE ELECTRONIC PROGRAMMED CONTROLLER RESTART HEATER 5 DEFECTIVE BURNER FAN MOTOR 5.6.6 REPLACE BURNER FAN MOTOR RESTART HEATER 6 DEFECTIVE BURNER FAN DRIVER BOARD 5.6.4 REPLACE BURNER FAN DRIVER BOARD RESTART HEATER 6.5.8 C4 – BURNER FAN FAULT (Design Iteration 3 Only) BURNER FAN SPEED IS BELOW NORMAL LIMITS; BURNER POWER DRIVER STATUS CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK BURNER FAN MOTOR CONNECTIONS TO THE POWER BOARD RECONNECT THE BURNER FAN MOTOR TO THE POWER BOARD RESTART HEATER