TM 9-2350-247-20-1ENGINE CRANKS BUT WILL NOT START BELOW 40F (AIR BOX HEATER ISUSED)—Continued0015 002Y1. Release air box heater switch.2. Turn MASTER SWITCH OFF.3. Install air box igniter.4. Install air box heater harness plug wire on igniter coil.5. Remove solenoid to air box heater tube assembly (1).6. Turn MASTER SWITCH ON.7. (H) Turn air box heater switch ON with engine cranking. Do notallow engine to start.8. Does fuel fail to flow from solenoid with air box heater switchON?YESNO2YN1. Air box heater is working properly.Go to engine cranks, but will notstart (WP 0014 00).2. Verify no faults found.3Y1. Release air box heater switch.2. Turn MASTER SWITCH OFF.3. Remove fuel supply line to solenoid (1) at return tee (2).4. Crank engine for 3-5 seconds.5. Does fuel flow from return tee with engine cranking?YESNO3YN1. Install solenoid fuel supply line onreturn tee.2. Go to engine cranks, but will notstart (WP 0014 00)0015 00-3
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