Econoline E350 1 Ton V8-5.4L Prop SOHC VIN Z (1998)
Heater Core: Service and Repair
Back Flushing-Heater Core
1. Once pressure is released, remove the pressure relief cap.
WARNING: NEVER REMOVE THE PRESSURE RELIEF CAP WHILE THE ENGINE IS OPERATING OR WHEN THE COOLING
SYSTEM IS HOT. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN DAMAGE TO THE COOLING SYSTEM
ENGINE OR PERSONAL INJURY. TO AVOID HAVING SCALDING HOT COOLANT OR STEAM BLOW OUT OF THE DEGAS
BOTTLE WHEN REMOVING THE PRESSURE RELIEF CAP, WAIT UNTIL THE ENGINE HAS COOLED, THEN WRAP A
THICK CLOTH AROUND THE PRESSURE RELIEF CAP AND TURN IT SLOWLY. STEP BACK WHILE THE PRESSURE IS
RELEASED FROM THE COOLING SYSTEM. WHEN YOU ARE SURE ALL THE PRESSURE HAS BEEN RELEASED, (STILL
WITH A CLOTH) TURN AND REMOVE THE PRESSURE RELIEF CAP.
2. Partially drain the cooling system.
3. Use cooling system Flush-ALL Flush Kit Hardware Package and Drain Kit to backflush the hater core. Use Ford Premium Cooling System Flush
F1AZ-19A503-A meeting Ford specification ESR-M14P7A.
NOTE: Refer to the cooling system Flush-ALL Operating Instructions for particular vehicle hook-up.
4. Fill the cooling system.
