Heater Core Backflushing

Heater Core Backflushing





1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury. Procedures

WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.

Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

2. NOTE: For additional information, refer to the cooling system flusher manufacturer's operating instructions for particular vehicle hook-up.

Use an appropriate cooling system flusher to backflush the heater core. Use Premium Cooling System Flush or equivalent meeting Ford specification. Flush with water thoroughly after using VC-1 or equivalent prior to refilling the cooling system.

3. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.

4. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury. Description and Operation

If equipped with a fire suppression system, repower the system.