Econoline E350 1 Ton V8-5.4L CNG VIN M (1999)
Heater Hose: Service and Repair
Heater Hose Couplings
Heater Hose Disconnect Tool
Special Tool
DISCONNECT
1. Depressurize the engine cooling system.
WARNING: The engine must be off, fully cool and the cooling system fully depressurized before attempting to disconnect any heater
water hoses. Failure to comply with this warning can result in serious injury or burns from hot liquid escaping out of the engine cooling
system.
2. Push the heater water hose toward the tube to fully expose the locking tabs.
3. Push the Heater Hose Disconnect Tool over the coupling retainer windows to compress the retainer locking tabs.
NOTE: When compressing the white coupling retainer, the Heater Hose Disconnect Tool must be perpendicular to and on the highest point of the
coupling.
4. Pull the heater water hose away from the heater core tube.
NOTE: A slight twisting motion while pulling on the heater waster hose may be necessary to assist in the removal.
5. Plug the heater water hose.
6. Remove the white coupling retainer from the tube.
