Navigator 4WD V8-5.4L DOHC VIN R (2001)
4. Pull the heater water hose away from the heater core tube.
NOTE: A slight twisting motion while pulling on the heater water hose may be necessary to assist in the removal.
5. Plug the heater water hose.
6. Remove the white coupling retainer from the tube.
7. Spread the retainer tabs apart and slide the retainer off the tube.
8. Discard the retainer.
CONNECT
1. Clean the tubes and lubricate with MERPOL(R) meeting Ford specification ESE-M99B144-B or plain water.
2. Install a new coupling retainer, spacer, and lubricated O-ring seals into the quick disconnect coupling housing.
3. Push the heater water hose with a quick disconnect coupling onto the tube.
4. Make sure the coupling is fully engaged by lightly pulling on the heater water hose.
