F 450 2WD Super Duty V8-6.4L DSL Turbo (2008)
8. Discard the retainer.
Connect
1. Clean the tubes and lubricate with 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.