E 150 V8-5.4L (2008)
5. Remove the bolts and the instrument panel reinforcement bracket.
6. Remove the screws and position the wire harness aside.
7. Remove the 8 heater core cover screws and the heater core cover.
8. NOTE: Use care not to spill the coolant remaining in the heater core during removal.
Remove the heater core.
9. To install, reverse the removal procedure.
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Clean and lubricate the coolant hoses with plain water only, if needed.
10. Fill the engine cooling system.