F 450 4WD Super Duty V10-6.8L VIN D (2004)
1. NOTE: Be sure the vacuum harness is correctly routed through the dash panel opening.
Position the evaporator core housing on the dash panel.
2. NOTE: Have an assistant hold the evaporator core housing in place while installing the upper nuts.
Install, but do not tighten the upper retaining nuts.
3. Install, but do not tighten the lower retaining nuts.
4. Connect the vacuum harness connector.
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Attach the vacuum harness connector to the heater core housing.
