Originally Posted by nmeyer
I have a 61 Tradewinds with a rear roof vent that has two knobs mounted on shafts that pass through metal cylinders that appear to be hinged. The opposite ends of the shaft from the knobs have a kind of flange attached to the vent that barely moves when the knobs are turned. It appears to me as if the knobs should turn and then the vent should raise, but the vent barely comes loose and slides around a little and hardly any air can get in or out. Was this some kind of vent that could be open when pulling? Is there supposed to be a fan there? Any guidance appreciated. I can take pictures if that helps. I think it's original equipment.
Sounds like the vent operators are not working as they should.
You can remove the cover along with the operators, by opening the operator bracket at the bottom of each operator. There is 2 small posts that hold those operators in place.
You can then lube the operators with some WD-40, over usually several days, so that they will release from the internal corrosion.
Be patient, as this will probably take several days to accomplish.
After the operators correctly function, you can simply reinstall the vent cover.