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1970 Cutlass S Defroster Door Screw Placement

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Old March 14th, 2023, 10:47 AM
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1970 Cutlass S Defroster Door Screw Placement

I have a question about where one of the screws should be placed. Does this screw go on top or bottom of that defrost door. Only thing I remembered when I took it apart was that it was a longer screw than some of the others I looked online trying get a sneak peak at one that was rebuilt on youtube and I did see the screw on top and in other video's showed no screw on top. Now I'm lost on where to put it. This is the last step before I install the heater\ac box back in the car and I just want to make sure its correct. Pics are included for reference ( not my pics)



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Old March 14th, 2023, 11:03 AM
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I’m gonna say the screw in those pictures is not the original. It looks like a hardware store self tapping sheet metal screw. It will do the job but is a bit longer than necessary.
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Old March 14th, 2023, 12:14 PM
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Understood but my question is does it go on top or bottom of the door? I'm trying to see if the function is to hold the door open just a bit when vacuum is applied or if it is to stop it from raising all the way up. None of those are my pics but when I broke my box down it looked like the top picture for sure. The other screws in the box are smaller. with the exception of a few that hold the vents.
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Old March 14th, 2023, 04:20 PM
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Figured it out. The screw goes on top of door. Applied pressure to vacuum and it gave me the answers.
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