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Window jack screw

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Old Jun 8, 2008 | 12:08 PM
  #1  
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From: Crestwood KY
Default Window jack screw

Does anyone have a picture of what the front jack screw should like like when viewed from inside the door? I think mine is missing some pieces, as it just spins in the window regulator.

Where would one look to buy a new one if needed?

Here is the link to a picture of mine:

http://s172.photobucket.com/albums/w...nt=April08.jpg


Thanks
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Old Jun 8, 2008 | 12:16 PM
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From: Eddy Texas
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Actually, i think that is the window channel mounting bolt. It is in a slotted hole, accessable from under the door, which is for adj the track in and out. It doesn't actually connect to anything inside, just clamps the pictured bracket in place. The "jackscrew" is the one behind the door reflector. It actually tips the window in and out. Not sure exactly what your trying to do, but here's a kink to the "tip-in" adj if it will help you with how the system works.
http://www.theredlion.us/TipIn.htm

Last edited by c5streak; Jun 8, 2008 at 12:21 PM.
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Old Jun 8, 2008 | 12:29 PM
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Thanks for the link, I am trying to tip the window in and correct the height adjustment. The service manual says for minor adjustments, to use the front and rear jack screws. The front one on my car does absolutely nothing, which is why I am wondering if there are some pieces missing.

I'll look again at those pics in the link.

Thanks
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Old Jun 8, 2008 | 12:56 PM
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From: Eddy Texas
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Is the access plug for the pictured screw above, a rectangular plug on the bottom of the door( about the size of a match box) or a small round one? The front jack screw, I think, is found behind the small(about 3/4") round plug. It should be used only for a very small height adj, not for tip-in.
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Old Jun 8, 2008 | 01:12 PM
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No, there is nothing behind the small plug, I think it is a drain access hole or something. Here is a picture from inside the door.

http://s172.photobucket.com/albums/w...April08001.jpg
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Old Jun 8, 2008 | 02:24 PM
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From: Eddy Texas
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So which screw exactly are you turning that doesn't seemed to be attached to anything. The one in the first pic that you access from the outside of the door on the bottom?
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Old Jun 8, 2008 | 04:36 PM
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Notice the front mounting bolt is in a slotted hole.
I think that does affect the tip in adjustment, depending on how the bolt is centered in the slot. There should be a rubber bushing on the mounting bolt on each side of the guide rail. I don't see that in your picture.
There are other jack screws on the glass mounting brackets of each of the regulator guides, but those are used to adjust the up and down travel of the glass.
The lower mounting points have nothing to do with adjusting the glass height.
For major adjustments to the glass, you will need to adjust the glass in the mounting brackets. The bolts are slotted so you can move the glass up and down and still have the glass fully seated in the bracket. The jack screws on each guide rail can be used for minor adjustments. The glass can also be moved forward or rearward in the brackets to center the glass in the window opening.

Last edited by TEXHAWK0; Jun 8, 2008 at 04:48 PM.
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Old Jun 8, 2008 | 07:24 PM
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Notice the front mounting bolt is in a slotted hole.
Yeah, I think those are the parts that I am missing. Does anyone have a picture or diagram of what should be there?

Thanks
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Old Jun 8, 2008 | 07:50 PM
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From: Longview Texas
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This link has a picture that shows the front mount with the black rubber bushings in place.
http://forums.corvetteforum.com/show...ndow+regulator
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Old Jun 9, 2008 | 10:34 AM
  #10  
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From: Crestwood KY
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That's exactly what I was looking for, thanks!!

Now, where do you find that part or part number?

Thanks
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Old Jun 9, 2008 | 10:49 AM
  #11  
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Should be able to find it here:

http://www.gmpartshouse.com/
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Old Jun 9, 2008 | 11:33 AM
  #12  
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From: Crestwood KY
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I already tried that, but I can't find anything other than the window regulator.

I need a parts diagram or something like that.
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Old Jun 9, 2008 | 12:01 PM
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Download this! It's 47mb so beware. This should have your part number. C5PartsNumbers.pdf

Check out Group 10 - Door Hardware

Last edited by Stock Man; Jun 9, 2008 at 12:14 PM.
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Old Jun 9, 2008 | 04:45 PM
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From: Crestwood KY
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Thanks, that helps.

It looks to me like I need item 20, does that look right to anyone else?

Thanks
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