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993 cabriolet top allignment

Hi, can someone help me out, I need to know how to allign the cabriolet top on a 993. The allinmnet at the top of the winshield where that cabrio meets the windshield top for locking is out, one side seems to be short and leaves a small open crack between the winshield top and the cabrio ? many thanks
Old 07-07-2005, 11:37 PM
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Call your official Porsche dealer as some cabs are due for a recall for top motor replacement.
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Old 07-08-2005, 08:56 AM
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The recall applies to all 993's and your dealer will align it for you. If you want to do it yourself, pop off the panels behind next to the rear seats and you'll see a vertical bolt with nuts on either end supporting the frame. If you raise the bolt on the side where there's a gap, that might take care of your problem. It's also possible that one side is slightly more advanced than the other. You can figure out which problem you have by loosening the large bolt on each roof transmission (or removing the number 6 hex bolt on each arm) and operating the top manually. If it lines up properly manually, the transmissions are probably slightly out of sync. If that's the case, you can disconnect the cable from one side of the roof motor behind the seats and turn it until the arms line up. Drink lots of water as you'll sweat like a fat chick trying to fix it.
Old 07-08-2005, 04:36 PM
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Many thanks, I took your advise, losened the bolts and operated the top manualy and one side is still short. I will now raise the vertical bolt.

When I took the side panel off I saw two switches near the transmission, would you happen to know what they do? do they control the rear motors, if yes should the top one be set if the top is up? in my case there is no contact with the top or bottom switch once the top is up.
Old 07-09-2005, 08:41 AM
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The two microswitches on the passenger side transmission tell the motors when to stop when going down and tell the warning indicators when the roof is up all the way, I believe. The top one should be closed (pinched together) when the top is closed. Be careful with the bottom switch, because it's the only thing that tells the motors to stop pulling the roof down when it's all the way open. It's a bit of trial and error. I suggest marking the bolt's current positions with a sharpie marker before doing anything too drastic, especially if you try to adjust both sides at the same time.
Old 07-09-2005, 01:41 PM
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Thanks Monkey Boy this helped alot. Do you by anychance know where the control (computer) for the convertable top is located in the car?
Old 07-25-2005, 12:56 PM
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In driver's footwell under dash vent - see this thread:
http://forums.rennlist.com/rennforums/showthread.php?t=137428
Old 07-25-2005, 01:19 PM
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I have to disagree here about the top microswitch. It should be open when the top is up. According the the manual the top microswitch should not come into play in normal operation. I believe it is only to stop the operation of the top in case the frame travels too far.
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Old 07-26-2005, 04:19 AM
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I'm sure krauthead and the manual are correct. My assumptions were based on trial and error.
Old 07-26-2005, 04:23 AM
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Thanks Krauthead / Monkey Boy, how about the bottom micro switch same application?

Now I am having issues where the top two locking mottors unlock and operate fine, but the roof motors are not working (I have 2 motors for the roof behind the back seat), any suggestions apart from checking the control unit, am I missing any other microswitches?
thanks
Old 07-26-2005, 06:07 AM
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I'll defer to krauthead on the bottom switch, but on my car if it isn't closed when the roof is in the full open position, the motors and transmission will continue turning until you hear ugly metallic noises.

I'd remove the cables at the motor to make sure that the motor isn't working. Sometimes the cables shrink and cause them not to get turned by the motor, but it sounds odd that neither side is turning. My guess is that it's the controller.
Old 07-26-2005, 06:17 AM
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Monkey is correct. The lower microswitch is closed when the top is fully lowered. You might just need to re-align the mechanism. There is a very good thread on how to do this. I will be looking for it. It is a way to set the mechanism to factory default.
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Old 07-26-2005, 11:36 AM
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rblive, Here is a good post on this. 1992 964 convertable top mechinism repair
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Old 07-26-2005, 11:47 AM
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I was not able to follow the thread?
Old 07-26-2005, 11:55 AM
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I don't know why that won't work. I have a paper copy of the thread printed and copied it exactly. I also searched under the title of the thread. 1992 964 convertable top mechinism repair. It would not come up either. The misspellings in the thread title are intentional.
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Old 07-26-2005, 12:04 PM
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Is it possible for you to email me the copy of the thread? thanks
Old 07-26-2005, 12:13 PM
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Sure, I will do that. Just give me your address.
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Old 07-26-2005, 12:20 PM
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Perhaps our moderator, AFJuvat, could locate this thread. He wrote it on 11-19-2003.
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Old 07-26-2005, 12:31 PM
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Garage
I would also appreciate a copy of this thread!

Thanks,

Chrisb@drextec.com
Old 08-01-2005, 05:09 PM
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I just sent it to you
Old 08-03-2005, 11:05 AM
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