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Peter61

996 Cabriolet repairs Melbourne

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Hi all,

does anybody no someone who can repair the mechanics on a 996 cabriolet roof.

I’ve replaced the rams, now the roof isn’t working properly 

many help would be appreciated 

regards

PETER

Edited by Peter61
Sorry fat thumbs, should be 996

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Specifically what isn't working? There's numerous failure points but you can narrow things down a little.

 

Plus should move this topic to watercooled 911s for more visibility

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Hi slknv,

Specifically I replaced the rams, reconnected everything, filled the oil reserve up and tried to open the roof but it was making noises as tho it had a lot of air in the system.

I then checked the oil reserve and noticed it empty, so I guessed that the rams and lines where empty. I filled the oil tank again, thinking all would be good but alas still no good. The clamshell is closing at a different rate to the roof and the roof is also not closing correctly, the front lock keeps cycling thru, as tho somethings not locking in??

I’ve added a photo of the roof when it’s clashing with the clamshell.

Not sure what else to say 

Any thoughts would be appreciated.

also not sure how to move the topic??🙄🤔

Peter

38BE5053-06AF-4ADC-979A-1A3D82C7A51A.jpeg

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Not sure how many times you have cycled the roof after installing the rams. The noise sounds like mine with low hydraulic fluid and was very slow.

I had to cycle and refill mine 3 times after reinstalling. It’s a fidgety  job as you have to keep pulling it apart to refill and then refit and cycle the roof 1-2 times after each reservoir top up. 
I didn’t have the clash issue. Possibly it’s time for a Porsche specialist or dealer intervention

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On 04/10/2021 at 18:52, Peter61 said:

Hi slknv,

Specifically I replaced the rams, reconnected everything, filled the oil reserve up and tried to open the roof but it was making noises as tho it had a lot of air in the system.

I then checked the oil reserve and noticed it empty, so I guessed that the rams and lines where empty. I filled the oil tank again, thinking all would be good but alas still no good. The clamshell is closing at a different rate to the roof and the roof is also not closing correctly, the front lock keeps cycling thru, as tho somethings not locking in??

I’ve added a photo of the roof when it’s clashing with the clamshell.

Have a look at my blog post when I was fixing my 996 roof- http://www.dtmtune.com/2020/08/porsche-911-996-and-997-convertible.html

Looks like you've done a very similar procedure to mine. When refilling the hydraulic fluid, it does take 3-4 goes at topping up the reservoir to get it all through the lines and cylinders as mentioned above. You may need to lift the roof manually and hold it up while you check and keep topping up the reservoir to maximum. If there's not enough fluid in the system, it won't move the roof quick enough to avoid it hitting the clamshell. Also, have you made sure the pin engaging the potentiometer on the left cylinder is engaged properly?

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Slknv,

I pulled everything out again today and reinstalled with the potentiometer connected this time🙄🤷🏼‍♂️
Thanks for that info, as a general comment the roof is better but not 100%.The issue now is the front locking mechanism doesn’t engage correctly and tries to cycle thru, I can hear some whirring noises from the rear.

The other minor issue is the right flap doesn’t come up in the first try, the roof goes into fault, I then push to open again and it slowly sets into place and the clamshell closes correctly.

As I said, it’s at least working better. Now to sort the last couple of minor issues, the flap and the locking mechanism.

Any further thoughts would be greatly appreciated.

Regards

Peter

Edited by Peter61

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Good to hear the potentiometer is now reconnected, that'll go some way to fixing the issue as it dictates the operation of many other parts of the roof mechanism

The flaps not turning is a common fault. You may need to grab a long allen key and turn the hex nut located in the little circular flap where the hardtop inserts to, just a half or full turn, in order to reset it a little. There's also a microswitch thingy in the side flap that sometimes needs to be bent a tiny bit. Also lubricate the vertical screw thing with some silicone spray.

The front locking mechanism - the hook in the roof? You may want to remove the little plastic flap that covers the hook, and check the gearing mechanism in it to make sure it's not stripped first before looking for other issues

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