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TB
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Joined: 09 Jun 2017
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PostPosted: Fri Jun 09, 2017 9:33 pm    Post subject: 997.2 PDK bleeder screw slight leak? Reply with quote

Slight leak from bleeder screw in PDK. Advised by OPC that I need a new PDK. I was able to buy a new bleeder screw ref 9G1 321 885 00. Any thoughts?
 
  
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Demort
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Joined: 21 Mar 2015
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Location: Sussex


PostPosted: Fri Jun 09, 2017 9:58 pm    Post subject: Reply with quote

Can you supply any more info ? a picture perhaps as im unaware of a pdk bleeder screw .. drain bungs yes but i know of nothing that needs bleeding on a pdk im afraid .
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TB
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PostPosted: Sat Jun 10, 2017 10:01 pm    Post subject: Reply with quote

See snaps of bleeder screw.
Also cutaway of pdk.
 



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TB
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PostPosted: Sun Jun 11, 2017 6:16 pm    Post subject: Reply with quote

See location.
 



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Demort
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PostPosted: Sun Jun 11, 2017 6:51 pm    Post subject: Reply with quote

This rings a bell and i have a horrible feeling the OPC might be correct .. i think its the gear oil bung and when it leaks there it indicates that a seal has failed inside and you are getting an oil mix of the 2 fluids .

The bung in the picture has been removed before which would lean towards someone trying to fix these previously perhaps.

Now might be a good time to try and get a warrenty .
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TB
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PostPosted: Tue Jun 13, 2017 6:23 pm    Post subject: Reply with quote

Snaps of bleeder screw.
Any idea what it wa designed to do?
How come you can buy the part?
 



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GP41
Nürburgring


Joined: 19 Oct 2014
Posts: 453
Location: Lancs


PostPosted: Mon Jul 03, 2017 9:29 am    Post subject: Reply with quote

Any updates here?

I had a leak from PDK about a year ago. I thought it was following a service where oil had been changed and overfilled. It occured after a very long journey.

The leak was cleaned up and no further issues were found but after another very long run I've found another leak. Can't tell exactly where it's coming from yet but this thread has certainly got me thinking.

How have thngs turned out?
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TB
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PostPosted: Mon Jul 03, 2017 6:32 pm    Post subject: Reply with quote

I cleaned the area around the existing bleeder screw and applied sealant to the end and sides.
I checked it after two days and again after a few weeks later and there was no leak.
The PDK is working the same as when I got the car in March.
I have done about 6k miles.
See snap

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GP41
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Joined: 19 Oct 2014
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PostPosted: Mon Jul 03, 2017 6:41 pm    Post subject: Reply with quote

OK, thanks - good to know you haven't had any more trouble.

Mine's going in for investigation on Thursday. WIll see what they know at OPC about this issue that Demort mentioned.
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TB
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PostPosted: Mon Jul 03, 2017 7:26 pm    Post subject: Reply with quote

Not sure if I want to find out the truth.
Would like to know why the bleeder screw is available to buy if it should not be changed?
Grateful for any info from your OPC visit.
 
  
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Magic919
Spa-Francorchamps


Joined: 05 Jun 2013
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Location: Berkshire


PostPosted: Thu Jul 06, 2017 8:04 pm    Post subject: Reply with quote

When mine did it they said it's a seal inside that leaks and the oil is just using that route to get out. I had the gearbox replaced.
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GP41
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Joined: 19 Oct 2014
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Location: Lancs


PostPosted: Thu Jul 06, 2017 8:09 pm    Post subject: Reply with quote

They've confirmed that this is the source of my leak but don't know yet whether it is internal or external seal. They've ordered a replacement bung but have also sent photos off for review. I await news.....

Looks like there's a bit of a trend here!
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Demort
Paul Ricard


Joined: 21 Mar 2015
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PostPosted: Fri Jul 07, 2017 7:59 pm    Post subject: Reply with quote

Magic919 wrote:
When mine did it they said it's a seal inside that leaks and the oil is just using that route to get out. I had the gearbox replaced.


Sorry i lost track of this thread but the above was what i had herd through the mechanics grapevine if you like.

Not something ive come across and i have no idear what this bleeder valve is for and trust me i have searched for info on it.

From the shape then it looks like it seals two internal ports and when released would indeed act like a bleed valve but im just guessing here .

My worst assumption is it will need a gearbox .. hence my warrenty quote from much earlier im afraid .. hopefully im totally wrong though .
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Magic919
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PostPosted: Fri Jul 07, 2017 8:50 pm    Post subject: Reply with quote

They suggested I could keep popping back to have it topped up. I didn't fancy that and had the box replaced.
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GP41
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PostPosted: Fri Jul 07, 2017 10:35 pm    Post subject: Reply with quote

Demort wrote:
Magic919 wrote:
When mine did it they said it's a seal inside that leaks and the oil is just using that route to get out. I had the gearbox replaced.


Sorry i lost track of this thread but the above was what i had herd through the mechanics grapevine if you like.

Not something ive come across and i have no idear what this bleeder valve is for and trust me i have searched for info on it.

From the shape then it looks like it seals two internal ports and when released would indeed act like a bleed valve but im just guessing here .

My worst assumption is it will need a gearbox .. hence my warrenty quote from much earlier im afraid .. hopefully im totally wrong though .


Thanks Demort.

Ive got warranty, fortunately....
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GP41
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PostPosted: Sat Jul 15, 2017 8:30 pm    Post subject: Reply with quote

New screw getting fitted. We'll see if it cures it...
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GP41
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PostPosted: Wed Jul 19, 2017 5:54 pm    Post subject: Reply with quote

On further inspection, new screw isn't going to solve it. New box is. They did say they'd never come across this before though so maybe not such a common problem. I'm intrigued to know how damage could have been done to a totally internal seal inside a sealed unit. Confused

Any suggestions for other work that ought to be done while transmission (and possibly engine) is out?

If I've been warned that the coupling of the cooling system are corroding (as they are well known to) is the fix for that something that requires engine out? I was sure I'd read that on here at some point. If so, it might be worth seeing whether I could sort that at the same time. I realise that usually Porsche will refuse to deal with issues that are close to being at a point of needing replacement just because it is easier and instead tend to make you wait until something has gone wrong, even if it is more costly and disruptive to do so, but it's worth a try???

Thanks for all your help so far. It's so much less stressful going into these situations with a fair understanding of likely outcome Smile
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Magic919
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PostPosted: Wed Jul 19, 2017 6:08 pm    Post subject: Reply with quote

It's not really a sealed unit, it's more that Porsche never work on them. A ZF specialist should be able to fix one.

I don't think they dropped the engine to do my gearbox, though the reverse was certainly true.
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GP41
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PostPosted: Wed Jul 19, 2017 6:20 pm    Post subject: Reply with quote

Ok thanks. I'll see what they say.
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TB
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PostPosted: Wed Aug 23, 2017 5:59 pm    Post subject: Reply with quote

Any update?
 
  
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