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neil_911
Monza


Joined: 04 Dec 2016
Posts: 150
Location: Doncaster


PostPosted: Tue Feb 20, 2018 7:27 pm    Post subject: PDK oil leaks Reply with quote

Hi all,

I'm mid way through some winter maintenance on my 997.2 C2S.

I've had the covers off underneath looking around and checking a few bits (all good actually).

Last year during a service i had an advisory for a leaking PDK oil sump pan - which I've had replaced. Now i had a look around this area and it was looking a little wet again, But not from the sump pan - from somewhere slightly higher up and tracking down.

Looked to be around the shifter arm from a sensor output? I've attached a pic to see if anyone knows which bit i'm talking about.

My question is, Anyone had any work done like this? Is the sensor just an o-ring replacement? I'm assuming if i pull the silver clip the sensor will just pop out and allow me to change the o-ring. (although i'm not sure if its below the oil service level)

Picking the brains of fellow 911 owners once again Smile
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Basalt Black 997.2 C2S PDK - for the weekends
Mercedes S500 5.0L V8 - for the commute
 



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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5014
Location: Brighton


PostPosted: Tue Feb 20, 2018 7:34 pm    Post subject: Reply with quote

Im not sure off hand ..

But thats not what i would call a leak and to be honest not something i would worry about .. if a drip forms then fair enough .. but we call that sweating in my trade .

I would certainly check the availability of parts before removing anything .. in other words can you actually buy the O ring or seal that goes there .
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neil_911
Monza


Joined: 04 Dec 2016
Posts: 150
Location: Doncaster


PostPosted: Tue Feb 20, 2018 7:45 pm    Post subject: Reply with quote

Cheers Dermot.

It was a noticeable leak though, Not on the floor but definitely enough to wet the sump pan.

Problem with PDK stuff is its heavily dependent on oil pressures and levels. I've not had any jerking yet but a low oil level would probably lead to some driving issues.
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Magic919
Imola


Joined: 05 Jun 2013
Posts: 787
Location: Berkshire


PostPosted: Tue Feb 20, 2018 8:16 pm    Post subject: Reply with quote

When mine leaked oil, it threw up a transmission warning without gearbox function being impaired.
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997.2 C4S PDK
 
  
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neil_911
Monza


Joined: 04 Dec 2016
Posts: 150
Location: Doncaster


PostPosted: Tue Feb 20, 2018 8:18 pm    Post subject: Reply with quote

Magic919 wrote:
When mine leaked oil, it threw up a transmission warning without gearbox function being impaired.


Was it an easy fix mate?
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Magic919
Imola


Joined: 05 Jun 2013
Posts: 787
Location: Berkshire


PostPosted: Tue Feb 20, 2018 8:26 pm    Post subject: Reply with quote

Yes, but that’s not good news. The leak was a seal within the gearbox that then emerged via a cover screwed into the casing.

Porsche don’t do any work on the gearbox and I got them to fit a new one.
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5014
Location: Brighton


PostPosted: Tue Feb 20, 2018 8:49 pm    Post subject: Reply with quote

Do you have drips forming on the sump pan ? or is it similar to your picture ?

The trouble with these is that so few parts are available .. i had a quick check on a site i look at for parts and that seal you mentioned is not listed ..

https://www.deroure.com/diagrams.asp?MAK=3&MDL=30&TBL=3759&SMA=&SMO=0&ST=&SC=0

if you have drips forming then fair enough something needs to be done .. but there is still rather a lot of oil in these .. i would prefer a lvl check first to see how much it has lost before thinking about repair .

Main reason for this .. you might end up with a new box being needed .. if thats for a " sweat " then i havent done my job here properly ..

just trying to advise and not spend your money here Smile
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neil_911
Monza


Joined: 04 Dec 2016
Posts: 150
Location: Doncaster


PostPosted: Tue Feb 20, 2018 10:14 pm    Post subject: Reply with quote

Yeah, in my opinion it’s excessively wet and needs rectifying. I’d let it go if it was mechanical misting/oil seepage.

I’ve a feeling it was leaking before from the same place but the Indy just assumed it was the sump pan leaking. I guess best I can do is clean it all off properly and road test it.

All the lines around the heat exchanger looked abit damp too, but that’s probably more where it’s tracked down and the vent in the undertray blowing it around.
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5014
Location: Brighton


PostPosted: Wed Feb 21, 2018 7:35 pm    Post subject: Reply with quote

Yep .. fair enough and thats what i would do .. good clean off , run it up .. normally on a ramp and see where the leak is coming from .

Then go from there .
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