Air leak in turbocharger pressure line, AFN engine

Hello everyone,

After a successful head gasket replacement, I'm now experiencing problems with the oil pressure line to the turbocharger. Oil is leaking from the connection between the fitting nut and the pressure line.

Zum Abbau der Leitung habe ich den kompletten 'Adapter' zwischen Turbogehäuse und Druckleitung abgeschraubt, weil sich die Überwurfmutter allein nicht bewegen ließ. Der 'Adapter' hat sich immer mit gedreht. Nachher habe ich den 'Adapter' dann einfach wieder mitsamt der installierten Überwurfmutter eingeschraubt. Nun aber die Undichtigkeit im Bereich der Überwurfmutter. Eigentlich sollte man meinen, dass man die Überwurfmutter einfach nur fester anziehen muß. Klappt aber nicht. Die It's still stuck firmly to the 'adapter.'

What now? Is there another solution besides completely replacing the pressure line and the 'adapter'?

Thank you for the tips.

Regards,
Thomas.

Hi Thomas,

...that doesn't sound good . If the adapter rotates along with it, then either the pressure line will twist and potentially tear, or the contact surface between the line and the adapter will be damaged. I once had this problem with an injector line -> that's why I always hold the adapter in place when loosening such lines, especially if you feel that the loosening torque is very high.

Do you have two open-end wrenches from Hazet? With enough force and leverage, the Hazet wrenches should be able to loosen the connection . I can only recommend Hazet tools (and Gedore as well) again and again... these tools are a lifesaver, especially when dealing with connections like these .

But don't worry about it... it's a rule of thumb for me that something extra always breaks when I do things like that .

but be careful that no chips get into the turbo

Best regards, Christian.

Hello Christian,

You were, of course, right. The oil pressure line was sheared right off at the coupling nut.

Habe mir tatsächlich einen offenen 17er-Ring gekauft. Von Gedore! Hat für das Kontern aber trotzdem nichts gebracht, weil um die Schraube herum nur 2-3mm Platz ist. Da passt der Ring nicht drüber. Das kann doch nur heißen, dass VAG entweder ein Spezialwerkzeug zum Kontern hat, oder dass es unmöglich ist, die Leitung ohne Zerstörung auszubauen. Zum ZK-Abbau hätte man sie übrigens auch an der anderen Seite abmachen können....

Regards,
Thomas.

Hi Thomas,

Actually, you should be able to remove the pipe without any special tools. To hold the adapter in place, I would recommend getting a Hazet combination wrench . There are also open double hexagon sockets available for the coupling nut, in case the open ring wrench doesn't fit:

http://www.hazet.de/deutsch/katalog/suche_3.asp?F=4550&H=100&U=800

Otherwise, you will have to say goodbye to the old printing pipeline .

Best regards, Christian.

Hi Christian,
apter is out.

Well, the problem is already solved. I just removed the entire adapter and replaced the cable. It cost 29 euros and a lot of frustration.

Regards,

Thomas.

meyert wrote:

29 Euro und viel Frust.

Well, things like that happen all the time when working on cars... You're not alone .

Best regards, Christian.