O Ring

Singh · #1 19th February 2009, 08:57 AM

Someone posted this image of the O Ring below on TSN, is this from the Audi UK service procedure? After speaking to Chester Auto Transmissions I am really worried that they have not changed it and have been on the phone to the Audi A8 team, apperently the service manager did not even know what an 'O Ring' was.

Conan_the_Librarian · #2 19th February 2009, 10:05 AM

Singh,

This subject has come up derveral times on TSN. Without the o-ring there is a danger of the pump loosing vacumn and cavitation occuring. Pressure is lost withing the transmission and damage occurs.

There is only one way to find out if it is there!

You''l have to open her up to confirm it's prescence.

If however, you have no transmission issues then it's likely it is not missing. A careful watch is needed.

The picture is from the Bently on-line service manual. Audi don't have a service procedure for the 5 speed boxes. Sealed for Life!!!! Although they do have an exploded diagram in ELSAWIN with accompying directions or disassembly and reasembly.

Singh · #3 19th February 2009, 10:13 AM

Thanks Mike, box has started to feel funny now. It was ever so smooth before the change, they did not change the o ring when they done the oil change as they did not even know what it was. I'm not sure what steps to take now as they say they have followed the Audi procedure. I may ask ZF what there view is on the O Ring and get back to Audi.

Conan_the_Librarian · #4 19th February 2009, 10:56 AM

I can confirm that the audi manual says always replace. Remember the manual is directed toward rebuilding the box after disassemble. The reasembly procedure is always to replace the o-ring. Always.

To change the filter you must dissasemble the component parts, therefore the re-asemble procedure has to be followed.

From the way you say it, they may not have replaced the o-ring. That dosent mean they haven't refitted the old one. If that's the case then I would ask them 'did you re-fit the old o-ring or replace it with a new one'. Do it in writing as evoidence trail. I will try to find the Audi re-assemble procedure when I get home.

What warranty did they give on their workmanship?

Architex_mA8tey · #5 19th February 2009, 11:07 AM

Am I missing something here chaps? I thought that the method that Chester Auto Transmissions used was different ie. they used a special pump thingy to suck out the fluid while replacing it at the same time (like a heart transplant!)
If that is the case then will they have taken everything/anything apart and cleaned off magnet filters and replaced gaskets and o-rings even at all?

Singh · #6 19th February 2009, 11:12 AM

Interesting point Architex, Mike. If you could get the Audi version that would be brilliant. Just what I need to show them to make them sort my box out. The warranty would be the standard Audi one on parts 24 months?