I have a S5 Turbo, and I'm trying to take it apart for cleaning. I'm having a little difficulty separating the Turbine housing, from the center section. I'm also curious, as to how the whole thing can be taken apart, cleaned, and specs checked. Anyone one know of a site, that has a How-to for this, or some personal advice? Haynes manual just ain't cutting it....

Any help would be appreciated.

 

Yes, seperating the turbine housing isn't easy due to the carbon build up and corrosion from extreme heat.
First, I recommend you leave this stuff to the experts and that I am not an expert. My methods are harsh and knowingly not the proper procedures but understanding that you're this far, your curiousity has gotten the best of you and that you are determined.

*After removing the 6 bolts and the 2 half ring plates take a center-punch or scrib and make one match mark on the housing and one on the cartridge so that when reassembling they are returned in their proper alignment.
*Spray good amount of penatrant (I use PB) on seam where the two pieces seperate. Give it time to saturate, overnite if you need to.
*Setup cartridge in a vise or something so that the turbine faces down and will allow you to carefully bang the housing off evenly with a hammer. Again, I did use the word "harsh"... You should know that the turbine is delicate and the tolerance between the blades and inner housing are extremely close, if you don't you will soon learn...(that usually comes just before learning how much a complete professional rebuild costs using all new parts and what it would of cost if you were able to use your old parts)
* It's pretty obvious to figure out if you have a good sense of mechanical skill. Just continue to spray penatrant, wait some more, and bang away if needed.
Remember, you have been warned...

Sensei

 

Ok, I understand the the tolerances on a turbo are a feat of engineering, and that I could do some serious damage to the turbine wheel if I just go to town on the Housing.

One thing I'm still not 100% on is how all of the six bolts that hold the turbine housing on, two of them are too close to the oil pickup and return flanges to come all the way out... why in the world would you put them there? How do you get them out (or do they need to come all the way out to release the turbine)?

 

As you remove the two bolts that touch the oil feed and return flanges on the center section, it pushes the center section up and separates it from the turbine housing.

It's actually really easy once you get down to it.

Dale

 

Ok, thats what I thought, I just didn't want to break anything.

 

On a similiar note I was (being a chicken) thinking of having mine rebuilt for me. 120,000 miles on stock turbo which still worked when engine seized.

1.) Is it worth it to rebuild.....how much longer will it last.

2.) How much for a rebuild and are there any recommendations out there of places to check out.

Thanks

zub