Hi,
I had to replace the entire power steering oil cooler assembly on my S2 (zig zag shaped pipe work, with flexible hose attached at one end going to fluid reservoir, and the other end meeting the steering rack itself - sits behind the bumper, sort of beneath the driver's side pop up light), as a tiny hole had developed in the metal which ended up with ATF gushing out and a very dry power steering system steering one day.
This does happen apparently, just a known fail point for the system (lots of variation between hot/cold/damp conditions I guess...).
Having never worked on a turbo, I can only guess its the same and comment from my experience (although, I would be fairly confident its the same system)...
The hose between reservoir and power steering pump can be replaced as a single item, with part number 944 347 445 05. However, the other hose leaving the reservoir comes as part of the oil cooler assembly itself (zig zag shaped metal pipe work mentioned), which has part number 944 347 459 03. From memory, the flexible hose in this instance doesn't attach to the oil cooler with a jubilee clip, but comes hard connected from factory. I.e. you might not just be able to replace this with some new flexible hose - I'm thinking the pressures involved here, may be a reason its like that, etc etc. Essentially, you may be looking to replace the entire oil cooler assembly for the PAS system (which from memory, is around £120).
Take a look at these pages, which I found very useful when working on my PAS system (should help to give you an idea of where things are, and what to expect):
http://944foot2thefloor.blogspot.com/20 ... e-944.htmlhttp://forums.pelicanparts.com/porsche- ... cture.htmlAssuming you do end up pulling out both hoses from the reservoir, and replacing (or at least removing for the purposes of inspection), here is what I had to do:
* raise front of car up onto jack stands
* remove driver's side wheel and arch liner
* drain fluid by removing hose connected to top of power steering pump (this hose goes directly to the reservoir, so can be removed now)
* bottom end of oil cooler attaches to another short piece of flexible hose, near the steering rack - jubilee clip here can be released now, which will allow remaining fluid contained in system to escape (when drained, jubilee clip attaching this to the reservoir can be released) - oil cooler assembly is now isolated, ready for removal!
* oil cooler attaches to a bunch of clips connected to the small engine oil radiator beneath it
* given the very awkward location of the oil cooler assembly, I found myself having to release the screen wash reservoir and pull it upwards as much as possible, and also the releasing the engine oil radiator and pushing it out of the way too. Only then will there be enough room to pull the oil cooler pipe work out
* I believe if you remove the front bumper, it is much easier to get to the pipe work, but that seemed like a large headache that I didn't want to experience! The method described above worked fine for me, a little bit of fiddling and some scratched knuckles, but very doable indeed for a backyard diy mechanic
well, I managed it anyway!
Hope that helps to make the job a bit clearer. Having said all of the above - if you are just looking to try and replace a few bits of flexible hose, without going the full hog with the oil cooler assembly, it might be worth speaking to a local hydraulic specialist, to see if you can just add in a small link of fresh rubber hose in place of your perishing ones currently on the car - it might be doable, but I really wouldn't like to comment on that.
Give me a shout if I can help with anything at all!
Good luck!
Cheers,
James
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