Lds - O-Ring Compatibility?

[PapaD]

Hi,

I've got a leaking stearing rack. Most of the leakage comes from the o-rings fron the pump and back to the reservoir. Does anybody find anything concernng LDS and o-ring material? Is Nitrile ok, or should it be Viton, or anything else?

 

[Johndouglas]

You haven't mentioned the year of your C5 - but I wonder if it's a 2008/9 model. If so, leaking steering racks is a common problem on vehicles of these years. If you search the C5 forum you'll find we have a big section dealing with common problems. Paragraph 25 is the one you want. Here's an extract:-

25. New C5 (mark 3/X7) steering rack oil leaks - at least 8 cases so far.

We have 2 members jefflad and Howiec with steering rack leaks that are proving difficult to fix. Where the supply and return pipes join the rack, the seals are leaking fluid. It seems Citroen want to replace the pipes to fix this and that just replacing the O-ring seals does not work. Citroen also do not sell the seals separately. An additional 2 members, Parkesie and johnfing, have found a leak from the steering column shaft input seal on top of the steering rack, which initially was thought to be the pipe seals. This seal also is not available so replacement racks have been fitted. The column shaft has badly rusted so may be the cause of the leak - applying grease could possibly prevent this. See http://www.citroen-o...uid/?do=findComment&comment=75684 . See also this topic for info on replacing the rack

http://www.citroen-o...ent/?do=findComment&comment=81594



There are 2 more cases here and one being caused by corrosion of the rack where the alloy oil pipes connect http://www.citroen-o...-leaking-fluid/



Have a look at this topic from C5greener for another leak point in the piping near the rack http://www.citroen-o...-steering-leak/

[paul.h]

If you wanted to test compatability of different materials, you could try one of each in some lds fluid for a few days and see if they change size or go soft.