Quote:
Originally Posted by auBoxster
I did my RMS and IMS and I decided to NOT perform the RMS replacement. I even had the seal. Having done many RMS seals before, there is no benefit in disturbing a seal that is working fine. There are cases where doing so actually creates a leak if the new seal isn't good and/or the surface is not 100% - obviously you can check all these things, but why break something that isn't broken.
In saying that, the effort to be wrong and pull the gearbag etc is my effort and zero cost (other than my time) so that's an easy decision to make. Just wanted to mention that I support the mechanics view that if it is working, leave it alone - seen times when someone who "changed the RMS" and when it wasn't leaking and now it is. Hard call to make and damned if you do and damned if you don't.
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The only time we have seen the newer PTFE RMS seal leak is when they were installed incorrectly, with the wrong installed depth, dirty seal area, or use of any kind of sealer being the most common issues. If the crank and seal bore were cleaned, and the seal installed dry and to the correct spec, they seem bullet proof.