RMS sleeve? Scratched case wall, now what?

[JFP in PA]

Originally Posted by Meir

Thanks JFP.
Was wondering if you have the detailed procedure.
I have done it twice with the tool, but I'm still not sure about the blue plastic ring.
Does it stay on the seal and mounted on the crack with the tool?
That's the way I did it and wondering if it's the correct way.

The tool is designed with the blue plastic ring in mind. You slide the new PTFE onto part #5 above with the ring still in place before attaching the tool to the crank; after the installation, you will find the blue ring still on part #5 when you remove it from the back of the crank.

The blue (or sometimes green) ring is there specifically to protect the inside of the PTFE seal from picking up any contamination like lint or fingerprints during the installation process, which is critical to the seal successfully working. We have installed literally hundreds of the PTFE seals and have never had an issue, but that said, we have also had to reinstall several that were originally done DIY by the car's owners which subsequently leaked. Most of the time, the problem was associated with the seal either not being in straight or installed at the correct depth, but we have also seen several the were leaking badly because someone decided to use sealant around the outside circumference, or installed them dirty. These seals work extremely well when installed correctly, but are not at all tolerant to any form of contamination or poor installation techniques.

[IMG]http://www.****************************************************.com/mm5/graphics/00000002/rmsbig.jpg[/IMG]

[Meir]

Thank you very much JFP for the detailed explanation.
i guess my common sense worked well this time, as i did exactly as you described.
Joe. if you ever need to borrow the tool, you know how to find me

[JFP in PA]

Originally Posted by Meir

Thank you very much JFP for the detailed explanation.
i guess my common sense worked well this time, as i did exactly as you described.
Joe. if you ever need to borrow the tool, you know how to find me

No different than a lot of people who spend the money to get the factory tool, which is a work of art itself, and then end up scratching their heads about the protective ring and what to do about it. Once you've seen how it works, it is both a pleasure and a snap to use, and makes it nearly impossible to get the installation wrong, which is what makes it worth every cent it costs.