How bad is it?

[Mr Charrington]

As I was trying to change the slave cylinder I decided that it's good to also change the seal at the gear box
at the opposite side of the slave cylinder.

I followed the instructions as seen here

http://forums.pelicanparts.com/bmw-r110 ... ead-3.html

When I finally removed the seal I saw that
although I was trying to be extremely careful I had fucked up the seal s casing .

How bad is it?
Do you think that I will have a permanent leaking from the gear box side.?
I think there's another seal behind this one at the gear box.
Is there anything that I can do like sanding or anything else ?
I'm thinking of drilling a hole at the bottom of the housing just in case.
Any suggestions?[attachment=0]IMG_20170726_130207.jpg[/]

[dysondiver]

did you pull the seal off the bearing too

[Mr Charrington]

What do you mean ?
I pulled this one out

IMG_20170726_191619.jpg (136.46 KiB) Viewed 7405 times

It's the No 2 on the diagram

https://www.maxbmwmotorcycles.com/fiche ... d=07242017

[Steptoe]

I've seen a few of these over the years with similar damage caused by previous attempts at seal removal.

I've always used a quality silicon sealant (believe me there is a vast difference in quality between sealants) spread around the damaged area and then inserted the new seal just before it's gone off, also adding a smear around the outside of the seal at the same time.
They've all remained oil tight.

A tip for removing that particular seal is to use two thick 90 degree dentists picks, again top quality items that have been hardened.

[dysondiver]

use proper engineering sealants ,,,, silicone dissolves in oil over a couple of years ,,
you get what you pay for with sealant .
i still use stag ,,, and if you have to ask ,,,

[Mr Charrington]

Thank you all for your propositions.

You mean something like this?

https://www.silmid.com/sealants/jointin ... 00ml-tube/

And what about the heat ? We aren't applying it on the cylinder head but it's still getting hot back there.

[dysondiver]

the very thing ,,, remember , these are engines , they are used to seeing heat.