Front seal collapse

[Guest]

I hate brakes. Just want to get that out there.

I finally have full braking power thanks to bwringer's kindly intervention. However, I did discover a leak from the master cylinder after I got the bike home. Just a slow drip from under the master cylinder. Been there and done that, so I knew it was the front seal.

As I suspected the seal had collapsed into the cup beneath it. I have two new (well, since March new) piston and cup sets, so I figured I'd just pop one out and install the the other.

Four tries later and the front seal has collapsed on install each time. It looks like this



How do I put enough pressure on the metal washer to get the circlip installed without collapsing the front seal? Any tips?

[oldrookie]

12 tries later, I think it is right.

Broke a plastic pen and slid it over the post. The pen was long enough and big enough around that I could apply even pressure while working the circlip into position.

It has only been 20 minutes, but no leaks so far.