BMW R45 master cylinder

[regomodo]

Hi,

I've just acquired a a '79 R45 and it has a damaged front-brake master cylinder. The reservoir & cap are fire damaged and it really doesn't look like it'll hold fluid well.

What are my options apart from an expensive replacement?

 

[regomodo]

Here's an image of the offending item


Bmw r45 master cylinder by jonno85uk, on Flickr

The cap looks worse than it is. The real problem is the reservoir. Also, i'm pretty certain an overhaul kit is needed for the piston as there is crystalised fluid blocking everything.


Crystalised fluid by jonno85uk, on Flickr

Anybody know of a cheap 13mm master cylinder to replace this heap?

 

[NvgtrWiggles]

You could probably get away with using something with a 14mm master, which there are tons of.

 

[regomodo]

You could probably get away with using something with a 14mm master, which there are tons of.

I've had a look on ebay and yep, there are quite a few. I might do some surgery on the remains and remove the lever+cylinder section as I need the twistgrip and kill-switch.

 

[regomodo]

Well, I found a complete right-hand control on ebay for £70. Plan was to do a swap but during assembly I realised I had bought a single-pull instead of a double.

I repainted the old-control and fitted the "new" cylinder. Waiting on a braided hose and should have ait bled by next week.


img_0001_05 by jonno85uk, on Flickr