Brake master cyl ?

I have not been able to find a decent drawing of the MC.

this is the best I have so far. does not show what you need, but Hope someone has better

Peter, PM sent!

Hello Goodroc , thanks for your PM, best Peter.

Hello Peter, I tryed to fix my original master and the seals of a brake cylinder from a Fiat 500 old one are the same. However it did not do the fix for me. I then took it to a specialist, turned out it cost more then a new master and booster. So I put the new one in,greets Urbain

I finally bought a new unit from Roland Jaekel in Germany, and a clutch slave, now the system works.

Mr Jaekels stuff is top as is his advice and service.

quote:

Originally posted by suburb:
I tried to fix my original master and the seals of a brake cylinder from a Fiat 500 old one are the same.

Do you happen to have a part number?

Thanks,
Julian

Hey Julian, I give what is on the box, first nmb 89512 then cilindro freno ad. fiat, 4379471 Fiat 600- 800,greets Urbain.

quote:

89512

Does somebody know, where to find the 29mm O rings ?
I know that they are also in the dino, but 90 USD for three O-Rings is a little bit expensive.
Thanks
Peter

a little more detail dimensions would be needed to choose the oring that would FIT. are you sure orings are used?

Hello Peter, 90 us is crazy , I paid I think 15 euros for 2 brake cilinders complete, I bought them from a guy who deals in fiat parts,greets Urbain.

yes , I know . I paied a lot, but mine zylinder have 29 mm O-rings inside. It is a O-ring with a flat side.
Nobody have those rings , so I bought them at a dino shop for about 90 euros :-(

quote:

It is a O-ring with a flat side.

???????

quote:

Originally posted by goodroc:

quote:

It is a O-ring with a flat side.

???????

would that flat be on the inside diameter?

quote:

flat side.

I was just wondering, an O-ring is O-shaped in its cross section. So if it has a flat side it would have another definition and that would help in the search for one.

D-ring seal...

sort of an in between an o-ring and lip seal. the flat bottom prevents o-ring spirial failure (rolling)