Leaking Brake Master Cylinder

[Rabs]

Hi,

Just back from the MOT centre and my 90 H 325i Cabriolet failed the MOT on a couple of minor electrical issues but also on braking system leaking (at master cylinder). When I push brake pedal pressure is good etc but there is definitely signs of fluid below master cylinder. Its not a huge amount as I have had the car 10 months and have not had to fill the brake fluid up.

What could this be? Do I need to replace master cylinder?

[Smellit]

Seals inside it more than likely, i would take it off and see if there is anything obvious.
Dont know if you can still get the kits to repair these.

[daimlerman]

Assuming that the pipe joints are not leaking,a replacement master cylinder from ECP/GSF will be easier than attempting to re-build yourself.

Cost?
About £65.

[aimlessrock]

Rabs I would change the master cylinder just for peace of
mind mate particularly if its the ordinal one car came with.
.. I changed mine last year ( no leaks) just on the safe side ( but hey that's just me)

[Brianmoooore]

Sure the leak isn't from the reservoir or its seals?

[Rabs]

Could possibly be from the reservoir seal....can you get a replacement seal?

[Brianmoooore]

http://bmwfans.info/parts/catalog/E30/C ... sion_tank/

[Rabs]

Thanks