Brake master cylinder

Can any throw light on why there is a difference with the two different types of threads for the pipe connections.

I have taken my original one off the vehicle due to leakage from the cylinder to find that the bores are corroded and have purchased a new one from Craddocks only to find that the one that has been received is different from the original due to the holes being of different size maybe different threads? ? ?

Any help appreciated

Old Land Rovers do not die they just grow old with dignity.

Hi,

Does your new cylinder look the same as the old one? Sorry, I can't remember the names of the two types, but one has a big nut on the end, and one doesn't.

Both types have two holes, one connects to the reservoir, the other connects to the pressurised system. These holes were swapped over when they changed the type of cylinder. The big hole connects to the reservoir, and if you have the big nut, its the hole nearest the pushrod end. If you don't have the big nut, its the hole furthest from the pushrod. DO NOT RELY ON ANY DRAWINGS.

I THINK!

Warning. The very sound looking pipe from the reservoir on my S2 was as strong and flexible as a pencil lead. Ooops!

602

I believe this might be to do with the balancing of the fluid flow between the back and the front brakes. The smaller connector will restrict the flow whereas the larger will allow more fluid and therefore allow more pressure to be applied to the brakes. What I dont know is which way round these go. I .E does more pressure get sent to the rear brakes as the brakes lines are longer, or does more pressure get applied to the front in order to prevent rear wheel locking?

Hope this helps explain the difference, modern cars have a valve to achieve this.

Hi,

I don't think so. The bigger pipe is (I think) to facilitate flow of fluid from reservoir to master cylinder ..... there is only a few inches of "head".

602