4 replies to this topic

[poreilly]

Hi,

My clutch master cylinder is leaking. I removed it from the car but apart from removing a circlip which frees the linkage I can't see how to take it apart. I bought a repair kit but am now wondering whether I should just have bought a new master cylinder.

Thanks for any advice of how to take it apart or whether just to go for a new master cylinder.

Paul.

[chrisandsarah]

Not sure, never done it myself. I had a quick look in one of my mini resto books.. I found a diagram of a brake master exploded, they pretty much do the same thing.. not sure if it will help

[dklawson]

If you have removed the MC from the car, by all means go ahead and take it apart. You have nothing to loose.

As shown in the picture link above, beneath the rubber boot the pushrod passes through you will find a circlip (item #4). Remove that and the pushrod can be removed. In some cases the parts are loose enough that the spring in the MC will push the other parts out. If that doesn't happen for you, wrap the open end of the MC (where the pushrod was removed) with a towel. Then apply compressed air to the port where the brake pipe attached. The internals should be blown out into the towel.

With the internals removed, wash the inside of the MC cylinder bore and blow dry with compressed air. Use an inspection light to examine the bore. If you find any pitting of the bore, buy a new MC. If there are no pits, you can buy a rebuild kit and fit new seals. The kit should include instructions and pictures to walk you through how to install the new seals.

[poreilly]

Thanks for the advice. I got it apart (a few gentle taps on the housing did the trick) but the MC looks beyond repair).

Thanks again,
Paul.

[chrisandsarah]

Pics? Not seen inside one before