11 replies to this topic

[craigr91]

On way to work I pressed pedal and heard an almighty click and then pedal vanished. After avoiding a car and getting it to stop I played with pedal, I lifted pedal and dropped ot a few times in which I could then use my foot to pump it and after 10-20 pumps they came back, I ditched car and off to work, any ideas or anyone in the NW want do it? Cheers

[craigr91]

What confuses be is that there is pressure after pumping but yet there was a loud click, couldn't possible be something go with rear drums as hand take didn't seem as effective........

[Cooperman]

Not enough info really. It could be one of many things.
Are the rear slave cylinders securely in place?
Has the brake fluid level gone down?
Is there brake fluid dripping onto the carpet down the brake pedal?
Are there any leaks from the flexible hoses front or rear?
Can you see any fluid weeping from any hydraulic pipe joints or from the pressure relief valve?
Have a good check of all these things then come back on here and let us know.

[craigr91]

Didn't think of checkin pedal for fluid but because of that I found the problem, the split pin broke and pin came out..... Cheers

[tractor]

sounds like a lucky escape

replace the split pin with an "R" clip they're much easier to remove if you need to in the future

Trac

[Cooperman]

Unlikely the split pin was fitted, or that it was fitted incorrectly. I've never heard of that particular pin failing as there is no shear loading on it when correctly fitted.

[tiger99]

Yes, it sounds like the person who fitted the pin did not have the patience to do it properly in the confined space, and either forgot to open it out, or maybe even re-used the old one, which broke, as they do, when opened out again. I have seen split pins in other places fail for the same reason. Normal operational loads certainly could not damage the pin.

It is the very worst place on a Mini for working access, which does unfortunately encourage people to cut corners.

[craigr91]

very lucky and i cant say wether or not it was put in to be honest, but when it comes to things like that, i HAVE to be sure they are fine, so im thinking of replaing it with a nut and bolt? will this be fine using a nyloc nut too?

Cheers

[Cooperman]

You don't want or need a nut and bolt. All the Minis I've ever seen have used either a split pin (properly installed), or a suitable 'R-Pin'. There is no end load, only shear load on the ground steel pin. A bolt may not have the correct specification of steel or of ground surface finish.
Installed correctly ythe pin is exactly correct for the application. There should be a washer between fork arm and split pin.

[craigr91]

can i buy these units new? as i couldnt find any part of the setup around anywere......

Cheers

[Ethel]

http://www.minispare...|Back to search

Bizarre that pumping the pedal would make a difference

[craigr91]

Thankyou