nmauduit wrote:Mazzini wrote:I guess the M/C is to blame. I had it apart before I fitted it, but put it back together the same way. The only thing I did was remove the needle shaped bolt that stops the piston from going back past that point.
Any ideas where I am going wrong?
I understand you don't have a brake booster.
I'm not sure I get this : are you saying that you just removed the bolt it then put it back (one usually needs to push on the rod to reinstall the stop nut back because of the internal spring), or did you remove the piston then reinstall everything? There is a small hole that interconnects the fluid tank with the MC pressure area, and the motion of the piston opens or closes that opening when it moves (normally open at rest position which also enables fluid to get back into the braking circuit, then when one presses the pedal the seals passes over the small hole and effectively seals the braking circuit from the spare fluid circuit). If the piston resting position is not adequate it is possible to get pressure build up inthe circuit (it is also possibe to get similar self locking behavior if some debris are back clogging the small hole, e.g. brake seal edge that would have been cut off when installing the piston dry against a sharp internal edge).
Thank you for your response.
You're right, I don't have a servo.
A poster recommended that I remove the bolt, which I did, I replaced it with a blanking plug/bolt just to make the seal. I guess this could be the problem?
I changed the brake fluid when I bled the system, but it looks like there is come sort of contaminate in it, I'll drain it and clean the M/C out before flushing it though.