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Brake problems....
Posted: Mon Oct 17, 2005 12:07 pm
by StudentFZR
there I was blatting into London when my '87 Genesis started to get slower....and slower....hmm. Pulled over and couldn't move it at all, brake lever completely solid and worse still both front discs were blued from heat
This is the first time anything like this has happened to me...I changed all brake seals earlier this year and, even though they were a little dirty the pistons weren't seized...it was almost as if the whole circuit had hydraulically locked on
My suspicion lies with the master cylinder although why I've no idea...can anyone throw any light for me??
Thanks guys!
Dave
Posted: Mon Oct 17, 2005 12:19 pm
by dragracer1951
Sure I can
Unplug the tiny little oriface in the master cyl that is the return
Posted: Mon Oct 17, 2005 4:22 pm
by StudentFZR
Jeez....that simple....why didn't I think of that etc etc!! I stripped out one of the calipers and the pistons are fine so I think you're on to a winner there Jim - all will be revealed tomorrow when I get back into it!
Thanks mate
Dave.
Posted: Tue Oct 18, 2005 11:27 pm
by F5
Quite often the lever (maybe a replacement) doesn’t return far enough to open the return hole. While you have the lid off, clean the breather in the lid & make sure the rubber isn’t ripped.
Posted: Thu Oct 20, 2005 2:21 pm
by StudentFZR
Everything appears to be ok, but a lot of crap around the two small holes feeding the mastercylinder piston. Cleaned out and bled, check and clean all caliper pistons and rode it.....no initial bite at all
I think I've fried the pads
The silver lining is the set of 6 pots I've got ready and waiting to go on this weekend....
Dave
Posted: Thu Oct 20, 2005 3:14 pm
by dragracer1951
Dave...Take some emery to the pads and deglaze them...All should be well then
Posted: Sun Oct 23, 2005 6:42 am
by StudentFZR
Hey Jim.....deglazed with a smooth file before I put them back together first time around but no joy. I've read somewhere that if you seriously overheat pads the resin binder deteriorates badly and irreversibly affects them (?)
Anyhoo....put the 6 pots on yesterday and they're shaping up nicely, need new pads though (Gold Fren at the moment - weird feel), thinking of trying Ferodo Platinums rather then EBC HH....will let the 'Hood know how I get on
Thanks for all your help....
Dave
linage
Posted: Tue Oct 25, 2005 6:21 pm
by ChuckD
Are you running stock Lines?
Posted: Wed Oct 26, 2005 1:46 pm
by StudentFZR
No Chuck....stainless goodridge 3 line set up with YZF750 6 pots now, but it seems to be a pig to bleed even using a mityvac