back brakes

beast rider · Could Be A Chat Bot Joined: 24 Feb 2005 Karma :

Hi was just wondering if anyone had any suggestions?

I fitted braided brake lines front and back to my cb750 a few weeks ago and all was well, untill i noticed that the brakes were binding.

So i stripped them down and cleaned all the road crap off the pistons, after i did that the back brakes have completely gone to sh*t!!!!!!

I've bled them through about 5 times now and there is no air in the system or leaks from anywhere, but i just can't get them to feel or work any better.

I have no idea what to do now, any ideas???

Fire_Eyes · Crazy Courier Joined: 07 Oct 2004 Karma :

I never installed braided lines so I wouldn't really know how long it takes to put them. But I think a smart thing to do would be to put the stock lines and see if you have the same problem, then you would know if it's the new lines or something to do with the calipers or disk.
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Kawasaki ZZR 400 | K5 GSX-R 600

Frost · World Chat Champion Joined: 26 May 2004 Karma :

Make sure your banjo bolts are done up properly. pump the lever loads with the caliper off the bike and see if the pads move at all. if not you have air in there, if so then you just need to adjust your brake pedal and pump it till the pads are nearer the disc.

Deano · World Chat Champion Joined: 17 Feb 2003 Karma :

pinch the back brake disc and the run your fingers from outer edge to the centre and see if you can feel that their is some even wear in the disc if it isnt then this uneven wear is giving you pads less cantact space and throws the whole brake off and you will neeeda new disc.

DukeRed · World Chat Champion Joined: 07 Mar 2004 Karma :

Scotsman37 · World Chat Champion Joined: 17 Aug 2004 Karma :

The small pushrod with a hinge (looks like a bolt with nuts) attached to the rear brake pedal probably needs to be adjusted as that is what happened to mine not long ago. If the pushrod is not adjusted correctly then no amount of bleeding will work until this has been done.

goony · Renault 5 Driver Joined: 15 Aug 2004 Karma :

seal`s could have gone

beast rider · Could Be A Chat Bot Joined: 24 Feb 2005 Karma :

Thanks pps will take all of your knowledge into consideration, if not i'll just have to fork out for someone who knows what thier doing to have a look

BFG · Brolly Dolly Joined: 14 Feb 2005 Karma :

beast rider · Could Be A Chat Bot Joined: 24 Feb 2005 Karma :

The you can lock the back wheel but only at low speed at high speed its basically useless! the pedal travels so far that it hits the heat shield on the exhaust.

The extent of stripping down was to take the calliper off the bike, spray it with break cleaner to get all the road crap off the pistons and made sure they were moving freely, which they are!

I'm gonna go to the garage in about an hour and try a few of the ideas that have been posted and see what happens.