hi everyone We finally got the jets and air box back in and the nine runs sweet.... Except for thing now. We put a new brake master cylinder in and new brake pads for some reason when I go for a ride the front brakes start to come one and the bike struggles so I have to pull over and bleed the front cylinder not the brake caliber to one on the front from facing the wheel. Once I do this its find no worries. I left the nine for 1 wk went for a ride and it did it again. We have checked the cylinder everything is put it on should I disconnect the lead that goes from the brake to the front cylinder will that stop it I have attached s picture
Mate might be worth going back over the seals of the reservoir and make sure the seal in the bottom isnt blocked. I am no expert and will never claim to be, it just sounds like the fluid when using the brake is being pushed into the line but cant flow back when the brake caliper pistons try to retract releasing the brake.
Agree with Aaron. Brakes don't come on for no reason. Sounds like the piston isn't retracting after the brake is let off. Did you rebuild the brake caliper? I find it's best to push the brake piston all the way in when rebuilding; if you squeeze the brake and then let it off you should see the piston move out and then back in immediately. If it doesn't you have a problem. Not sure bleeding is the right solution as this is normally done to expel air in the brake line (spongy brakes). I'm no expert, but it I think Aaron is on the right track as it could be seals either in the piston casing or the hydraulic fluid reservoir.
We disconnected the connection on the front side of the fork and just left one brake line to the calliper and everything works fine
Heres info on the anti dive unit ..... What is antidive, and what's it for? "Suzuki's anti-dive system, developed from the feedback of racing technology, is now equipped on many of Suzuki's 1982 models. The new system is attached to the outer tube of the front fork. The brake line of the front brakes master cylinder leading to the caliper is connected by a hose to the antidive device. When the master cylinder's hydraulic line functions to brake the front wheel, it simultaneously operates the anti-dive device's plunger, which regulates and limits the flow of oil in the front fork. This reduces the compression of the front fork, which also reduces the extension of the rear shock absorber. Hence, the device serves to counteract the change in the motorcycle's attitude during braking." (from the Suzuki GSX 750/1000/1100 Supplementary Service Manual, Sept. 1981, p.6) http://2fiftycc.com/index.php?threads/1985-gsx250-pub-cafe-racer-project.1620/page-3#post-11831
That part is the anti dive mechanism isnt it ? maybe the seals/?valves? in that are shot and the forks are putting pressure into the brake line Just a guess though mine doesnt have that Edit: yup looks like Grey beat me to it
Thanks everyone have a new challenge for you, whilst riding the beast in the w/end it make a bang and back fired. We have got it going again however it won't charge the battery. I think it's either the rectifier or the alternator how do I determined which one and where can I get a replacement
are your levers after market? if so it might be a case that there isnt as much play/gap on the inside end of the lever and when the fluid heats and the master cylinder piston pushes out there isnt enough gap and as such the brake comes on.....if that makes sense?
http://www.2fiftycc.com/index.php?threads/how-do-i-test-my-12-volt-battery-and-charging-system.1794/ http://www.2fiftycc.com/index.php?threads/howto-testing-a-motorcycle-stator.2052/ Try browsing "tech tips" section of the forum
