Jgspahn Posted September 4, 2011 Report Posted September 4, 2011 I'm trying to get my bike together over the holidays. I was going over the bike and noticed the rear brake was not bolted on. When I looked closer I noticed that the brakes didn't even operate with the brake pedal. The bike has been sitting for a really long time. It has plenty of fluid. I took off the screw on the caliper and pumped the brake, fluid came out, but it just dribbled out, no force. This is my first time with anything banshee, so im trying to give as much info as possible. I included pics of part of the pedal mechanism, I was wondering if the black rubber seal could be bad and causing air in the line. Can anyone give me some suggestions on what else to do/check?? Quote
vifferman Posted September 4, 2011 Report Posted September 4, 2011 Sounds like your rear brake master cylinder is shot. Time for a rebuild. Quote
Larry's Shee Posted September 4, 2011 Report Posted September 4, 2011 Have you actually tried bleeding them? Do you know how? Looks like the resi in the picture is empty. Quote
Jgspahn Posted September 4, 2011 Author Report Posted September 4, 2011 The rezzi is full, no I dont know how to bleed them. Its there a kit to buy to rebuild the master cylinder? Quote
Jereme6655 Posted September 4, 2011 Report Posted September 4, 2011 The rezzi is full, no I dont know how to bleed them. Its there a kit to buy to rebuild the master cylinder? Okay.....I think I understand what your problems are. When you took the "screw" out of the caliper (hoping it WAS the bleeder screw) you introduced air to the rear brake system. Air is compressable so if you step on the rear brakes they are not going to do a whole lot. What you need to do is make sure your brake resi is full then make sure that bleeder is tight. Then you are going to PUMP the brakes until the seem to get hard...then HOLD the brake pedal down while you just LOOSEN the bleeder. Fluid and air should come out from the bleeder......DO NOT LIFT OFF THE BRAKE PEDAL!!! If it starts going down then keep it mashed down. If you lift your foot its going to re-introduce air......again that's bad. With your foot still down re-tighten the bleeder screw and now you can lift off the pedal. Check your resi and add more fluid.....then keep repeating the procedure until there is no more air or bubbles coming out of the bleeder. Oh and make sure your brake.caliper is bolted up and your pads are on.....otherwise the brake can extend too far and do damage to itself... Quote
Larry's Shee Posted September 4, 2011 Report Posted September 4, 2011 (edited) yes on the kit. Thanks to Jereme on the How To. I use a small piece of clear tube to drain fluid in something as I bleed as it will take paint off. Also allows me to see air bubbles as I do it. Be aware it will take about 20+ times of pump, hold, crack, repete. Edited September 4, 2011 by Larry's Shee Quote
Jgspahn Posted September 6, 2011 Author Report Posted September 6, 2011 How much pressure should it have when i take the screw out.. now it just kinda dribbles out.. when I pump it up, should it kinda spray out? Quote
Jgspahn Posted September 7, 2011 Author Report Posted September 7, 2011 (edited) Today I took the rear caliper apart, cleaned everything, lubed up the piston, and replaced the pads. When I reassembled everything, I bled the brakes properly and now they work great. Thanks for the help!! Edited September 7, 2011 by Jgspahn Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.