Question about Harley Davidson FXD Dyna Super Glide Motorcycles

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Brakes rubbing in front causing warped rotor, how do I stop this from happening ? it has a late model wide glide front end 11 1/2 " rotor

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Disc brakes are going to rub, that's the way they are designed. They have no springs or anything to retract the pads once the piston pushes them out. This is the way they keep the rotor clean and dry and provide superior braking in wet weather. If the brakes drag too heavily on the rotor, it could be because the caliper is not "floating" as it should on the mounting pins. The caliper should slide back and forth on the two mounting pins. Take them out and put synthetic brake grease on them and make sure the caliper is loose. Also, make sure the brake hose is good. The brake hose can become internally detached. When it does this, it will allow the brake fluid to pass when you apply the brakes because of the extremely high pressure. But, It will not allow all the pressure to bleed off the caliper when you release the lever and will hold the pads too tightly against the rotor. To test, apply the brakes and then let off. Then, open the brake bleeder valve and see if the brake fluid makes a short squirt out of it. Air in the brakes will cause the same problem. Bleed the brakes and see if that helps.

Good Luck
Steve

Posted on May 19, 2011

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