My 180 pulsar's front disc brake sounds different while braking whereas there should not be any sound... even i have changed and replaced my brake shoes it sounds again while i hit the brakes urgently....... this happened when i replaced a new brake shoes... can any one tell me what to do?

Top the battery up (if it is an liquid acid type) & or recharge it, or try another battery if you can, you may need to replace your battery, the noise that happens when using your front brake could be caused by a warped/bent disc or it could be that your brake pads are worn and the metal part of the pads are rubbing on the disc, take the disc off and place it on a mirror to check that it is not warped, also take the brake pads out and also check the caliper is not loose, give it a good service as 75% of braking should come from the front brake, if it dont work correct you might have an accident that you could avoid by having you bike serviced by somebody who knows what they are doing, Get it sorted & Ride Safe !!

Check your charging system. Charg the battery the noises should go away for a while.

sounds like a bent disk but make sure all of the holes in ur brake fluid box on haddle bars are open and clean

brake oil may be low
mechanism on disc may need to be replaced

Either you master cylider went out, or your brake pads int the front are gone (you'll hear loud screeching, metal to metal) or, if this sound is not present, you may have blown a brake line next to one of the front tires, or the metal line that runs to the rear has a hole in it. This is caused by rocks hitting it while driving, or accidentally running over curbs etc.

Prices for complete repair services vary at different locations, however, to have all four brakes replaced (front and back), and have the master cylinder, brake lines checked, your looking at a couple hundred (or less) in parts and labor, depending on what needs replaced.

It's best to have a licened (certified) mechanic take a look at it for a true diagnosis.

Please, let me know if you need further assistance.

carsandcomps,

Guru, Premium Expert @ Fixya.com

The high pitch sound may come from the brake pads as metal parts hit the disc to signal the owner that it needs change. The metal parts gets exposed when the pads have worn out. The brake also has a hub to cover the disc. See if the metal plate is hitting it but this issue would appear when the wheels are in motion. Check if it is the belts, have the tension checked out. Other than that the bearings are the other items on your wheel that could cause a high pitched sound when you car is in motion.