Sqeaking noise

I have already done a thread in the past about this so this one is an updated version. I have two problems and I dont know if thier related or not. The first is a sqeaking noise from about the front of the bike. It could also be under me while seated. I just rebuilt the brakes so its not them. I checked the steering tube (forget what its called) and also check the wheel bearings and they seem fine with no extra play. Im wondering what could be squeking? Its pretty intermitent and comes and goes randomly but lonly while Im moving. The second and possible related or unrelated is that the bike randomly dies while moving. It always immidetly restarts but i need to find the problem. I have replaced the fuse box so thats not it. Im going to start checking grounds and stuff but anyone have any other ideas about either problem or if they could be related? thanks!

 

After rebuilding my front brakes, I have a similar squeak after applying and releasing the brakes, for a few turns. Does it go away when you apply the front brakes? If so, the caliper(s) may not quite free enough to move the pads away from the rotor quickly enough. In my case, the brakes are OK and work fine but the caliper will likely require a rebuild to prevent it sticking on.

 

I have that issue, rebuilding the brakes now. I am having trouble taking the piston out of the caliper. Any way to do this? It seems seized and is rusty inside.

 

Assemble the system and fill with brake fluid. Remove pads from offending caliper. Insert piece of plywood (3/8" is a good start) to catch piston. Operate the brake lever several times. You should see the piston work it's way out with each stroke. Once it is resting on the plywood, you will need to remove it and then face the caliper towards the plywood laying on the floor. DO NOT place anything you value between the piston and the plywood. Continue pumping untill the piston is forced out of the bore. Thats about all there is too it unless it is really rusted into place, in which case you are hosed an will need to have a shop pull them and order up new pistons. Best of luck Gene.

 

Search: "Chamfer"

Buy an aerosol can of Disc Brake Kleen.
Spray the Front Brake Caliper and especially the Brake Pads and surrounding area very thoroughly

If the spraying has any affect the noise is Brake Pad Squeal ... which I highly suspect.

Very easily eliminated.

Remove the Front Pads and ... "Chamfer" ... the sharp Leading Edges on the Pads away.
You simply round-off the sharp Right-Angle which contacts the Brake Rotor at 90-Degrees.
With the sharp edge eliminated from the Chamfering ... the Pad and Rotor will no longer have the condition that causes them to squeal.

Remove the Point of the Right Angle on the Pads ... all the way around.
Take care not to inhale the dust created.
Some Pads still contain Asbestos which is a known Carcinogen.