squeelin brakes

hello i have a 1985vf500 the front disk brakes squeel alot when im useing the brakes like very loud and i think theres somthing wrong i put new front brake pads hoping that it will fix the problem but it didnt they still skeec i think i might need new disks can any one tell me whats going on with them.

 

Behind the pads there are these little spring plates. I think they are supposed to prevent squeal. Are they missing? Are they installed correctly?

 

when i changed the brakes there were no springs ust the brake pistons

 

Look at part #8. According to the fiche the part is called SPRING, PAD and the part number is 45108-MA3-006. (Note my fiche is kinda old, so the part number may have been superseded.)

Another part that invariably needs attention would be the slider, this is part #11 on the fiche, Honda calls it a SLEEVE. This thing should move very easily, but if there were 100 babyceptors in the parking lot, and you inspected their brakes, 90 of them would have stuck slider sleeves. Remember these bikes are 20+ years old and this is a maintenance item that almost no one bothers to stay on top of. You may need a big hammer to brake this slider loose. When you pull it out it should be shiny steel, but chances are it'll look more like a piece of rock. If you can't make it smooth again, then replace it. Also replace the rubber seals if they are damaged. These are all cheap parts.

Also look at the pistons. When you replaced the pads, you probably had to push the pistons back a little for them to fit, right? If you have the bleed screws open, you should be able to easily push the pistons back with your fingers, but I bet you can't. Just one stuck piston will cause all kinds of trouble. Use hydraulic pressure to force the pistons out all the way. (If/when one piston pushes out and the other is stuck, use a C-clamp to lock the moving piston in so it can't pop out until the stuck one moves and is ready to come out with it.) Clean them, replace them if they're too corroded to clean, replace any damaged seals, and reassemble them carefully.

But I don't think the squealing is a sign of needing new discs. If the brakes were pulsing, yes, discs. And if you measured them and they're too worn down and thin, then yes, discs. But squealing? No, I think that's a brake pad hitting the disc a little cocked, or not releasing quite right.

 

hmm the brakes are working though its just skweeking all the time almost as if they are rubbin not moving far enof back to clear the disk sorta thing i just replaced the seals inside the calipers but i'll have a look at this part your talking about

 

Aside from the things previously mentioned in this thread, you may want to remove the pads and sand them down a bit if they perhaps were contaminated upon insertion, and they have glazed over. Otherwise, sometimes a simple change of pad material can make the squealing go away as the pad/disc material compatability is often an uncertainty. Maybe try organic pads if you have semi-metalic pads installed, or vise-versa.
There are also spray on "Anti-Squeal" compounds available at auto parts stores that are applied to the steel back of the pads to isolate them from the caliper pistons.

 

alright i have tryed what you suggested but they still sqeek i sanded them down maby half a milimiter still sqeekin