front motorcycle caliper sticking/rubbing?

Question

hello i just bought a suzuki gz 250 for a starter bike and i noticed when i move the bike i can hear a grinding sound coming from the front brakes even when im not applying any brakes now when i do apply brakes is sounds like metal on metal obvously i need new pads already on there way but why is the caliper sticking when there isnt any break beeing applyed i checked the fluid level and quilty and there dosnt seem to be anything wrong in that area will the new pads fix these probs and if not what should i do thank you

its a 2003 suzuki gz250 250cc

Answer 1

sounds like your pistons on the brake pads need to be reset. Do to the fact that your brake pads are gone your piston has worked its way out and has caused the vacume in the lines to decrease. your problem isnt major. It will remedy itself once you install the new brake pads properly. In case you dont know ill list the steps.

1. take the calipers off of the forks.
2. ope the master cylinder at top of the handle bars by unscrewing the bolts and taking the cap off.
3. with a c-clamp compress the brake caliper shoe all the way in. ( use the old brake pad of a small piece of wood. this way you dont damage the caliper.)
4 compress it all the way in. to where it is flush with the caliper.
5 install the new brake pads.
6. put caliper back on where it belongs and do the same steps to the other one.
7 once both calipers have been reinstalled then put the cap back onto the master cylinder.

Ps while doing this check your fluid and you may want to blead your lines. always helps to do the entire brake system while you are working on it.

Answer 2

Motorcycle Caliper

Answer 3

Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer.
The calipers may need to be rebuilt.
Gunk from bad brake fluid builds up under the seals and squeeze against the piston, preventing it from returning.
Tap the caliper towards the rotor (disk) with a soft hammer, or the heel of your foot.
It will push the piston back into the caliper.
If that temporally clears up the noise, then the caliper should be repaired.
That's one reason to change the brake fluid once a year.

Answer 4

Ride it around the block, without applying the front brake, and then check the rotor for excessive heat. If the pads are dragging they rotor will heat from the friction and you may need the caliper rebuilt with new seals. Not a very expensive proposition.

Sometimes the fluid return hole in the caliper gets clogged and needs cleaned out.

Spend the money. The front brake is where 75% of your stopping power is.

Answer 5

I in simple terms had the comparable issue with my rear brakes. It demands a re-build. That includes removing the brake pistons, and changing a pair of o-ring seals. in case you do it your self the entire value is under $50, based on what share seal are required. a sparkling caliper expenditures a pair hundred money.

Answer 6

i had the same problem with my 85 gpz550. you should release the bleeder nut,(both of them if it is a double disc system) without squeezing the brake. if this frees up the brake, then the problem is most likely a collapsed brake line.