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Re: brake pads too tight in front wheel
Hi welcome to fixya.com
You have a 1992 cbr250 sounds like it could be 1 of 2 things . take off pads and spin wheel ,look for bent front disk. 2nd is you may have a frozen caliper. Remove brake resivoir cap and remove caliper.sLowlY depress brake caliper piston ,it may overflow resivior,so get some onte to assist so it doesnt spill, you may just need to replace fluid,if you can get the caliper unstuck. I would recomend getting new caliper, lines,and front disk,especially if you plan to use the bike. Its a nice bike ,unfortually these parts just reach there wear limit sometimes. Hope this helps or gives you more to try to solve your problem. Thanks for your support !
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It sounds like one of the caliper pistons may be sticking. Try spraying the pistons with brake cleaner and then using a large flat bladed screwdriver compress the pistons back into the caliper. Afterward, depress the pedal/level to see if that fixed the problem. If not, you should return it to the dealer so they can find out exactly what the problem is.
Getting hand-brakes adjusted correctly is often a challenge, but they are adjustable with the right size wrenches. On the other hand, a front hand-brake on a child's one-speed bike is not necessary and is only on the bike to give it sales-appeal. If this is a one-speed bike, then it has a coaster brake (operated by pushing the pedals backwards). Actually the coaster brake is much safer than a front hand brake anyway. If the child applies the coaster brake too heavily, they will just skid. If they apply the front brake too heavily, they will go over the handlebars. If the hand brake is not interfering with the front wheel and is just not very effective, I would just leave it as-is. If the brakes rub on the tire, you should adjust them so they don't rub the tire.
It sounds like you have a piston that is not fully returned and is sticking.
Get a big flat bladed screw driver, take the wheel out and very carefully insert the screw driver into where the disc would sit and use the screw driver to try and push each brake pad back in without damaging your brake pads.
If this works go to a local bike shop and ask them for a avid brake insert for transporting your bike so this does not happen in future! :)
If it sounds like "swish-swish" noise, that is nornal for your bike. HD changed the front brakes in the 90's and the result was better stopping performance but there is that darned swishing sound. Don't worry about it, mate, there's nothing wrong with your bike.
Now, if you start to hear squealing when you pull the lever, take the bike to a shop to have the brakes pads replaced. If you feel vibration when you apply the brakes, take it to a shop immediately and have them check the wheel spokes for tightness.
same way you do on a car. remove the wheel, take the caliper unit off and replace the pads.
1) Put the bike on a milk crate or a bike jack stand
2) Take off the front wheel, the axle comes off like a large bolt
3) Remove the caliper unit from the disc, probably allen wrenches will be needed or at least metric wrenches
4) The pads will come out with a little of force and removing the retaining springs. Take note of how the springs are attached to the pads and caliper unit. You will have to re-assemble the caliper and pads and springs
5) use a C-Clamp to push the piston back into the caliper unit. After you get the caliper unit off of the bike you'll see what I mean. Probably a 6" c-Clamp will work
6) Check the disc for wear and tear. You might have to replace the disc.
7) put new pads into the caliper and attach springs. Take your time, putting the pad springs back on may be tougher than you think.
8) reassemble the caliper and the disc.
9) Put the wheel back on and squeeze the brake. Remember you used a c-clamp to push the piston all the way back into the caliper unit. Squeezing the brake will force the piston out and push the pads against the disc.
10) Time to TEST DRIVE the bike. Go slow and check for wobble or uneven braking. If needed retighten the caliper unit, just don't over tighten the caliper and strip the threads.
More than likely the wheel is out of true. There are 2 choices,
1 Buy a spoke wrench and attemp to true the wheel. You can do this by spinning the wheel to locate the spot where the wheel goes furthest to one side then tighten the spoke coming from the opposite side. Do this slowly 1/2 turn at a time. Do not over tighten the spoke. It may be necessary to loosen the other side slightly.
Alternate spokes between both sides of wobble.
2 Take bike to a good local bike shop to be tuned and have the wheels trued. Most shops offer a tune up at low cost. A well tuned bike will last a long time.
Do not bleed the brakes! If you don't have the plastic rectangular spacers that came with the brake when they were new, go to your local bike shop or get an "old" teflon kitchen spatula that's thin enough to fit but make sure its a bit thicker than your rotors and try to pry the pads apart then wiggle it until a good portion is in between the pads. Then squeeze the brake lever with the spatula is in between. This should reset the pads leaving enough clearance for your rotor to fit. NOTE: Avoid depressing the lever when the wheel is off. This will cause the pistons to travel further than usual causing both pads to come together. Hope this helps.