How can I fix a siezed brake cylinder?????

i have a hyundai coupe sports car and I think the front off side brake cylinder is siezed. when I driving it really makes a deafening whining sound. can I do somethin to repaire it myself or do I need a new brake cylinder????? is it dangerous two carry on driving with this problem????? all advice greatfully accepted, thanks. :

wheel cylinders don't make a sound, but, wheel bearings make exactly the sound you describe. the beariing collapses, teh wheel cocks over some degrees and the disk rubs against the caliper puttin the brakes on.

yes its dangerous. but a new wheel bearing is 20 or so quid, and I doubt as if you could do it yourself. if you continue to drive it like this itll scrap teh wheel hub, caliper and anythng else attached. and the possibility of the wheelberring collapsing and locking the wheel hard is a scary thought I wouldnt want to entertain.

good luck.

too many years gettng dirty

a hammer ?

Cylinder seizing typically comes from rust, moisture in the brake liquid. you may want to replace the seized cylinder, and flush the complete brake system with new brake liquid.
It is dangerous as an emergency maneuver will result in random wheel locking.

There may be a rebuild kit avalible to rebuild the brake cyl. If not replace it and do not forget to bleed all your brakes. If you drive with a bad cyl you may end up with brake fade or pedal to the floor possibly causing an accident. Also check your brake lining is it in ggod shape?

the best thing is to take it to a shop but if you want to do it your self jack up the front remove the tire you will need a metric socket set I am guess in g around a 14 or 15mm and a ratchet take the top of the caliper off and push the piston back with a c clamp but be care full not to damage it it it moves with a c clamp then it isn't stuck and you most likely have other issues like a wheel bearing

Check that you have not picked up a stone and its caught between the disc and pad or caliper. Feel the wheel after a drive, is it hotter than the other side, if so it is rubbing and most likely seized. A new caliper can be obliged,

If it were "seized" it could not turn.. if its a drum brake it could be locked up.after driving for a while . .stop and feel the wheel.if it's hot you have to get the wheel off if its a drumbrake and pour some auto transmission liquid on the brakes shoes to"deglaze" them.if its a disc brake..and you may be able to see a 'groove" cutting into disc you need new pads..and if you aren't mechanical.get a friend to help.I f you're rich go to a brake <span title="shop....aaarrrgghhh.aaarggghhhh">shop....aaarrrgghhh.aaar.

How do you know that it's the brake cylinder that seized?

1. attempt driving gradually, then taking your hands off the steering wheel apply the brakes sharply. If the brake cylinder seized then the brakes won't apply on that side and the car will veer towards the side which is braking properly.

2. presuming that the steering didn't veer, then the cylinder is most likely doing its job properly. You may have some stone wedged between the disc and the pad housing. attempt driving backwards someplace safe and jerking the brakes, this could shock the stone out.

3. Does the whine happen at all speeds? attempt jacking the car up at that corner prefarably on an axle stand and turn the wheel softly ensuring the other wheels are chocked so that the car can not move . Is there a rumbling noise? then the screech is coming from your wheel bearing get it changed before the bearing collapses..

Kzin

TAKE THE WHEEL OFF, MOUNTS TO CALIPER, ON THE BACK SIDE OF CALIPER THE BLEEDER VALVE OPEN IT, NOW TAKE A six twelve INCH C CLAMP OR HAMMER WOOD END AND DRAW IT BACK. NOW AS YOU CHECK, WATCH THE CYLINDER IT SHOULD GO BACK WITH SOME EFFORT .
NOW IF IT does not, TAKE THE LINE TO CALIPER OFF
it's A FLEX TYPE LINE, HAVE SOMEONE PUSH THE BRAKE PEDAL AS YOU WATCH liquid FLOW.
note : as you attempt to move caliper back take the brake reservoir cap off
YES IF IT isn't FIXED you'll WRECK LOST BRAKES IN FRONT IS WORST THAN LOSING IN REAR
WHEN YOU BRAKE it'll PULL TO THE SIDE that's GRABBING LEFT OR RIGHT

Hit it with a trout

To check if it's a brake cylinder problem, jack up the car so that the wheel/tyre are off the floor. check to see if the wheel is rotating freely.

You may want to compare it to the other side as they should really both rotate with the same ease.

If it's a caliper that seized then this may stop your brake pads from lifting off the brake disc when no pressure is applied. This constant contact with the disc can because the brake pads to wear down quickly and also because heat build up in the disc causing it to warp.

So if it left to get worse, then you'll most likely have to replace the discs and pads also.

There are brake cylinder fix kits available for most cars, so you may want to find something for the Hyundai.
The kit will include substitute rubber seals, 'o' rings and grease, allowing you to strip down the caliper/cylider, clean up all the surfaces to get rid of any debris/rust, lubricating it which also protects it from debris etc. and rebuilding it with all new parts.

You will also have to bleed the brakes and get the air out of the system that may entered throughout your work. Get yourself a Haynes manual to assist you with this job.

Carl carbasics.co.uk

I could have thought that the best answer could be to replace it with a new one