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Author Topic: brakes sticking  (Read 1556 times)

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richy08

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brakes sticking
« on: 30 June 2009, 20:17:59 »

i changed my brakes sunday they were fine but no it think they a sticking i let go the peddel on a hill in gear and it wont roll foward like it should and the disks are hot to touch very i found out the hard way ouch :y :y
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richy08

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Re: brakes sticking
« Reply #1 on: 30 June 2009, 20:23:09 »

sorr to add any ideas how to fix them one thing after another with this thing :y
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Ghost

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Re: brakes sticking
« Reply #2 on: 30 June 2009, 22:35:09 »

Did you clean the callipers and pistons as you changed the brakes? it might be dirt on the pistons.
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jimmas

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Re: brakes sticking
« Reply #3 on: 30 June 2009, 22:42:07 »

possible caliper piston or pads very tight in the caliper carrier
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al brown

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Re: brakes sticking
« Reply #4 on: 30 June 2009, 23:01:36 »

How easy did the pads fit into the carrier? Are they genuine Vx or pattern. Either way could be build up of crud on carrier or poorly fitting pads. Pads should be snug in carrier without being overly tight to fit.
Al
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scottyt

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Re: brakes sticking
« Reply #5 on: 30 June 2009, 23:07:52 »

try cleaning and greasing the caliper sliders they are prone to ceasing on most cars use copper grease tho it lasts longer with the heat build up
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eddie

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Re: brakes sticking
« Reply #6 on: 30 June 2009, 23:20:36 »

Did you push the pistons all the way back,they should end up flush with the caliper.
Loosen the reservoir cap before doing this ! Or if you can get a one way bleeder attach it to the bleed nipple,slacken of the nipple then push piston back.

eddie
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Diamond Black Geezer

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Re: brakes sticking
« Reply #7 on: 01 July 2009, 01:06:18 »

Yep, that's it. Can't add anything to the sound advice already given.

Fairly standard solution, really. If it's sticking....loosen it!! Get them calipers moving freely, and get them pads snug, without being loose/rattly. As said, coppergrease is the thing.

Thing is with brakes and other 'oilybits' once you've had them off once, you should always be thinking of the next guy that'll be working on them...and that could be you!

Have an afternoon in the sun tinkering, you'll get them working good as new sooner than you think.
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feeutfo

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Re: brakes sticking
« Reply #8 on: 01 July 2009, 02:55:44 »

Right. All those that think its a good idea to use copper grease on your caliper sliders, please supply one piece of evidence that says this is the correct product to use. Its not. Ring round and see whats specified. Specified mind, not the hear say of your local mech or some fashionable hear say on a forum, of which there are many .

 Not one manufacturer uses copper slip as a lubricant on their brakes calipers NOT ONE. Why? IT IS NOT A LUBRICANT and especially has no heat resistant lubrication properties what so ever. Read the back of the tin or tube, it makes no reference to lubrication.

I have personally seen numerous brake calipers seized solid due to this crap smeared all over the sliders which dry out and seize. Then as the pads wear and the piston pushes out to take up that wear, the sliders cant centre on the disc, you loose half your brakes power as the opposite pad does not touch the disc because the caliper cant centre on the disc, and they eventually bind on solid. Some have needed the sliders pressing out they are that seized.

To the op. Chock the relevant wheels. Jack each wheel in turn and spin by hand. They should spin freely, possibly with a light shooshing as the pad loosely brushes the disk. If not your breaks on that wheel are binding. Remove the wheel. You should be able to push the piston back in slowly by hand when the caliper is still bolted on. Push the caliper over to the inboard side (it will be stiff and move slowly with a good firm grip, and you will need the reservoir cap off to allow the fluid back up. Watch it does not over flow ) once the pistons back in the caliper sliders should move freely on the pins.

If not you need to remove your brake calipers and check the rubber boots on the sliders and piston are still sealed and not split perished ripped letting in water and corrosion, they should be seated correctly. If the sliders are seized push the rubber boot back and pray with wd40 or plus gas to free them off. Seperate the carrier from the piston and clean the brass slider pins. The correct heat resistant "grease" should be used on the sliders. Re assemble and check.

 If the piston seals to caliper see corrosion on the piston inside the piston boot, it will drag the dust and or fluid seals out or damage them.  This can stop the piston retreating as it should when you take your foot off the pedal.

See how you go. :-)
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richy08

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Re: brakes sticking
« Reply #9 on: 01 July 2009, 19:44:20 »

i think well i no i never opened the fluid bottle would that cause it as for grease i used that and they are snug fit how do i stopthem from sticking thanks guys  :y :y
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