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post #1 of 25 (permalink) Old 21st July 2012 Thread Starter
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front brake pad replacement

hello, i recently replaced the front brake pads on my 56 scenic but cannot seem to get a solid brake pedal. it just pushes all the way to the floor. i have tried bleeding the brakes. there does not seem to be any air in the system. also the master cyclinder needs topped up when i push the pedal so there must be a leak somewhere - but where as i cant see any brake fluid dripping onto the road.
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front brake pad replacement Brakes/Hubs DadBJ 24 4316 21st July 2012 06:48 AM
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post #2 of 25 (permalink) Old 21st July 2012
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Re: front brake pad replacement

There's just a chance that the rubber seal in the master cylinder has flipped. It's possible for this to happen if you pushed the piston back to get the new pad in without opening the disc bleed point. In other words, always open the bleed point before pushing the disc piston back to allow the fitting of new pad.
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post #3 of 25 (permalink) Old 21st July 2012
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Re: front brake pad replacement

something i never do !! changed hundreds of pads.Take cap off, top up point and wind/push in slowly.forcing it can damage seals or force iar in system.
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post #4 of 25 (permalink) Old 21st July 2012
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Re: front brake pad replacement

Never opened a bleed screw to put new pads in, ever. If you do that and you don't push the pad in one full stroke, there's a chance that air will enter the system.
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post #5 of 25 (permalink) Old 21st July 2012
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Re: front brake pad replacement

On cars with ABS it is recommended to open a bleed screw when retracting a caliper piston. The reason being the valves in the ABS control unit don't always take kindly to having fluid forced in the wrong direction.

I have came across this problem twice - once on a Honda Civic and once on a Puegot. After a lot of faffing around the Honda eventually was sorted but the Pug need a replacment ABS unit. The chances of this occuring may be low but why take the risk.
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brake , pad , replacement

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