Vehicle & Technical > Discovery

Brake problem

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Disco_Stu:
Hi all, wondered if you could offer any advice.

A mate of mine has a V8 Disco 1. His troubles started off with a spongy pedal, he rectified it with a new servo, master cylinder, discs and pads all round.

He now tells me that he cant even drive half a mile before his brakes start to bind on and he has to stop or return home for fear of getting stranded. He's been at this for four weeks now and reckons he is now on his 4th Britpart master cylinder.

I asked him all the questions I felt were the obvious ones but he seems to have looked at all the things I would have checked too.

What do you guys think could be causing this? I'll not sully the water by telling you all the things I asked him to check, kind of want a fresh take on it then we can start from the beginnig again and try to get to the bottom of the problem.

Any and all suggestions appreciated,

Stu.

J.D.:
First off, is the vehicle fitted with ABS?

Henry Webster:
If he's done discs and pads, I'd be having a good look at the calipers.  Calipers often start sticking after pads and discs are replaced because you are using more corroded/dirty parts of the piston that have been exposed for a long time!

trecfive:

--- Quote from: Disco_Stu on April 22, 2009, 13:47:56 --- He's been at this for four weeks now and reckons he is now on his 4th Britpart master cylinder.


--- End quote ---

There's your answer S**tpart. Everything Ive ever bought from Britpart fails in no time at all. I now avoid it like the plague.

J.D.:

--- Quote from: Henry Webster on April 22, 2009, 16:02:52 ---If he's done discs and pads, I'd be having a good look at the calipers.  Calipers often start sticking after pads and discs are replaced because you are using more corroded/dirty parts of the piston that have been exposed for a long time!



--- End quote ---

Thats true. Try taking the calipers off and replacing the seals and pistons. I know somewhere does a repair kit for them, or alternatively just replace all the calipers, but that is the expensive option.

Some people reccomend using WD40 or similar, but the only way I would do it is to take the callipers off and then let them dry thoroughly. You could also try wire brushing the exterior of the pistons down.

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