Brake pedal is hard!!?? - Defender Source
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  #1  
Old January 24th, 2005, 03:40 AM
Vadim
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Brake pedal is hard!!??

Hi.Somehow my brake pedal act very strange lately .It is become very hard to push and it almost no brakes at all I thinking about problem with vacum ,but may be something else Any advise why is doing so?
Thank you in advance.
Vadim
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  #2  
Old January 24th, 2005, 10:21 AM
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Blocked line or a bad MC?
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Old January 24th, 2005, 11:05 AM
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I'm more thinking that the booster went, or the vacuum line to it is no good.

Normally if the master goes, the pedal gets all squishy.

-Hans
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  #4  
Old January 24th, 2005, 12:33 PM
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How I check booster?
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Old January 24th, 2005, 11:08 PM
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Have you considered bleeding the brake system first? Just a thought.
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Old January 25th, 2005, 12:52 AM
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The booster or the valve is bad. Or the line popped off etc.

This is a booster/vacuum issue.

The only other thing would be a seized bearing on the shaft but this is extremely unlikley.
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Old January 25th, 2005, 05:14 AM
Vadim
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So you think it is booster? How I can check it? Somehow I can hear when I step on the brakes,how mine rear brakes it's working,but not front brakes.I think this is weird .
Thank you
Vadim
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Old January 25th, 2005, 07:58 AM
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So if you press real hard do the rears lock up and the fronts do nothing? Maybe the proprtioning valve (not sure what it is called but it sends break pressure front and rear so that you yuo aply more to the front then rear) is broken.
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Old January 25th, 2005, 08:36 AM
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Vadim,

I send you an e-mail with, I hope, the right info.
copie's from a Haynes manual how to check the booster.
If you have only brakes on the rear, earlier models have a so called PDWA valve; if there is a leak in the front part of the sytems, a safety valve blocks the part automatically. I'am not sure if youre truck has this part in it.

cheers
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  #10  
Old January 25th, 2005, 01:09 PM
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Thank you to everybody,I guess I wil spend my entire weekend under car )Better than rearend somebody on hwy
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