Old Merecedes brake problem

Honest John Back Room » Technical matters
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Sat 29 Jul 2006 09:25
Old Merecedes brake problem - pullgees
Itsa 1981 280 auto V6 petrol. The problem is that the brake pedel travels almost to the floor at over 8000 rpm. The servo and master cylinder have been changed to no avail. It has been bled and there is plenty of meat on the shoes and pads. I was wondering if there is some regulator that determines brake power at high speed. It is in the hands of a classic Mercedes mechanic at the moment and he hasn't been able to trace the fault so far.
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Sat 29 Jul 2006 09:35
Old Merecedes brake problem - bell boy
is there a one way valve fitted in the servo to plenum chamber pipe?
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Sat 29 Jul 2006 12:08
Old Merecedes brake problem - Roger Jones
A V6 in 1981? Which model?

You might try

mbclub.co.uk/forums/

for people with MB experience.

There's also

www.mercedes-benzownersclub.co.uk/

but you will have to become a member.
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Sat 29 Jul 2006 12:09
Old Merecedes brake problem - Roger Jones
P.S. 8000 rpm?
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Sat 29 Jul 2006 12:12
Old Merecedes brake problem - bell boy
P.S. 8000 rpm?


yep i missed that too ,maybe catching flying conrods may be more important at this rpm?
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Sun 30 Jul 2006 12:57
Old Merecedes brake problem - pullgees
Not 8000 about 4000rpm and itsa 280SE. I don't know what the plenum whatsit is but I'll mention it to the garage and try those other forums.
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Sun 30 Jul 2006 17:31
Old Merecedes brake problem - Roger Jones
It's a straight six engine then, not a V6?
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