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Braking on a '71



 
 
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  #1  
Old September 28th 12, 04:47 PM posted to rec.autos.makers.vw.aircooled
[email protected]
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Posts: 2
Default Braking on a '71

Hi all-

You've helped me with some strange stuff in the past, hopefully you can provide some insight as to what's going on with my '71 supervert...

Recently, the brakes have developed an issue where every other time I push the pedal, it goes right to the floor, as if I'm low on fluid or there's air in the lines. If I give it just one pump, it feels normal..even if there's miles and miles between the 'right to the floor' and the 'normal' pedal travel.

There's plenty of fluid in the tank and there don't appear to be any leaks.

Thoughts?
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  #2  
Old September 29th 12, 05:00 AM posted to rec.autos.makers.vw.aircooled
John[_28_]
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Posts: 359
Default Braking on a '71

It,d be a two circuit master cylinder that age. Even if there was air in one
circuit it shouldn,t go all the way to floor. Sound for all the world as if
there is air in both circuits. Can you give it a good bleed?.
> wrote in message
...
Hi all-

You've helped me with some strange stuff in the past, hopefully you can
provide some insight as to what's going on with my '71 supervert...

Recently, the brakes have developed an issue where every other time I push
the pedal, it goes right to the floor, as if I'm low on fluid or there's air
in the lines. If I give it just one pump, it feels normal..even if there's
miles and miles between the 'right to the floor' and the 'normal' pedal
travel.

There's plenty of fluid in the tank and there don't appear to be any leaks.

Thoughts?


  #3  
Old September 29th 12, 02:31 PM posted to rec.autos.makers.vw.aircooled
Jan Andersson[_4_]
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Posts: 467
Default Braking on a '71

The master cylinder may leak internally, due to rust or a piece of dirt
intermittently getting wedged between a seal and the bore. No fluid
loss, but no pressure.

jan

On 9/29/2012 12:00 AM, John wrote:
> It,d be a two circuit master cylinder that age. Even if there was air in one
> circuit it shouldn,t go all the way to floor. Sound for all the world as if
> there is air in both circuits. Can you give it a good bleed?.
> > wrote in message
> ...
> Hi all-
>
> You've helped me with some strange stuff in the past, hopefully you can
> provide some insight as to what's going on with my '71 supervert...
>
> Recently, the brakes have developed an issue where every other time I push
> the pedal, it goes right to the floor, as if I'm low on fluid or there's air
> in the lines. If I give it just one pump, it feels normal..even if there's
> miles and miles between the 'right to the floor' and the 'normal' pedal
> travel.
>
> There's plenty of fluid in the tank and there don't appear to be any leaks.
>
> Thoughts?
>
>


 




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