[Vwdiesel] 90 Jetta brakes

[Nate Wall]

Take a peek inside the brake booster for fluid by removing the master culinder
nuts. I did this once, and think I ended up removing the brake lines too, to
enable me to pull it out anough to see. But, FIRST check for leaks at the load
sensing proportioning valve next to the rear axle beam., since you may forego
disconnecting the master cylinder if you find a leak at the valve.

--Nate

--Nate

Lee Hillsgrove wrote:

> During the last week, the brake pedal on my '90 Jetta has slowly been
> sinking to the floor as I stop the car.   New it travels nearly to the
> floor.   When I pump them, the car stops fine.
>
> I examined both front and back for leaks and bled them as well.  No air
> showed up.  Both front rotor and pads as well as rear shoes and drums were
> replaced last February, and show normal wear.  Any ideas?
>
>   Sounds like the master cylinder is leaking internally. You will need to
> either rebuild your existing master cylinder or get a replacement unit.
> Don't forget to bench bleed the M/C before reinstalling it!
>
>   Lee
>   Oo-v-oO
>   PP-ASEL
>   KB1GNI
>
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