300Tdi brake servo

[damienb]

On a Automatic '96 disco. It's hissing (softly), and a new one is $500! Any other way out? Brakes are fine otherwise, but I'm getting tired of the reaction I get when asked about it, and I respond "don't worry about it - it's just the brakes."

[loanrangie]

Is it the servo or the vac pump ?

[damienb]

Servo

[loanrangie]

Where is the hissing coming from ? if it is leaking it usually means the diaphram has split, not sure about disco ones but i had a leak in my old rangies servo so i pulled it apart, cleaned and re assembled it and its still good after 13 years.

[damienb]

It's coming from where the pedal attaches. It doesn't look servicable, and the manual indicates it is not servicable, but I thought I would ask. Do they commonly go bad? Is a second hand unit an option?