A200 Hydraulic pump leak, and servo issues

[Alex Kowalski]

Geraint wrote:

>I have a dribble from one of the caps (that require
>the modified 'drag link tool' to remove)  on the front part of my
>hydralic pump.

Common problem.

>I have a rebuild kit that came with the car. should
>that tell me something?

Only that it's a common problem ;)

>my questions are:
>1. is it worth replacing the o rings under only one of
>the caps, or does a leak there suggest that the whole pump needs an
>overhaul so doing one is a waste of time?
>2. do the mechanical parts of the pump fail or is it
>generally just the seals?

There's a very good discussion of this on Chris Miller's website:

http://members.aol.com/c1j1miller/index.html

His repair index is a treasure trove. In particular, he has good discussion
of rebuilding the pump -- see Section 48, Steering on this page:

http://members.aol.com/c1j1miller/repair.html

Note in particular the discussion of how the pump goes together and the
necessity of ensuring that if you do disassemble it, the mating surfaces are
not warped when you put it back together!  It's not an incredibly robust
unit, as everyone who has one of these babies knows!  ;)

Let us know how the servo swap goes.

HTH,
Alex Kowalski
'87 5KCSTQ
'86 5KCSTQ