Hydraulic Pump Question

[Tony Hoffman]

You will need a seal kit (about $13) for the pump, and a straight blade
socket for the caps. Pull and replace the o-rings under them all, and that
will take care of your leaks from there. BTDT plenty of times.

The straight blade socket I believe is called a drag link socket. You will
have to grind the edges in a bit for it to fit. Then, it can be used in an
impact driver and hit with a hammer, or you can use a standard air powered
impact wrench.

Tony

On Tue, Oct 11, 2011 at 12:05 AM, Marc Boucher <mboucher70 at hotmail.com>wrote:

> The hydraulic pump on my 1990 Audi 100 has developed a worsening leak.  It
> went from requiring topping up occasionally to its current state where it
> will go from the max to the min within 200 miles.
>
> There does not appear to be any leak in any of the hoses, the reservoir, or
> the steering rack.  The leak appears to be isolated to one point in the
> pump:  A ring of metal about the size of a quarter that sits on the outside
> of the pump.  There are bubbles of the green hydraulic fluid coming from the
> space between the metal ring and the body of the pump.
>
> There are at least 2-3 of those metal rings.  They have groves
> perpendicular to each other almost as though they could be pulled or
> tightened by a large Phillips screwdriver.
>
> Are there any simple options for fixing this, or does it generally require
> replacement of the pump.
>
> Thanks,