hard start issue+ need steering rack

[PeterBergin at aol.com]

It may be, I will check it tomorrow.  I know when I have shut the car  off 
after a drive and checked the level, than checked after it sat overnight the 
 reservoir was about 1/2 lower.  I assumed it was due to fluid contraction  
after going to below zero.
 
Thanks again Bernie,
Pete
 
 
In a message dated 1/23/2011 5:16:56 P.M. Central Standard Time,  
b.benz at charter.net writes:

Well  that’s pretty definite! And I haven’t been in that area for quite 
some time so  don’t recall just how far the valve body extends thru the fire 
wall.  
Check your rack return line / hose to the reservoir for blockage. Maybe  
disconnect from the reservoir and run into a can.
If not blocked, this seal, from your description, should be leaking from  
reservoir head with or without engine running or steering input.


Bernie




On Jan 23, 2011, at 2:47 PM, _PeterBergin at aol.com_ 
(mailto:PeterBergin at aol.com)  wrote:


That's what I hoped, however I can see it bubbling out of the shaft and  
dripping inside the fire wall.
  No drips under the car. and everything looks dry. under the  hood.
Thanks, Pete
 
 
In a message dated 1/23/2011 4:44:50 P.M. Central Standard Time, 
_b.benz at charter.net_ (mailto:b.benz at charter.net)  writes:

If  the rack’s input shaft seal were leaking (or a hose or hose   
connector to the valve body) the fluid would just run down the  rack’s  
valve body and drip to the ground, outside of the fire  wall. More  
likely you have a leak in your replacement hydraulic  power brake  
booster dripping down onto the steering  shaft.

Bernie

On Jan 23, 2011, at 2:27 PM, _PeterBergin at aol.com_ 
(mailto:PeterBergin at aol.com)   wrote:

> Bernie, this is a strange one.  Had a leak at the  brake booster  
> (lots of green gold under the carpet).   Would usually leak shortly  
> after start up on cold  mornings.  Bought a used one from Force 5  
> and had  Anderson Motor sports install it (great Audi shop near  
>  Minneapolis).  When it would leak, it would empty its self  quickly,  
> no puddle under the car and everything under the  hood dry.
>
> Pick up the car and drove for two days and the  same symptom again,  
> looked under the dash with the motor  running and could hear a  
> gurgling noise and could see  Pentosin leaking inside the fire wall  
> from the steering  shaft.  Leaked until reservoir empty and no  
> steering  or brakes.  Filled up went for a drive, no leak until I   
> started the car the next morning (very cold  again).
>
> Some one told me the problem might be that I have  a not OEM made  
> high pressure hose feeding the rack and it  did not have the  
> pressure reducer in the hose.  Never  heard of that before and I  
> have had the hose for at least 5  years.  Have rebuilt the pump  
> twice, put not for a  long time.  Have gone through 6 cans of green  
> gold  between the two leaks.
>
> I am puzzled,  wonder if I  have a problem with the reservoir return  
>  line?
>
> Still looking  for answers before I put big $$$  into a rack.  This  
> rack was a rebuilt short rack (what  ever that means) that I bought  
> from Blau and installed as a  preventive measure when I did the  
> clutch at 160k, have 239k  on the clock now.
>
> Any further input would be  appreciated.
>
> Pete
>
> In a message dated  1/23/2011 4:11:12 P.M. Central Standard Time,  
> _b.benz at charter.net_ (mailto:b.benz at charter.net)  writes:
>  I’m intrigued that you say that your rack is leaking “at the  steering
> column“ input shaft seal! Never seen nor heard of  that!
> Neither the input nor output shaft seals of the valve body  are under
> pressure, just reservoir return head pressure.
>  If you are absolutely certain that your leak is one of these seals
>  and not the high pressure rod seal, the latter would show fluid at
>  the center bellows not the valve body, I’d add a bit of engine or
>  auto tranny snake oil to the PS reservoir and drive the SOB for 1K
>  miles.
> Try this first, because the PITA is the R&R, not the  rack overhaul.
>
> I’ve overhauled 3 of these ZF racks and  believe that they are
> absolutely bullet proof excepting for the  hard plastic (read cheap)
> high pressure rod seal. The last time,  redesigning and replacing this
> seal with an elastomeric quad ring  with nylon back up ring.  Going
> strong after  >100K.
>
> Bernie
>
>
> On Jan 22, 2011,  at 6:16 AM, _PeterBergin at aol.com_ 
(mailto:PeterBergin at aol.com)  wrote:
>  >
> > PS, any one know where I can get a good deal on a  rebuilt steering
> > rack,
> > mine is leaking at the  steering column.
> >
> > Pete
> >
>  >
>
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