[V8] P/S, hydraulic pump leaks

[Ingo Rautenberg]

?? In posts appear to be mostly from listers posting from their aol accounts. 

On another note, I find there two be two primary sources for hydraulic system leaks:

First is audi's insanely high hydraulic pressure. Checking with another lister to see if there's a fairly easy way to reduce this. 

Second is the deterioration of the steering rack boot. This allows for contaminants to enter the system. Am not aware of any special kind of boot that will last longer than oem (though that'd be nice). 

Just my $0.02

Ingo Rautenberg

-----Original Message-----
From: bblake1055 at aol.com

Date: Mon, 15 Jun 2009 08:57:46 
To: <superdaveski at hotmail.com>; <dsaad at icehouse.net>; <v8 at audifans.com>
Subject: Re: [V8] P/S, hydraulic pump leaks


I'm not sure why there is a "question Mark" after all my sentences but they were not questions!!

Bob B


-----Original Message-----
From: D Morralee <superdaveski at hotmail.com>
To: bblake1055 at aol.com; dsaad at icehouse.net; audi fan <v8 at audifans.com>
Sent: Mon, Jun 15, 2009 8:51 am
Subject: RE: [V8] P/S, hydraulic pump leaks


oh the Audi Purest aren't going to be happy about?us talking about substitution of Pentosin for ATF (?Mobil STN 13M ) 
?
My winter car, 87?Audi 5000qt??is going on it's 8th year with ATF . 
?
superdave 
93 v8 4.2 
?
> To: dsaad at icehouse.net; V8 at AUDIFANS.COM
> Date: Mon, 15 Jun 2009 08:28:52 -0400
> From: bblake1055 at aol.com
> Subject: Re: [V8] P/S, hydraulic pump leaks
> 
> Mobil 1 DTE 13M? I purchased 5 gallons for about $70.00 3 years ago.? I have not seen any difference and I ran it all winter (Richmond, Virginia).? Temperatures don't seem to be a problem here.
> 
> 91 V8
> 92 V8
> 93 V8
> 93 V8 5 -spd
> 
> Bob Blake
> 
> 
> 
> 
> -----Original Message-----
> From: Dave Saad <dsaad at icehouse.net>
> To: V8 LIST <V8 at AUDIFANS.COM>
> Sent: Sun, Jun 14, 2009 8:19 pm
> Subject: Re: [V8] P/S, hydraulic pump leaks
> 
> 
> 
> If you are low miles, I might guess the pump is not leaking (at least 
> badly) but the hose crimps are starting to leak. The one place you 
> can put a hose clamp is the (pump supply) hose at the bottom of the 
> oil tank. The OEM clamps are not much good after the hose ages for a 
> few decades. The next most popular leak is probably a hose crimp. 
> Again, the hoses tend to shrink I guess with age and the crimped 
> fittings start to fail. In that case, you are probably best off to 
> remove them all and send to Spokane Hose for rebuild. This is a 
> pretty cheap option but a lot of work. If you do go this route, many 
> of us have switched to either Chevron RYKON 32 or another Mobile oil I 
> can not remember now, in place of the pentosin. You get 5 gallons for 
> the price of about two pints of Pentosin so you can really flush out 
> the system - which will help prolong the life of the rack seals.
> The only negative would be if you live in an extremely cold climate. 
> In that case, you could probably use Chevron RYKON 16 instead.
> I went the extra step at this point and replaced the rack boot and 
> added an oil filter in the rack return line to try to preserve the 
> life of the rack. So far so good - my rack is dry at about 150K miles.
> 
> 
> Dave
> 
> 
> On Jun 14, 2009, at 1:35 PM, bkrussow at comcast.net wrote:
> 
> >
> >
> > Some background, 1990 V8q, 71k miles. Not many miles but still 
> > pushing 20 years old. Here is the problem I need the collectives 
> > help with.
> >
> >
> >
> > The P/S--Hydraulic pump is leaking, No visible leaks at or around 
> > the hoses never been touched since Hans torqued them on in DE. No 
> > leaks from the 3 screw caps I can see. I think it may be leaking 
> > from the shaft seal, down to the A/C compressor, to the ground or 
> > blown back to the exhaust and then smokes comes out the lt frt . The 
> > serpentine belt is wet with the oil.
> >
> >
> >
> > Of the repair options out there, which one you lean towards,
> >
> > 1. Buy a rebuilt from local parts store
> >
> > 2. Re-seal this one and hope it works, ( if its the shaft
> seal is 
> > that part of the kit )
> >
> > 3. Send this pump out to a authorized ZF rebuilder
> >
> > 4. Trade the V8 in on a Peogout, since after Lemans, ALL IS LOST
> >
> >
> >
> > Thanks, Bob
> > _______________________________________________
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