[V8] P/S, hydraulic pump leaks

[kneale at knitknacks.com]

I'd guess your pump is leaking from one of the mushroom caps you can't see
while it's in place.

The pump can be rebuilt.  Last kit I bought was $6 from Autohausaz.  It did
include the shaft seal.  I've never seen a shaft seal leak oil out.  What
they normally do is suck air in, causing the oil to foam up.  The resulting
froth contributes to the famous Pentosin Volcano.

I don't believe you can source a new pump.  They'll all be rebuilt. 
However good that is depends upon the rebuilder.  I'd only trust a know
rebuilder or one from ZF itself.

Be aware the V8 version of the pump is V8-specific.  No other pump will fit
into the bracket, at least not without grinding away part of the body of a
5k/100/200 pump.

The Bentley for Type 44s has a great writeup on pump resealing.  You'll
need a press if you decide to do the front seal because you have to remove
the pulley flange, which is pressed into place. 

 

Original Message:
-----------------
From:  bkrussow at comcast.net
Date: Sun, 14 Jun 2009 19:35:56 +0000 (UTC)
To: V8 at AUDIFANS.COM
Subject: [V8] P/S, hydraulic pump leaks




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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