Rebuilding Hydraulic Pump

Bernie Benz b.benz at
Sat Apr 5 16:08:38 EST 2003

Hi Derek,

Most needed parts are available from your local O-ring or bearing supply
house.  But first, you must determine for sure exactly where the leak
is/are.  To do this, spray with gunk all around, under side too and hose
off.  Idle or drive a bit and look/feel for oil.  The shaft seal is an
unlikely leak source, inasmuch as it is under slightly negative pressure,
the reservoir level being a few inches lower.  Much more likely, one of the
cylinder head O-rings.  If you don't have a drag link socket, just use a
chisel to tap the head loose and use the largest flat blade that you have to
unscrew.  If a lower one you may have to remove the pump, but don't
disconnect the hoses, if possible.

If you can find the leak, I have the o-ring p/ns.


> From: "Derek Pulvino" <dbpulvino at>
> Date: Sat, 05 Apr 2003 15:37:13 -0800
> To: 200q20v at
> Subject: Rebuilding Hydraulic Pump
> Hey gang,
> What do I need to do the above, and where can I get my hands on the parts?
> Is it something that I can order from Rod.  Has anybody ever noted problems
> with the internal bushing/bearing(s)?  Is there ever problems notes besides
> needing a drag link socket to get the X-caps.  Is there any other
> considerations I need to have?  Will I need to remove the intake manifold to
> get the pump out.
> Noticed some leakage out of the front of the pump, behind the pulley and the
> Pentosin level in the reservoir going down.  Next couple of weeks I'll
> likely be in a good position to address this, so want to order parts soon to
> be ready to address this with sniper precision (maybe a bad metaphor
> considering, maybe I should use "shock and awe"...).
> thanks
> derek p

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