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From: marv@lancair.net
Subject: Re: ] Question about Hydraulic Pump
To: lml
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Date: Wed, 02 Jul 2008 12:39:49 -0400
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Posted for gerardoconnell@optusnet.com.au:

  Bill you might have the reversed spool valve problem which causes "glitches"
in the system
  
  If you search the archives you will find lots of references to this and also
a diagram of the guts of the pump showing correct orientation of the spool
valve
  
  A test for the reversed valve is to jack the aircraft up retract the gear 
and
whilst it is in transit select gear down. Usually, if you have the reversed
spool valve it will fail this test.
  
  Gerard