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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Possible Gear Hydraulic System Vapor Lock
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Date: Fri, 12 Mar 2004 22:25:31 -0500
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Posted for "Christopher Zavatson" <Christopher.Zavatson@udlp.com>:

Hollis,
The 500-hour question…..  
It is possible to operate the system with the spool valve in backwards.  The 
drawbacks are:
1.	The high pressure will have to fight the low-pressure relief valve while 
bringing the gear up.  This will tend to require a slightly higher setting on 
the high side pressure switch.
2.	A leak from high to low can get trapped in the low circuit. 
3.	If you need to extend the gear while it is retracting, you may see a 
hesitation of several seconds in the response.
Unless you have a leak, install pressure gauges or test the retraction to 
extension response you may never know anything is wrong.
Chris 


Christopher Zavatson
Mobility Technologies
United Defense
(408)289-4329