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Date: Wed, 27 Dec 2006 15:33:55 -0500
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From: "Dan Schaefer" <dfs155@adelphia.net>
Subject: LNC2 Lancair 320 Hydraulic System Bleeding
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James,
Harrelson

If you don't find a cylinder leaking as mentioned by Bill Harrelson, the 
emergency dump valve is the next most likely suspect. I had to replace mine 
following the first system test as it had a serious leak, resulting in the 
symptoms you describe.

I haven't looked in the LML archives for a long time but I do remember 
posting this quite a while back (like maybe 1994 - 5) wherein I also 
mentioned the brand of High-pressure valve with which I replaced the 
original (I mention this because I can't remember the brand name - though I 
do remember that I found it in a catalog associated with Swage-Lok). In 
fact, I used the same brand for the fuel shut-off valve as well.

I don't know what valves are being supplied in the later kits (mine was a 
very early 235 kit) but the original units were pretty bad. I've had no 
subsequent problems since installing the new units.

Good luck with your troubleshooting.

Dan Schaefer
N235SP - flying 13 years and still no new leaks.