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It has been a practice of mine for ten years to, after shutdown and before
securing (off) the master switch, to open the hydraulic dump valve, let the
motor run for a couple seconds then master switch off. This relieves
pressure on everything. Before startup, I turn the master on and the pump
runs for a second or two as I close the dump valve.
For what it is worth. It has just seemed to me that this practice would
help the service life of switches, valves connections etc. I haven't had
problems except for relacing the old (1989) pump and re-flaring a couple of
lines. Any validity to this practice?
George Shattuck
----- Original Message ----- From: <PJHWFD@aol.com>
To: "Lancair Mailing List" <lml@lancaironline.net>
Sent: Friday, December 31, 2004 8:58 AM
Subject: [LML] Re: 320/360 gear extension failure - a theory
In a message dated 12/30/2004 2:28:44 PM Eastern Standard Time,
Rob.Logan@Philips.com writes:
Twice I've selected gear *up* and nothing happened.
Rob
Twice I've selected gear up and nothing happened. I recycled the gear and
out went the green. Only in the cold, why? I've been thinking would it
be wise
to open the dump valve before start up to release potentially built up
pressure? I recall you had a door hang open when we were flying. Did you
shut the
breakers before opening the dump valve and recycling? Happy New Year
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