Mailing List lml@lancaironline.net Message #36579
From: Mark Ravinski <mjrav@comcast.net>
Sender: <marv@lancaironline.net>
Subject: LNC2 Hydraulic problem
Date: Thu, 06 Jul 2006 01:08:32 -0400
To: <lml@lancaironline.net>
Hi Matt,
Once again you and I seem to be sharing gremlins that no one else does.
I've had the problem off and on, for years.
 
When the plane has been sitting - for a few hours or even weeks - I always look for the hyd pump to run for 1 to 2 seconds when the master goes on.  if it doesn't, I'll crack the dump valve looking for the pump to run and make downpressure on the gear.
Overcenter locks are great but I don't feel comfortable taxiing without downpressure.
Like your case, If I can't get the pump to run on the ground, the gear may not retract in flight either.
I bleed my system under the pilot's seat and keep a rag there to catch the drip.  It's always been the fix.
I wonder if one of the pressure switches is out of adjustment - maybe in concert with temp changes or other system leaks.
 
Mark Ravinski
N360KB  1369 hrs.
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