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From: Lorn H Olsen <lorn@dynacomm.us>
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Subject: Re: LNC2 Gear Hydraulics
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Douglas,

I tried that one time when the temp had increased 50=B0F from the time I =
landed to when I wanted to take off. It didn't work. I have pressure =
gauges under my passenger seat. When I looked at the gauges, both =
pressures were at about 1,300 PSI. The internal pump valves must have =
open at that pressure. The dump valve did no good at all. Your solution =
only works if you don't need to use it.

Wolfgang's 10 minute fix solves all of the pump problems, on the ground =
and in the air.  You can contact him at 248-471-2000 or call me at the =
number below.

Lorn

> From: Douglas Brunner <douglasbrunner@earthlink.net>
> Date: April 1, 2011 4:27:52 PM EDT
>=20
> I have incorporated what I call a "gear burp" into my checklist as =
part of the runup.
> =20
> What I do is breifly open and close the hydraulic gear dump valve.  =
The gear pump will run briefly then shut down.
> =20
> Prior to doing the "gear burp" regularly, I had a number of instances =
when my gear would not come up.  Since then - none.
> =20
> D. Brunner
> Legacy N241DB - 500 hours

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,790 hrs, N31161, Y47, SE Michigan