Yes to all the above. Actuators often culprits. Additionally over the years and 1100 hours I’ve replaced my dump valve. One other high side to low side leak with a great frequency like yours ended up being my pump itself. The poppets sit in little cylinders in the pump. This poppet to cylinder sealing interface had worn and replacing both solved the problem.
Buy some ¼” plugs and caps for your hyd lines, get an acetone rag for cleanup and go get started.
Happy Hunting!
Larry
N360LH
1100 hours
From: Danny [mailto:danny@n107sd.com]
Sent: Friday, May 24, 2013 10:06 AM
To: lml@lancaironline.net
Subject: RE: [LML] Lancair 360 LNC2 hydraulic issue
There’s a strong possibility you may have an internal leak in one or more of your gear actuators that you can’t see. The only way to know is to isolate each one, one at a time, and then cycle the gear until you find the culprit. Rebuild kits (bunch of O-rings) are available from Lancair.
Danny
LNC2-360 Mk-II
Nothing is foolproof to the sufficiently talented fool.
From: marv@lancair.net [mailto:marv@lancair.net]
Sent: Friday, May 24, 2013 8:17 AM
To: lml@host295.hostmonster.com
Subject: [LML] Lancair 360 LNC2 hydraulic issue
Posted for RV Driver <rvsocal@gmail.com>:
Hello LML
I am a new lancair 360 owner and wanted to ask a question
I have a random cycling of the landing gear hydralic pump which runs for
about 1 sec every 1 min. I checked the fluid level and it is fine and I
can see no obvious leaks
Any Ideas ??
Roger
[Welcome aboard, Roger. Sounds like you have a leaky dump valve... I'm sure other members will be suggesting additional likely alternatives, but this is a classic that has come up many times in the past. I'm confident the LML will help get you through it.... hang in there. <marv> ]
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