REFLECTOR: HYDRAULIC PUMP PULSES

[steve korney]

Air Bubbles....



Best... Steve




----Original Message Follows----
From: "Tom Martino" <tmartino at troubleshooter.com>
Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
To: <reflector at www.tvbf.org>
Subject: REFLECTOR: HYDRAULIC PUMP PULSES
Date: Mon, 18 Jul 2005 21:56:58 -0600


What does it mean when the gear comes all the way up, then you hear a
few pulses of the hydraulic pump at the end of the cycle.  The gear
doesn't move because all three are already in their most retracted
positions.  I simply hear pulsations of the pump.
I do not have any leaks ... and it only occurs right after the nose gear
has reached its full "up" position.
After the initial pulses, the pump rests.  After that I can leave the
gear up for hours and the hydraulic pump will not run or pulse -
confirming what my visual inspection has revealed - which is NO leaks.
So why the two or three short pulses at the end of the cycle?
Guesses anyone?

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