Return-Path: Sender: (Marvin Kaye) To: lml Date: Thu, 10 Jul 2003 11:30:02 -0400 Message-ID: X-Original-Return-Path: Received: from imo-r03.mx.aol.com ([152.163.225.99] verified) by logan.com (CommuniGate Pro SMTP 4.1b9) with ESMTP id 2470774 for lml@lancaironline.net; Thu, 10 Jul 2003 11:12:46 -0400 Received: from Sky2high@aol.com by imo-r03.mx.aol.com (mail_out_v36_r1.1.) id q.7c.3b1af4d5 (4238) for ; Thu, 10 Jul 2003 11:12:41 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <7c.3b1af4d5.2c3edc69@aol.com> X-Original-Date: Thu, 10 Jul 2003 11:12:41 EDT Subject: Re: [LML] Re: Hydraulics X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1057849961" X-Mailer: 9.0 for Windows sub 330 -------------------------------1057849961 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 7/10/2003 9:43:58 AM Central Daylight Time, PJHWFD@aol.com writes: My left inboard gear door will partially close before the main gear can close. The results are obvious. Other than that its a great milestone in the building process. Thanks in advance. Assuming all things are equal, the only ways that the door could start to close if hoses are incorrectly connected or something is allowing the door valve (activated by the physical up position of the main gear) to pass hydraulic fluid to the door actuator (stuck partially closed, lube it and exercise it with your thumb). Could be a dirt particle holding the valve open. Perhaps this could happen with air in the system. Run the hydraulic pump with the dump valve open and the gear down for a minute. Then, manually lift the gear and close the doors and run the pump again with the dump valve open. This procedure should remove a great deal of air from the system. Maybe you should do this twice. Scott Krueger 2003 Air Venture Cup Racer #94 Sky2high@aol.com LNC2 N92EX IO320 Aurora, IL (KARR) -------------------------------1057849961 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 7/10/2003 9:43:58 AM Central Daylight Time,=20 PJHWFD@aol.com writes:

My left inboard gear door will partially close b= efore=20 the main gear can close. The results are obvious. Other than tha= t=20 its a great milestone in the building process. Thanks in=20 advance.

Assuming all things are equal, the only ways that the door could start=20 to close if hoses are incorrectly connected or something is allowing the doo= r=20 valve (activated by the physical up position of the main gear) to pass=20 hydraulic fluid to the door actuator (stuck partially closed, lube it and ex= ercise it=20 with your thumb). Could be a dirt particle holding the valve open.&nbs= p;=20

Perhaps this could happen with air in the system. Run the=20 hydraulic pump with the dump valve open and the gear down for a minute. = ; Then,=20 manually lift the gear and close the doors and run the pump again with the d= ump=20 valve open. This procedure should remove a great deal of air from the=20 system. Maybe you should do this twice.

Scott=20 Krueger
2003 Air Venture Cup Racer #94
Sky2high@aol.com
LNC2 N92EX=20= IO320=20 Aurora, IL (KARR)

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