X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 02 Mar 2010 20:28:16 -0500 Message-ID: X-Original-Return-Path: Received: from mail.lancair.com ([66.39.173.18] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4143844 for lml@lancaironline.net; Tue, 02 Mar 2010 17:28:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=66.39.173.18; envelope-from=RossC@lancair.com Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CABA57.2DD52086" X-MimeOLE: Produced By Microsoft Exchange V6.5 Subject: L1VP mix box problems X-Original-Date: Tue, 2 Mar 2010 14:24:52 -0800 X-Original-Message-ID: <8128CA1601FBCF478DAAAC0917E6CF56C8E7A9@lindbergh.lancair.local> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: L1VP mix box problems Thread-Index: Acq6Vy2sbCyRTulTRJCkjzVa327now== From: "Ross Connell" X-Original-To: This is a multi-part message in MIME format. ------_=_NextPart_001_01CABA57.2DD52086 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Marv =20 Referring to Doug Johnson's post about mix boxes that continually leak hot air, there are a couple of conditions that can cause this. The older units were built with the rotating valve shaft bushing installed from the inside. Over time the bushing could move toward the inside of the valve, and because the spring sat on top of the bushing, the rotating valve was on longer sealed against the front cover. This can be repaired without removing the valve assembly, by removing the actuating arm and spring, and pulling forward on the shaft to assure the valve is tight against the front cover. If there is any doubt that it is seated, use a heat gun to warm up the front cover while pulling on the shaft. Next install the (no charge) spring kit #596, this will keep the valve seated against the front cover. The foregoing will fix the problem ---IF--- the plastic face on the rotating valve is smooth and not warped. If the valve face is damaged it will require a new Teflon piece be installed on the valve. If this is the case, call us for more information =20 Ross Connell 541-923-2244 =20 ------_=_NextPart_001_01CABA57.2DD52086 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Marv
 
Referring to Doug=20 Johnson's post about mix boxes that continually leak hot air, there are = a couple=20 of conditions that can cause this.
The = older units were=20 built with the rotating valve shaft bushing installed from the = inside. Over=20 time the bushing could move toward the inside of the valve, and because = the=20 spring sat on top of the bushing, the rotating valve was on longer = sealed=20 against the front cover.
This = can be repaired=20 without removing the valve assembly, by removing the actuating arm and=20 spring, and pulling forward on the shaft to assure the valve is = tight=20 against the front cover. If there is any doubt that it is seated, use a = heat gun=20 to warm up the front cover while pulling on the = shaft.
Next = install the (no=20 charge) spring kit #596, this will keep the valve seated = against the=20 front cover.
The = foregoing will=20 fix the problem ---IF--- the plastic face on the rotating valve is = smooth and=20 not warped.
If the = valve=20 face is damaged it will require a new Teflon piece be = installed=20 on the valve.
If = this is the case,=20 call us for more information
 
Ross=20 Connell
541-923-2244    
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