---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Fri 08/03/07: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:20 AM - Re: brake problems (A. Dennis Savarese) 2. 05:03 AM - Re: brake problems (HodgeJW@aol.com) 3. 05:24 AM - Re: brake problems (A. Dennis Savarese) 4. 05:34 AM - Re: (more) brake problems (A. Dennis Savarese) 5. 06:54 AM - Re: (more) brake problems (Tim Gagnon) 6. 07:48 AM - retract actuator setting (Dale) 7. 11:20 AM - Re: retract actuator setting (A. Dennis Savarese) 8. 11:53 AM - Re: Re: (more) brake problems (me262pilot@comcast.net) 9. 07:38 PM - Re: (more) brake problems (HodgeJW@aol.com) ________________________________ Message 1 _____________________________________ Time: 04:20:29 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: brake problems Jay, What is "that valve"? Are you talking about the brake reducing valve that is under the floor in the rear cockpit on the right side? (Yak 52). When you had the "selector valve" out, did you put a new overhaul kit in it? Doug Sapp has overhaul kits for both the brake differential valve (selector valve) and the brake reducing valve (that valve?). Do you have any binding in either the front or rear brake cable causing the brake handle to appear to release very slowly? This is not a common problem. BTW, is your airplane a 52 or a CJ? Dennis ----- Original Message ----- From: HodgeJW@aol.com To: yak-list@matronics.com Sent: Thursday, August 02, 2007 10:25 PM Subject: Yak-List: brake problems Went flying today and when I went to put the plane back in the hanger, I couldn't. Parking brake was not set, but the wheels were locked up solid. Did some looking around and discovered I could get the brakes to release by moving the rudder back and forth. Figured the problem might be the selector valve. Pulled it out and cleaned it up. No obvious problems. Put it back in and no change. Then I noticed that when I squeeze and release the brake lever instead of a quick "phist" of air I get a slow hiss down by the reducer valve. Well hell, that must be the problem. Out comes that valve. Cleaned it up (boy was it dirty) and put it back in. Well, you guessed it, no change. What's up? Thanks, Jay ------------------------------------------------------------------------- ----- ________________________________ Message 2 _____________________________________ Time: 05:03:01 AM PST US From: HodgeJW@aol.com Subject: Re: Yak-List: brake problems Dennis, Yes it is a Yak 52. The first valve that I took out and cleaned was the "selector valve". Did not rebuild it with seals as it looked just fine. The second valve that I took out was the one under the floor in the right side of the rear cockpit. That "reducer valve" was very dirty inside but the seals looked to be in good condition. As for the brake cable, I will look at that this morning. It does release very slowly. Thanks for the help. Jay http://discover.aol.com/memed/aolcom30tour ________________________________ Message 3 _____________________________________ Time: 05:24:44 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: brake problems The kits are about $65 each from Doug. If you don't know when they were last rebuilt, I would strongly recommend you consider rebuilding them. Dennis ----- Original Message ----- From: HodgeJW@aol.com To: yak-list@matronics.com Sent: Friday, August 03, 2007 7:02 AM Subject: Re: Yak-List: brake problems Dennis, Yes it is a Yak 52. The first valve that I took out and cleaned was the "selector valve". Did not rebuild it with seals as it looked just fine. The second valve that I took out was the one under the floor in the right side of the rear cockpit. That "reducer valve" was very dirty inside but the seals looked to be in good condition. As for the brake cable, I will look at that this morning. It does release very slowly. Thanks for the help. Jay ------------------------------------------------------------------------- ----- ________________________________ Message 4 _____________________________________ Time: 05:34:49 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: (more) brake problems Brake cable releasing very slowly sounds like it may be binding at the attach bracket at the brake reducing valve under the floor in the rear cockpit. Dennis ----- Original Message ----- From: HodgeJW@aol.com To: yak-list@matronics.com Sent: Friday, August 03, 2007 7:02 AM Subject: Re: Yak-List: brake problems Dennis, Yes it is a Yak 52. The first valve that I took out and cleaned was the "selector valve". Did not rebuild it with seals as it looked just fine. The second valve that I took out was the one under the floor in the right side of the rear cockpit. That "reducer valve" was very dirty inside but the seals looked to be in good condition. As for the brake cable, I will look at that this morning. It does release very slowly. Thanks for the help. Jay ------------------------------------------------------------------------- ----- ________________________________ Message 5 _____________________________________ Time: 06:54:07 AM PST US Subject: Yak-List: Re: (more) brake problems From: "Tim Gagnon" I think you should get a Yak-50 and have a whole new set of problems! Plus it would only cost you half to fix it! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=127319#127319 ________________________________ Message 6 _____________________________________ Time: 07:48:33 AM PST US Subject: Yak-List: retract actuator setting From: "Dale" Can someone tell me the proper way to set main gear scissor links that connect to the retract actuator on the 52. Dale Read this topic online here: http://forums.matronics.com/viewtopic.php?p=127321#127321 ________________________________ Message 7 _____________________________________ Time: 11:20:32 AM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: retract actuator setting Place a straight edge on the "scissor link". Both halves of the scissor link should be flush with the straight edge when the actuator rod end is attached.. Remove the keeper on the actuator shaft rod end and rotate the rod end to mate with the attach point on the scissor link. Dennis ----- Original Message ----- From: "Dale" Sent: Friday, August 03, 2007 9:47 AM Subject: Yak-List: retract actuator setting > > Can someone tell me the proper way to set main gear scissor links that > connect to the retract actuator on the 52. > > Dale > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=127321#127321 > > > ________________________________ Message 8 _____________________________________ Time: 11:53:34 AM PST US From: me262pilot@comcast.net Subject: Re: Yak-List: Re: (more) brake problems I will second that one! -------------- Original message ---------------------- From: "Tim Gagnon" > > I think you should get a Yak-50 and have a whole new set of problems! Plus it > would only cost you half to fix it! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=127319#127319 > > > > > > > > > > ________________________________ Message 9 _____________________________________ Time: 07:38:54 PM PST US From: HodgeJW@aol.com Subject: Re: Yak-List: (more) brake problems Dennis, Just got back from the airport after working on my Yak all day. You were right. The problem was the cable itself. A couple of strands had broken and had gotten wound up in the outer sheath. The return spring down by the reducer valve was not strong enough to return the handle when you let it go. It just held the presure in the line. I was able to replace the inner cable and all is well. Thanks for your help. As for that Tim Gagnon guy who says I need a 50, why? I can fly yours! Thanks man. Jay http://discover.aol.com/memed/aolcom30tour ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.