---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sun 05/29/16: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:00 PM - Re: Compressor Yak55M (Royden Heays) ________________________________ Message 1 _____________________________________ Time: 03:00:18 PM PST US From: "Royden Heays" Subject: RE: Yak-List: Compressor Yak55M I agree with Doc. Also; * Take a look at the banjo fitting at the compressor. It does gum up with cooked oil. Take it apart and clean it. Can be done without removing the compressor. * Check the air intake filter is clean (not likely to cause the problem you describe) * Check the valve at the snot collector below the air receiver that it is properly closed. * There is a check valve in the line that gums up too. Take it apart and clean it. * Check that the over pressure relief valve is closing properly. It can get gummed up and not seat properly. It's under the cockpit floor accessible through a covered opening in the fuselage. Do your Yak 55M have a compressor unloader fitted? If not, the system gums up faster as the compressor is pumping all the time and the pressure relief valve is popping all the time. Regards Royden C-GRED, Yak 55M -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Roger Kemp Sent: Saturday, May 28, 2016 1:05 PM Subject: Re: Yak-List: Compressor Yak55M > How long has it been since the check valve was pulled and cleaned. You will most likely have to pull your compressor though. Check with George or Cliff Coy for a replacement. Doc Sent from my iPad > On May 28, 2016, at 6:24 AM, Dan caldwell > wrote: > > > > Does anyone have experience with repairing a compressor on the Yak55? My compressor has been intermittent for the past dozen flights, sometimes achieving 600 psi but lately only 400 psi. > I suspect the second stage is failing. Reading the manual does not shed any light on what to do. Any ideas? > Dan Caldwell > > Sent from my iPad > > > > > ------------------------------------------------------------------------------------- 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.