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     1. 03:00 PM - Re: Compressor Yak55M (Royden Heays)
 
 
 

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Time: 
03:00:18 PM PST US
From: 
"Royden Heays" <heaysr@telus.net>
Subject: 
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
      
      <mailto:f16viperdoc@me.com> >
      
      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 <sailor2645@aol.com
      <mailto:sailor2645@aol.com> > wrote:
      > 
      <mailto:sailor2645@aol.com> >
      > 
      > 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
      > 
      > 
      > 
      > 
      > 
      
      








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