[Milsurplus] ART-13 DY-17 U10?

[Jim Whartenby]

EugeneI would put the connector shell in a machinist's vice with some paper or cardboard between the shell and vice jaws to hold the shell steady.  Using a pick, scribe or a dart, gently pry between the ring and the deepest notch seen between pins 2 & 3.  
Wiggle, giggle or rotate the pick until you get past the ring edge.  Once you get the ring to move, put a small flat screwdriver in the open space and move the pick to a new location.  
Remember that the ring is under pressure and has a tendency disappear!
Good luck,Jim

Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy

-----Original Message-----
From: W2HX <w2hx at w2hx.com>
To: milsurplus at mailman <milsurplus at mailman.qth.net>; mrca at mailman.qth.net <mrca at mailman.qth.net>
Sent: Sat, May 28, 2022 2:05 pm
Subject: [Milsurplus] ART-13 DY-17 U10?

 <!--#yiv0171596651 filtered {}#yiv0171596651 filtered {}#yiv0171596651 p.yiv0171596651MsoNormal, #yiv0171596651 li.yiv0171596651MsoNormal, #yiv0171596651 div.yiv0171596651MsoNormal {margin:0in;font-size:11.0pt;font-family:"Calibri", sans-serif;}#yiv0171596651 a:link, #yiv0171596651 span.yiv0171596651MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv0171596651 span.yiv0171596651EmailStyle17 {font-family:"Calibri", sans-serif;color:windowtext;}#yiv0171596651 .yiv0171596651MsoChpDefault {font-family:"Calibri", sans-serif;}#yiv0171596651 filtered {}#yiv0171596651 div.yiv0171596651WordSection1 {}-->Hello all,    I am working on wiring up this DY-17 dynamotor for use with the ART-13. https://w2hx.com/x/ART-13/u-10.jpg    Working to solder up U-10 for the DC input to the dyno, I have removed the back shell/strain relief to access the solder cups. The cups are pretty deep inside and so I also removed 3 screws around the perimeter that appear to allow one to remove the middle shell to give more room to access the solder cups. https://w2hx.com/x/ART-13/u-10b.jpg (you can see one screw removed)    However, for the life of me, I can’t get the middle shell to separate from the contact block of the connector. What am I doing wrong? When I look down inside, I see something that could possible be a snap ring, but there are no places to grip the ring to retract it, and even if I use a screw driver I can’t get it to move or anything. Maybe it isn’t a snap ring.    Here is the inside: https://w2hx.com/x/ART-13/U-10a.jpg https://w2hx.com/x/ART-13/u-10c.jpg    Is there a secret to separating this? Thanks       73 Eugene W2HX
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