jt_flyer Posted April 9, 2017 Report Posted April 9, 2017 Hi, I'm in the process of installing a heated pitot on my 64 M20c/d. It's a relatively easy process since Mooney was thoughtful enough to pre-install the pitot wire and leave a pre-label the space for the switch. My only problem (other than the high cost of the certified pitot, breaker switch and mast) seems to be which fitting I should use from the 1/4" plastic nylaflow tubing to the new AN 4 flare fitting of the pitot tube. I've included some pictures. Any suggestion for a source of part number would be greatly appreciated. Joe
N201MKTurbo Posted April 9, 2017 Report Posted April 9, 2017 The parts catalog says to use a Mooney part # 820015-000 extension assembly coupled to a Swagelok A-400-6 coupling. I believe the Mooney assembly is just an AN6 B-Nut on a short piece of tubing. The two pieces of tubing are then connected with the Swagelok fitting.
carusoam Posted April 9, 2017 Report Posted April 9, 2017 If there is a compression fitting that goes on the tubing... 1) assume it got compressed once. Inspect closely for proof like a uniform scratch in the surface. 2) it's chance of sealing properly again are not worth considering. 3) It will only cost a few cents to get the piece from swagelock. 4) cut off the old one, it will shorten the tube an inch? PP thoughts only not a mechanic. Best regards, -a-
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