marky_24 Posted October 28, 2016 Report Share Posted October 28, 2016 I went to go fly my 78 J today and noticed that there was a good bit on oil under the plane , looking in the oil fill door I couldn't see where the oil was coming from . So I removed the cowling and started cleaning up the oil. When I cleaned the oil off the mag I noticed it moving very easily . I Called my mechanic over to retime the mags , but they just wouldn't come into time. So we pulled the mags and sent them off for an overhaul . It was odd timing, pun intended, that the mag had come lose and both sides went bad all at once . I'm just glad it happened on the ground ! Quote Link to comment Share on other sites More sharing options...
Guest Posted October 28, 2016 Report Share Posted October 28, 2016 You mean this one. http://davidduffer.com/lycoming/Lycoming_SB_SL/si/SI1508.pdf Clarence Quote Link to comment Share on other sites More sharing options...
marky_24 Posted October 29, 2016 Author Report Share Posted October 29, 2016 Yep, I suspect that the mag hold down nuts got loosened to adjust the timing at the last annual in August and they didn't put new lock washers on. 1 Quote Link to comment Share on other sites More sharing options...
carusoam Posted October 29, 2016 Report Share Posted October 29, 2016 That challenge is so old, people have forgotten about it. But it hasn't changed. They haven't invented a reusable lock washer yet...(?) Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Guest Posted October 29, 2016 Report Share Posted October 29, 2016 Although not called for, I add a pal nut aft torquing the STD1410 nut, especially on engines with a D3000 magneto. http://www.aircraftspruce.ca/catalog/hapages/ms27151palnuts.php?clickkey=3020773 Clarence Quote Link to comment Share on other sites More sharing options...
mike_elliott Posted October 29, 2016 Report Share Posted October 29, 2016 Clarence, do you know why Loctite is frowned upon by the powers who govern the installation universe of F * r * sin(theta)? Quote Link to comment Share on other sites More sharing options...
Guest Posted October 30, 2016 Report Share Posted October 30, 2016 1 hour ago, mike_elliott said: Clarence, do you know why Loctite is frowned upon by the powers who govern the installation universe of F * r * sin(theta)? Mike, While its not really standard practice, but certainly a dab of blue loctite would work as well. Clarence Quote Link to comment Share on other sites More sharing options...
carusoam Posted October 30, 2016 Report Share Posted October 30, 2016 I would think that acrylic glue might be temperature sensitive to elevated temps. Check the operating temperature range for the lock tite materials prior to use... I only looked up one, 302°F was it's limitation... (two part epoxy version) then I looked up Loctite red. They said service temperature is 300°F. To remove parts that have been glued with the red, heat to 482°F is recommended. http://www.loctiteproducts.com/tds/EPXY_HEAVY_tds.pdf http://www.loctiteproducts.com/threadlockers.shtml finally read about the blue... similar temp limitations there as well. http://www.loctiteproducts.com/tds/T_LKR_BLUE_tds.pdf How hot can a Magneto mounting bolt get? About the same temperature as the engine's oil temp? Best regards, -a- Quote Link to comment Share on other sites More sharing options...
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