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After finding the case bolts on top of our 500-hour Lycoming O-540
loose enough to cause a minor oil leak yesterday, today I had my A&P check the torque of all the through bolts and cylinder bolts that could be reached without dismantling the engine. As I watched him check, one by one, they were all thankfully perfect. If any one of them had been anything but perfect, I was going to have him tear the exhaust (and other stuff) off so that he could reach the bottom through bolts. However, since the top 12 or 16 bolts were all perfect, I will trust that the bottom ones are tight as well. By the way -- to those who said that "all newly built (or rebuilt) engines should have all the cylinder and through bolts checked for proper torque, 'x' number of hours after a rebuild", I have been unable to find any local A&Ps who have ever heard of this. One local gray head stated that "In 35 years, I have never seen a new plane rolled in the shop after 30 hours to have the cowls, exhaust system, and baffles removed so that we could check the torque on the through or cylinder bolts. Not even once." So, what to think? All I know is the oil leak is gone, the other bolts were to specs, and the engine continues to run great. I'm gonna fly the pants off it, and not worry about it again. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destinatin" |
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