912A exhaust spring problems
in 912 / 914 Technical Questions
13 years ago
I am a happy owner of a Diamond HK36R motorglider with a brand one year old 80 HP 912A engine. With only 150 hours on it, I have replaced the right rear exhaust pipe spring five times, the back side one, and the front spring on the same pipe once. All other springs are lasting fine. The failure is at the beginning of the bend for the attaching loop. Recently at annual, we tried putting RTV on the coils in case it was a vibration problem, but the spring seemed to snap only a little sooner.
