Re: Hello, Coupler ?
Has anyone seen a coupling fail?
I've seen lots of them fail, can be in 2 ways, the rubber breakes loose from either the inner or outer part of the coupler, or the splines wear out.
I have also seen brand new ones that were the splines were not perpendicular to the surface that bolts to the flywheel. You can never get them aligned, even if you did align it in just one direction you would have a serious vibration and the rubber would do a lot of flexing and overheating and would fail quickly. When you get one of those, you have to replace them.
They are assembled similar to a prop hub, but with a lot closer tolerance.
You also can't buy just seperate parts of any coupler.