Lovejoy coupling.

Sounds nice, doesn't it? Love+joy+coupling ?



Two round blocks of metal, milled with teeth. Each one is mounted on a shaft using 1 or 2 set screws. A rubbery plastic "spider" goes inbetween them. In essence, they are sprockets. One sprocket turns the other when their teeth mesh. If the teeth get damaged, the engine shaft turns, but the pump shaft doesn't. Explains to me why the hydraulics failed. Will post pictures of the new ones and the old ones later.