Vetus Flexi Coupling

Once Grace was back in the UK, I became aware of a slight vibration when under power and later investigation during routine engine bay checks resulted in me discovering that the Vetus Flexi Coupling between the engine gear box and prop shaft was somehow out of alignment.

Again a video paints a thousand words....

To begin with I was worried that something was bent but after getting some confidence together.... I stripped out the coupling and found that it was basically falling apart. No broken or worn parts. Just coming loose. 

Internal socket head screws hidden between the gearbox flange and the coupling were slowly working themselves out.

I reassembled mr Vetus with appropriate torque settings and thread lock. Grace is running smooth again!