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extracting Mast step sheaves pins

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  • 1 year later...
  • 1 month later...

I just did this to replace mast step sheaves. I had two separate pins for port and starboard sheaves...which I think they all will since the sheaves are angled outboard. We had to tap #8 fasteners into the end of the exposed pin. Use lots of lubricants and some heat(didn't care about melting sheaves since they got replaced) and a gentle pull on the #8 fastener in the pin with vice grips to get the pin to slide out. Don't lose the pin and don't lose the cover plates that keep the pin captive. The hole pattern on the mast step will be hard to copy onto a new plate.

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  • 2 weeks later...
  • 5 months later...

Anyone has dimensions on the sheaves? Did replacing them make a big difference? Mine spin freely if lubricated, but my boat was made in 1983 so who knows the condition. Can be difficult to get the main up but there can be other causes ... Also, there is a dedicated tool one can buy to extract roll pins (actually I believe they are called coiled springs) that isn't very expensive -- but does anyone know the size to use?

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