ISO masthead for 1992 Catalina 28 or exploded parts view of pin and sheaves

[Crackerjackin]

Hello to all.
My delrin sheaves at the masthead for the main halyard and the topping lift disintegrated and I need to install new ones. Before stepping the mast I would like to see how the pin and sheaves are supported/mounted under the masthead. If anyone knows where I could purchase this part it would be much appreciated.
I keep searching the web but am having no luck finding one.
Many thanks...Charles

 

[jssailem]

I would check Catalina Direct and the shop here on SBO.

Documents and ideas might be available at the Catalina 28 Association. They have compiled a treasure chest of information and supporting documents on the boat.