G'day All, I don't have an ACCO but I do have a user handbook for the Mk3, it does have a diagram of the winch shear pin, and for all I know it could be drawn full size, so if you send me a PM I could take a pic of it and some measurements that might make sense to you, also you try REMLR.com as there is section inside that website dedicated to ACCO's cheers mate Dennis
