I've had no problem for 25 years with the carriage on my 1980 vintage Mark V, but one day recently I found that the clamping mechanism on my carriage had seized up. Wise and cautious fellow that I am (NOT!), I took a pipe wrench to the spinner handle and promptly broke off one of its "ears." Well, I can replace that, I told myself, and then applied the wrench to the hub--and promptly broke off the threaded rod that runs through the mechanism.
My question is, how do I dismantle the carriage clamping mechanism so I can replace the broken parts? The threaded rod is broken off right at the base of the carriage. And, I presume, it is still seized up. If I put the Shopsmith in its vertical position, I can easily access the threaded rod where it passes beneath the carriage.
Any suggestions? (Other than don't use a pipe wrench!)