[7footbed]

What is the proper procedure for removing the pedal hinge pin from a 1959 Chevrolet Apache 3/4 ton truck master cylinder? It is quite rusty and is in a remote area (must be done on a jack). After removing the retainer fork, there are two small flats on the end with the Alemite fitting. Does that mean that the pin is threaded? Truck is super rusty and using a hammer is going to be hard.
Clearance between frame and master is close.
Thanks in Advance !