Bench testing a steering box (40 Ford)

[Zax40]

Is it possible to bench test a 40 Ford steering box to see if it is in need of a rebuild? If so could someone share the process please?

I got a complete 40 column from a friend and want to swap it in to replace the one in my 40 that is very worn out. Visually it looks to be in good shape and even has a column drop with working key.