Ya, I was wondering the same thing.

"Pound out the inner torque tube bushings and seal with a 6' length of 1" pipe with a nipple of the "business" end (toward the bushing).
Just stick it up the tube till you feel something - that'll be the bushing and seal; then, punch it out with the BFH."


That is what it says from the instructions from Patrick's.
I believe the nipple end is the end that is threaded about inch in from the end of the pipe.
The other end must be sawn off square, so you have a solid end to hit with the hammer.
As a opposed to hitting a threaded / nipple end.
Like you said it doesn't take much force to push out the 2 bushings & oil seal.

After checking the bushing dimensions from 1921 -1954 Source
Outside dimensions range from 1.380 to 1.773 O.D. which is 1 3/8" to 1 3/4" O.D. That would be torque tube inside dimensions.
Inside dimensions range from 1.00 to 1.350 O.D. which is 1" to 1 3/8" O.D. That would be propeller shaft outside dimensions.

Logic would say the the best size pipe would be: 6' foot x 1 1/4" inch

Unless he meant a Female pipe nipple that could increase the pipe outside dimension to 1 1/4" inch.

Maybe someday we will just 3D print the Kent-Moore tool (scroll down) that we need to do the job.