How to remove seized cross bar on a rotary cutter (bush / brush hog)

Removing a cross bar that holds the rotary cutter blades off the vertical spindle or bottom gear shaft. This is a Woods M5 Dixie Cutter rotary cutter (Brush hog, Bush hog, Brush cutter, etc). This particular model had a cross bar that is pressed onto to the vertical shaft coming out of the bottom of the gear box, and you have to get creative to remove it. I noticed the replacement cross bars now have a split design on the top of the bar that has bolts to clamp it onto the vertical shaft so the bar itself is no longer pressed on. Tools used: 4" steel square tubing that was a cutoff section of a commercial light pole that you would find in a parking lot. Harbor Freight 12 ton bottle Jack https://www.harborfreight.com/12-ton-... Harbor Freight log chain https://www.harborfreight.com/3-8-eig... Deep well impact socket that is just slightly smaller than the shaft size, so it doesn't get pressed into the cross bar and get stuck.