J Starbuck, on another thread here, posted the following solution for separating wheel/axles from the gear section on loco trucks. He made hardwood angle blocks to do the job but since I have a 3D printer I thought I'd try that approach. It was about a 10 minute job to design the angle blocks using Fusion 360. It took the printer about 3 hours to print both of them but I printed on the highest quality. I thought I'd also post it here in the 3D Printer section as it probably fits here better in the long run, but remove it if it is a problem here. I had a SD45T-2 with a broken frame so pulled a truck off of it to try out the blocks. I couldn't believe how easy it was to separate the wheel/axle from the center gear section. Slide the two blocks towards each other with very little pressure and the parts come apart in a very controlled manner. I also found that the angle block worked great pressing the parts together. Put the center of the wheel in the slot and press. Thanks J Starbuck for bringing this to my attention. You can find the files to print this on my thingiverse account ( HERE ) and info on my web site ... http://1fatgmc.com/RailRoad/Locos-1/page-3.html You can find all the files to 3D print this object and others on my thingiverse.com account ( HERE ). Sumner