Originally Posted by NVGun40
You can do it, and usually it won't cause any problems. There is a possibility that raising it by one axle could cause unnecessary torque on the walking beam (the center beam between the two axles that the leaf springs attach to) causing it to jam against the frame and twist. But I ask, what is the reason for jacking it up? If you are raising it to change a tire, you don't need a jack at all with a dual axle. Just drive the tire you are not changing up onto some blocks or stand or other very handy market devices to raise the flat tire off the ground.
If you are raising it for the purpose of storing it, then once lifted, place jack stands under the frame.
If you are raising it to service the bearings or brakes, then you should still place jack stands under the frame just behind and in front of the wheels.
By driving the good tire up on blocks aren't you effectively doing the same as jacking up the bad axle? You're just doing it to the axle with the good tire instead of the axle with the flat tire. Am I missing something?