Originally Posted by Warlock III
There is a metric equivalent I think it's like a 36mm but not sure right now.
The axle shafts for the 1500/2500 are usually only a difference of one has 3 and the other has 4 on the hub. They come apart the dame way though. I always recommend taking the axle nut off/loose while it's still on the ground. Otherwise you might have to stick a punch/chisel in the air slot (in the rotor) and get it to come around to the caliper, etc... to keep it from spinning.
That works, or if you have an extra person, you can get them to apply the brakes while you work on the nut.