If we are talking about the rear springs on a 3/4 Ton, the shackles are completely different than the front. You shouldn't need that puller at all. Remove the lockpins and then you can drive out the pins from the inside or backside using a brass drift. I took my shackles and springs to my spring guy to have the bushings replaced. I supplied the parts. They came from Jim Carter and also Espoe spring. My spring eyes were worn oblong a bit and the spring guy just tightened the curl before installing the bushings. I asked him if he used heat to do tighten the curl and he said absolutely not!
