2.Mechanic Ralph Isaula decided to tackle the back of the truck first. The leaf springs need to be removed so the stock shackles and hangers could be swapped out for the DJM units. Since the truck is on a lift, the rearend was supported with a transmission jack. Usually a squirt or two of lubricant and an air impact gun is enough to loosen the hardware. The impact hammered away making a bunch of noise and luckily the shackle nut finally broke free and came off.