6bronco6 said:
Is it as simple as lifting the frame, unbolting the retainer cups, letting the axle hange, and slide out the old, and in the new?
Jack up the Bronco and put jack stands under the frame. I use standard 3000 lb jackstands, and put them on top of 4 pieces of 2x12 to get a little extra height.
Remove the wheels to get access to the springs.
Put a floor jack under one side where the radius arm attaches to the differential for a little support. Unbolt the top coil spring retainer (two bolts), then unbolt the bottom coil spring retainer (two bolts).
Remove old coil spring.
Do whatever cleanup you want (paint coil spring retainers, etc)
Place bottom coil spring retainers in place and start the two bolts 3 or 4 turns. Leave them very loose.
Place the new coil spring on top of the retainers and "screw" the coil spring in between the retainers. You will be able to see and feel when the coil spring is in the proper position.
Position the top of the spring into the spring tower. Follow the Tech link for tips on how to bolt up the top retainer.
Tighten the bottom two retainer bolts.
Do the same for the other side.