[paul2748]

To use the all thread method:

Put c-clamps on both sides of the center bolt
Remove center bolt
Put all thread in center bolt hole with nuts on both sides (flat washers under the nuts make them go easier). Tighten nuts.
Remove clamps
Loosen one nut on all thread until all tension is off the leaves
Remove leaves
You can now remove main leaf by hand

To put spring back together:
First put main leaf on
Put other leaves on in order
Put all thread ( with a nut on one side of leaf package) in center hole, lining up the leafs.
Put nut on other side of leaf package and tighten until fully compressed
Put c-clamps on both sides of all thread.
Remove all-thread and insert center bolt
Tighten to spec.
Remove clamps.