You should be able to source the additional leaf through any Old Man Emu or ARB suspension dealer. You will need a longer center bolt of the proper diameter. I buy the ones that are too long and then cut them after everything is installed and the pack is back together.
Caution. Spring tension is powerful and can be dangerous if something gets loose!
This can be done on the truck.
After the U bolts are removed and the axle unattached from the spring.
I clamp the spring pack on either side of the center bolt with 2 large C clamps to hold the spring tension.
"Slowly" Remove the center bolt and replace with the new long one and a washer and non locking nut. Tighten sorta snug.
Remove the C clamps and then slowly Loosen the new center bolt. This will safely release the tension from the spring pack. This is where the long bolts come in.
Once loose you can then take the pack apart and install the extra leaf in the right spot.
A jack can help here. Springs are heavy.
Then reassemble with the long center bolt and slowly compress the pack back together. Big washer under the nut helps.
Reclamp the C clamps so you can remove the non locking nut and big washer. Then install a locking nut and tighten it all up firmly.
Cut off the excess bolt with a hacksaw and release the C clamps. Now you can reattach the axle. Use new locking nuts on the U bolts.
Be sure your U bolts are still long enough after adding the extra leaf!
This assumes you have some mechanical experience and tools and are capable of dealing with attaching the axle with the U bolts ect. It's not a step by step for the total novice. Just helpful hints for those who basically know what they are doing.
Pics are from a used set of OME springs I rebuilt a while back.
In this case I used all thread to compress the pack. this was just a test fit. I was adding spring liners between the leaves. Old school no longer made stuff. Just the pics i had on hand.
Edited by Squatch, 17 February 2018 - 11:57 PM.
