M939 Rear Leaf Spring U Bolt Retaining Nuts, Hex Size?

[74M35A2]

Replacing all 12 torque-rod (dog bone) end links this weekend, preparing tools now. Anybody know the nut size hold the rear leaf spring pack together? I may need to take this apart to get to the upper center link end castle nuts. Not enough time to cut them off and replace, so they will be disassembled and reused. I'm at work, and forgot to measure them on my way out the door this morning. Thanks.

 

[M35A2-AZ]

1 5/16" Deep Socket. and like 400 lbs feet to put them back on

 

[Swamp Donkey]

Make the wrench and you don't even have to get out the jack. Take another look at that heavy spring pack and CARCed over nuts and U-bolts. It's not worth it. Make the wrench...