I did the front end on my 3600 last year. Pulled the axle, separated the spindles from the axles, drifted out the bushings and cleaned everything. Then let discretion be the better part of valour and took the axle and all parts to a truck suspension place here in Calgay. They pressed and reamed the bushings and reassembled everything with their big tools. Happy to pay that bill for what holds up the front of my truck.

Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.