Synergy 8009-30 - Jeep JK Front Axle Outer Shell Kit - Manual (Page 7)

12. Weld the seam between the two outer shell halves. The narrow seam is intended to
just weld the two shell halves to each other; the wide seam is intended to weld the
outer shell halves to the axle tube. Start at center and work your way out by welding
one section at a time (about 1 ½” of weld per section). Alternate welding the same
section front to back and side to side. Since you are welding on opposite side of the
tube it will not bend the axle tube.
13. Weld the holes on the top and bottom of the tube shell, try to weld the axle tube to the
shell and not just fill the hole.