A wrecked right side bearing locknut 47515-52 [52 to E74] with a fitting welded into it.
Slots were cut into the threads and it is used to chase / repair the threads in the swingarm. ¹⁾

Swingarm thread repair tool 2)

Swingarm thread repair tool 3)

93-03 swingarm pivot bolt wrench sizes.
To remove the pivot bolt, remove the pivot bolt screw and turn the bolt a few turns to loosen it up.
Put the pivot bolt screw back in a few turns and whack it with a hammer to initially drive it toward the right side.
Then use a screwdriver to pry the bolt out while turning the screw. Continue turning while giving up pressure on the wrench to back the bolt out.
^{4) 5)}

^{6) 7)}

See also 1998 1200S Swingarm Bearing / Bushing Inspection and Replacement in the Sportsterpedia.

The bushing is pressed in and likewise will have to be pressed out. They make a special tool for removing / installing the bushing.
The rig below can also be used as a remover / installer tool.

• Parts:
  
  • A length of 3/8“ threaded rod.
  • (2)- 3/8” nuts and washers
  • (2)- Sockets (you'll have to measure what you have on hand for proper fitment).
    • 1 has to either fit inside (outer races removed) or outside (outer races installed) of the right pivot.
      The one used below was set against the bearing lockring in the middle of the right pivot.
      Caution, do not use a socket on the inside if the races are installed. That could mar the internal bearing surface.
    • The other has to fit inside the right pivot and only a few thousandths (preferably) smaller than the bushing O.D.
      Too small and it will mushroom the inside of the bushing.
      Too big and it'll get stuck in the pivot.
      Caution, measure to make sure it's smaller than the I.D. of the pivot before using it.

^{8) 9) 10)}