This is what I found from Reese on the service from etrailer. My manual burned in a house fire last year. I was supprised to see this because I do not think my manual went into this detailed maintenance.
Reese recommends that to maintain easy hookup you frequently lubricate the wedge surfaces, back side of the king pin, and the skid plate surface. The bearing surfaces of the sidewinder arm can also be lubricated if stiff, using white lithium grease. Never use a lube plate with a Sidewinder. Page 4 of the linked instructions illustrates the lubrication points. I have also linked a brief article concerning Sidewinder lubrication.
The Sidewinder uses a top and a bottom wear disc and a pivot bushing. The Upper Wear Disc is part # 200959, the pivot bushing is part # 200843 and the lower wear disc is part # 113983. To replace the discs and bushing, you'd first remove the Sidewinder from your fifth wheel by removing the bolts that hold the king pin to the fifth wheel. You'll want to have a helper or two available, as the Sidewinder assembly will be heavy. You'd then remove the 3 or 4 bolts at the top of the turret, remove the plate and the top wear disc, followed by the pivot bushing. You should be able to pull off the turret, and remove the bottom wear disc/bushing. Re assemble in reverse order, replacing the wear disc and pivot bushing as you go. You will need to torque the bolts according to the instructions.
2014 Ram CID 4x4 long bed
2013 FR Rockwood 8281 w/Revolution pin
Sam (me) Diane (DW)
Sofie and Phoebe (fur Babies)