I am currently trying to rebuild/repack this mast. The Rear cylinder body holds the second stage of the mast up by means of a "ring pivot" part 828-009-260. On my particular lift, the "ring pivot" is being held up by a circular spring retainer. No body can seem to find this part, all the dealers books point to a retaining plate, held in by two bolts. This is not what I have. My cylinder body has a groove cut into it for this retainer spring, and there was no plate.