The bearing race for the unloader swivel has threaded studs welded to it. When you remove the nuts, the tube and outer half of the swivel comes apart from the innner half - the swivel bearing stays intact unless it is worn to the point where it will open up slightly and you loose your balls - literally! If I remember correctly, the snap ring that holds the ram comes off - remove the hose clamp that holds the rubber boot around the ram, disconnect the hyd. hose, and you can then wiggle the ram out through the rubber boot up into the hopper. That is some of the toughest rubber known to mankind too - it may take some work getting the ram either in or out of it. Maybe some soap to lube it would help, but when we took ours apart, we didn't have soap readily available. Also, it seems there is an air bleed or something threaded into the bottom of that ram that needs to come off to get it through the boot. You don't need to remove all the rivets to get it apart. Good luck!