Hi Oil Changer, The retainers also act as spacers to position bearings where they should be. There can be spacer as well. So look what comes out. Very important on the right side as they locate the bearing left to right, which effects wheel left to right on axle. So you have to keep all those. You can leave the inner grease retainer out on snap ring side, but I always put it back in.
TLS on '58?? Not sure what you are working on?? Parts book doesn't show grease retainers on inner side of bearings.
I don't know it matters how you install grease retainers, shop Manual
way or your way. Removing the one side takes bearing out with axle. I have lots of driver tools so I use them. A larger driver for left bearing removal might distort grease retainer less?? I've not used the axle for a driver per se since I have drivers or use sockets on extension.
Some of the retainers can be deformed on removal. If you can straighten them, which is possible, you can reuse them. I've straightened them & they worked fine. I probably wouldn't order them until you do tear down. I expect you can straighten them. Only the inner left takes the bending for the most part.
The sealed bearings I've been involved with are exactly the same dimensions as the original un sealed. So a straightforward job.
On assembly shop Manual
has you install inner grease retainer, bearing, outer grease retainer, snap ring. Then... drive on grease retainer to move the assembly against the snap ring with axle. This can again bend the grease retainer you just straightened... I go easy on the inner retainer, not all the way in, then bearing not quite all the way in, finally carefully fit/drive outer retainer pushing bearing & inner retainer just slightly more. Just enough to fit snap ring. Then you don't really need to move the bearing back against the snap ring. It's already there. Just a thought.
Even though bearings are sealed, I smear grease retainers & axle with thin layer of Staylube water proof boat trailer bearing grease. Keeps things from rusting down the road.
I used to drive off the retainer nut with a punch since I didn't have proper tool. That's stupid. You can get the pin wrench tool for like $30 on ebay. Or make one. I buggered up the pin holes. I'm ashamed now. You should do better than I did.
Friend of mine made tool to hold axle from spinning removing brake plate if nut is tight. A block of metal with hole drilled in it size of axle. Cut slot in block & used pinch bolts such slot allows block to pinch tight to axle. Has holding handle attached to block. Works super good. Another for disc brake axle. That nut can be really tight.