[Tom Wesenberg]

I usually pull the 4 brushes back far enough to cock them in the holders, so they aren't actually in place. Then I can slip the end plate on and bolt it in place. Then I use a hook to left each spring and slip the brush into the holder. Be sure the springs are centered on the brushes, or the brushes will wear at a slant.

Clean the grease off the helix, and you should be good to go. I like a bit of thin oil on the helix to make sure it doesn't rust.