Originally Posted by Gord&Fran
I didn't need any special tools to rebuild my SM420. I don't have a press. The legs on my puller were too short so I made extensions for it. Used some steel pipe for installing the bearings. Warmed up the bearings with a heat gun and they slipped on easily. Lots of videos on YouTube on disassembly and reassembly.

I have a press and gear pullers. Getting the mainshaft assembly out of the case is my sticking point. I've watched many, many Youtube video's and every one I've watched skips that step. I think I'll make my own version of a J2677 "puller" and make it happen.

Thanks for the input on heating the bearings, its a good method!

Ron - - Dusty53
1954 Chevy 3604
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