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.


Gord 🇨🇦
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1954 1/2 ton 235 4 speed