If you start to tear it down you will keep encountering items that you will want to replace. Before you know it you will be into rings, bearings, all the seals, etc, and lots of $.

As indicated, stick to items like timing set, that need to be replaced every so many miles anyway.

Then degrease it and paint it!

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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes