Just the usual, make sure the rotor doesnt have any grooves in it. Check the bearings to make sure there is not too much slop. If you are real carefull with the wear sensors, you may be able to reuse them, but nice to have a couple spares in case you break any in removing.

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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