Preping New Casting for Paint?

Searched but didn't locate any previous discussions. Need to install a new water pump on my 2010. This is a new pump, not recon. What is recommended prep of casting for primer and paint? This is a work tractor.

Thanks
 
If it is primed, remove the primer, treat with wax and grease remover, put on epoxy primer and topcoat. If rusty, sand or wire wheel, then same as above. It is done the same way as any other cast part.
 
Thanks. Is a brand new bare casting with no rust, no apparent preservative, no primer. So I will just use a good solvent/dewaxer, dry and prime. Just didn't know if there was anything on the surface that required special neutralizing.
 

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