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I am replacing my trailing arms with rebuilt complete assemblies. I have to pull the spindle flanges off the old spindles and use them on the new assemblies. I noticed that one of the flanges has some marks, I don't know if this is wear or if it's a minor casting defect. Look and see:
This is the side that mates to what I'm guessing is the bearing seal? It gets torqued down to 100 ft-lbs. I don't think this is a machined-to-macchined surface but I'm not sure. Anybody have advise? Should I have a machine shop shave off 1/16" (or file by hand) , buy new ones, or is it OK the way it is?