I have got a noisy bearing on my relatively new ac compressor on my 85 300d. Unfortunately, the compressor is just out of warranty. Is the front bearing on these reasonably serviceable? Hoping to repair this one...

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1985 300D 296,000 miles - Project "Rusty" 1/4 mile in 19.9 sec @ 71mph. It's almost rust free and water proof!

2006 Dodge/Cummins 6-Speed - 670HP 1159ft/lbs