Friggin pinion nut not breaking loose....

Thanks for all the suggestions everyone. Looks like a big mother f'ing impact is in order. I have a compression, but not a big impact. I'll either buy one or bring it into a local shop the has helped me out over the years.

Take care be well all,
Pat

The Ingersol Rand IM231 at "somewhere" above 120 PSI will probably do it.