Reply to "Rear hub bearings"

Bob, pressing the rear axles out needs care. Too much pressure on the cast iron brake disc can crack it into many pieces. I push all 5 wheel lugs loose first to reduce the force needed, and made a fixture to put the press load on the tapering shoulder of the stock disc.
Once out, you'll likely find the bearings are fine but the mild steel axles have a worn spot right where the much harder bearing races run. Only 0.010" wear is enough to cause wheel wobble. Many Panteras were produced with the wrong press-fit axle OD to the bearings, resulting in wobble and fretting of the axles. Axles can be welded, plated or spray-welded, then reground to make the required 0.0005-0.0008" interference fit needed with new bearings. The better alternative is new axles made of 300M steel to the correct press fit. All the Pantera vendors now sell them. Billet 4130-steel axles are also available and are suitable for street or pro-racing. Knurling, Lock-tite and other substitutes for the proper interference fit will last maybe 100 miles. Finally, axle nuts can be either left hand or right hand, code-stamped on the threaded end of an axle: S= left hand and D= right hand threads, torqued to 350-450 ft-lbs.