1966 Ford Mustang Gets 9-inch Rear- Tough As Nails! Photo Gallery
The final check for proper clearances and alignment is to paint the gears with a special lapping paint. We painted a section of the teeth on the ring gear and spun the pinion gear. The best way to do this is to use an impact gun on the pinion nut. Adjustments on the outer bearings and shim under the pinion can adjust this wear pattern.