Just pulled down Ford 10.25 Sterling full floater to replace ring and pinion gear to higher numerically ratio. There was great difficulty In separating "ring" from carrier, and originally thought a previous builder had locktited entire ring mounting surface. With much cursing and gnashing of teeth, finally got it apart without breaking tone wheel. It appears the carrier had swelled beyond the inside diameter of the ring gear.
I have stoned the mounting surface, radiused the junction of carrier and ring inside diameter where ring had made impression on it.
And then as a precaution, dusted mounting surface with contrasting color, and will stone again.
It is my supposition that somewhere in the past, this rear end has been overheated and caused this situation.
Has anyone experienced this difficulty?
Also, just thought of another curiosity. After pulling carrier from housing, the pinion gear almost fell out in cavity. Upon removal, the large pinion bearing (rear)came off with no prompting-just "slud" off. The pinion gear did show ford logo, but the ring gear did not.