The run-out should be the measure of how much left and right the ring gear can move in the bearings. The dial indicator should be against the back for this. Lash (or backlash) should be the amount the ring can rotate withouth the pinion moving.
Standard disclaimers apply.
Current fleet (subject to change w/o notice) \'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run. My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787. Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.
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