No that is measured with a dial indicator on the perimeter of the ring gear tangent to the gear diameter. with the pinion (shaft) held still. Any tooth on the ring gear will do for the measurement, as long as the dial probe is tangent to the gear. See some diferential setup procedure in a auto or tractor manual. I definatly agree that the pattern is far more important than the backlash. Prussian blue marking paste (in a tube) is great for reading patterns. JimN
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Today's Featured Article - Fabrication (Who Me? Make it myself?) - by Chris Pratt. First of all, what are the reasons for not fabricatin your own parts? Most judgements on what should be purchased rather than fabricated stem from: Originality - If the tractor restoration is to be 100% original, it is likely that you should spend the time and money to locate the component in the used or New-old-stock market. Since this can be extremely difficult, you may want to fabricate the item or purchase a modern replacement temporarily, but eventually, you s
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