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We installed our pinion, lightly torqued down the yoke without the oil seal or crush sleeve, set the backlash to 0.007 inch with the adjuster nuts and ran a pattern. It indicated that we needed to add shims under the pinion bearing to move the pinion closer to the carrier. Unfortunately, we didn't know that unless you buff off the blackish coating that comes on some aftermarket pinions, the bearings are nearly impossible to press off. None of our garage tools would do it without toasting the bearing, so we were off to MIT.

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