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Solid Spacer Compared To Crush Sleeve

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For comparison, here is a photo of the solid spacer setup that goes in to every Dynatrac axle. The machined spacer is sitting on the pinion in the background, as well as in the center foreground. On the left is a typical shim and on the right is a crush sleeve. The benefits of a spacer are that once the pinion is setup with the proper spacer, it is set for life, making the replacement of a yoke or yoke seal in the future a lot easier, as you simply torque the pinion nut to spec.