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1989 Ford F 250 Slide Out Axleshaft

Slide the axleshaft out and set it aside. Although the Sterling's axleshafts are 1.5-inch, 35-spline at the carrier, they neck down to about 1.36 towards the hub to allow for some torsional twist and flex. The torsional twist helps soak up shock loads that, if transferred directly to the carrier, could damage ring-and-pinion teeth.
1989 Ford F-250 Disc Brakes - Tech Stopping The Sterling

 Slide the axleshaft out and set it aside. Although the Sterling's axleshafts are 1.5-inch, 35-spline at the carrier, they neck down to about 1.36 towards the hub to allow for some torsional twist and flex. The torsional twist helps soak up shock loads that, if transferred directly to the carrier, could damage ring-and-pinion teeth.  View Related Article

 

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