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U Bolt Install

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With the springs in position, we jacked the rear axle into place and installed the U-bolts. We needed 9/16-inch, 3 1/8-inch wide by 9-inch long U-bolts because the Skyjacker parts that were included are not intended to be used on the J-20's larger Dana 60 rear axle. Torque the nuts to 80 lb-ft in a criss-cross pattern, making sure the center pins are lined up with the spring perches and U-bolt plates.