U-bolts should be replaced every time that the springs are replaced.

U-bolts should be replaced every time that the springs are replaced.

• A. Bolts
• B. Springs are replaced
• C. Shackles
• D. U-bolts

Answer: (D)

U-bolts are the fasteners that clamp the leaf-spring pack to the axle, keeping the suspension aligned and the spring under proper load. When you install new springs, the assembly changes height and rigidity, and the old U-bolts may have been stretched or fatigued from prior use. Reusing them can weaken the clamping force, allow the spring pack to shift, or even lead to fastener failure under load. Replacing the U-bolts ensures a fresh, true clamp with the correct thread engagement, so the springs stay securely seated and the axle remains properly aligned. After installation, torque to specification and verify even loading on both sides.

U-bolts are the fasteners that clamp the leaf-spring pack to the axle, keeping the suspension aligned and the spring under proper load. When you install new springs, the assembly changes height and rigidity, and the old U-bolts may have been stretched or fatigued from prior use. Reusing them can weaken the clamping force, allow the spring pack to shift, or even lead to fastener failure under load. Replacing the U-bolts ensures a fresh, true clamp with the correct thread engagement, so the springs stay securely seated and the axle remains properly aligned. After installation, torque to specification and verify even loading on both sides.