Maintenance 131 Chassis Maintenance Springs Note: This work is best performed by a Volvo Truck dealer or other service outlet having the proper equipment. The spring package is fastened to the axle beam with U-bolts. It is important that the U-bolt nuts are properly tightened. The nuts may loosen up with time. Severe roads and service will loosen them faster. Loose U-bolts can cause springs to break, axle misalignment, hard steering and abnormal tire wear. Inspect the chassis for broken springs, shocks, loose or broken axle U-bolts. If any of these are found, contact your local Volvo dealer.
The U-bolt nuts, front and rear axle(s) must be retightened to the proper torque specifications after the first 15,000 miles (24,000 km).