REAR AXLE AND SUSPENSION REAR AXLE AND SUSPENSION WARNING! Failure to maintain the specified torque values or to replace worn parts can cause component system failure, possibly resulting in an ac- cident. Improperly tightened (loose) suspension U-bolts can lead to un- safe vehicle conditions, including: hard steering, axle misalignment, spring breakage or abnormal tire wear. See Front Spring Suspension U-bolts on page 5-118 for proper torque specifications. Failure to comply may result in death, per- sonal injury, equipment or property damage. Do not operate the vehicle if the U-bolts are not properly tightened.
Loose U-bolts will cause the axle to not be properly secured to the suspension, which could cause loss of vehicle control and an accident. Loose U-bolts can also cause un- even tire wear and poor alignment. Failure to comply may result in death, personal injury, equipment or property damage. WARNING! General Maintenance WARNING! Do not work on the vehicle without the parking brake set and wheels blocked securely. If the vehicle is not secured to prevent uncontrolled vehicle movement, it could roll and may result in death, personal injury, equipment or property damage. CAUTION Your vehicle's suspension, by design, requires a minimal amount of maintenance.
However, suspensions in over-the-road operations require periodic inspection to ensure trouble- free performance. Do not spray the suspension with chemical products or mineral oil; it can cause damage to the bushings. 5 NOTE Failure to follow these recommenda- tions could void warranty. (03/17) Y53-6077-1B1 5-131