RP 1419 - Trailer Towing With Light - And Medium-Duty Vehicles: Axles: Maintenance
Periodic inspection and maintenance of the axle assembly should be performed in compliance with the axle manufacturer's recommendation. This may include, but not be limited to, inspecting the hub/drum for abnormal wear or scoring, inspecting the wheel bearings and cups for corrosion or wear, inspecting seals for leakage, inspecting springs for wear and loss of arch, inspecting welds on the hangers or mounting brackets, inspecting the suspension parts for bending and loose fasteners causing wear, tightening wheel nuts and bolts to the specified torque values, inspecting wheels for cracks/dents/distortion, inspecting tires for cuts/wear/bulging/specified tire pressure.