What components should be checked on the frame during an inspection?

During a commercial inspection, the frame of a vehicle is a critical component that requires careful evaluation for structural integrity and safety. Checking the fasteners, locking pins, and adjustable axle assemblies is essential because these elements are crucial for maintaining the stability and security of the entire vehicle structure. Fasteners must be examined to ensure they are properly tightened and not corroded, as loose or damaged fasteners can lead to frame distortion or failure while the vehicle is in operation.

Locking pins are vital in securing various components of the frame and ensuring that parts remain in their intended position under stress. Adjustable axle assemblies play a significant role in the alignment and handling of the vehicle, and checking these components ensures that they are functioning correctly and do not present risks to the vehicle's performance or safety.

In contrast, while wiring and electrical connections, fuel lines and exhaust systems, and body panels and side mirrors are all important aspects of a thorough vehicle inspection, they do not relate specifically to the frame's integrity and functionality. The primary focus should be on components directly associated with the frame, which supports the overall structural integrity of the vehicle.