What is an essential characteristic for inspecting air bellows?

An essential characteristic for inspecting air bellows is that they should be fully inflated and securely mounted. This is crucial because air bellows are a key component of the suspension system in commercial vehicles. When they are fully inflated, it indicates that they can adequately support the weight of the vehicle and its cargo, thereby providing stability and comfort during driving. Additionally, secure mounting ensures that the bellows are properly positioned and not at risk of detachment or damage while the vehicle is in operation.

The integrity of the bellows directly impacts the vehicle's handling, braking, and overall safety, making it imperative that they are in the right condition during pre-trip inspections. This vigilance helps prevent potential issues that could arise from operating with compromised bellows.