Which driveline components must be free from wear or play during inspection?

During a vehicle inspection, the driveline components that must be free from wear or play are the drive shaft universal joints, constant velocity joints, or center bearings. These components are essential for the proper operation of the vehicle's driveline system, which is responsible for transmitting power from the engine to the wheels.

Universal joints and constant velocity joints allow for flexibility and rotation without binding, accommodating for changes in drivetrain angles during vehicle movement. Any wear or excessive play in these components can lead to vibration, noise, and even failure of the driveline system, which can affect vehicle safety and performance.

Center bearings support the drive shaft and help maintain its position; wear in these components can also lead to misalignment or additional stress on the driveline. Ensuring these components are in good condition is vital for a smooth and safe driving experience.

Other components listed, such as transmission gears, engine mounts, and exhaust hangers, are important for their respective functions but are not classified as driveline components directly involved in the transfer of power from the engine to the wheels in the same way as the drive shaft joints and bearings.