What condition should the universal joint (U-joint) be in according to inspection requirements?

The universal joint (U-joint) is a critical component in the drivetrain of a vehicle, allowing for flexibility and movement between different parts of the drive shaft. It is essential for the U-joint to be in good condition to ensure smooth power transmission and to prevent mechanical failure.

The correct state of the U-joint during inspection is that it should be able to rotate freely. This means that the U-joint should not have any obstructions or excessive resistance when it is moved, allowing it to function effectively without causing unnecessary strain or stress on connected components. If the U-joint is functioning properly, it ensures smooth operation of the drive train and contributes to the vehicle’s overall reliability and safety.

Any issues such as being cracked, broken, loose, worn out, or not throwing grease indicate that the U-joint is not in optimal condition and might compromise vehicle operation. Therefore, the ability of the U-joint to rotate freely is a key factor in maintaining the integrity and performance of the vehicle.