Which of the following actions is needed for a CV joint inspection?

For a CV joint inspection, one of the most critical tasks is to inspect the rubber boots for damage. CV joints, or constant velocity joints, are pivotal in transferring power from the engine to the wheels while allowing for the up-and-down motion of the suspension. These joints are typically covered by rubber boots that keep grease in and protect the joints from dirt and debris.

If the rubber boots are torn, cracked, or otherwise damaged, it can lead to grease leakage. Once the grease is lost, the CV joint can suffer from inadequate lubrication, which may result in premature wear and potential failure. Therefore, checking the condition of these boots is essential for maintaining the integrity and functionality of the CV joint assembly.

The other actions listed, while they are important checks in vehicle maintenance, do not directly pertain to the inspection of CV joints. For instance, measuring brake fluid levels and evaluating engine oil quality are crucial for overall vehicle operation but not specific to CV joint function. Similarly, checking tire tread depth relates to tire safety and performance, again unrelated to the CV joint's condition. Thus, inspecting the rubber boots for damage is fundamental for the health of the CV joints.