When replacing a CV joint boot, what must always be inspected?

When replacing a CV joint boot, it is essential to inspect the condition of the CV joint itself to ensure that it has not been damaged or worn. The CV joint plays a critical role in the drivetrain by allowing for smooth movement while accommodating the up and down motion of the vehicle's suspension. If the joint is compromised, it could lead to further issues, including noise, vibration, or even failure of the joint itself if not addressed.

Inspecting the CV joint helps confirm that the joint is still functioning properly and that there are no signs of excessive wear, such as cracks or damaged bearings. Addressing any concerns at this stage can prevent more significant problems down the road, which could lead to costly repairs or potential safety hazards while driving. This thorough inspection ensures that the new boot installation is not only effective in keeping contaminants out but also serves to protect and maintain the integrity of the existing joint.