The majority of newer automobiles, which are front-wheel-drive, all contain constant velocity joints (CV joints) that are responsible for positioning engine torque on the front axle. The CV joint is a highly lubricated component that is covered and sealed by a rubber boot. It is located just inside both front wheels. By turning the wheel to the outside, you are able to peer down the wheel well and view the CV joint boot. The boot should be dry, but if it is not shielding the joint properly, you will notice grease that has escaped in the vicinity of the boot.
Should I have the drive axle boots examined if a professional has suggested it?
It’s the smart thing to do.
Why should I have them checked out?
The boots succumb to the elements after a while, causing them to crack or rip apart. Once the boot breaks, grease is able to exit, and the joint becomes engulfed by water and grime. In a short period of time, the joint loses its mobility and could even become nonfunctional. Inspecting the boots is simple enough that you will be able to tell immediately how severe the problem actually is. If you catch the problem early, you will only have to replace the boot, which is much more inexpensive than a new CV joint.
What will happen if I don’t bother repairing the broken boot?
If the boots bust apart, the grease lubricating the joint will leak, and CV joint will be vulnerable to dirt, moisture, and whatever other pollutants that a car may come in contact with. The joint will not be mechanically sound if it is missing the boot and grease, and it will soon stop working. Once the joint fails, you could end up spending as much as a few hundred dollars to purchase a new axle shaft.
Will I have to bring my vehicle for service in between the recommended maintenance intervals to check the CV joint?
No, but this doesn’t mean you shouldn’t continually monitor the boots for flaws.
Quick tip
Ask a mechanic to do you a favor next time you bring you r car in for an oil change, and have him check the condition of the CV joint boots.