National average cost of a CV Axle Boot Replacement for popular vehicles:
What is a CV axle boot and how does it work?
A CV axle is a component of front-wheel-drive and all-wheel-drive vehicles. Also known as “half shafts”, these axles transfer power from the transmission or transaxle to the wheels. An individual axle is made up of a short, solid metal shaft with a special joint - the Constant Velocity joint - at each end. These joints allow for all of the up, down, in, and out movement of an independent suspension. They pivot in any direction to compensate for the suspension and steering while maintaining a consistent, or “constant”, velocity. Each CV joint on the axle is lubricated with grease and is encased in a rubber boot that also serves to keep it free from debris. This boot is called a CV axle boot.
Signs that a CV axle boot needs to be replaced
Most passenger cars and SUVs on the road today feature either front-wheel drive or all-wheel drive. If your vehicle falls into one of these categories, it also features CV axles with axle boots. Those components are important to proper function of the drivetrain, including the steering, suspension, and transfer of power to your wheels. When a CV axle goes bad, you might notice one or more of the following signs
A clicking sound that can be heard when your vehicle is accelerating through a curve
A clunking noise upon deceleration
Excessive vibration at high speeds
Grease leaking from one of the rubber boots
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There are 50 shops within 20 miles of your location.
CV axle boot replacement is not generally a simple procedure. The CV axle must first be removed from the vehicle. Because of this, and the fact that the cost of a new CV axle is not prohibitive, many technicians will recommend replacing the entire axle assembly rather than the boot(s). If one or more of the boots are to be replaced, a mechanic will lift and support your vehicle off of the ground and remove the wheel and tire. While the procedure for replacing a CV axle boot differs from one make and model to the next, the mechanic will need to do the following
Remove the large nut retaining the CV axle and carefully loosen the axle inside the wheel hub
Set back any wiring that is in the way
Remove bolts to detach the steering knuckle from the strut assembly
In some cases, remove the tire rod end and lower control arm/ball joint from the steering knuckle
Work the outer end of the axle shaft out of the steering knuckle
Dislodge the CV axle from the transmission/transaxle or differential (may be bolted or retained with an internal clip
Remove the retainers that hold to boot(s) to the axle
Disassemble the CV joint(s)
Slide off the old boot(s) and clean off the grease from the joint(s)
Fill the new boot(s) with grease, insert onto the axle, and fasten with new retainers
Reassemble the CV joint(s)
Insert the inner end of the new axle shaft into the transmission/transaxle or differential, taking care to avoid damaging the part or the retainer
Insert the outer end of the shaft into the steering knuckle
Reinstall all other components and torque the fasteners
Check and top off the transmission fluid
OTHER QUESTIONS CUSTOMERS ASK
What parts are related to a CV Axle Boot Replacement?