There are two main ways to repair a CV boot:
1. Replace the CV boot. This is the most common and recommended repair method. It involves removing the old CV boot, cleaning the CV joint, and installing a new CV boot. The new CV boot should be made of high-quality rubber and be resistant to tearing and cracking.
2. Patch the CV boot. This is a less common and less recommended repair method, as it is not as effective as replacing the CV boot. To patch a CV boot, you will need to clean the CV joint and apply a rubber sealant to the damaged area. The rubber sealant should be allowed to dry completely before the vehicle is driven.
It is important to note that repairing a CV boot is a temporary fix. The best way to prevent CV boot failure is to inspect them regularly and replace them as needed.
Here are the steps on how to replace a CV boot:
1. Park your vehicle on a level surface and apply the parking brake.
2. Chock the wheels to prevent the vehicle from rolling.
3. Jack up the vehicle until the wheel is off the ground.
4. Remove the lug nuts and take off the wheel.
5. Remove the axle nut.
6. Pull the axle out of the hub.
7. Remove the CV boot from the CV joint.
8. Clean the CV joint and the CV boot mating surfaces.
9. Apply a new CV boot to the CV joint.
10. Reinstall the axle.
11. Reinstall the axle nut.
12. Reinstall the wheel.
13. Lower the vehicle and remove the chocks.
14. Test drive the vehicle to make sure the repair is successful.
If you are not comfortable performing this repair yourself, you should take your vehicle to a qualified mechanic.