This is a way of marking territory if they are rubbing the sides of their faces on the object. Cats have scent glands around their lips and on their chins. The facial pheromones that they mark with are signals of a happy or calm cat to other cats.
The part that simultaneously enables the axle to flex while transmitting the driving force is called a drive axle joint, and is also known as a constant velocity (or CV) joint. The CV Boot is a ribbed, rubber flexible boot that keeps water and dirt out of the joint and the special grease inside the joint.
Ball-type CV joints are commonly used on the outer side of the drive shafts, while the tripod-type CV joints mostly used on the inner side of the drive shafts in front-wheel drive cars. A CV joint is packed with a grease and sealed tight by the rubber or plastic boot.A CV joint doesnât need any maintenance and can last very long, as long as the protective CV joint boot is not damaged. A most common problem with the CV joints is when the protective boot gets damaged.all-type CV joints are commonly used on the outer side of the drive shafts, while the tripod-type CV joints mostly used on the inner side of the drive shafts in front-wheel drive cars. A CV joint is packed with a grease and sealed tight by the rubber or plastic boot.