Universal joints allow drive shafts to move up and down with the suspension while the shaft is definitely moving so power can be transmitted when the drive shaft isn’t in a right line between the transmission and drive wheels.

Rear-wheel-drive vehicles have universal joints (or U-joints) at both ends of the drive shaft. U-joints connect to yokes that likewise allow travel shafts to move fore and aft as cars go over bumps or dips in the U Joint china street, which efficiently shortens or lengthens the shaft.

Front-drive vehicles also employ two joints, called constant velocity (or CV) joints, but they are a unique kind that also compensate for steering adjustments.

On rear-travel vehicles, one sign of a put on U-join is a “clank” sound when a drive equipment is involved. On front-drive automobiles, CV joints sometimes make a clicking noise when they’re donned. CV joints are covered by protective rubber boot footwear, and if the footwear crack or are otherwise broken, the CV joints will lose their lubrication and be ruined by dirt and wetness.
A U-joint is found in both front wheel drive and rear wheel drive cars. Although they will vary in design, they have the same reason for giving the drive teach some flexibility. That is needed as all cars and trucks flex while in movement.

U-joints are found on each of the ends of the rear travel shaft, whereas CV-joints are found on front wheel drive autos. Each allows the drive shaft to rotate as the differential moves in relation to the others of drive train installed on the chassis.

The U-joint functions to save wear and tear on your own vehicle’s transmission. Failure to have a universal joint alternative done when necessary can cause substantial damage to your car in the future.
There are a few warning signs that U-joint or CV-joint is failing. They include: