A lot of machinery or vehicle users experience universal joint failure. U-joints that are poorly designed and have low quality might lose their utility. Stay tuned in this article to learn the causes of U-joint failure as well as how to fix them.

How does a Universal joint function?

A universal joint performs by allowing the driveshaft to support the movement that it’s not normally capable of. This setup is critical since the driveshaft alone would flex or break under imbalance or bumps when driving. Universal joints make up for this movement, allowing the driveshaft to rotate smoothly under any circumstances.

The main purpose of universal joints is to convey rotating movement of the drive shaft. During spinning, it permits the drive shaft to move at an angle which generally distributes torque to meet the requirements in managing noises, bumps, and vibrations.

Furthermore, universal joints’s function is to make up for the alignment errors and to improve the transmission of the torque or spinning movement. The universal joints are held together by caps and consist of a cross-shaped spider bearing with rollers on each side.

What causes the Universal joint to fail?

Every automotive part, including the universal joint, typically become damaged or worn over time. But severe vehicle usage often causes wear on the engine’s shaft angle. Some issues happen due to lack of lubricant to the bearing and less maintenance to the engine. As always, if the vehicle’s owner can determine the source of a universal joint failure, they may effortlessly prevent the problem and choose an appropriate solution to repair the damage.

The Importance of Knowing the Causes of Universal Joint Failure

If you cannot address the root of the cause that leads your universal joint to fail, the freshly installed joint will fail as well. When you’ve identified the source of the problem, an easy solution could be putting grease on your universal joints or adjusting the angle.

Thus, it is important to know what causes your U-joint to fail rather than ignoring a malfunctioning universal joint. It could result in more costly repairs or may even cause death due to loss of control of your vehicle. When you have noticed something’s wrong with your drive shaft’s universal joint, you need to replace them right away.

8 Main Causes Why Universal Joint Fail and Their Solution

Once a universal joint results in failure, the car may lose control, leaving the driver stuck. Also, there could be numerous more unpleasant consequences. This explains why learning what causes the universal joint to fail is critical for safe and secure driving. Allow us to address the common causes of universal joint failure and their solutions below.

●      Excessive torque

A universal joint will probably collapse once the system applies too much load or pressure on it. Also, when the yoke’s ears tear, full damage will generally manifest on your engine’s vehicle.

Moreover, an excessive torque has the potential to deform in an unhardened metal joint or stainless steel, which will be seen as inadequate movement of the parts or components, causing the limited ability to operate.

Solution: To avoid major damage, you need to do multiple steps, including overloading of clutches and torque limitation.

●      Water or dirt contamination

This is also known as spalling, and it occurs when the surface of the bearing of a universal joint is scraped away due to dirt and water contamination.

Solution: inspect the universal joint kit seals for breakage and replace them if needed. Take note of the service mechanic to ensure that they are using the correct lubricant.

●      Corrosion

Corrosion is a major problem with universal joints. Even if no harsh substances are present, some parts may damage gradually based on the degree of the moisture in the surroundings.

Solution: Replace your universal joint with a stainless-steel universal joint to avoid rapid corrosion.

●      Fractures of universal joint

Typically, shock load can lead to fractures of universal joints, however, they can also be due to incorrect installation like bearings and other components.

Solution: Determine the torque transferred by the engine/transmission combination. Make sure to double-check the series of drive shafts if it is not too small for the application.

●      Too much angle

Every universal joint structure has an angle that must achieve. Such optimal angle reduces as the speed and loads on the universal joint rise. Too much angle will emerge as lack of motion or notches in the universal joint.

Solution: Reducing the angle is sometimes not the best choice, but having a pair of universal joints to reduce the performance of the couplings’ angle in each joint is ideal. Also, a decrease in RPM or torque provides a greater space for the angle to operate.

●      Tear and wear

Universal joints are not usually permanent since they deteriorate as time passes. Tear and wear usually occur mostly when the vehicle applies tension  frequently. For instance, off-roading or towing. When U-joints undergo through excessive stress over time, the steel portions become thinner.

Solution: Install brand-new bearings and other parts of the universal joint. Lubricating the joints may decrease wearing of the components, while safety boots can keep contamination from reaching and corrode the joints.

●      Lack or excessive lubrication

Surrounding the U-joint, if you notice a grease or oil foul, you can easily assume that the U-joint has been damaged or has deteriorated over time. Lack of grease or lubricant in the universal joint causes metal to metal friction in the bearings, and severely wearing out of the interior surfaces.

Solution: For U-joints to work effectively, you should put lubricant within the bearing cups or socket, and seal them tightly. Automobile owners must maintain their universal joint, which includes using the correct type of grease.

●      Heavy use of universal joint

Heavy duty tasks are one of the most prominent causes of universal joints’ failure. Machines and other components have limits, like all humans do. If individuals urge their car to engage in demanding jobs such as rough-terrain or automobile racing, this will tend to damage the engine and vehicle quickly.

Solution: When you perform heavy duty tasks on a regular basis, you may want to utilize a heavy duty type of universal joints developed for more difficult tasks.

FAQs

What could be the reason for a broken cross on a universal joint?

The usual cause of a broken cross on a universal joint is when operating angles are too large.

Is it okay to drive while having a bad universal joint in your vehicle’s drive shaft?

It is not advisable to drive while having a damaged universal joint on your vehicle’s drive shaft. This can lead to a complete breakdown of the driveshaft and other components. Thus, it is essential to address the universal joint issue as soon as possible and avoid driving your car unless it is fully repaired.

How often should you put grease on your drive shaft’s universal joint?

Universal joints should be lubricated per 12k miles. Nonetheless, this can vary based on driving conditions and on your vehicle’s specifications.

Conclusion

U-joints failure may cause serious consequences for engines’ efficiency and safety. To prevent this from happening, you must repair any universal joint issues immediately to minimize severe corrosion or wear to your engine’s drive shaft.