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Our car maintenance tips and tricks
Mar 27

Symptoms that your CV Axles are failing!

Alloy wheels are the best option for any car owner looking for increased durability, less overall weight, and almost endless personalization options. Higher-end alloy wheels require more care and attention to keep their beautiful features in good condition.

What is a CV Axle?

In order to get the power from the engine to the wheels through a CV Axle, a gearbox is necessary. A flexible axle is necessary to power the wheels since they spin and turn at various angles and move up and down with the suspension.

Axles for transmitting rotational motion at different angles are provided for the driving shaft by means of mechanical components called CV Axles. No matter the angle at which the wheel is positioned, the main job of CV Axles is to maintain constant velocity. This makes driving possible, even when turning a bend. The CV Axle is linked to the gearbox differential on one end and to the wheel on the other. How many CV Axles are there in a car? You might be thinking. Two CV Axles, one for each of the front wheels, are standard for front-wheel drive vehicles. Because to the necessity for the engine to send power to the rear axle as well, four-wheel drive vehicles may feature more than two CV Axles.

How do CV Axles function?

Two joints are joined by an axle to form a CV Axle. A joint is either inboard or outboard depending on whether it is adjacent to the differential or the wheel hub. The outboard cv joint links the axle to the wheel hub, whereas the inboard cv joint connects the gearbox differential to the axle.

A fixed ball joint, or outboard joint, has bearings between the inner and outer housing. The bearings are given the ability to slide and spin, allowing them a variety of movements while keeping their speed constant. Its adaptability enables the rotating wheel to function without any issues both while turning and when travelling straight ahead. To reduce friction between bearings, a flexible rubber boot is inserted around the housing and filled with lubricating grease. The boot also shields the outboard joint from harm and keeps dirt and debris out.

As inner cv joints are not linked to the wheel, they may correct for suspension travel without worrying about steering angles. Since they move mostly in the horizontal plane, inner cv joints, which are located on the transmission side, are known as sliding joints. All vehicles with front-wheel drive utilise CV Axles, while vehicles with rear-wheel drive may also use them to connect the transmission to the back wheels.

Why do CV Axles deteriorate?

Rubber boot degradation is typically the cause of defects or damage in CV Axles. There are a number of signs that your CV Axle has failed once this occurs. The lubricating grease that enables the cv joints to spin with the least amount of friction is kept in the rubber boot. If the rubber boot is destroyed, the lubricating medium is lost, and the inner and outer cv joints wear out. Moreover, moisture, dirt, and debris can enter the bearings and cause them to rust or corrode.

You should be aware of the following signs if your CV Axle is damaged:

  • Driving with a lot of vibrations

When the CV Axle is destroyed, you will experience severe vibrations when driving. The bearings are no longer rolling uniformly, causing vibrations in the driving shaft. This vibration may infiltrate the steering and car chassis, resulting in a deep rumble and a rough ride. The vibrations will become more intense at greater speeds or while turning curves. Driving is now dangerous since it might result in loss of control or CV Axle failure. The CV Axle should be changed as soon as you notice any vibrations while driving.

  • Bumpy ride

A CV Axle is designed to function smoothly while the wheels rotate during suspension movements. Uneven riding may stem from a poor CV Axle’s inability to handle suspension modulations. A CV Axle with worn bearings may rotate unevenly, making the ride rough. Even with shifting steering angles and movement in the suspension, a CV Axle should function without any problems. When accelerating, the car may potentially experience torque steer.

When you press the accelerator, the automobile begins to slide to one side. Get the CV Axle evaluated as soon as you suspect damage since a faulty CV Axle might also strain the transmission and differential.

  • Rattling or knocking sounds

As you try to alter the steering angle while accelerating or go around a bend, you may hear a clicking or knocking noise, which is a frequent sign of a damaged CV Axle. The outer cv joint on the wheel side that is beginning to wear down is the most likely reason. If you experience unpleasant noises when driving, particularly while turning, examine your CV Axle as soon as you can since the inner cv joint can also be damaged.

Even while moving straight ahead, rattling sounds will be heard from a worn-out CV Axle. The cause is typically excessive usage wear or a rubber boot that has been damaged and lost its lubricating oil. When you hear clicking, don’t keep driving since the CV Axle might completely fail.

  • Worn-out rubber boot

To lessen friction in moving parts, each CV Axle has a soft rubber boot that is filled with lubricating grease. Grease will seep from the rubber housing and wind up on the wheels and tyres if the rubber boot tears. Look for grease leaks on the inside side of the tyre, and check the rubber boot for signs of damage. It should be sufficient to replace the rubber boot, but if the mechanical elements of the CV Axle have been harmed, you will need to replace the CV Axle.

The aforementioned symptoms are warning signs that a CV Axle replacement is necessary. As long as a faulty CV Axle doesn’t significantly impair steering and suspension, you can still drive. While it is usually safer to repair your CV Axles as soon as you notice a problem. Regularly checking the rubber boot for deterioration is a healthy habit. If you think the boot has a tear in it, replace it and apply new oil. You’ll ride more comfortably and your CV Axles will last longer.

How do you change a CV Axle?

A faulty CV Axle may be replaced at home in the comfort of your own garage using basic equipment available at most auto accessories stores. In terms of how much do CV Axles cost, changing CV Axles can be done at home for a few dollars, but you will wind up spending considerably more if you take it to a certified smart mechanic.

If you are familiar with basic equipment and techniques for working on your automobile, replacing a damaged CV Axle will take you a couple of hours. Because this is a drivetrain component, utilise safety gloves, goggles, and protective clothes.

The majority of the supplies you will require are listed below:

  • Jack stands for cars.
  • Toolbox with screwdrivers, pliers, and spanners
  • Grease for lubrication 
  • Hammer
  • A new CV Axle with circlips, cotter pins, and a rubber boot

Conclusion

The vital task of transmitting motor power to the wheel is performed by CV Axles (via the transmission and differential). Your driving experience will be ruined by a dysfunctional CV Axle, which might even result in you losing control or becoming trapped on a motorway.

CV Axles are a sophisticated piece of machinery that have undergone years of modification to deliver smooth and steady driving thanks to modern suspension and gearbox. The wheel must revolve at an angle around curves and move up and down with the suspension as the CV Axles must do their function.

You should get your car examined and fixed by one of our Car Mechanic Experts In Hertfordshire if it displays any of these faults. They will examine your vehicle and provide you a detailed diagnosis of the transmission system problem, along with the cost of repairing it at the nearby Smart Mechanic In Bishop Stortford.

The first step in maintaining your alloy wheels is to be aware of their specifications. This suggests that in the event of a problem, you will be able to easily find the right spare parts, tools, or equipment for that specific alloy wheel.

How to Determine an Alloy Wheel’s Size

There are a few key steps that must be done when sizing alloy wheels. Your alloy wheels can be professionally or personally sized while being installed, maintained, or modified.

Wheel diameter

The wheel diameter, also known as the pitch circle diameter, is the size of the circle into which your alloy wheel bolts are placed (PCD). By dividing the quantity of bolts by the diameter of the circle in which the bolts are located, which is often expressed in millimetres, you may get the PCD of your alloy wheels.

Width of a wheel

Your alloy wheel’s rim width, which is typically measured in inches, is the space between the outer and inner lips. This number is significant since each car has a certain wheel rim width to suit it properly.

Wheel offset

Wheel offset describes how alloy wheels fit into wheel wells and how far the wheel will be from both the hub-mounting surface and the centerline of the wheel. The closer the wheel is to the car’s body, the higher the number.

Wheel centre bore

The wheel centre bore, whose size is indicated in millimetres, is the hole on the back of the wheel that centres it on the mounting hub. Knowing this dimension is essential since, if the product doesn’t fit as it is, you might need one that can be modified to fit your automobile.

What can Alloy Wheel Refurbishment do to help me?

Contact Smart Refurbs Alloy Wheel Refurbs in Bishops Stortford, Essex, or Stansted right now to find out more about how we can help you maintain, improve, and restore your alloy wheels’ overall quality and beauty. Regardless of the issue, our team of professionals will work tirelessly to assist you and keep your alloy wheels in excellent condition.

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