Replacement fo a CV Axle and what is all involved. I give you tips and tricks on how to remove and replace a bad cv axle boot as well as one that is hyperextended.
CV joints
While the wheel has remained more or less round since its inception, the axle has evolved to spin in all manner of configurations and situations. Insofar as automobiles are concerned, there are more than a few different types of axles. Some are of the short and stubby variety like the spindles upon which nondriven wheels spin. Things get more complicated, however, when the axles have to deliver power to the wheels. If a powered wheel had nothing to do but roll on a perfectly smooth surface, the solution would be simple. A straight axle with no suspension would do the job. As anybody who has recently driven around can attest, roads are everything but perfectly smooth; thus, the axle must be able to deliver power to the wheels and travel with the suspension as it soaks up the bumps.
Assessing axle wear
A CV joint is a collection of bearings and cages that allows for axle rotation and power delivery on a number of different angles and planes and enables the axle to change length as it travels up and down. All the parts spin around in a protective layer of grease that is held inside the joint by a flexible, rubber boot. Without the boot, the grease would simply spin out of the CV joints. The boot also keeps dirt and grime out. On the CV axle are two CV joints along with one or two sets of splines. One side of the axle gets power from the engine while the other delivers the power to the driven wheel. Presto.
Over time the rubber boots of the CV joints can become cracked, torn or otherwise compromised. Once moisture and dirt get into a CV joint axle and grease makes its way out, the CV joint’s days are numbered. Signs of impending failures are a click-click-clicking or metallic crackling noise while turning and accelerating or a clunking upon deceleration. While one can repack, reboot and rebuild CV axles, it makes more sense for the average do-it-yourselfer to procure replacement units and swap out the old axles. If a boot is torn or missing, it is possible to save the joint if caught early enough, but usually the damage has already been done. Replacing or servicing the entire CV joint axle assembly may be the smarter move since replacing a boot may involve removing an axle, which may also involve removing half or all of the vehicle’s brakes and suspension.
Replacing CV joint axles
While the basic concept of a CV joint axle is the same from vehicle to vehicle, there are a number of different peculiarities that make access to a service manual an important first step before disassembly. Axle pullers and impact wrenches may be required. Pry bars, c-clips and snap rings inside differentials may also be part of the bargain. This knowledge is best gained before getting started, not while 90-weight gear oil is dripping down your sleeve.
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Bundys Garage
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Due to factors beyond the control of BundysGarage, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. BundysGarage assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. BundysGarage recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of BundysGarage, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the end user and not BundysGarage nor any of it’s subsidiaries.
