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What is a Rear Axle Assembly?
These days, most cars are front-wheel drive, so they don’t have a rear axle that you need to worry about needing to replace. But, if you’re one of those lucky individuals who has a rear-wheel drive car, well, then you also have a rear axle assembly.You see, the axle assembly contains the bits and pieces needed to transfer rotational force to the drive wheels. Inside the rear unit, you’ll find the differential, the rear axle shafts, and a collection of axle bearings. A driveshaft, which runs the length of the vehicle, delivers torque from the engine to the axle system.Without a doubt, the differential transmission is the focal point of the axle. The differential contains a collection of gears and bearings that direct force to the axle, which, in turn, rotate your car’s wheels and tires. Unlike rear driving cars, the differential usually is a component of the transmission in front wheel drives.Also, when your car goes around a corner, the differential allows one rear wheel to turn faster than the other rear wheel. That stops the car from skidding and sliding – plus, it prevents you from looking like you got your driver’s license from a Crackerjack box.The axle is filled with gear oil to keep all of the internal components happy. Axle auto seals at both ends of the unit keep the fluid in and debris out. A differential cover gasket may also be used to protect the axel and its system.
Symptoms of a failing Rear Axle Assembly
Noises are the most common sign that the rear axle is headed south. The gears and bearings in the axle system can create a symphony of whining and growling noises. Excessive clearance between the gears can also cause a clunking noise that, in many cases, is most apparent when the vehicle is put into gear. Weir axel noises are a great sign that you might need to repair or replace your axle.
Is there a pool of fluid underneath the rear of your vehicle? Well, my friend, you may have a leaking axle seal or gasket. Rear fluid leaks are a great sign that you might need to repair or replace your axle
Shuddering or vibrating car
A failing differential may also cause a shuddering or vibration felt throughout the vehicle and that’s about as fun as it sounds. Failing differentials are definitely a part of your car that you need to replace. If you hear weird auto noise, it might be time for a replacement or repair.
Car doesn’t move
If the axle assembly has experienced catastrophic internal failure, power won’t be transferred to the drive wheels and the axle wont spin the front or rear wheels. Guess what happens then? That’s right: nothing. Your vehicle won’t move. If your car won't move it's probably a sign that you might need to replace your axle.
How urgent is a Rear Axle Assembly Replacement?
If your axle grenades, your vehicle will be un drivable. So, yeah, you could say that an axle replacement or repair is pretty important. If you’re experiencing weird noises, shuddering or fluid leaks from your axle system, be sure to replace the axle issue before it’s too late.