How to Troubleshoot your Volvo S70 Axle Assembly Problems
A mid-size luxury sedan like your Volvo S70 is definitely built with perfection in mind. From its shell down to its smallest components, the S70 may seem too good to be true. But after years of use, just like any other vehicles, the S70 and its parts are at risk of premature wear. Its axle assembly, for one is prone to wear out due to its function. So if you've been noticing a clicking sound whenever you corner, that's already a good indicator that your Volvo's axle assembly is acting up. Here are some more manifestations of a failing axle assembly:
Aside from the audible clicking sound, the presence of a thick, dark black grease on the axle is another obvious indicator that the CV boot is worn-out, and the axle joint is drying out. Once the CV boot is ripped, an axle replacement is your last resort. Beware, however, since this grease does not easily come off once it gets stuck on your hands or your clothes.
Rear axle noise
If you have been noticing a simple clattering sound coming from the back end of your vehicle, you can experiment if the real cause of the problem is the rear axle by isolating the noise. To do this, you should drive your car in an isolated highway, coast the vehicle with your engine off, and then listen to the sound. If, during the coasting test, you hear a constant whine, then a damaged gear teeth or improper adjustment of bearings are causing the problem. To verify, you may also check if there is a sharp metallic click whenever you shift from forward to reverse gear or when you are turning a corner.
Unnecessary shakes, both in the steering wheel and in the rear end of your vehicle, can be caused by several reasons. But a vibrating rear axle indicates that the vehicle may have unbalanced wheels, a bent rim, or a tire out of round. You may take your car to an experienced mechanic to ensure that the problem will be properly diagnosed, and if there is a need to replace damaged components in the axle assembly.