ALAN W. WINTERMUTE
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Overlooked safety item

1/5/2022

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                The least expensive part to replace is often overlooked, yet that part can affect safety of a vehicle in many ways.  I am talking about shock absorbers.  The main job of a shock absorber is to keep tires in contact with the road.  People associate shock absorbers with a smooth ride.  Hollywood shows cars bouncing along with worn shocks, and the scene is amusing.  Fleet managers won’t think about shock absorbers on trailers because nobody rides back there so “who cares”?  In a sudden stop at highway speeds if the trailer wheels start to hop is a jack-knife truck/trailer combination about to occur? Could worn shock absorbers be the root cause? 
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                An inspection of tire tread for scalping around the circumference is a good indication of worn shock absorbers. A good mechanic will be able to diagnose this. The attaching points of shocks are insulated with neoprene that over time wear and can be found by grabbing the shock and shaking.  Any movement at either end of the shock absorber indicates a loose mount, and time to replace the shock absorber.  Fluid will leak out of a shock absorber and render it useless.  What is most interesting is that many jurisdictions will accept a shock absorber for safety inspections if it is not broken or unattached.  No further inspection is required by law during safety inspections.  A worn shock absorber can affect steering and braking, but it will still meet minimum safety regulations if it is attached and in one piece.  A worn shock absorber will cause uneven tire wear and reduce tire life.  Replacing a pair of shock absorbers will cost less than half the price of one tire.  A pair of new shock absorbers will improve tire life and reduce wear on other suspension components. Still, these are often the most overlooked safety item on vehicles today.
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