Car rear suspension buffer lower body action
The main role of the rear suspension buffer lower body includes the following aspects :
Improves the driving experience : The rear suspension buffer lower body can significantly improve the ride stability, reduce body vibration, absorb the suspension system noise, thereby improving the comfort of driving .
protective suspension system : it can protect the shock absorber and suspension system, prevent the oil seal of the shock absorber core from leaking oil, and extend the service life of the car .
to prevent suspension "breakdown" : when jumping on the wheel to a certain stroke, the buffer lower body and the main elastic components (such as coil springs) work together to form a strong nonlinear degree of elastic components, limit the suspension travel, avoid excessive compression of the suspension, and protect the vehicle chassis and body structure .
absorb impact load : when driving on uneven road surface, the buffer lower body can absorb the impact load transmitted from the road surface to the body, reduce the sense of turbulence and improve the ride comfort .
Installation and maintenance recommendations :
Choose the right material : It is recommended to choose polyurethane material made of porous buffer blocks, because it is better than rubber material buffer impact load, aging resistance, water absorption better .
Check and replace regularly: over time, the buffer underbody may crack, break or even become powdery. Therefore, it is very important to regularly inspect and replace damaged buffer underbody .
Choose regular brand : When replacing the buffer lower body, you should choose regular brand products and avoid using poor quality products to ensure its function and durability .
The rear suspension buffer lower body failure is mainly manifested in the following situations:
shock absorber oil leakage damage : The shock absorber oil leakage will cause the vehicle to make a "crunchy" sound when bumping, and there will be obvious bounce and abnormal noise when the body is pressed. The solution is to replace the shock absorber .
balance pole rubber sleeve abnormal sound : driving and braking will appear "click" or "crunch" sound, check whether there are worn parts on both sides of the rubber sleeve, if necessary, replace the new rubber sleeve .
Loose connection parts : When turbulence occurs, a clicking sound occurs. Use a crowbar to check and tighten the loose screws .
top rubber or plane bearing abnormal sound : over the speed belt will emit a "knock" sound, in the direction of the place will emit a "squeak" sound, need to replace the top rubber or plane bearing, or add grease in the appropriate location .
suspension bushing aging : low speed bumpy road will make a "crunch" sound, this is the aging of the suspension bushing, rubber cracking caused by metal friction, need to replace the aging of the suspension bushing .
Reasons for failure may include:
shock absorber oil leakage : shock absorber oil leakage is a common cause of failure, usually due to the shock absorber internal seal aging or damage .
aging of rubber : balance rod rubber sleeve, suspension bushing and other rubber parts will age and crack after long-term use, resulting in abnormal noise and loosening .
connection parts wear : ball head, screws and other connection parts wear or loose, resulting in abnormal noise and unstable operation of the vehicle .
Test methods include:
visual inspection : Observe whether there are oil stains on the surface of the shock absorber, whether the rubber sleeve of the balance rod, the suspension bushing and other parts have signs of wear or aging .
manual inspection : use the hand to move the ball head tie rod, steering tie rod and other parts to check whether there is loose or too much clearance .
tool check : Use a crowbar to pry related components to check whether they are loose. Press the body to check the bounce and abnormal sound .
Repair methods include:
replacement parts : replace leaking shock absorbers, aged rubber parts, worn balls, etc .
Fastening screws : tighten the loose screws to ensure that the connecting parts are secured .
Add grease : when necessary, add grease to the top rubber or flat bearing and other parts to reduce abnormal noise .
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