Introductive
Car batholith abnormal knocking, always invite a problem with numerous car afraid friend, affect driving comfortable sex directly on one hand, on one hand the safe hidden trouble with unpredictable under cover.
My experience in the past is informed, the first reaction after friend of great majority car encounters chassis abnormal knocking is maintained namely change will solve a problem, among them the 3 car friend that become above know to have spare parts damage only, but know because ageing still drives to be used to and be brought about,chassis is after all far from. Maintain project as, the maintenance case that I am taking abnormal knocking of a batholith today and everybody talk about those things that drop about chassis abnormal knocking and comfortable sex.
Have a word so say: Do know a principle to build a car again. Before interrogate is inscribed and building a car, what we understand simply first is chassis suspension system, know its to also want to know its like that all like that
Chassis suspension system
Everything between the frame that chassis suspension system is a car and car bridge or wheel passes the floorboard of force link unit, the main effect of suspension is to transfer function the one shearing force between wheel and automobile body and moment of force, prop up force of force, apply the brake and driving force to wait for instance, those who reduce goods and car itself is the comfortable sex of the vibration that and alleviation is passed to the concussion of automobile body by rough road surface load, attenuation causes from this, member that assure to multiply, dynamic carry on one's shoulder.
One of the commonnest suspension systems
Want to say the commonnest suspension, be worthy of of suspension of independence of type of Na Maifu abdicate; It is multi-purpose at front-wheel drive it is car in, its structure is simple, decorate compact, have good stability under transport condition, 200 thousand the following model utilization rate is in the majority.
Advantage: Cost is low, the structure is simple, take up the space is little, and have good response gender and hold charge a sex.
Defect: Fight list and apply the brake to nod ability is weak, stability is poor, after increasing balancing pole, alleviate somewhat but cannot from go up at all solve a problem, lining is easy wear away durable sex is not tall, easy leakage oil needs shock absorber to change regularly. (it is to let a person love to be hated again again really ah... )
Sheet nots from the wheat of afore-mentioned understanding suspension of abdicate type independence and whole profile will analyse, most the abnormal knocking that lets the batholith that numerous car friend headaches and comfortable sex drop two big questions, also can make more numerous solution and platoon check a Che Youli.
The origin of chassis abnormal knocking
The the commonnest, most general chassis abnormal knocking, come from the joint that supports a part at having alleviation effect, this is rubber products, common says " lining " .
The tremendous wallop that encounters when the wheel is more than lining can when susceptive force, can bring about balata lining to appear unusual the phenomenon that perhaps damages, the initial stage that lining damages won't be driven to be aware of, also mean when lining damages badly had lost amortize action, because do not have the part part that the join below the action of amortize supports, can produce abnormal knocking as the jolt of tire, can feel directional sideslip apparently when brake apply the brake even (brief out of control) , common fragile the spare parts is lap arm lining.
Same abnormal knocking also can be caused below the circumstance of balata lining occurrence ageing besides. And ball head clearance passes to also can produce abnormal knocking greatly, lubricate to be used normally because the grease of ball head is dustproof covered burst or use up what almost all causes to be short of break, happened to work between ball head and ball head base thereby grind, as time passes appeared clearance formed abnormal knocking thereby.
The arm is controlled for what damage already badly inside circle
The origin that comfortable sex drops
A lot of cars advocate maintain the unusual jolt of automobile body drop for comfortable sex, really, what abnormal knocking brings is unwell what should be less than jolt to bring is unwell.
Appear when the car when unusual jolt, ought to be opposite easy the damping system that causes jolt undertakes checking. Damping system basically has damping spring and shock absorber (damp) composition, if shock absorber appeared leakage is oily, the damp that shock absorber place produces will decrease greatly. Fall in damp reductive circumstance cannot the amortize, abidance that prevents bedspring is fluctuant, fluctuant below this circumstance meeting delivers automobile body make its automobile body produces jolt.
The graph is the shock attenuation device of serious ooze oil on
Chassis is unusual case
This is already travel the Ni Sang of near 200 thousand kilometer soundses of nature, accept Buddhist nun? 200 thousand kilometers? Right it is 200 thousand kilometer, net of thing of car principal and subordinate makes an appointment with lathe work to make, should drive everyday it runs a hundreds of kilometers, chan Guang maintains greatly had done 3 times, the whole thing tire also was not changed less.
Car advocate often appear when travel of draw narrate car irregular " choke choke " sound, additionally the car adopts in a way small some are rough entire road surface can bump for ages. Pass a car advocate description, I am already OK and preliminary judgement is chassis suspension the spare parts in the system is unusual the appearance that cause.
Chassis examination
Maintain the car since master top above all, observe the sign that whether balata lining appears to damage apparently with naked eye, using flat prize stick next joint is secured between prize spare parts, whether to put in clearance with this judgement.
Decide the analysis is unusual
Abnormal knocking:
The head of ball of balance pull rod that discovers two side through the examination (prevent tilt join lever) appear bigger gap, when the road surface that passes jolt in travel process, because the reason of clearance brings about a ball,the circumstance of dry attrition appeared between head and ball head base, thereby abnormal knocking arises subsequently.
Disassemble abnormal knocking spare parts:
Disassemble the head of ball of balance pull rod of front-wheel drive is most simple, draw lessons from this cropland CRV of this car disassemble method; Use above all start litre of car since machine top, pull down tire. Head of ball of fixed balance pull rod is found to fluctuate later the fixed screw of two balls head, and use the most convenient method pull down; Next graphs are the head of pull rod ball that has been disassembled to come down immediately, because the fixed screw of upper part is the side outside front, so very good tear open, but the screw below needs enough patience one tooth of one tooth tear open!
To make each Che Youneng sees the reason of attaint clearly, xiaomin spy head of meaning general ball is external dustproof set cut off, cut off dustproof the though ageing uses up almost,uses up lubricant grease after covering is a little disgusting, but the already OK and clear case that sees interior.
Bumpy:
Through the discovery after the examination, rear wheel two damping all appeared the evidence of ooze oil, because ooze oil amount is larger already serious affected damp result, cause thereby cannot the amortize, abidance that prevents bedspring is fluctuant, fluctuant below this circumstance meeting delivers automobile body make its automobile body produces jolt.
Decompose shock absorber:
Tear open from the car come down damping just just is to disassemble the one part that discloses damping, the most important is damping amortize glue and damping depart, after all amortize glue is in good condition nondestructive. And think departure is both pull down with respect to need that fixed screw.
If be below the circumstance that does not have special tool, this screw is not so relaxed can be pulled down. Because screw is secured,this is go up in piston lever, if use traditional tool to tear open this screw piston,lever can follow roll, unless discard,piston lever does not let his turn ability tears open next screw smoothly, some are troublesome.
At this moment special tool is about to come on the stage, can see sleeve among by a punty perforative, the groove that the good of its punty uses top namely and the peg photograph with piston topmost lever are united in wedlock, have the effect of fixed piston lever thereby. Piston lever was secured screw can use the sleeve outside easy to doly to pull down.
Summary: Avoid chassis abnormal knocking and unusual jolt, I have these proposals
Above, it is me combinative example is mixed to chassis abnormal knocking of unusual jolt a few share, I believe most car friend does not have us such professional and start work ability, also have us hard such operation condition.
To most car friend, these symptoms can avoid actually.
Common chassis lining, damping damages, mix for ageing more wear away badly those who cause, but unusual wearing away is accusing in daily drive a vehicle, small Min summary can bring about unusual tatty road surface 3 kinds below, everybody is in when passing such road surface, still want to maintain attention to center, endeavor to avoid.
1. decelerate is taken
The form that decelerate takes barpque, height is unfavorable, and when the car is taken through consecutive slowdown in high speed, can appear severe bumpy case, acuteness jolt can cause loss to tire not only; Still can bring about lining to appear serious tatty circumstance.
Proposal: Put delay speed as far as possible when be taken through decelerate, divide evenly of fast tenderness through.
2. driveway serrate edge and low greenbelt
The height of driveway serrate edge and low greenbelt often exceeded decelerate belt, when the wheel is in driveway serrate edge and low greenbelt top, can cause to lining as a result of high reason transfer the adverse circumstance of drag, stretch not the phenomenon that the lining of beautiful can appear to be torn off right now.
Proposal: Below the circumstance of be forced to do, do not pass this kind of road surface as far as possible. (the SUV with taller batholith also needs to be passed softly)
3. road surface caves, eyewinker
Road surface caves, the eyewinker often concealments quite, look from far and not apparent, it is the car arrives normally cave in front of the driver just discovers a problem, can be slam the brakes on or toughen one's scalp-brace oneself open the past only. Road surface caves bigger, the destruction that causes to car batholith is bigger also.
Proposal: Encounter road condition not when the road surface of beautiful, as far as possible slow through; Nurturance uses car convention goodly, be economical save worry.
Finally, if become you after car occurrence abnormal knocking, proposal everybody return the maintenance with 4S professional perhaps inn to interlink inn for a short while. From security and dependability character, chassis suspension is the part that should notice most and needs an examination most, seasonable maintenance changes to be able to assure driving comfortable sex not only, can eliminate needless safe hidden danger more.
Wish big housekeeping money Che Yu is fast!
