BMW X1, leave factory 14 years it up to now already travel the course of development of 75 thousand kilometre, belonging to BMW car is li of the most compact SUV, more compact model also is one of important signs of X1.
This car appeared problem of engine forehead soniferous, a few different sound always are given out after starting (thorn thorn) , do not know which component appeared problem!
Which component problem is car engine occurrence abnormal knocking is judged? The cook that has experience for the most part relies on force of eyesight, ear and experience to undertake judging also can checking an about right, the contact that needs very long time and experience precipitate, but also cannot achieve the successful rate of 100% .
Then we brought to play newly today meaning - stethoscopic, what tag in the graph is stethoscopic, does the examine that looks like the doctor inside unlike clinic, hospital to be used to inspect a patient's condition listen implement? The principle is actually similar, exclusive differentia is frequency paragraph can have very big different, and the healthy service of a humanness, another vehicle that is a person - car breakdown diagnoses a service.
Diagnose through stethoscopic use, the part that we found a problem to be in - air conditioning compressor.
The driven pulley of front of air conditioning compressor (also call pump of air conditioning pump the head) noise is given out in running rotational course, diagnostic eventuate this component attaint.
Actually a lot of people are not very deep to the understanding of the car, also not be the industry that oneself are familiar with after all, that also with respect to prep let alone other, major car maintains the solution that maintains inn to encounter such problem to be taken out to you can be only a kind - change assembly of air conditioning compressor.
Still have another kind of method to solve actually - the driven pulley that is air conditioning compressor without giving thought to, still be a dynamo is one-way the problem of round of attaint can undertake maintaining.
Next the driven pulley of air conditioning compressor is detachable changing new annulus, the dynamo is one-way annulus same also.
We get off the damping sheeting of front of driven pulley of air conditioning compressor first, damping sheeting - air conditioning compressor is in when running, driven pulley can keep turning, can produce a few quiver, the use of damping sheeting is for pare this kind of quiver.
Damping sheeting and driven pulley are to rely on connective of 3 fixed screw, should join 3 screw gets off to be able to take sheeting only so.
After damping sheeting gets off, next operate even if pick driven pulley, and of driven pulley pick a bit arduous,
There is a small office among driven pulley, ten million cannot forget- - the card reed of one steeliness is fixed, get off card reed first, pick in what undertake driven pulley.
The driven pulley after card reed gets off is picked, car head place is operated, be in the position because of the air conditioning compressor of X1 inferior, still be in than buy of crankshaft position of wheel under, it is more difficult that so the operation rises, and the settlement with the very good use that draws a horse this issue that handles difficulty, draw a horse - believe need not I undertake introductoried.
Pick the driven pulley below, the bearing among wears away the trace is apparent, believed to had run the irregular roll of a period of time, just can arise such irregular wear away trace, if continue,use bring about bearing easily to wear away badly to produce those who embrace dead condition likely even.
Had picked driven pulley the sky after to move compressor assembly, should do before installation is will clear clean, daub grease.
Improve model driven pulley of air conditioning compressor (the pump head that also calls air conditioning pump) have with old money very big different, hear greatly promoted use limiting value.
Good, other did not say more, direct installation.
The installation of driven pulley need not be used draw a horse, also do not use, be bungled go in installation reachs the designated position can, after driven pulley installation reachs the designated position, the key came, the installation that blocks reed cannot be lost, must not forget.
Driven pulley and damping sheeting are, changed the damping sheeting with new so new driven pulley of course also cannot little, new damping sheeting and 3 screw.
The installation of damping sheeting is relatively simple, seek good seat screw of 3 close solid.
This one measure comes down time of a many hour is OK if skilled technician is operated finished, relatively at changing new the cost of 4-5000 of assembly of compressor of an air conditioning will tell, the cost of this maintenance matchs hundreds of times be economical.
A lot of very good maintenance technologies that the fast rhythm of current society makes cannot find very good promotion application, change had made the main trend, make I can't help thinking of is craftsman spirit here already not important?
The technician of dedicated Yu Weixiu, they are the following live the environment will be smaller and smaller, this problem had perplexed me very long very long, cannot find the solution all the time, everybody mights as well heavy next hearts will want, what reason is caused? How does this problem defeat solution again?
Car of BY love card blocks friend - the flower is peppery
