I believe that in the daily car, everyone must have encountered the phenomenon of heavy steering, so what is the reason for the direction of playing heavier, and how to solve it? Let's move on!
Automotive steering systems can be roughly divided into two categories, one is electronic power steering system, and the other is hydraulic power steering system. Of course, there is also an electro-hydraulic power steering system, but it is not in the scope of discussion, so leave it alone.
Causes and solutions to the heavy electronic power steering
First, the tire tire pressure is low, and this fault cause also applies to hydraulic power steering systems. Tires with lower air pressure have an increased contact area with the ground, and the resistance when hitting the direction will become larger, so it will feel heavy when hitting the direction. When solving, you can check the four-tire pressure, generally between 2.2 bar and 2.5 bar, if missing, you can directly make up to the appropriate range to exclude.
The second is caused by the damage of the torque sensor, which is generally caused by the damage of the internal coil, and the fault can be solved by direct replacement; for the torque sensor integrated inside the steering machine, the steering machine assembly needs to be replaced to solve the problem.
Third, the data loss of the steering power module is generally caused by the desoldering of the internal solder joint of the module or the ablation of the triode, and the solution is to repair or replace it at the relevant maintenance plant or after-sales service, and finally re-match or program it.
The fourth is the problem of the steering machine itself, and the cause of this failure also applies to the hydraulic power steering system. Such as the internal gear, rack, worm wear, stuck, water rust will lead to heavy direction, the solution is to disassemble the steering machine and lubrication repair, you can also directly replace the new steering machine.
Fifth, the flat bearing on the shock absorber is damaged, and the cause of this failure is also applicable to the hydraulic power steering system. The flat bearing will rotate with the steering of the car, and after a long period of use, it will be broken and damaged, which will cause the phenomenon of heavy direction, which can be solved after general replacement.
Sixth, the ten bytes under the direction machine tube column are caused by excessive wear and stagnant, and the cause of this failure is also applicable to the hydraulic power steering system. The small bearing inside the ten bytes will appear rusty and hairpin due to the lack of lubrication for a long time, and it will feel heavy when playing the direction, and the solution is to replace the new ten bytes.
Hydraulic power steering is heavy causes and solutions
First, the lack of power oil, its lack will make the oil flow in the pipeline smaller, and the power will be lost, which in turn will lead to heavy direction. When solving, you can open the lid to check whether the oil is sufficient, or if there is leakage, if there is a lack of filling, if there is leakage, it needs to be repaired.
Second, the internal wear and pressure relief of the booster pump is caused, because the damaged booster pump cannot provide assistance for the oil pressure, and the directional boost will naturally become heavy, and the solution is to replace the new booster pump.
Third, the drive belt of the booster pump is broken, after the belt is broken, the booster pump loses the power source, and it cannot work normally, and the cover can be opened to see if there is a belt break, if there is a need to replace the new belt to solve.
Fourth, the tubing deformation and oil contamination caused, after the deformation of the tubing will make the hydraulic oil flow in the tube become smaller, or even blocked, resulting in a heavy direction, the solution is to replace the new auxiliary tubing; if the direction of the oil is dirty, it will make the hydraulic assistance performance of the oil itself decrease, resulting in a situation of heavy direction, the solution is to replace the new oil, you can eliminate the fault.
The above are ten common reasons for the heavy direction of the car, including six kinds of electronic power assist system and four kinds of hydraulic assist, although they are explained separately, but their fault causes are also common, I hope to help the riders!