I believe that in daily car use, everyone must have encountered the phenomenon of heavy steering. Then, what is the reason for the heavy steering and how to solve it? Let's look down!

Automobile steering system 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 for the time being.

Causes and solutions of heavy electronic power steering

First, the tire pressure is low.

This fault reason is also applicable to hydraulic power steering system. The contact area between the tire with lower air pressure and the ground increases, and the resistance when hitting the direction will also increase, so it will feel heavy when hitting the direction. When solving the problem, you can check the tire pressure, which is generally between 2.2 bar and 2.5 bar. If it is missing, you can directly supplement it to a suitable range to eliminate it.

Second, the torque sensor is damaged.

As a result, the sensor is generally caused by the damage of the internal coil, and the fault can be solved by direct replacement; For the torque sensor integrated in the steering gear, it is necessary to replace the steering gear assembly to solve it.

Third, the data of the power steering module is lost.

Generally, it is caused by solder joint desoldering or triode ablation inside the module. The solution is to repair or replace it at the relevant repair shop or after-sales service, and finally re-match or program it.

The fourth is the steering machine itself.

This problem is also applicable to hydraulic power steering system. For example, the internal gears, racks and worms of the steering gear are worn, stuck and rusted in water, which will lead to heavy steering. The solution is to disassemble the steering gear and lubricate it, or directly replace it with a brand-new steering gear.

Fifth, the plane bearing on the upper seat of shock absorber is damaged.

This fault is also applicable to hydraulic power steering system. The plane bearing will rotate with the steering of the car. After a long period of use, it will be broken and damaged, which will lead to the phenomenon of heavy direction. Generally, it can be solved after replacement.

Sixth, the ten bytes under the steering gear string are excessively worn and stuck.

This fault is also applicable to hydraulic power steering system. Because of the long-term lack of lubrication, the small bearing inside the ten bytes will appear the phenomenon of rust and hairpin, and it will feel heavy when hitting the direction. The solution is to replace it with a new ten bytes.

Causes and solutions of heavy hydraulic power steering

One is the lack of booster oil.

Its absence will make the oil flow in the pipeline smaller, and the power will be lost, which will lead to heavy direction. When solving the problem, you can open the machine cover to check whether the oil is enough, or if there is leakage, if there is a lack of replenishment; If there is leakage, it needs to be repaired.

Second, the internal wear and pressure relief of booster pump.

As a result, the damaged booster pump can't provide assistance for oil pressurization, and the directional assistance will naturally become heavy. The solution is to replace it with a new booster pump.

Third, the driving belt of the booster pump is broken.

After the belt is broken, the booster pump loses its power source, so it can't work normally. When dealing with it, you can open the cover to see if there is a broken belt. If there is, you need to replace it with a new belt.

Fourth, tubing deformation and dirty oil.

As a result, after the tubing is deformed, the flow of hydraulic oil in the tubing will become smaller or even blocked, which will lead to heavy direction. The solution is to replace the new booster tubing; If the directional power-assisted oil is dirty, the hydraulic power-assisted performance of the oil itself will be reduced, which will lead to the situation of heavy direction. The solution is to replace the new oil and eliminate the fault.

The above are ten common reasons for the heavy direction of the car, including six kinds of electronic power-assisted system and four kinds of hydraulic power-assisted. Although they are explained separately, their fault causes also have something in common, hoping to help riders!