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The gears and racks in the rack and pinion system are metal parts, which will inevitably wear out during long-term use. When the wear of the gears and racks reaches a certain extent, the fit between the rack and the gear may loosen, causing the hydraulic oil to leak from the joint.

When the driver turns the steering wheel, the rotational motion of the steering wheel is transmitted to the pinion through the steering shaft. The rotation of the pinion drives the rack to move linearly, which pushes the wheel to turn left or right. This process accurately transmits the driver's steering input to the wheel to achieve vehicle steering control.

The reasons for stiff power steering are: 1. Insufficient or leaking hydraulic steering oil 2. Power steering pump failure 3. Steering rack wear or damage 4. Hydraulic oil quality problems 5. Belt problems 6. Air entering the hydraulic system 7. Tire problems

If your vehicle is equipped with a hydraulic power steering system, the condition of the hydraulic oil is crucial. Over time, the hydraulic oil may become dirty, lose viscosity, or even bubble, resulting in a decrease in the efficiency of the steering system. Therefore, regularly checking the quality of the hydraulic oil is the key to maintaining soft steering.

The structure of the recirculating ball steering system is relatively complex, involving screws, nuts, recirculating steel balls and multiple connecting rod components. This complexity makes the system more time-consuming and costly to manufacture and repair. In contrast, the rack and pinion steering system has a simple structure, consisting only of a rack and a pinion, which makes it cheaper to manufacture and relatively easy to maintain.

Natural wear and aging are one of the most common reasons for replacing a power steering rack and pinion set. The rack and pinion will constantly rub against each other during long-term use, and although they are usually made of high-strength materials, they will inevitably wear out.

The most common way to drive the power steering pump is through the engine's belt system. Traditional hydraulic power steering pumps are usually driven by the engine's belt. The engine belt is connected to the crankshaft of the engine. As the engine runs, the belt drives the shaft of the power steering pump to rotate, so that the pump works.

The reasons for the failure of electric power steering are: 1. Electrical system failure 2. Steering sensor failure 3. Control module (ECU) failure 4. Electric power motor failure 5. Power system problem 6. Mechanical problem 7. Temperature change 8. Moisture intrusion

The manual steering system relies entirely on mechanical transmission, and there is no power steering device in the system. The steering force is directly applied by the driver and transmitted to the wheels, so there is no need for a power steering pump.