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The launch of the power steering system is an important part of its innovation history. General Motors officially launched the power steering system in 1951, and it was first used in some models of the Cadillac brand.

The power steering rack is usually equipped with seals at both ends to prevent fluid leakage. However, as the vehicle is used for a longer time, the seals will lose their sealing ability due to wear, thermal expansion and contraction, or material aging. Once the seals are damaged, the fluid will leak out from both sides of the steering rack.

Positive locking means that in a rack and pinion steering system, a specially designed locking device is used to automatically lock or limit the steering angle under certain conditions to prevent the vehicle from oversteering or steering out of control.

Although rack and pinion steering systems are still widely used in passenger cars and small commercial vehicles, other types of steering systems, such as recirculating ball steering systems and Electric Power Steering (EPS) systems, have gradually taken over the market in some high-end models, heavy vehicles and off-road vehicles.

If you often drive on the highway and need stable directional control and less fuel consumption, the electric power steering rack is still the first choice. It can provide consistent power assistance to ensure stability when driving at high speeds.

In response to the question of "Can you replace only the rack without replacing the pinion?", the answer is usually no. This is not only because the two are closely connected in mechanical structure, but more importantly, replacing the rack or pinion alone may cause a series of problems, affecting the overall performance and safety of the steering system.

In general, it is recommended that car owners replace the steering fluid every 2-3 years or every 50,000 kilometers. Of course, the specific replacement cycle should also refer to the recommendations of the vehicle manufacturer.

Leaks in hydraulic systems are usually caused by aging, wear or improper installation of mechanical parts. Power steering rack leakage is mainly concentrated in key components such as hoses, seals, joints and hydraulic pumps.

If your vehicle is equipped with a hydraulic power steering system, first check the level of the steering hydraulic fluid. If the level is too low, there may be an oil leak, which is usually one of the signs of a damaged steering rack gear.

Whether a car is equipped with power steering depends on many factors, including the type of car, the nature of the competition, and the needs and preferences of the drivers. Although power steering can reduce driver fatigue and improve handling stability, it can also increase the weight and complexity of the vehicle and reduce steering feedback.