When independently studying technical documentation for foreign cars or when communicating with specialists in specialized services, there is often a need to accurately translate the term steering system into Russian. The literal and technically correct translation sounds like “steering control”, but this unit includes many components, the name of which determines the correct diagnosis. Understanding English terminology is critical for owners of used cars ordering spare parts through online catalogs.
An incorrect interpretation of the part name may lead to the purchase of an unsuitable item, for example, a power pump will be purchased instead of a steering rack. In modern cars, the control system has become a complex electronic-mechanical complex where hydraulics, electrical and mechanics are intertwined. Steering is responsible for changing the direction of movement, and its serviceability directly affects driving safety.
In this article we will analyze not only the translation itself, but also the structure of the unit, common breakdowns and methods for identifying them. You will learn to distinguish between types of systems, understand service manuals and correctly formulate queries when searching for components. This knowledge will save time and money by eliminating errors when servicing the vehicle.
Main steering components
The steering system consists of several key elements, each of which has its own English name. The central node is steering rack (steering rack), which converts the rotational movement of the shaft into the translational movement of the rods. It is this mechanism that most often requires attention when knocking or play appears in the front suspension.
To facilitate wheel rotation, an amplifier is used, which can be hydraulic (power steering) or electric (electric power steering). In hydraulic systems, pressure is created by steering pump (power steering pump), and the distribution of fluid flows is controlled by a spool mechanism inside the rack. In electric analogues, the force is created by an electric motor mounted on the shaft or the rack itself.
The connection between the steering wheel and the mechanism provides steering column (steering column). This unit is often equipped with a universal joint to compensate for angles and an airbag. Rotary rods (tie rods) and the tips transmit force directly to the steering knuckles of the wheels.
- 🚗 Steering wheel — steering wheel, the main control.
- ⚙️ Steering rack — steering rack, main actuator.
- 💧 Power steering fluid — working fluid for power steering.
⚠️ Attention: When replacing components steering system It is extremely important to use only the fluid specified by the manufacturer. Mixing different types of ATF or using automatic transmission oils in EPS (Electric Power Steering) systems is strictly prohibited and will lead to failure of the unit.
Each element requires periodic inspection. Mechanical connections are subject to wear and electrical contacts are subject to oxidation. Understanding the function of each part helps you locate the problem faster.
System Types: EPS vs HPS
The modern automotive industry is dominated by two main types of steering systems: hydraulic (HPS) and electric (EPS). Translation of terminology plays a key role here, since their diagnostic methods are fundamentally different. Hydraulic booster relies on fluid pressure, whereas electric system uses a motor.
Hydraulic systems known as Hydraulic Power Steering, are distinguished by highly informative steering and smooth ride. However, they require constant maintenance: replacing the pump belt, checking high pressure hoses and fluid levels. A characteristic sign of problems in HPS is a hum when turning the steering wheel.
Electrical systems (Electric Power Steering) are becoming standard due to their energy efficiency and ability to integrate with autonomous driving systems. EPS has no fluid to spill or belts to break. However, such systems are sensitive to electric motor overheating and require complex computer diagnostics.
The choice between system types affects the cost of car ownership. Repairing an electric rack often requires specialized equipment to reflash control units, while hydraulics can often be restored by replacing a repair kit.
Diagnosis of steering mechanism faults
Timely identification of problems in steering system allows you to avoid expensive repairs and emergency situations. There are a number of symptoms that indicate worn components. The first sign is often a change in steering effort or the appearance of extraneous sounds.
If the steering wheel has become heavy, you need to check the fluid level in the power steering reservoir, the tension of the pump drive belt, or the operation of the electric motor in EPS systems. A knocking noise when driving over bumps usually indicates wear on the steering wheel ends (tie rod ends) or the inner rack bushing. Vibration in the steering wheel may indicate wheel imbalance or problems with the steering linkage joints.
Fluid leakage is a clear sign of damaged seals or hoses. In hydraulic systems, even a small amount of digging can lead to air in the system and failure of the amplifier. It is important to regularly inspect the area under the car after parking.
☑️ Checking the steering
⚠️ Attention: Operating a vehicle with completely leaked power steering fluid, even for a short time, will lead to scuffing in the shaft-spool pair and failure of the pump. If a leak is detected, you should continue driving only to the nearest service center, constantly adding fluid.
Diagnostics must be comprehensive. A visual inspection is often not enough; it requires checking for play on the lift and computer scanning for errors in the steering control unit.
Terms correspondence table
To simplify the work with spare parts catalogs and manuals, below is a table of basic terms. Accurate translation helps avoid confusion when ordering parts.
| English term | Russian translation | Function |
|---|---|---|
| Steering Rack | Steering rack | Converting Rotation to Thrust |
| Tie Rod End | Steering end | Connection of rod with fist |
| Power Steering Pump | Power steering pump | Creating fluid pressure |
| Steering Column | Steering column | Transmission of rotation from the steering wheel |
| Idler Arm | Pendulum arm | Rail center support (rare) |
Using the correct terms speeds up the search for information. In the catalogs of major manufacturers, such as ZF, TRW or Koyo, this is the nomenclature used.
The process of replacing tie rod ends
Replacing tie rod ends (tie rod ends) is one of the most common maintenance procedures steering system. This is a consumable material, the resource of which depends on the quality of the roads. The process requires certain skills and tools.
First, the car must be raised and the wheel removed. Then the nut securing the tip is unscrewed. Before dismantling, it is important to mark the position of the tip on the thread of the rod in order to approximately maintain wheel alignment after replacement. However, this does not replace full adjustment on the stand.
To press the tip pin out of the steering knuckle, a special puller is often required. Using a hammer may damage the boot or the pin itself. After installing a new part, be sure to tighten the nut to the recommended torque.
Do I need to do a wheel alignment after replacement?
Yes, replacing any element that affects the suspension geometry (steering ends, rods, levers) requires mandatory adjustment of the wheel alignment angles. Ignoring this step will result in uneven tire wear and the vehicle pulling to the side.
Do not forget to lubricate the threaded connections with anti-corrosive agent before assembly to make dismantling easier in the future. This is a simple operation that significantly extends the life of the fastener.
Maintenance and service life extension
Resource steering system directly depends on operating conditions and timely maintenance. The driver can significantly extend the life of the units by following simple rules. The main recommendation is to avoid sudden impacts with the steering wheel on curbs and potholes at high speed.
For hydraulic systems, it is critical to change the fluid according to regulations. Over time, it loses its properties, becomes saturated with moisture and wear products, which leads to corrosion of the internal surfaces of the rack. In systems with electric power steering, it is important to monitor the condition of the electrical connectors and the cleanliness of the engine compartment.
Regular diagnostics of the chassis allows you to identify backlashes at an early stage. A broken wheel bearing or ball joint can transmit vibrations to the steering rack, accelerating wear. Therefore suspension (suspension) and steering (steering) are closely related.
When parking, try not to rest the wheels against the curb under load. This creates excess pressure in the power steering system or a load on the EPS electric motor, which reduces their life.
Following these simple rules will help you avoid costly repairs and ensure comfortable driving for many years.
High-quality steering means not only the absence of play, but also a predictable reaction of the car to the driver’s actions. Any deviations in the operation of the system require immediate diagnosis.
Frequently asked questions (FAQ)
Can I drive if the steering light comes on?
If the malfunction lamp comes on steering system, driving may become difficult or unpredictable. In EPS systems, the steering wheel may “bite” or become very tight. You can only drive to the nearest service station at low speed, using extreme caution. Ignoring the signal is life-threatening.
Why is the power steering pump humming?
A hum usually indicates low fluid levels, air entering the system (cavitation), or worn bearings/vanes on the pump itself. The sound may also come from the drive belt tension roller. It is necessary to check the fluid level and the condition of the belt.
How often should the power steering fluid be changed?
Manufacturers often write that the fluid is filled for the entire service life, but experts recommend changing it every 60-80 thousand kilometers or every 3-4 years. This allows you to remove wear products and moisture, preserving the life of the expensive slats.
What is steering rack play and is it dangerous?
Backlash is free movement of the steering wheel without wheel reaction. A small backlash is acceptable, but if it increases, this indicates wear of the gear pair or bushings. Large backlash makes control unclear and requires repair or replacement of the rack.