Mercedes-Benz C240 Power Steering Pumps and Parts
The power steering pump on your Mercedes-Benz C240 is designed to steer with minimal effort. Occasionally, they may require replacement or repair. Understanding how the Mercedes-Benz C240 power steering pumps and parts operate will help you if you have to address the problem in your own sedan.
How do Mercedes-Benz power pumps work?Mercedes-Benz C-Class cars use a rotary-vane pump, which is the heart of the Mercedes-Benz power control system. It creates the force needed to turn the wheel when you drive your car. The pump applies pressure to the hydraulic fluid, matching the vehicles engine speed. Then, it sends the hydraulic fluid to the gearbox or rack and pinion to rotate the components. The components of this system include:
- Pulley: This part is hooked to a serpentine belt and driven by the engine’s crankshaft.
- Shaft: The Mercedes-Benz C-Class shaft connects to the rotary valve to assist with its rotation.
- Rotary valve: As the valve spins, vanes spit out low-pressure hydraulic fluid. It pressurizes as it goes through a high-pressure spool valve.
- Spool valve assembly: The spool valve or relief valve detects the force and sends it through the hose to turn the cars torsion bar.
- Torsion bar: The vehicles torsion bar is a metal rod that turns when torque is applied. It is attached to the Mercedes-Benz driving column and turns as you command.
Generally, the telltale signs of issues with the system are immediate. If you have trouble during turns or the helm feels loose, it needs attention. Other signs include pulling to the side and grinding noises. Also, the components may need repair if the exhibit any of the following signs, including:
- Vibrations in the Mercedes-Benz vehicle may be caused by a loose or broken pulley, which will cause the rotor not to spin.
- Broken vanes and other components will fail to produce enough pressure to rotate the Mercedes-Benzs controls.
- Cracks, fluid leaks, and low fluid levels may cause the Mercedes-Benz C-Class system to make a squealing noise.
You should make routine checks to ensure your cars system functions properly as loose belts will prevent the rotor from turning. On the other hand, a belt that is on too tight will cause the pulley to wear quickly. Consult the Mercedes-Benz owner’s manual for the year and model of your car to determine the type of fluid required. A few simple checks you can make include:
- Check the fluid level in the car. Flush and replace the fluid if necessary.
- Inspect the hoses in the auto for leaks and damage and change as needed.
- Examine the belt’s tension level and make adjustments if required.