How to extend the life of the power steering. The hydraulic power steering for a long time

Long and reliable operation power steering is only possible with its proper operation, regular maintenance and control of technical condition.

2015-11-13 23:57:58 363

steersteering wheelpower steeringworking fluidhydraulic powerhydraulic power steering

The need to reduce the force applied by the driver to the steering wheel (especially for larger trucks), led to the invention of the hydraulic power steering. In addition to the basic gain function reduces the steering gear ratio of the steering mechanism, reducing the number of revolutions of the steering wheel between its extreme left and right positions, when hitting an obstacle, protects the driver's hands due to the cushioning of the steering wheel, allows the driver to force the tracking operation, also called "feeling the road", increases the vehicle's agility and, finally, just reduces operator fatigue, making machine operation easy and comfortable.

Device and principle of operation of power steering

The hydraulic amplifier mechanism is composed of a tank (1) with the working fluid, which through the connecting hose (2) is supplied to other elements of the system. The main purpose of fluid is to transmit the torque from the pump to the hydraulic cylinder. Along the way, it acts as a lubricant for all moving and mating parts. Pump (3) mounted on the engine and is driven from the crankshaft through a belt transmission. The working fluid from the pump is sent to the distributor (6), where depending on the mode of operation comes into a certain cylinder chamber or back into the tank. Fluid pressure in the cylinder is converted into movement of the piston and the stem, which act on the steering mechanism (5) by rotating the steering arm (4). Fry through a system of levers rotates the wheels to the desired value.

Signs of malfunction of the hydraulic amplifier

Often malfunction of the power steering according to he, emitting the characteristic hum and moans and various noises from the front axle. Deterioration and contamination of the working fluid, its insufficient quantity in the tank, wear of bearings, oil seals and other parts, ingress of air in suction line – these are the main causes of noise of hydraulic power steering. If the steering makes noise only when turning to lock the steering wheel, you most likely stalled the drive belt or on the surface of the working end faces of the stator elements of the pump formed burrs. "Safe again" tightening the belt or replacing the pump entirely. The appearance of a spasmodic effort of the steering wheel or jamming is evidence that because of air getting in the line of power they formed an air tube. To get rid of it, simply switch off the engine, and then several times turn the steering wheel all the way both ways. The failure of the pump or dispenser malfunction because of the poor state of the working fluid once you learn to work the wheel will be hard, and to rotate it, will have to exert greater effort than previously.

Tips on maintenance and care power steering

Do not hold the steering wheel in extreme left or right position more than 4 seconds. Boiling in this short span of time, the working fluid will not be able to provide sufficient lubrication of parts of hydraulic system, accelerating their wear. In addition, the back pressure created by the hydraulic pump of the amplifier, creates a huge load on all nodes in the system, leading to premature failure. Even if the steering wheel is not turned all the way in, avoid a sharp increase in engine speed, since the speed of rotation of the crankshaft will increase the speed of rotation of the steering pump. Happens, a sharp increase in pressure in the system and the working fluid simply boils with all the ensuing consequences. Warming up the engine in cold season, do not forget to heat up the working fluid of the hydraulic system. All that is needed is to execute a few smooth turns of the steering wheel from one side to the other, slightly adjusting the steering wheel to the extreme position. Through such manipulation of the thickened cold oil is hot and has reached the desired consistency. Follow the belt tension of the drive of the steering pump, periodically check the fluid level in the reservoir and in time replace not only the oil in the hydraulic system, but his filter. Regularly check the attachment of pipes and hoses of system for leakage of fluid. In case of detection of a leak immediately visit a HUNDRED or a point of service station. Let the power steering of your car will always be OK! Good luck to you!

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