Damping auto parts: Suspension springs Master-Sport Automobiltechnik (MS) GmbH - operation method, diagnosis, causes of faults and replacement intervals.
People use springs for 100 years now. The operating principle is simple but it is still used in almost all life and profession domains whether it's a simple pair of tweezers or it is used in the most complex production machinery in modern industry. There are springs of different size to sustain different loads. Each spring is compressed under load and when the force is removed, it returns to its original state.
In the car spring serves to keep the same distance between the car body and ground. Sure, it varies in the place of the spring deflection. But the distance is equalized due to the force, without which this technique would be left up directly to the motor vehicle components and car driver. It is very important the spring to be correctly installed. If there are worn-out or broken details, it is necessary to replace them. Malfunctioning vehicle working components lead to thousands of serious accidents every year.
Also it is very important to install high-quality car parts. Today there are many car parts suppliers of different quality. If you want to be sure in the quality of spare car parts, order them in our online store. We guarantee the lowest prices, the highest quality and the best service. Our innovative user interface design makes it easy to find the right car part for those, who are less familiar with automotive engineering.
If vehicle steerability has deteriorated, and you hear constant knocking when driving, the coil spring may be out of order. The fault should be eliminated promptly, otherwise, any unit of the suspension may fail. If the spring has partially lost its elasticity, and is not replaced in time, it may finally break right on the road, which will result in much more serious consequences.
Faulty springs may be identified visually. However, a better solution would be performing diagnostics at a specialized service station, with the use of proper equipment.
The process of diagnostics in this case will look as follows:
The state of the springs should be assessed during each maintenance. The average lifetime of the components is 200-250 thousand km of mileage. At the same time, the springs are to be compulsorily replaced when the shock absorber is replaced, as well as after an accident where the front and the rear axle of the vehicle have been damaged.
You may notice that the coil spring requires diagnostics by the following criteria:
First, the spring may lose elasticity due to its normal wear. The component may also get damaged due to coils rubbing against each other. When the car is excessively loaded, the springs are compressed to the maximum, which results in their mechanical defects. Chips, cracks and other damage may also occur due to the hitting by stones on the road. Frequent overloading the vehicle, or driving on uneven roads result in reducing the height of the spring. Exposure to increased humidity and thawing chemicals lead to corrosion.
If the springs proved to be serviceable after a careful examination, and there is no need to replace them, swap them from the right side to to left. It makes sense if only one person is using the vehicle, and it is not used for carrying loads. Due to swapping the components, the spring that had not been subjected to loads, while being on the passenger side, will be installed on the driver's side.
The coil springs kit should be replaced with the use of special equipment, so replacement should better be performed at a service station.
Damping auto parts: Shock Absorber Master-Sport Automobiltechnik (MS) GmbH - operation method, diagnosis, causes of faults and replacement intervals.
Shock absorbers are used not only for comfort. Mostly they serve for safety. Shock absorbers provide between wheel and road and stabilize the car. It is very important when you change direction (turn, for example). Shock absorbers’ functioning is based on transformation of kinetic energy into heat. In modern cars mostly are installed hydraulic shock absorbers in which oil and gas are used. So, there are oil and gas-filled shock absorbers.
If the steering wheel vibrates when cornering, this is the sign that the shock absorber failed. Another sign that the shock absorber is faulty is worsening of running characteristics. If the car shakes for a long time after the load is removed from it, this also indicates the failure of the shock absorber. One more sign of failure is oil leak. Shock absorber should be replaced after 100 000 km. If it fails before this run, it is necessary to replace it.
It is necessary to replace both shock absorbers on the same axle. If on the one side there is a new absorber, but on the other an old one, this will worsen running characteristics of the vehicle. Replacement should be done in service centre as it requires special equipment. In our online store there are many inexpensive car parts of high quality. Here you will find damper struts, window lifters, brake disks, brake shoes, turn indicators and taillights. It is worth to compare our prices with those in service centres.
How to detect faults of the shock absorber
The condition of the component should be checked after each 20,000 km of mileage. First, inspect the component. If traces of oil or corrosion are detected, replace the shock absorber. Inspect tires as well (there might be traces of uneven wear). Most often, the component is diagnosed by swinging the front and the rear part of the vehicle. If, after the load is removed, the vehicle performs more than one cycle of swinging, there are deviations in the operation of the shock absorbers. For more detailed inspection it is better to address specialists at a service station.
You may notice that the shock absorber requires diagnostics by the following symptoms:
The reasons of shock absorber malfunction
Most frequently, oil seal and the bush become faulty in the shock absorber. This is caused by their poor quality and improper use. Mechanical damage of the rod and its surface may be due to improper installation of the component. So, for example, the reason for thread stripping on the top part of the rod is the use of a pneumatic impact wrench, which is strictly prohibited. Also, due to incorrect installation, the component may become blocked: the piston rod gets deformed and jammed in the guide. Therefore, installation of the component requires sticking to the rules and using suitable tools.
During operation, shock absorbers are exposed to high loads; therefore, they require timely maintenance. If no attention is paid to a scheduled replacement of dust boots, shock absorbers will lose tightness, and will be exposed to abrasive effect of dirt and corrosion.
Repairing shock absorbers
In case of a fault, address a service station where the specialists will help you to:
Replacing shock absorbers
In case of normal operation, the shock absorber should be replaced once in 3 or 4 years, and in case of aggressive environment — after every 40,000 to 50,000 kilometers of mileage. To avoid vehicle skidding, shock absorbers should be replaced simultaneously on the same axle. To replace a shock absorber, do the following:
A damping system is a set of elements which transfer and distribute loads that occur between the suspension and wheels during driving. They also carry the vehicle’s weight and dampen vibrations whic...
A damping system is a set of elements which transfer and distribute loads that occur between the suspension and wheels during driving. They also carry the vehicle’s weight and dampen vibrations which appear when driving over road irregularities. They counterbalance the inertial forces which affect the vehicle during acceleration and braking.
Design of the damping system
The main components of the damping system are shock absorbers, coil springs, and leaf springs.
Hydraulic (twin-tube) shock absorbers comprise a metal housing containing a cylinder filled with oil. Inside the cylinder, there is a moving piston fitted with holes of various sizes. When the piston rod moves, the fluid flows from one chamber into another through the holes, thus creating resistance that dampens oscillations. Mono-tube (gas-charged) shock absorbers have a floating piston that divides the working cylinder into two chambers. The lower compartment is filled with pressurised gas and the upper one with oil.
The main aim of shock absorbers is to dampen vibrations which appear when the spring extends.
Coil springs consist of a spiral wire with a constant or variable cross-section. They support the vehicle’s body weight.
Leaf springs consist of metal sheets of various lengths joined together with special clamps. They dampen vibrations.
Symptoms of malfunction
Streaks on the housing, excessive rocking of the vehicle while driving over road irregularities, uneven tyre wear, poor steering response, and reduced braking performance indicate shock absorber issues. Car body sagging, its deformation, reduced ride height, hitting the vehicle bottom while driving on bumpy roads are symptoms of bad springs. Similar signs can be observed in case of failing leaf springs.
Causes of malfunction
Temperature fluctuations, dirt, and aggressive chemicals have a destructive effect on rubber parts such as dust boots, bushings, and bump stops. They lose their elasticity and crack. Springs may rust for the same reasons. The rod of the shock absorber deteriorates because of torn boots. Over time, it may even get stuck. Deformed housings of mono-tube dampers caused by impacts lead to similar consequences.