Wiper blades are elements of window cleaning system. They are designed for cleaning the glass from dirt and dust, as well as to ensure proper visibility in adverse weather conditions.
Types of wiper blades
In addition, choosing the wiper blades for your car, pay attention to their size.
The wipers construction
The main element is a rubber wiper blade. It must be firmly pressed to the glass. In the framework structures this is achieved through the elastic plates and frame, in frameless - only by means of the plate.
The composite frame in the frame structure is a rocker arms fixed to each other by hinges. They are held together with blades and elastic plates by clamps. In the winter version of the wipers the frame structure is placed in a protective rubber boot.
In the frameless wipers the blade is imbedded into the solid plastic case. The wiper is pressed against the glass by a flat metal spring.
In hybrid wipers the frame is enclosed in a plastic shell.
Operation of wiper blades
Symptoms of wipers failure
Causes of faulty wipers
The part malfunction is easily identified. Damage, dirt and distortions can be seen with the naked eye.
Therefore, seeing that the glass is cleaned improperly, inspect the wiper work surface to estimate their fit to the glass.
Repair and replacement of wiper blades
Sometimes you can recover the part’s operability by cleaning.
In case when the parts failure is not due to pollution, it is necessary to change the wiper blades entirely, or (half cheaper) the blade rubber.
Replacement is not difficult, and you can easily handle it on your own. Just remove unusable wiper from the lever, by pressing the clip or latch attachment, and then install the new one.
Windscreen Cleaning System auto parts: Wiper arm windscreen washer Master-Sport Automobiltechnik (MS) GmbH - operation method, diagnosis, causes of faults and replacement intervals.
Wiper arms are a component of the wiper. It connects the wiper motor with a rubber strip. Wiper arms pass motor force to the rubber strips in order they to move with the necessary frequency. On the market there is a great variety of wiper arms, because almost every car needs its own model. Wiper arms can be damaged in the result of an accident or because of vandalism. If the wiper arm lays incorrectly on the surface of the window, it is improperly installed.
It doesn’t take too much time to replace the broken wiper arm. In wiper motor there is a joint to which the wiper arm is attached. It is necessary to disconnect the attachment in such a way it to be possible to replace the damage wiper arm. Then you need to fasten a new wiper arm. After this you need to attach rubber strip on the other end of the wiper arm. An ideal variant is a complete wiper arm and rubber strip replacement. Test it and make sure that you have properly replaced the wiper arm. While testing the wiper arm, window must be wet or it is necessary to wet it with the help of window washer.
You need to buy an original spare part the wiper arm to function correctly. Manufacturers provide neat characterizations of car models that need an original spare part. Customer must pay attention to this information. If you install non-original wiper arms, this can result in a breakdown. Do you want to order brake drum, damper strut, clutch pressure plate, flange, radiator grille, muffler, cabin air filter, transmission mount, and other spare car parts? Then our online store is your helper, as there is a wide choice of spare car parts in our online store.
To assess the state of the component, it should first be inspected. If visual diagnostics has shown that the component is rusty or deformed, it is to be replaced. Then lift the wiper arm off the windshield and check the arm fasteners.
Special attention is to be paid to the slots of the wiper arm. They should not be dirty or damaged. To inspect the wiper arms more carefully, they are to be dismantled.
The average service life of the components may reach three years. The service life is directly influenced by the operating conditions and the frequency of operation.
You may notice that the wiper arms need diagnostics by the following symptoms:
Malfunction of the wiper arms may occur due to their wear or improper installation. If the slots in the arms are worn out, the components will run erratically, which entails wiper blades slipping. Incorrect operation of wiper arms may also be a result of deep rust, over-tightening or, on the contrary, loosening the fastening nut.
Skewing of the wiper arms results in their jamming. Wiper blades of excessive length may get stuck, thus causing malfunction of the wipers mechanism.
The malfunction is to be eliminated immediately after it is detected, as poor visibility is the reason of road accidents.
The wiper arm is repairable only if the component is deformed. Repair can only temporarily fix the problem, and does not cancel the necessity of replacement.
To dismantle the component, slide off the wiper cover, and loosen the hex nut. It is not recommended to unscrew it completely, since it is not always possible to align it with the grooves without assistance. Then swing the wiper arm and pull it out.
When installing a serviceable component, be sure to fasten it properly. The tightening torque of hex nut should be 20 Nm. To measure it, use a torque wrench.
A wiper system has a very important function: it removes rain, snow and dirt from the surface of the windscreen, providing good visibility for the driver and the ability to travel...
A wiper system has a very important function: it removes rain, snow and dirt from the surface of the windscreen, providing good visibility for the driver and the ability to travel by car in bad weather. It also helps to keep the rear window clean. Road safety directly depends on the performance of this system. Therefore, driving in rain and snow with faulty wipers is prohibited by law.
Design of the wiper system
The wiper system includes the following components:
Symptoms of malfunction
When the rubber elements are worn or the blades do not adhere to the windscreen tightly enough, the surface is cleaned poorly. Dirt, moisture, and streaks may remain on the glass. Occasionally, the wiper system may produce unusual noise during operation, such as knocking and squeaking. This often results from faulty pivots. If the wipers operate in one mode only or fail to turn on at all, this means either the electric motor or the steering column switch has a malfunction. Faulty washer elements usually have one common symptom: no fluid supply to the windscreen. In some cases, if the wiper system is leaking, you may notice puddles under the car after it’s been parked for a while.
Causes of malfunction
All parts of the wiper system should be correctly adjusted to ensure its proper operation. For example, if the arms are incorrectly installed, the blades will not return to their initial position after switching off. If they reach beyond the windscreen edges during operation, the electric motor might break. Trying to turn the wipers on when the blades are frozen to the glass produces a similar effect. When rubber seals are worn out, water and dirt get inside the hinges, causing them to rust, wear out, and become jammed.
As for the washer jets, using pure water in winter is the most dangerous thing for them. If it freezes and you try to turn on the jets, the pump might fail.