Car windscreen wiper arm rear and front

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.

How to identify a faulty wiper arm

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:

• wipers move with different amplitude, or with jerks;
• the windshield is not cleaned completely;
• the wipers vibrate during movement.

The reasons of wiper arms malfunction

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.

Repairing and replacing wiper arms

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.