What is the rear wiper arm of a car
Automotive rear wiper arm refers to the wiper support structure installed on the rear window glass of an automobile, commonly known as the rear wiper arm. Its main function is to support the rear wiper blade, and make it swing back and forth on the glass through the motor drive, remove the water droplets and dirt on the rear window glass, and ensure that the driver's sight is clear .
Structure and function of rear wiper arm
The rear wiper arm is usually made of metal or plastic and fixed above the rear window glass of the vehicle. It is driven by a motor that causes the wiper blade to swing back and forth on the glass, thereby removing water droplets and dirt. The design of the rear wiper arm allows the wiper blade to adjust the pressure and Angle according to the curved surface of the rear window glass, ensuring an effective wiper .
Rear wiper arm maintenance and replacement
After maintenance, the wiper arm mainly includes regularly checking its working status and cleaning the wiper blade and the wiper arm. If the rear wiper arm is found to be damaged or not working properly, it may need to be replaced. When replacing, follow the specific vehicle model and manufacturer's instructions to ensure that the new rear wiper arm is compatible with the vehicle and properly installed .
The main function of the rear windshield wiper arm is to remove rain and dirt from the rear windshield to ensure that the driver has a clear rear view, thereby improving driving safety . The rear wiper arm is driven by a motor to swing it left and right on the glass to achieve a clean effect.
Working principle
The rear wiper arm works similarly to the front wiper arm in that it is driven by a motor. The motor converts the rotating motion into the reciprocating motion of the scraper arm through the reducer and the four-link mechanism, so as to realize the wiper function . When the driver starts the rear wiper, the motor starts to work, driving the reducer and four-link mechanism, and finally driving the scraper arm to swing on the glass and remove rain or dirt.
Installation position and design features
The rear wiper arm is usually installed on the rear windshield of the car. Due to the design differences of different models, the installation position and design of the rear wiper arm are also different.
The main reasons for the failure of the rear windshield wiper arm and the solutions are as follows :
Blown fuse : check whether the fuse is blown, if it is blown, replace the fuse with a new .
motor fault : check whether the motor is working normally, if the motor has no sound or burning smell, it may be damaged, need to replace the motor .
transmission connecting rod dislocated : Open the hood to check whether the transmission connecting rod is dislocated. If there is dislocation, reconnect it .
The circuit or direction indicator combination switch is faulty : check whether the circuit or direction indicator combination switch is in good condition. If it is damaged, repair or replace the .
aging or damaged : check whether the wiper blade is aging or damaged, replace the wiper blade with a new one if necessary.
Electronic control unit (ECU) failure : Check that the ECU is working properly and repair or replace it if necessary .
Prevention and maintenance recommendations :
Periodically check the fuse : Periodically open the fuse box to check the status of the fuse and ensure that it is in good condition.
Keep wiper blades in good condition : check and replace aging wiper blades regularly. It is recommended to replace them every 1-2 years .
Avoid dry scraping : do not start the wiper when the windshield is dry to prevent damage to the wiper blade and the motor .
lubrication maintenance : Add appropriate amount of lubricating oil to the rubber part of the wiper blade to reduce friction and wear .
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