Windshield Wiper System Mechanics

Components of the Wiper System

The system is composed of several key parts designed to ensure proper windshield clearing. These include the motor, linkage, pivot arms, and blades. The motor provides the rotational force. The linkage transfers this motion across the windshield. Pivot arms connect the linkage to the blades, translating movement into a wiping action. Blades are the rubber components that directly contact and clear the windshield surface.

Linkage System Overview

The linkage typically consists of a series of rods and joints. Its primary function is to convert the rotary motion from the motor into the reciprocal sweep across the windshield. Proper adjustment and lubrication of these components are crucial for efficient and quiet operation.

Potential System Faults

Common issues include worn pivot points, binding of linkage components, a failing electric motor, damaged blade attachment points, and corroded or seized mechanisms. These faults can manifest as erratic motion, slow or no operation, unusual noises, or blades failing to cover the full windshield area.

Access and Disassembly Considerations

Access to the various parts often requires removal of the cowl panel located beneath the windshield. Take careful note of the routing of wiring harnesses and the orientation of parts during disassembly. Protecting the windshield and surrounding body panels is crucial to prevent scratching or damage during the process. Consider disconnecting the battery to avoid electrical shorts or accidental activation of the motor.

Inspection and Diagnosis

Thoroughly inspect all components for wear, damage, and corrosion. Check pivot points for excessive play. Examine the motor for signs of overheating or electrical issues. Test the motor's operation with a multimeter. If the motor is functioning correctly, the problem likely lies within the mechanical linkage.

Component Selection

Replacement parts should match the original equipment manufacturer (OEM) specifications or meet equivalent performance standards. Consider the quality and warranty offered by the supplier. Ensure that all necessary hardware, such as fasteners and clips, is included with the replacement part.

Assembly and Adjustment

Follow the manufacturer's recommended procedure for assembly. Lubricate all moving parts with a suitable grease. Pay close attention to the alignment of the pivot arms and the blade position on the windshield. After reassembly, test the system thoroughly to ensure proper operation. Adjustments may be necessary to achieve full windshield coverage and prevent the blades from colliding with the cowl or each other.