What Causes Water Streaks on Windshield Wipers?
2 Answers
Water streaks on windshield wipers are caused by uneven pressure distribution, resulting in incomplete cleaning. Below is relevant information about windshield wipers: 1. Introduction: Windshield wipers, also known as wiper blades or windscreen wipers, are devices used to remove raindrops and dust from a vehicle's windshield to improve driver visibility and enhance driving safety. Due to legal requirements, almost all vehicles worldwide are equipped with wipers. Rear windows of hatchbacks and SUVs also feature wipers. Beyond automobiles, other transportation vehicles such as trains and trams are equipped with wipers. Certain engineering machinery like cranes also incorporate wipers. 2. Structure: Composed of an electric motor, reducer, four-bar linkage mechanism, wiper arm spindle, and wiper blade assembly, its primary function is to clear rain, snow, and dust that obstruct visibility on the windshield.
I've been a truck driver for nearly 30 years and have encountered the issue of wiper streaks countless times, each requiring patient troubleshooting. The most common causes are hardened or aged rubber blades losing proper glass contact, leaving streak marks; stubborn oil film buildup from urban exhaust or insect residue on the windshield; improper wiper installation with loose fittings or incorrect angles needing readjustment; or weather impacts like frozen blades in cold or rapid rubber degradation in heat. The solution is straightforward: inspect wiper blade flexibility and cleanliness every six months, replacing them when hardened or dirty (silicone blades offer better durability). Use dedicated glass cleaner during car washes to remove oil film. Never neglect this - streaky vision during rainy nights significantly increases accident risks. Developing regular maintenance habits prevents major headaches.
