What is the function of the small rubber piece inside the brake fluid reservoir of the Volkswagen Lavida?
4 Answers
The small rubber piece inside the brake fluid reservoir of the Volkswagen Lavida is primarily used to measure the level of the brake fluid. Brake Fluid: The function of brake fluid is to serve as a functional liquid (medium) that stops the rotation of the wheels. It not only transmits energy but also provides anti-corrosion, anti-rust, and lubrication effects. Brake Fluid Classification: Brake fluid is categorized into three types: DOT3, DOT4, and DOT5.1. DOT3 is generally an alcohol-ether type brake fluid (polyglycol or propylene glycol), while DOT4 and DOT5 are ester-based (with the addition of a large amount of borate ester on the basis of the alcohol-ether type) and silicone-based (refined from high-cost silicone base oil), respectively.
This small rubber piece is actually a filter screen installed in the brake fluid reservoir to prevent contaminants from mixing into the fluid. Think about it, the brake system is most afraid of impurities. If dust or sludge gets in, it can cause unstable oil pressure, resulting in slower response or even failure when braking. I've seen a friend's car where the filter was clogged and not replaced, causing the pedal to become soft while driving, nearly leading to an accident. So, it's like a goalkeeper, constantly filtering out impurities for you. It's best to check the reservoir during every maintenance. If the cap is transparent, you can even see if the filter is clean; if it turns black, clean or replace it immediately. Don't underestimate it, brake safety relies on meticulous maintenance, and never attempt to disassemble it yourself—damaging it can lead to troublesome repairs.
This thing is a filter screen, fixed inside the oil reservoir to prevent dust and impurities. When I changed the brake fluid before, the mechanic specifically reminded me: dirt getting into the system can wear out the pistons and seals, leading to reduced braking performance over time. Especially for cars like the Lavida, where the oil reservoir is located in a corner of the engine bay, it's prone to dust accumulation. Just think, it ensures the oil stays clean and uncontaminated, giving you confidence while driving. Usually, take a quick glance at the oil reservoir level—if it's low, add new oil; if it's high, draw some out. If the filter screen gets clogged, you might feel something odd when braking, and it's time to visit the shop for a replacement. Safety first, after all!
That small rubber piece is the brake fluid reservoir filter, whose core function is to filter out impurities. The braking system relies on hydraulic transmission, and mixing in dust can clog the pipelines, affecting brake responsiveness. Owners of older cars may have experienced this: when the filter gets clogged, the car stops a beat slower. Just keep the reservoir clean and clean it regularly.
