Toyota Brake Booster
How does a power brake allows you to bring two-n-half tons of Toyota Land Cruiser to a stop with a little caress of your step on the brake pedal? The answer is Brake Boosters. Today hydraulic brake system with power brake is used in almost every subcompact for stopping reason. So, one can enjoy cruising for longer distance, without tired legs because brake boosters are found only in power brakes.
What is a brake booster?
The moment you open the hood of your Toyota, you may notice a round, metallic, black brazier situated at the derriere of the engine stall which is called the Toyota brake booster. Brake booster is an important mechanical, vacuum-driven part which is totally in charge of delivering vacuum pressure to the entire power brake system, and that is why known as vacuum booster or vacuum servo.
Can you create something out of nothing? After all vacuum is a voluminous space, devoid of matter where gas pressure is much-much lower than the atmospheric pressure. "Nature abhors a vacuum", here Aristotle meant that the higher is the vacuum, and greater will be the atmospheric push to fill up the void. So, is the principle of working of a Vacuum brake booster which disproves the Aristotle’s long-held assumption. It is a silent device which does not need gasoline or electricity.
Brake booster unit consists of five parts: the booster piston, the body, the piston return spring, the control valve mechanism, and the reaction mechanism. The diaphragm is a bridging mechanism of two chambers in a booster body, namely the variable pressure chamber and the constant pressure chamber. A check valve which is a one-way valve designed to put off seepage of the vacuum inside the vacuum booster.
Unless you have strong leg muscles, be thankful that your Toyota has a brake booster cuddled between the brake master cylinder and firewall or else you would have dead beat limbs. These boosters convey a greater amount of braking power with less effort or minimum stress on the brake pedal.
Symptoms of a faulty Toyota Brake Booster
- A low brake pedal may result into a bad brake power boost unit.
- A hard brake pedal can be caused due to many reasons such as low engine vacuum, a leak in vacuum hose, a damaged booster, a faulty check valve etc.
- You will hear a scraping noise which is generally due to a metal-to-metal contact, anywhere in the brake system.
- The vibration between the brake disc pads and brake caliper may result into a brake squeal.
- Sometimes brake may pull to one side because of the differences in rotor thickness, material, type and condition.
Solution of a Toyota Brake Booster
If you realize that your Toyota brake booster is either decayed or damaged, then you must rush without any delay to get its replacement as soon as possible. Also, you must replace other broken parts too, if any. A worn-out part may badly affect other parts in the brake system of your sedan for example leakage in the master cylinder may cause booster failure. No matter whether you owe a Toyota car model like Toyota Camry, Toyota Prius, Toyota Corolla or any of the SUVs like Toyota Land Cruiser, Toyota FJ Cruiser, and Toyota 4Runner or Trucks like Toyota Tacoma and Toyota Tundra; all of them has s specific brake booster which is designed as per the car model and the year of manufacturing.