47201-33110 Brake Master Cylinder for Toyota

As the pressure center of the hydraulic brake system, Toyota's 47201-33110 brake master cylinder accurately converts the driver's pedal force into hydraulic energy, and achieves balanced distribution of front and rear wheel braking force through a dual-chamber series structure. This component is cast with a high-strength aluminum alloy and cast iron composite material. The master cylinder has a diameter of 25.4 mm and can withstand 32MPa hydraulic pressure.

47201-33110 Brake Master Cylinder For Toyota adopts a dual-piston compensation valve structure and is equipped with fast filling valve technology to ensure hydraulic stability under special working conditions. The piston sealing system is made of high-temperature resistant fluororubber material with a temperature range of -40℃ to 180℃. With the nitriding hardened guide pin system, the hydraulic pressure fluctuation amplitude is less than 0.3MPa after 15 consecutive 100-0km/h emergency braking, and the friction coefficient is stable in the range of 0.38-0.42. Its modular design is compatible with the intervention requirements of the ABS system, and the coordinated error with the brake pressure sensor is controlled within 0.1MPa.

If the brake pedal virtual position of the vehicle increases or the braking force is unevenly distributed during driving, the master cylinder sealing system should be checked first. After the mileage exceeds 100,000 kilometers, if the scratch depth on the inner wall of the master cylinder exceeds 0.1mm or the piston stroke deviation exceeds 3mm, it is recommended to replace the assembly directly. During installation, a torque wrench should be used to tighten the oil pipe interface, and the secondary pressure evacuation method should be used with DOT4 standard brake fluid to eliminate residual bubbles in the system.