Modern braking system can no longer be bled in the traditional way on account of the many different Anti-Lock Braking Systems (ABS).
The old “foot pump” method is no longer adequate to guarantee satisfactory bleeding of the brake system. An incorrect procedure when bleeding can critically impair the safety of the brake system and the ABS.
A brake system can only operate safely when it has been bled correctly. For this reason manufacturers of ABS systems like Continental Teeves & Bosch & car manufacturers like VW, Audi, Daimler Benz, Peugeot, Citroen etc also recommend the use of pressure bleeder over any other method for the purpose of bleeding.
The STIERIUS brake bleeding system operates with a constant adjusted working pressure which is very important in bleeding hydraulic brake systems.
The advantage of using the Brake Bleeding System are:
Each unit also includes a recovery bottle which indicates the amount of brake fluid displaced.