Toyota 47050-35010 Brake Booster Assy, W/Master Cylinder

Before deciding to overhaul the Brake Brake Master Cylinder, it is important to check the availability and cost of a new or factory rebuilt unit, as well as the availability of a rebuild kit. When removing the Brake Master Cylinder, it is necessary to place rags under the brake line fittings and cover the ends of the lines with caps or plastic bags to prevent fluid from spilling and damaging painted surfaces. The brake fluid level warning switch electrical connector should be unplugged, and the tube nuts at the ends of the brake lines should be loosened using a flare-nut wrench. The brake lines should be pulled away from the Brake Master Cylinder slightly and plugged to prevent contamination. The Brake Master Cylinder can then be removed by removing the mounting nuts, taking care not to kink the hydraulic lines. The reservoir cap should be removed and any remaining fluid discarded. When the Brake Master Cylinder is removed, the entire hydraulic system must be bled, which can be done more efficiently if the Brake Master Cylinder is filled with fluid and bench bled before installation. The Brake Master Cylinder should be mounted in a vise with soft jaws, and the reservoirs should be filled with brake fluid. The piston should be depressed several times to expel any air, and plugs should be temporarily installed in the holes when the bleeding procedure is complete. Finally, the Brake Master Cylinder can be carefully installed by reversing the removal steps, and the brake system should be bled.