Toyota 47028-48041 Brake Master Cylinder Sub-Assembly W/Plate

You must carefully remove and install the brake master cylinder of Highlander models to keep it from breaking and working correctly. First, cover all surfaces to stop brake fluid from ruining paint, and wipe up any liquid right away. First, take out the top engine cover, strut brace (when present), the air filter housing and air duct, if you need to. Take the liquid from the storage tank with a syringe. Hopefully, you won't have to disconnect it to get good access. Unplug the brake fluid warning switch power supply, lay rags under the connections, and put caps on both brake tube ends. Separate the brake line fittings, move the lines aside, remove the brake master cylinder's nuts from the power booster carefully, and keep fluid from spilling. If dropped, the brake master cylinder must be replaced. Follow these steps to install the new brake master cylinder: Hold the brake master cylinder in place while bleeding out air, fix the bleed tubes, and put the correct brake fluid in the reservoir. Press on the pistons slowly to force air out, keep going until you see no more bubbles. Insert plugs into opened ports of the booster. Adjust the pushrod length if needed. Then add the reservoir cover. Twist the brake master cylinder tightly onto the power brake booster and carefully join the brake line parts, being careful not to damage the threads. Our team empties the reservoir of fluid, using an assistant to push the brake pedal to get air and fluid out of the system. If brake lines were taken out, you need to bleed them from the ABS actuator too. When setup is done, reverse the steps you used to install and test your brakes to make sure everything works as it should before you drive the vehicle.