Toyota 47207-08010 Brake Master Cylinder Sub-Assembly Less Reservoir Tank

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To access the air cleaner assembly, begin by unscrewing the cowl cover and disconnecting the electrical connector of the brake fluid level warning switch but it must be noted that the fluid reservoir is located remote from the air cleaner. At least, you should use a syringe to suck up as much of the fluid as possible from the reservoir; additionally, prepare rags under the fittings, as well as caps (or plastic bags for the ends of the lines if separating them). Now, shut off the fluid line with big pliers from the reservoir without releasing the spring locked clip at the end of the Brake Master Cylinder, so that no brake fluid runs out, as it stains the paint work. Unscrew the fittings at the ends of the used brake line connections entering the Brake Master Cylinder with flare nut wrench to avoid rounding-off the flats, then remove the brake lines and plug the ends to prevent contaminating them. Loosen the nuts that secure the Brake Master Cylinder to the power booster but do not fully unscrew them and unthread the Brake Master Cylinder from the studs with the remote reservoir and its hoses still connected without spilling any fluid. For the installation of new Brake Master Cylinder, bench bleed it; it is secured on the bench in the vise with bleeder tubes connected to the outlet port. Add the brake fluid recommended into the reservoir and slowly force the piston in the Brake Master Cylinder until it squeezes out air and redo this until air is not visible. Once the bleed tubes have been disconnected and the plugs inserted, the Brake Master Cylinder should be bolted on the studs on the power brake booster and the nuts tightened with your fingers only. Pass the brake line fittings through the Brake Master Cylinder, such that they cannot be stripped, and then give the mounting nut and brake line fittings as much torque as they are capable of receiving. Add fluid into the Brake Master Cylinder reservoir and at this time turn the cylinder reservoir upside down and pump the brake pedal by an assistant while loosening the fitting nut to allow for air and a clear fluid to come out. Last but not the least, perform the brake system functionality test cautiously before getting back to normal use of the car.