OEM Scion xD Brake Master Cylinder

Scion xD Brake Master Cylinder Parts and Q&A

• Master Cylinder
  47201-52432
  Q: How to install the brake master cylinder on Scion xD?

  A:

  Installation of the brake master cylinder begins with inspecting the Brake Booster push rod without brake booster vacuum while executing brake pedal operations with the stopped engine several times. You need to replace the brake master cylinder sub-assembly if so. Then apply chalk to the stopper tool from the new assembly and place it on the assembly where you must measure the clearance between rod and tool that should be 0 mm (0 inch). Use Special Service Tool: 09737-00020 while holding a 7 mm socket driver to adjust the push rod when the clearance differs from specifications. As the next step install an O-ring onto the brake master cylinder sub-assembly before fastening both the assembly and wire harness clamp bracket with two 13 Nm (127 kgf-cm, 9 ft-lbf) torques. The installation of 2 brake tubes through a union nut wrench requires torquing to 15 Nm (155 kgf-cm, 11 ft-lbf) by direct wrench application but reduces to 14 Nm (144 kgf-cm, 10 ft-lbf) when the wrench is parallel to the torque wrench. Connect the brake fluid warning switch connector while attaching the clutch reservoir tube with its clip. Start by installing and securing the battery carrier system along with the battery tray before putting the battery in place then complete the installation with brake fluid addition to the reservoir. Bleed the master cylinder followed by the Brake Line and brake actuator then check the reservoir fluid level and search for brake fluid leaks. The louver center for the cowl top ventilator should be installed at the end.
• Master Cylinder
  47201-52422
  Q: How to remove and replace the brake master cylinder on Scion xD?

  A:

  When changing the brake master cylinder you must release the vacuum from the booster by pressing on the brake pedal several times before draining brake fluid and washing off any fluid that touches painted areas. Begin by extracting the cowl top ventilator louver center and the battery which is situated within its battery tray and battery carrier. The clutch reservoir tube needs disconnection in manual transaxle vehicles through removal of its retaining clip. The brake master cylinder sub-assembly removal process begins with disconnecting the brake fluid level warning switch connector before you separate the two brake tubes from the sub-assembly using a union nut wrench then remove the two nuts. Keep the master cylinder safe from impacts while handling it and avoid putting back in use a dropped master cylinder. The sub-assembly must always rest in a horizontal position or tip it downward to prevent the piston from detaching. Foreign objects must not contact the master cylinder piston but if contamination happens employees should clean the piston with a cloth followed by using lithium soap-based glycol grease spread evenly around the piston circumference while completely avoiding other types of fluid or grease.