OEM Scion xA Brake Master Cylinder

Scion xA Brake Master Cylinder Parts and Q&A

• Master Cylinder
  47207-52012
  Q: How to service and repair the brake master cylinder on Scion xA?

  A:

  Brake service and repair of the master cylinder begins by draining brake fluid before washing off fluid that reaches painted surfaces. The service begins by removing both the air cleaner cap sub-assembly and disconnecting the clutch reservoir tube by sliding the clip. The brake master cylinder subassembly needs removal after disconnecting the level warning light switch connector and using Special Service Tool: 09023-00101 to disconnect the 2 brake lines followed by removing 2 nuts to pull out the brake master cylinder. The brake master cylinder reservoir sub-assembly requires users to extract the stopper from the reservoir before removing it along with 2 grommets and separating the cap and strainer from its base. The installation process requires lubricating two new grommets with lithium soap base glycol grease then placing them on the brake master cylinder followed by the cap and strainer on the reservoir before securing the reservoir by reinstalling its stopper. Install the brake master cylinder to the booster by secure it with 2 nuts reaching a torque of 13 Nm (127 kgf-cm, 9 ft. lbs.). Then use Special Service Tool: 09023-00101 to fasten the 2 brake lines with a torque of 15 Nm (155 kgf-cm, 11 ft. lbs.) without the tool or 14 Nm (143 kgf-cm, 10 ft. lbs.) with it, utilizing a torque wrench that has a 30 cm (11.81 inch) fulcrum length. First connect the level warning light switch connector then install the clutch reservoir tube before placing the air cleaner cap sub-assembly back in position while filling the reservoir with brake fluid then releasing air from the brake master cylinder and brake line and clutch line. The final safety check involves assessing brake fluid in the reservoir while also looking for any evidence of fluid leakages.
• Master Cylinder
  47207-52041
  Q: How to replace the brake master cylinder sub-assembly on Scion xA?

  A:

  The replacement process for the brake master cylinder sub-assembly (from April 2004) demands users to drain brake fluid while cleaning off paint-soluble fluid residues. Begin by removing the air cleaner cap sub-assembly followed by disconnecting the clutch reservoir tube through its clip removal. The process begins by disconnecting the level warning light switch connector followed by using Special Service Tool: 09023-00101 to disconnect the two brake lines from the brake master cylinder. Unscrew the two brake master cylinder nuts before utilizing hand force for brake master cylinder removal. To service the brake master less reservoir tank cylinder sub-assembly begin with removing the reservoir tank stopper followed by removing the reservoir together with two grommets and removing both the cap and strainer. The installation process of the brake master less reservoir tank cylinder sub-assembly requires applying lithium soap base glycol grease to both grommets before installing them and then adding the cap and strainer afterward. The reservoir assembly must get reinstalled with the stopper properly fitted to its groove. Use the off-engine period to check and modify the Brake Booster push rod vacuum state while pressing the brake pedal several times. Use an accessory tool with chalk on its tip to measure the clearance distance between the brake booster assembly push rod and the tool that should be exactly 0 mm (0 in.). Use Special Service Tool: 09737-00020 to fix the push rod before adjusting the length of the protruding adjusting bolt when the brake pedal stands fully depressed until the clearance measurement shows within range. Reconnect the two brake lines through the use of Special Service Tool: 09023-00101 before torquing to 15 N-m (155 kgf-cm, 11 ft-lbf). Next, install the brake master cylinder to the booster with two nuts torqued to 13 N-m (127 kgf-cm, 9 ft-lbf) before connecting the level warning light switch connector. To complete the procedure, reconnect the clutch reservoir tube using the clip while installing the air cleaner cap sub-assembly then fill the reservoir with brake fluid followed by bleeding the master cylinder and clutch line before checking the fluid level and verifying brake fluid leakage.