OEM Scion xB Brake Booster

Scion xB Brake Booster Parts and Q&A

• Brake Booster
  44610-12D81
  Q: How to remove the Vacuum Brake Booster on Scion xB?

  A:

  The first step to remove a Vacuum Brake Booster requires draining all brake fluid before washing off fluid contact points with painted surfaces. You should start by removing the windshield wiper arm cover before working on the front wiper arm along with blade assembly on both left and right sides. Moving on, remove the hood to cowl top seal as well as the cowl top ventilator louver on both left and right sides alongside the front Wiper Motor and link. Remove the air cleaner assembly followed by the outer cowl top panel from the procedure. The first step requires disconnecting the clutch reservoir tube of the manual transaxle followed by Brake Master Cylinder and brake actuator assembly removal. The next stage includes removing the instrument panel finish lower panel sub-assembly while disconnecting the brake master cylinder push rod clevis. The process ends with brake booster assembly removal by separating the vacuum hose from the check valve using the clip then removing 4 nuts to remove the assembly without harming brake tubes. Release the gasket from the brake booster assembly while one must loosen the push rod lock nut followed by removing the push rod clevis. The brake vacuum check valve assembly removal process begins with extracting it from the brake booster assembly followed by the grommet removal from the brake booster assembly.
• Brake Booster
  44610-52341
  Q: How to install the brake booster assembly on Scion xB?

  A:

  The brake booster assembly installation starts with mounting the brake booster using new gasket while tightening the 4 nuts to 13 Nm torque. First install the push rod clevis onto the booster but apply lithium soap base glycol grease to the clevis pin before putting on the clip followed by the clevis pin. The clip should be placed in its correct position according to the illustration. First install the brake pedal return spring then connect the vacuum hose to the brake booster and place the clip accordingly. Follow this step by inspecting and readusting the push rod before adding the brake actuator assembly with bracket and completing the assembly with the Brake Master Cylinder. Manual transaxle drivers must install the clutch reservoir tube through the clip until it reaches complete position. Moreover, install the air cleaner cap sub-assembly followed by the battery before pouring brake fluid into the reservoir. The technician must perform air bleeding on the brake master cylinder as well as the Brake Line and clutch line before adjusting brake pedal height and checking brake pedal free play and reserve distance. First check the reservoir brake fluid level and examine brake fluid leaks before connecting the cable to the negative terminal and using an intelligent tester on the brakes.