OEM 2005 Scion xB Brake Master Cylinder

2005 Scion xB Parts Questions & Experts Answers

• Q: How to replace the brake master cylinder sub-assembly on 2005 Scion xB?

  A: The first task in brake master cylinder sub-assembly replacement is to drain brake fluid before washing off any fluid that touches painted surfaces. The first step includes removing the air cleaner cap sub-assembly while also disconnecting the clutch reservoir tube through clip removal. The next step involves disconnecting the level warning light switch connector along with a tool called Special Service Tool: 09023-00101 to remove the two brake lines from the brake master cylinder. You should pull out the brake master cylinder after you remove its two nuts. The procedure for the brake master less reservoir tank cylinder sub-assembly requires users to extract the reservoir stopper while unmounting the reservoir and two grommets and then releasing the cap and strainer. For brake master less reservoir tank cylinder sub-assembly installation you must lubricate the two grommets with lithium soap base glycol grease before putting them into place followed by the cap and strainer. Refasten the reservoir assembly by placing the stopper correctly. Measure the brake booster push rod clearance using an accessory tool with chalk applied to its tip when the system has no vacuum presence. The proper clearance measurement should show 0 mm or 0 inch. To achieve the proper brake pedal height position when the clearance exceeds normal range operators should employ Special Service Tool: 09737-00020 to adjust the push rod length as well as the protruding adjusting bolt. This operation must be done while maintaining sufficient brake pedal depression. The brake master cylinder requires installation onto the booster through two nuts which demand torque of 13 Nm (127 kgf-cm, 9 ft. lbs.). Subsequently, Special Service Tool: 09023-00101 assists in reconnecting the brake lines with 15 Nm (155 kgf-cm, 11 ft. lbs.) torque before connecting the level warning light switch connector. Once the clutch reservoir tube gets connected with a sliding clip the air cleaner cap sub-assembly goes in place followed by brake fluid filling in the reservoir along with master cylinder and clutch line bleeding procedures and fluid level and fluid leakage inspections.