OEM 2006 Toyota RAV4 Brake Master Cylinder

2006 Toyota RAV4 Parts Questions & Experts Answers

• Q: How to service and repair the Brake Master Cylinder on 2006 Toyota RAV4?

  A: Service and repair operations for the Brake Master Cylinder require proper handling of the master cylinder with downward-facing tip to prevent piston fall-out and protecting its piston through cleaning with a cloth and application of lithium soap base glycol grease on its outer edge. Start the service by removing the air cleaner case sub-assembly followed by draining the brake fluid while washing off all liquid that touches painted surfaces. To disconnect the brake lines labeled B from the master cylinder use Special Service Tool 09023-00101 followed by removing two nuts before pulling the master cylinder out of the brake booster when the engine stops and brake pedal is depressed several times. The release of vacuum pressure in the brake booster should be completed by removing the connector labeled A for the brake fluid level warning switch. The O-ring step should be followed by master cylinder disassembly where you must remove the brake master cylinder ring pin and reservoir sub-assembly, reservoir grommet, filler cap assembly, strainer, while maintaining the piston secure and keeping it clean across all steps. The installation process begins with applying lithium soap base glycol grease to two new grommets before placing the brake master cylinder reservoir strainer followed by the filler cap assembly then finally the grommet. Next install the reservoir sub-assembly and ring pin. The procedure requires installing a new master cylinder O-ring before securing the master cylinder to the booster with two nuts reaching 12.5 Nm (127 kgf-cm, 9 ft. lbs.) tightening. Next, reconnect the two brake lines named B, which need torque of 15.2 Nm (155 kgf-cm, 11 ft. lbs.) through normal methods or 14 Nm (144 kgf-cm, 10 ft. lbs.) with the special tool based on a 30 cm (11.81 inches) torque wrench fulcrum length. Reconnect the warning switch (labelled A) followed by fluid charging the reservoir while bleeding the brake components including the cylinder, brake lines and ABS and traction mechanism respectively before assessing fluid level and inspecting for any leaks prior to air cleaner case reinstallation.