OEM 2003 Toyota Matrix Brake Master Cylinder

2003 Toyota Matrix Parts Questions & Experts Answers

• Q: How to service and repair the brake master cylinder on 2003 Toyota Matrix?

  A: To service and repair the brake master cylinder you should begin by draining the brake fluid while promptly cleaning painted surfaces affected by any fluid drips. Services on the brake master cylinder begin with removing the air cleaner cap sub-assembly followed by disconnecting the brake fluid level switch connector and sliding the clip to release clutch reservoir tube No.1 for manual transmission. Special Service Tool: 09023-00100 enables two brake tube disconnects onto the master cylinder and the No.1 way. Pull the master cylinder and No.1 way as well as vacuum check valve bracket after removing the two nuts. Start the brake master cylinder reservoir sub-assembly removal by unscrewing the reservoir stopper screw then succeeding with two cylinder reservoir grommet extraction. The procedure for the brake master cylinder kit begins by using a vise with two aluminum plates to hold the master cylinder in place then users must remove the O-ring while pushing the piston to extract the snap ring using snap ring pliers followed by removal of the piston stopper bolt with its attached gasket. Proceed to extract the No.1 piston sub-assembly straight out to protect the cylinder bore and utilize a cloth together with two wooden blocks to carefully push out the No.2 piston sub-assembly maintaining at least 100 mm (3.94 inches) distance between cloth and blocks. Prior to kit installation both piston sub-assemblies should be treated with lithium soap base glycol grease before carefully inserting them into the master cylinder without harming rubber lips. Place a new gasket along with the piston stopper bolt before torquing it to 10 Nm (10 kgf-cm) followed by installing the snap ring. To install the master cylinder you should first grease the new O-ring before placing it onto its designated position. The brake master cylinder reservoir sub-assembly demands lubrication for its two grommets before screw installation and 1.8 Nm (18.4 kgf-cm, 15.9 inch lbs.) torque application. Use Special Service Tool: 09737-00012 to check the brake booster push rod clearance at 0 mm (0 inch) while adjusting it correctly using Special Service Tool: 09737-00020. To finalize the procedure install the master cylinder followed by a connection of No.1 way and vacuum check valve bracket using two nuts with final torque set to 12.5 Nm (127 kgf-cm, 9 ft. lbs.), then continue by attaching brake tubes using Special Service Tool: 09023-00100 with a torque of 15.2 Nm (155 kgf-cm, 11 ft. lbs.) and finishing with the reconnection of clutch reservoir tube No.1 and brake fluid level switch connector. The process concludes by mounting the air cleaner cap sub-assembly and filling the reservoir with brake fluid and bleeding the master cylinder and brake line before checking the fluid level and examining for brake fluid leaks.