RAV4 | 2010-2018 | Adventure, Base, Hybrid Limited, Hybrid SE, Hybrid XLE, LE, Limited, Platinum, SE, Sport, XLE | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS, 6 Cyl 3.5 L GAS
Tacoma | 2010-2023 | Base, Limited, Pre Runner, SR, SR5, Trail, TRD Pro, TRD Sport, X-Runner | 4 Cyl 2.7 L GAS, 6 Cyl 3.5 L GAS, 6 Cyl 4.0 L GAS
Q: How to replace the Brake Master Cylinder Reservoir Sub-Assembly on Toyota Highlander?
A: The first step to change the Brake Master Less Reservoir Tank Cylinder Sub-Assembly includes draining brake fluid while taking care it does not contact painted surfaces. Begin by removing the air cleaner assembly with hose and proceed to detach the front suspension brace sub-assy upper center through wire harness clamp and ABS R/B disconnection when needed followed by unfastening the four nuts on the brace. The brake fluid level warning switch connector needs removal along with potential actuator No. 1 hose detaching from the reservoir by sliding a clip. Use Special Service Tool: 09023-00100 to remove the 2 brake lines before taking out the check valve bracket and master cylinder sub-assy by removing its 2 nuts. You should also remove the brake master cylinder gasket and the reservoir tank stopper before pulling out the master cylinder reservoir sub-assy and removing the 2 grommets. Lithium soap base glycol grease should be applied to the new grommets before they are installed in the master cylinder reservoir sub-assy, followed by the complete assembly placement to the master cylinder. The reservoir tank stopper should be installed with proper fitment before applying a new gasket. When replacing the master cylinder use the accessory tool which requires chalk, place it against the brake booster to measure the push rod clearance and adjust using Special Service Tool: 09737-00020. Lock the master cylinder sub-assy and check valve bracket into place using 2 nuts that should be torqued up to 13 Nm (130 kgf-cm, 9 ft. lbs.). Then use Special Service Tool: 09023-00100 to torque the 2 brake lines to 15 Nm (155 kgf-cm, 11 ft. lbs.). The job requires reconnection of the actuator No. 1 hose followed by attaching the brake fluid level warning switch connector. Reinstall the front suspension brace sub-assy upper center using 4 nuts while torquing them to 80 Nm (815 kgf-cm, 59 ft. lbs.). Also reconnect wire harness clamps where needed. Reinstall the air filter system while attaching the hose before filling the brake fluid reservoir and bleeding master cylinder lines and brake tube. The procedure ends with checking the fluid level and inspecting the system for any fluid leakage.
Q: How to service and repair the Brake Master Cylinder Reservoir Sub-Assembly on Toyota Sienna?
A: The service and repair process for Brake Master Less Reservoir Tank Cylinder Sub-Assembly starts with fluid drainage from braking systems followed by cleaning paint surfaces exposed to drained fluid. First disconnect the battery negative terminal followed by removal of the air cleaner assembly with hose and the cowl top panel sub-assembly outer front. It will then become necessary to disconnect the brake master cylinder using Special Service Tool: 09023-00100. The tool enables you to disconnect both brake tubes while sliding the clip to detach the reservoir hose and removing the two nuts. To access the brake master less reservoir tank cylinder sub-assembly securely position the brake master cylinder between soft-jawed vise and aluminum plates before removing the O-ring with a screwdriver. The brake tube requires Special Service Tool: 09023-00100 to disconnect for further detachment of two nuts and two bolts while removing the sub-assembly from its position. Drop the No.3 piston from the diameter converting unit and the No.1 piston from the plunger master cylinder because replacement parts cannot be used if these components fall. A pin punch of 5 mm diameter together with a hammer should be used to remove the pin before taking out the brake master cylinder union and two grommets. For brake master less reservoir tank cylinder sub-assembly installation you should apply lithium soap base glycol grease to the grommets then insert the master cylinder union with the pin while adding the two new O-rings. Fasten the sub-assembly with two nuts and two bolts while torquing them to 25 Nm (255 kgf-cm, 18 ft. lbs.) then check for proper installation of the No.3 piston without looseness. After connecting the brake tube to the brake master cylinder using Special Service Tool: 09023-00100 and torquing it to 15 Nm (155 kgf-cm, 11 ft. lbs.) install a new O-ring before continuing. Reinstall the brake master cylinder with two nuts and torques them to 13 Nm (130 kgf-cm, 9 ft. lbs.) but before doing so reconnect the reservoir hose then use Special Service Tool: 09023-00100 to restore connection of the two brake tubes which demands a torque of 15 Nm (155 kgf-cm, 11 ft. lbs.). Proceed with the following brake system installation steps by filling the reservoir with brake fluid, bleeding both the master cylinder and brake line followed by checking reservoir fluid level, examining for leakage, reattaching the cowl top panel front outer and inspecting brake pedal height. Finish by testing the brake actuator with a Toyota hand-held tester.