OEM 2005 Toyota Land Cruiser Brake Master Cylinder

2005 Toyota Land Cruiser Parts Questions & Experts Answers

• Q: How to service and repair the brake master cylinder on 2005 Toyota Land Cruiser?

  A: Start the procedure of servicing and repairing the brake master cylinder by clamping the hydraulic brake booster inside a vise using Special Service Tool 09630-00014 (09631-00142) and Special Service Tools 09950-60010 (09951-00180, 09951-00190). The process starts with disconnecting the fluid level warning switch connector followed by removing the bolt and clamp. Before continuing, unscrew the reservoir cap followed by removing the three set screws that allow the reservoir to be extracted. Apply 1.7 Nm (17.5 kgf-cm, 15.2 inch lbs.) of torque before taking out the three grommets. A torque of 25 Nm (260 kgf-cm, 19 ft. lbs.) is required to loosen the lock nut before removing the clevis and lock nut with the Special Service Tool: 09630-00014 (09631-00142). The cylinder boot should be removed afterward. Remove brake actuator tube No. 1 with a torque of 15 Nm (155 kgf-cm, 11 ft. lbs.) using Special Service Tool: 09023-00101. To access the booster pump assembly technicians must take off the actuator hose followed by 4 screws and wire harness and then proceed to remove 2 bolts from the accumulator bracket and finally extracting 2 bolts from the booster pump motor assembly while uninstalling the bolt from the first bracket pump and following this with removal of 2 washers, 2 cushions and 2 collars and sleeve after which the technicians must remove 2 bolts and cushion from second pump bracket. The master cylinder pressure sensor should be removed using a 30 mm deeper socket wrench set at 81 Nm (830 kgf-cm, 60 ft. lbs.) torque with part No: 89637-30050 for the replacement. The piston removal process begins with screwdriver pressure on the piston while pushing the snap ring out with a pin which allows extraction of the piston without harming the cylinder bore. Apply Sensor 09318-12010 as a special tool to detach the accumulator from the booster pump while applying torque of 54 Nm (550 kgf-cm, 36 ft. lbs.). The removal process continues with silencer tube springs and O-rings. An inspection of the hydraulic brake booster pump motor requires applying battery leads to its terminal connections. The accumulator disposal requires placement into a vise with cloaked protection and precise saw cutting on the stretch area only for gas exhaust purposes. The reassembly process must proceed exactly in the opposite direction of disassembly while making sure the accumulator bracket fits within these specifications: A + B should be no greater than 4.1 mm (0.161 inch) and C must exist between 0.3 - 3.8 mm (0.012 - 0.150 inch) while A and B need at least 0.3 mm (0.012 inch) space.