OEM 2000 Toyota 4Runner Brake Master Cylinder

2000 Toyota 4Runner Parts Questions & Experts Answers

• Q: How to service and repair the Brake Master Cylinder on 2000 Toyota 4Runner?

  A: The servicing process for the Brake Master Cylinder starts by removing the reservoir through unfastening the set screw while torquing it to 1.7 Nm (18 kgf-cm, 16 inch lbs.) before pulling it out. Start by taking away the strainer and cap from the reservoir while also removing two grommets. First place the cylinder in a vise pedestal then fully press the pistons using a screwdriver before uninstalling the piston stopper bolt with gasket at 10 Nm (100 kgf-cm, 7 ft. lbs.). The screwdriver must push the piston while snap ring pliers remove the ring by taping the screwdriver tip before removal. Remove the No.1 piston together with its spring by straight out extraction that protects the cylinder bore while rebuilding the system with attention to the piston rubber lips for protection. The extraction process of the No. 2 piston includes arranging a rag together with two wooden blocks on the work surface followed by cylinder flange impact against block edges until the piston falls out while keeping a minimum (A) distance of 100 mm or 3.94 inches between rag top and block tops. Remove all parts using compressed air before inspecting the cylinder bore for rust or scoring while testing the cylinder for damage or wear before making necessary replacements or cleanups. The reassembly process requires lithium soap base glycol grease to be applied to rubber parts that bear arrows during the opposite ordering of disassembly steps.