Brake Master Cylinder: Testing and Inspection
INSPECTIONIf any damage, deformation, wear, swelling, rust, and other faults are found on the primary piston assembly, secondary piston assembly, supply the valve stopper, or gasket, replace the faulty part.
Note:
^ The primary and secondary pistons must be replaced as complete assemblies.
^ The service limit of clearance between each piston and the master cylinder inner dia. is 0.11 mm (0.0043 inch).