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 valve stopper, or gasket, replace the faulty part.
CAUTION:
^ The primary and secondary pistons must be replaced as complete assemblies.
^ The service limit of the clearance between each piston and the master cylinder inner dia. is 0.11 mm (0.0043 inch).
^ When handling parts, be extremely careful not to damage or scratch the parts, or let any foreign matter get on them.