Master Cylinder: Disassembly
WARNING: This page does not describe the selected car, but rather 92 other vehicles, including the 2002 BMW Z3, 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW Z3, and 2001 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.
Push in primary piston and remove plug. See Fig 1. Remove retaining ring from end of cylinder. Remove primary and secondary piston assemblies and stopper washer. Disassemble piston assemblies, noting number and position of parts used for reassembly reference. See Fig 1.
NOTE:
Replace master cylinder if cylinder bore is scored.