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Master Cylinder: Disassembly

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  1. Remove master cylinder. See MASTER CYLINDER & RESERVOIR  under REMOVAL & INSTALLATION.
  2. Clean outside of master cylinder. Remove filler cap and diaphragm. Drain any remaining fluid from cylinder.
  3. Remove the brake pressure switch, if equipped. See Fig 1.
  4. Press the primary piston and remove the snap ring. See Fig 2. Remove and discard the primary piston assembly.
  5. Plug the rear outlet port and, if necessary, plug the brake pressure switch port. Apply compressed air into the front outlet port and remove the secondary piston assembly and discard. See Fig 3.
Fig 1: Identifying Brake Pressure Switch (Typical)
G00299465Courtesy of FORD MOTOR CO.
Fig 2: Identifying Primary Piston Assembly & Snap Ring
G00299467Courtesy of FORD MOTOR CO.
Fig 3: Identifying Master Cylinder Ports
G00299468Courtesy of FORD MOTOR CO.
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