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Master Cylinder: Reassembly

  1. Use clean DOT 3 motor vehicle brake fluid to lubricate the new piston assembly seals.
  2. Carefully install the secondary piston assembly. See Fig 1.
  3. Carefully install the primary piston assembly. See Fig 2.
  4. Press the primary piston. Install the snap ring. See Figure.
  5. Install the brake pressure switch, if equipped.
  6. Bleed (prime) master cylinder. See MASTER CYLINDER PRIMING (BENCH)  under COMPONENT BLEEDING. Install the brake master cylinder into vehicle. Bleed brake system as necessary. See BLEEDING BRAKE SYSTEM .
Fig 1: Installing Secondary Piston Assembly
G00299469Courtesy of FORD MOTOR CO.
Fig 2: Installing Primary Piston Assembly
G00299470Courtesy of FORD MOTOR CO.
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