Master Cylinder/Booster Assembly: Installation

2001 Mercury Sable LS, 4D Sedan, 3.0 U, AX4SSECTION Installation
  1. Install NEW "O" ring into groove in master cylinder. Ensure "O" ring is seated properly. Position master cylinder onto mounting studs. Tighten mounting nuts to specification. Reverse removal procedure to complete installation.
  2. Tighten fittings to specification. See TORQUE SPECIFICATIONSΒ  . Fill reservoir with DOT 3 brake fluid. Bleed brake system using procedure specified. See BLEEDING BRAKE SYSTEMΒ  . Operate brake several times. Check for leaks.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.