Master Cylinder: Removal
- Release vacuum from power brake booster by pumping brake pedal several times with engine off until brake pedal becomes firm. Clean area around master cylinder filler tube and master cylinder fluid reservoir.
- Remove master cylinder filler tube from master cylinder fluid reservoir by pushing filler tube downward and rotating filler tube. Remove filler cap from master cylinder filler tube and install on master cylinder.
- Disconnect electrical connector at brake fluid level sensor located on master cylinder fluid reservoir. Place shop towel under master cylinder to absorb brake fluid.
- Disconnect brakelines from master cylinder. Install plugs at brakeline outlets on master cylinder. Clean master cylinder-to-power brake booster area to prevent dirt particles from falling into power brake booster. Remove master cylinder-to-power brake booster nuts, and slide master cylinder from power brake booster.
- Remove master cylinder-to-power brake booster vacuum seal from groove on mounting flange of master cylinder by pulling vacuum seal from master cylinder. DO NOT pry vacuum seal from master cylinder.
CAUTION:
Master cylinder is used to create a seal for holding vacuum in power brake booster. Vacuum in power brake booster must be released before removing master cylinder. Ensure area around master cylinder filler tube, master cylinder fluid reservoir and master cylinder-to-power brake booster are clean before servicing master cylinder. Area may be cleaned with brake parts cleaner.