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Home >> Cadillac >> 1988 >> Cimarron Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Bleeding >> Bleeding Master Cylinder

Bleeding Master Cylinder

NOTE: If master cylinder requires bleeding, it must be done with master cylinder installed on vehicle.
  1. Remove power brake reserve by applying brakes several times with the ignition off until all reserve is depleted. Ensure fluid level in master cylinder reservoir is adequate.
  2. Loosen front hydraulic line(s) on master cylinder and allow fluid to fill the master cylinder until it begins to flow from the front line connector port.
  3. Tighten front brake lines. Depress and hold the brake pedal slowly one time and hold. Loosen the front brake line connection at the master cylinder to purge air from the cylinder. Tighten the brake line and then slowly release the brake pedal.
  4. After waiting fifteen seconds, repeat the process, including the fifteen second wait, until all air is purged from the forward end of master cylinder. Repeat process for rear brake line connection(s).