Component Test- Brake Master Cylinder - Compensator Port
1. Inspect the master cylinder.
2. REFER to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
3. Apply and release the brakes.
4. With the brakes released, attempt to rotate each wheel and check for any brake drag.
If an excessive amount of brake drag exists at multiple wheels, continue to Step 5. If an excessive amount of brake drag exists at only one wheel, it indicates a possible seized brake caliper, brake wheel cylinder or parking brake component. Repair or install new components as necessary.
5. Check the brake stoplamp switch and the brake pedal free play to verify the brake pedal is not partially applied.
6. Loosen the brake master cylinder nuts and position the brake master cylinder away from the brake booster.
7. With the brakes released, attempt to rotate each wheel and check for any brake drag.
If the brake drag is no longer present, install a new brake booster. REFER to: Brake Booster - 2.3L EcoBoost (201kW/273PS) (206-07 Power Brake Actuation, Removal and Installation). REFER to: Brake Booster - 3.7L Duratec (227kW/301PS) (206-07 Power Brake Actuation, Removal and Installation). REFER to: Brake Booster - 5.0L 32V Ti-VCT/5.2L 32V Ti-VCT (206-07 Power Brake Actuation, Removal and Installation). If the brake drag is still present, install a new master cylinder. REFER to: Brake Master Cylinder (206-06 Hydraulic Brake Actuation, Removal and Installation).
Copyright © 2016 Ford Motor Company
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.