Brake Master Cylinder: Service and Repair

Brake Master Cylinder





NOTE: Manual transmission shown, automatic transmission similar.









Removal and Installation

WARNING: Do not use any fluid other than clean brake fluid meeting manufacturer's specification. Additionally, do not use brake fluid that has been previously drained. Following these instructions will help prevent system contamination, brake component damage and the risk of serious personal injury.

WARNING: Carefully read cautionary information on product label. For EMERGENCY MEDICAL INFORMATION seek medical advice. In the USA or Canada on Ford/Motorcraft products call: 1-800-959-3673. For additional information, consult the product Material Safety Data Sheet (MSDS) if available. Failure to follow these instructions may result in serious personal injury.

NOTICE: Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.

1. Disconnect the vacuum tube from the brake booster.

2. Detach the vacuum tube from the cowl and position aside.

3. Remove the battery tray.

4. Remove the 2 brake fluid reservoir nuts.
- To install, tighten to 7 Nm (62 lb-in).


5. Disconnect the brake fluid reservoir tube from the master cylinder.

6. If equipped with a manual transmission, disconnect the brake master cylinder-to-clutch master cylinder tube from the master cylinder.

7. Disconnect the brake fluid level switch electrical connector.

8. Disconnect the primary and secondary brake tubes from the master cylinder.
- To install, tighten to 17 Nm (150 lb-in).


9. Remove and discard the 2 brake master cylinder nuts.
- To install, tighten the new brake master cylinder nuts to 20 Nm (177 lb-in).


10. Remove the brake master cylinder and discard the brake booster-to-master cylinder O-ring.

11. NOTE: Before installing the master cylinder make sure a new brake booster-to-master cylinder O-ring is in place and the mating faces are clean.
To install, reverse the removal procedure.


12. Bleed the master cylinder. For additional information, refer to Component Bleeding in Brakes and Traction Control.

13. If equipped with a manual transmission, bleed the hydraulic clutch system.