Here's a general outline of the process. This is not a complete, step-by-step guide, and specific procedures may vary slightly depending on your truck's exact configuration. Always consult a repair manual specific to your 1999 Ford Ranger for detailed instructions and diagrams.
Tools You'll Need:
* New Brake Master Cylinder: Ensure you purchase the correct part number for your specific vehicle.
* Wrench Set: Various sizes will be needed.
* Socket Set: Including metric and possibly SAE sockets.
* Brake Bleeder Wrench: For bleeding the brakes afterward.
* New Brake Fluid: DOT 3 or DOT 4, as specified for your vehicle.
* Clean Rags or Shop Towels: Brake fluid is corrosive.
* Container to Catch Brake Fluid:
* Pliers (possibly)
* C-clamp or similar (possibly)
* A helper (recommended)
General Procedure:
1. Safety First: Disconnect the negative battery cable to prevent electrical shorts.
2. Fluid Drainage: Open the brake fluid reservoir cap. This will help to minimize air entering the system during the replacement.
3. Master Cylinder Removal:
* Disconnect the Brake Lines: Carefully loosen and remove the brake lines from the master cylinder. Have your helper plug the open lines immediately to prevent fluid loss and air entry. Use clean rags to catch any spilled fluid.
* Disconnect the Pushrod: Disconnect the pushrod from the master cylinder. This usually involves a retaining clip or bolt.
* Remove the Master Cylinder: The master cylinder is typically bolted to the booster. Carefully remove the bolts securing the master cylinder. You may need to maneuver it carefully to clear the booster.
4. Installation of the New Master Cylinder:
* Installation is the reverse of removal. Carefully align the new master cylinder with the booster and install the bolts. Tighten them securely to the manufacturer's specifications.
* Connect the Pushrod: Attach the pushrod to the new master cylinder.
* Connect the Brake Lines: Carefully reconnect the brake lines to the new master cylinder. Tighten them securely but carefully, avoiding over-tightening.
5. Bleeding the Brakes: This is critical to remove any air that entered the system during the replacement. Use a brake bleeder kit and follow the proper bleeding procedure for your vehicle (rear brakes first, then front). It's essential to keep the master cylinder reservoir full of brake fluid during bleeding. Refer to your repair manual for the correct bleeding order.
6. Check Fluid Level: Once bleeding is complete, check and top off the brake fluid in the reservoir.
7. Test the Brakes: Carefully test the brakes in a safe, open area, like a large empty parking lot. If the brakes feel spongy or unresponsive, you may have air in the lines and will need to bleed them again.
8. Reconnect Battery Cable: Once you are satisfied with brake function, reconnect the negative battery cable.
Important Considerations:
* Repair Manual: A repair manual specific to your 1999 Ford Ranger is invaluable. It will provide detailed diagrams, torque specifications, and procedural information.
* Bleeding: Properly bleeding the brakes is crucial. If done incorrectly, it can lead to brake failure.
* Fluid Type: Use the correct type of brake fluid (DOT 3 or DOT 4) specified for your vehicle.
* Safety: Work in a well-ventilated area, wear safety glasses, and be careful to avoid getting brake fluid on your skin or clothing.
This information is for guidance only. Consult a repair manual and seek professional assistance if you are unsure about any part of this process. Incorrect brake repair can be extremely dangerous.
