Here's a general overview. Specific details might vary slightly depending on your Ranger's trim level and options. Always consult a repair manual specific to your vehicle year and model for the most accurate instructions and torque specifications.
Tools You'll Need:
* Jack and jack stands
* Lug wrench
* Wheel chocks
* Socket wrench set (metric)
* Wrenches (metric)
* C-clamp or caliper compressor tool (highly recommended)
* Brake cleaner
* Wire brush
* Pliers
* Screwdrivers (possibly Phillips and flathead)
* New brake pads
* New rotors (likely needed, especially if the pads are worn down)
* Anti-seize lubricant
* Torque wrench (essential for proper tightening)
* Penetrating oil (like PB Blaster)
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the rear wheels. Raise the front of the truck securely using the jack and place it on jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Remove the Caliper:
* Locate the caliper mounting bolts. These are usually on the back of the caliper.
* Use the appropriate wrench to loosen and remove the bolts.
* Carefully remove the caliper. It may be helpful to support the caliper with a bungee cord or wire to keep it from hanging by the brake line. Do not let the brake line hang.
4. Remove the Brake Pads: The old brake pads should slide out of their slots in the caliper. If they're stuck, gently pry them out.
5. Inspect and Replace the Rotors: Inspect the rotors for scoring, grooves, or excessive wear. If they're damaged, replace them. If you're reusing the rotors, clean them thoroughly with a wire brush and brake cleaner.
6. Install New Brake Pads: Install the new brake pads into the caliper. Make sure they slide in easily and are seated correctly.
7. Compress the Caliper Piston: This is crucial. The piston needs to be compressed to make room for the new, thicker brake pads. Use a C-clamp or a caliper compression tool to slowly and carefully push the piston back into the caliper. You may need to open the bleeder valve slightly to relieve pressure as you compress the piston. Be careful not to damage the piston seal.
8. Reinstall the Caliper: Carefully slide the caliper back over the rotor and brake pads. Tighten the caliper mounting bolts to the manufacturer's specified torque.
9. Repeat Steps 3-8 for the other side.
10. Reinstall the Wheel: Put the wheel back on and tighten the lug nuts in a star pattern (opposite nuts first).
11. Lower the Vehicle: Carefully lower the truck from the jack stands. Tighten the lug nuts fully.
12. Pump the Brakes: Get back in your vehicle, pump the brake pedal several times to ensure the system is re-pressurized.
13. Bleed the Brakes (Optional but Recommended): While not strictly necessary for a simple pad replacement, bleeding the brakes helps remove any air that may have gotten into the system during the process. This ensures proper brake performance. There are many tutorials online showing how to bleed brakes properly.
Important Considerations:
* Rotors: Worn brake pads often mean worn rotors. Always inspect your rotors carefully. If they're scored or excessively worn, they should be replaced. Attempting to use worn rotors with new pads will severely reduce braking performance and could be dangerous.
* Torque Specifications: Always use a torque wrench and tighten bolts to the manufacturer's specified torque. Incorrect tightening can damage components.
* Brake Fluid: If you are bleeding the brakes, you will need fresh brake fluid.
* Professional Help: If you are uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Brake repair is critical for safety.
This is a simplified guide. Refer to a repair manual for your specific vehicle model for detailed instructions, diagrams, and torque specifications. Improper brake repair can be dangerous. If in doubt, consult a professional.
