Here's a general guide. Always consult your vehicle's repair manual for specific torque specifications and procedures. This is a generalized guide and may vary slightly depending on your specific model and trim level.
Tools You'll Need:
* Jack and jack stands: Crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Lug wrench: To remove the wheel.
* Socket wrench set: With various sizes, including metric.
* C-clamp or brake caliper compressor: To compress the caliper piston.
* Hammer (optional): May be needed to help separate parts.
* Wrench or socket to remove caliper mounting bolts.
* Torque wrench: To tighten bolts to the correct specification.
* Rotor removal tool (optional): Can make rotor removal easier.
* Brake cleaner: To clean surfaces before reassembly.
* New brake rotors and brake pads (if needed): Always replace pads if they're worn or nearing the end of their life.
* Gloves and safety glasses: Protect yourself.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the wheels. Raise the vehicle using the jack and securely place it on jack stands.
2. Remove the Wheel: Use the lug wrench to remove the lug nuts and take off the wheel.
3. Remove the Caliper:
* Locate the caliper bolts holding the caliper to the knuckle.
* Use the appropriate wrench to carefully remove these bolts.
* Some calipers have a slide pin; remove these pins as well. They may be difficult and could require penetrating oil.
* Carefully remove the caliper from the rotor. You might need to gently pry it away if it's sticking. Support the caliper with a wire or bungee cord to prevent it from hanging by the brake line.
4. Compress the Caliper Piston: Use a C-clamp or caliper compressor to push the piston back into the caliper. This is necessary to create enough space for the new, thicker rotor. Turn the piston slowly and steadily to avoid damaging the seals. If you don't have a special tool, a large C-clamp and a block of wood can work, but be careful not to damage the piston or the caliper's seals.
5. Remove the Rotor: Some rotors simply slide off. Others might require a bit more effort. A rotor removal tool can be helpful if the rotor is stuck. If necessary, gently tap the rotor with a hammer to loosen it. Avoid damaging the wheel studs or the hub.
6. Install the New Rotor: Carefully slide the new rotor onto the wheel studs. Ensure it's properly seated.
7. Reinstall the Caliper: Carefully reinstall the caliper onto the new rotor, ensuring it's correctly aligned. Replace the caliper bolts and tighten them to the manufacturer's specified torque.
8. Reinstall the Wheel: Replace the wheel and tighten the lug nuts in a star pattern to evenly distribute the clamping force. Torque the lug nuts to the manufacturer's specification.
9. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
10. Pump the Brakes: After reinstalling the wheel, firmly pump the brake pedal several times to engage the new pads with the rotors. Check for leaks.
11. Test Drive: Take a short test drive to ensure the brakes are functioning correctly.
Important Considerations:
* Brake Pad Wear: Inspect your brake pads. If they are worn, replace them at the same time. This is crucial for safety and optimal braking performance.
* Torque Specifications: Always refer to your repair manual for the correct torque specifications for all bolts and nuts. Over-tightening or under-tightening can lead to damage.
* Lubrication: Lightly lubricate caliper slide pins with appropriate lubricant (brake caliper grease) as needed. Avoid using anything that can contaminate the brake pads.
This guide provides a general overview. Always consult your vehicle's repair manual for detailed instructions and torque specifications specific to your 1997 Jeep Grand Cherokee Laredo. If you're unsure about any step, seek professional help. Brake safety is paramount.
