Here's a general outline of the procedure. Specific steps and tools may vary slightly depending on your Wrangler's trim level and any modifications. Always consult a repair manual specific to your year and model for detailed instructions and diagrams.
Tools You'll Likely Need:
* Wheel chocks: Essential for safety.
* Jack and jack stands: Securely lift and support the vehicle.
* Lug wrench: To remove the wheel.
* Socket wrench set: Various sizes, including metric.
* Wrench set: Open-ended and possibly box-end wrenches.
* Brake caliper compression tool: To compress the piston(s) in the caliper. A C-clamp can sometimes work, but a proper tool is preferred.
* Wheel cylinder installer/remover tool: Makes the job significantly easier. A large C-clamp can be a substitute but is more challenging.
* New wheel cylinders: Get the correct ones for your vehicle.
* Brake fluid: DOT 3 or DOT 4, as specified in your owner's manual.
* New brake lines (if needed): Inspect closely for damage before starting.
* Clean rags or shop towels: Keep things clean to avoid contamination.
* Gloves: Protect your hands.
* Safety glasses: Protect your eyes.
* Torque wrench: For tightening bolts to the correct specification.
* Bleeder wrench: To bleed the brakes.
Procedure (General Steps):
1. Safety First: Engage the parking brake, chock the front wheels, and securely lift the vehicle using a jack and jack stands. Never work under a vehicle supported only by a jack.
2. Remove the Wheel: Remove the lug nuts and the wheel.
3. Disconnect Brake Line: Carefully disconnect the brake line from the wheel cylinder. Have a rag ready to catch any spilled brake fluid. This is crucial to minimize fluid loss and air entering the system.
4. Compress Caliper Piston: Use the caliper compression tool to compress the caliper piston(s). This creates space for the wheel cylinder to be removed.
5. Remove the Wheel Cylinder: Use the wheel cylinder installer/remover tool to carefully remove the old wheel cylinder. If you don't have the tool, it can be done with careful leverage, but it's much riskier.
6. Clean Everything: Thoroughly clean the area around the wheel cylinder mounting location, removing any debris or rust.
7. Install the New Wheel Cylinder: Using the installer/remover tool (or carefully by hand), install the new wheel cylinder. Ensure it's properly seated.
8. Reconnect Brake Line: Carefully reconnect the brake line to the new wheel cylinder.
9. Reinstall the Wheel: Reinstall the wheel and tighten the lug nuts to the proper torque specification (consult your repair manual).
10. Bleed the Brakes: This is absolutely critical. You need to bleed the brakes to remove any air that entered the system during the repair. Use a bleeder wrench and a helper to pump the brake pedal while you open and close the bleeder valve on the caliper. Bleed each wheel, starting with the furthest from the master cylinder.
11. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
12. Test the Brakes: Before driving, test the brakes thoroughly to ensure they are functioning properly. If the pedal feels soft or spongy, you may have air in the system and need to bleed the brakes again.
Important Considerations:
* Brake Fluid is Corrosive: Be careful not to get brake fluid on your paint or skin.
* Air in the System: Air in the brake lines is extremely dangerous. Proper bleeding is essential.
* Repair Manual: A repair manual specific to your 1997 Jeep Wrangler is invaluable. It will provide detailed diagrams and torque specifications.
This is a simplified overview. Consult a reputable repair manual for detailed instructions specific to your vehicle. If you're not comfortable performing this repair yourself, take your Jeep to a qualified mechanic. Brake failure is extremely dangerous.
