What you'll need:
* Brake fluid: Use DOT 3 or DOT 4 brake fluid, NOT power steering fluid. Brake fluid is corrosive, so wear gloves and eye protection. Have extra on hand.
* Clear tubing: A length of about 3 feet of clear plastic tubing, with an inside diameter that fits snugly over the bleeder valve.
* Wrench: The correct size wrench for your bleeder valve (usually 8mm or 10mm).
* Container: A container to catch the old brake fluid. A jar or small bottle works well.
* Helper: Someone to pump the clutch pedal.
Steps:
1. Locate the Bleeder Valve: The clutch bleeder valve is located on the slave cylinder, which is usually bolted to the transmission bell housing. It's a small valve with a square or hexagonal head. You might need a flashlight and possibly some maneuvering to find it.
2. Prepare: Fill the master cylinder reservoir with fresh brake fluid. Keep the reservoir topped off throughout the bleeding process. This is crucial to avoid introducing air into the system.
3. Attach the Tubing: Attach one end of the clear tubing to the bleeder valve. The other end should be submerged in the container.
4. Open the Bleeder Valve: Have your helper slowly and steadily pump the clutch pedal several times. While they're doing this, slightly crack open the bleeder valve with your wrench. You should see brake fluid flowing through the tubing with some air bubbles initially.
5. Close the Bleeder Valve: Once the fluid flowing through the tube is clear and free of bubbles, have your helper hold the clutch pedal down. Tighten the bleeder valve.
6. Repeat: Repeat steps 4 and 5 several times until no more air bubbles appear in the fluid.
7. Check Fluid Level: Make sure the master cylinder reservoir is still full and top off if necessary.
8. Test: Have your helper start the engine and slowly push the clutch pedal all the way to the floor and let it slowly come up. If the clutch pedal feels spongy, repeat the bleeding process. If the clutch pedal is firm and engages properly, then you're finished. If the problem persists, there might be a more serious issue with your clutch system.
Important Considerations:
* Air in the system: Air in the hydraulic clutch system will cause a spongy clutch pedal and make it hard or impossible to shift gears.
* Low fluid: Never let the master cylinder reservoir run low on fluid, as this will introduce air into the system.
* Master Cylinder: If the problem persists after multiple bleeding attempts, the master cylinder might be faulty and need replacing.
* Slave Cylinder: A leaking or faulty slave cylinder can also cause clutch problems.
This is a general guide. Consult your Jeep Wrangler's repair manual for specific details and diagrams relating to your model year. If you're uncomfortable performing this task yourself, it's always best to consult a qualified mechanic.
