What you'll need:
* New Clutch Fluid: Use DOT 3 or DOT 4 brake fluid. Never use anything else.
* Bleeding Kit: This usually includes a clear hose, a wrench (likely a 10mm or 11mm for the bleeder valve), and a container to catch the old fluid. A vacuum bleeder can significantly speed up the process and make it easier for one person.
* Wrench: To remove the bleeder valve if you don't have a complete kit.
* Helper: It's much easier with two people.
* Clean rags or paper towels: To clean up any spilled fluid.
* Gloves: Brake fluid is corrosive.
Procedure:
1. Locate the Bleeder Valve: This is usually located on the slave cylinder, which is bolted to the transmission bell housing. It's a small valve with a square or hexagonal head. You may need a flashlight and possibly even a mirror to find it easily depending on your Wrangler's configuration. Locate this *before* you start.
2. Open the Reservoir: Locate the master cylinder reservoir (usually near the brake master cylinder). Check the fluid level and top it off with fresh DOT 3 or DOT 4 brake fluid. Keep it topped off throughout the bleeding process.
3. Attach the Hose: If using a bleeding kit, attach one end of the clear hose to the bleeder valve and the other end to a container to catch the old fluid.
4. Prepare your Helper (If Applicable): If you have a helper, instruct them to slowly and firmly pump the clutch pedal several times. They should hold the pedal down after the final pump.
5. Open the Bleeder Valve: Carefully loosen the bleeder valve using the appropriate wrench. Do not remove it completely. You just want to crack it open slightly.
6. Observe the Fluid: You should see bubbles in the fluid and, possibly, some old, dark fluid coming out. If using a vacuum bleeder, follow the manufacturer's instructions and skip steps 4-7.
7. Close the Bleeder Valve: Once the flow of fluid clears and the bubbles are mostly gone, your helper should release the clutch pedal. Tighten the bleeder valve firmly.
8. Repeat: Repeat steps 4-7 until there are no more air bubbles in the fluid. You may need to repeat this several times. If you're working solo with a vacuum bleeder, you'll simply operate the vacuum to draw the fluid and air from the system until it is clear.
9. Check the Fluid Level: Top off the master cylinder reservoir with fresh brake fluid as needed.
10. Test the Clutch: Start the Jeep and test the clutch pedal. It should feel firm and engage smoothly. If the clutch pedal feels spongy or doesn't engage properly, repeat the bleeding process.
Important Considerations:
* Safety First: Brake fluid is corrosive. Wear gloves and eye protection. Be careful not to spill it on painted surfaces.
* Air Pockets: Air pockets can be stubborn. Make sure to completely bleed the system. If problems persist after several attempts, there might be a more significant issue, such as a leak in the line.
* Vacuum Bleeder: Consider using a vacuum bleeder; it makes this process much easier and faster, especially for those working alone.
* Gravity Bleeding: As a last resort, you can try gravity bleeding by simply cracking open the bleeder valve and letting the fluid drain slowly. This is the slowest method, but it works if you don't have a helper.
If you are uncomfortable performing this task yourself, it's best to take your Jeep to a qualified mechanic. A improperly bled clutch can lead to clutch failure or other transmission problems.
