Here's a general approach; however, consult your Jeep Cherokee repair manual for precise details and diagrams specific to your engine:
1. Locate the Tensioner: The serpentine belt tensioner is usually a pulley with a spring-loaded arm. It's located somewhere along the serpentine belt's path. Look for a pulley that has some sort of mechanism (bolt, lever, etc.) to adjust its position. This is typically near the crankshaft pulley.
2. Identify the Tensioner Adjustment Mechanism: This is crucial. Some tensioners use a long bolt that you turn with a wrench or socket to move the pulley. Others may use a lever that you can push or pull with a pry bar or special tool. Again, your repair manual will show you exactly what your tensioner looks like and how it's adjusted.
3. Use the Correct Tool: Use the correct size wrench or socket (for a bolt-type tensioner) or a pry bar (for a lever-type tensioner) appropriately sized and designed to avoid damaging the tensioner or pulley. A specific Jeep Cherokee serpentine belt tensioner tool may be available from auto parts stores.
4. Loosen the Tension: With the engine OFF, carefully apply pressure to the tensioner mechanism in the direction that *increases* the distance between the tensioner pulley and the engine block. This will release the tension on the belt. You may need to use some force.
5. Remove or Adjust the Belt: Once the tension is released, you should be able to easily remove or adjust the serpentine belt as needed.
6. Reinstall (if applicable) and Re-tension: Once you've installed a new belt or adjusted the old one, release the tensioner to allow the belt to seat properly around all the pulleys. You'll likely need to slightly increase the belt tension to achieve the proper tightness. Many mechanics will listen to the belt as a way to determine tightness – it should not squeak or make a whining sound, indicating a correct tension.
Safety Precautions:
* Disconnect the negative battery terminal before starting any work on your vehicle's electrical system.
* Use safety glasses or goggles to protect your eyes from flying debris.
* Support the vehicle properly if working from underneath.
* Do not over-tighten the belt. This can cause premature wear and tear, or damage to components.
* If you're unsure about any step, consult a qualified mechanic. Incorrect tension can lead to belt failure and potentially more serious damage.
Remember to consult your Jeep Cherokee repair manual for precise instructions and diagrams. This information is a general guideline and may not be completely accurate for your specific vehicle. Improper procedure can lead to damage or injury.
