Tools You'll Likely Need:
* Socket set (metric): Various sizes, including a deep socket for the tensioner bolt.
* Wrench set (metric): For various nuts and bolts.
* Ratchet and extensions: To reach tight spots.
* Torque wrench: Crucial for tightening bolts to the correct specification (consult your repair manual).
* Jack and jack stands: To safely lift the truck.
* Wheel chocks: For safety.
* New belt tensioner: Make sure you get the correct part number for your specific vehicle.
* New serpentine belt (recommended): Since you're already in there, replacing the belt is a good idea to avoid potential issues.
* Gloves and safety glasses: Always protect yourself.
* Repair manual: Highly recommended for specific torque specifications and detailed instructions.
Steps:
1. Preparation: Securely lift the truck using a jack and jack stands. Place wheel chocks on the wheels that remain on the ground. Disconnect the negative battery terminal.
2. Locate the Belt Tensioner: The belt tensioner is usually located on the passenger side of the engine, near the serpentine belt. It will have a pulley and a mechanism to adjust belt tension.
3. Access the Tensioner Bolt: You might need to remove some components to access the tensioner bolt. This could include air cleaner housing, etc. Consult your repair manual for specific instructions on accessing the bolt.
4. Release Belt Tension: Using the appropriate socket and ratchet, carefully turn the tensioner bolt (usually counter-clockwise) to release tension on the serpentine belt. This will allow you to remove the belt from the tensioner pulley and other pulleys. Be prepared for the belt to spring loose once tension is released.
5. Remove the Old Tensioner: Once the belt is off, remove the bolts securing the tensioner to the engine block. These bolts can be difficult to remove, so use penetrating oil if necessary and be patient.
6. Install the New Tensioner: Install the new tensioner, ensuring it's correctly aligned and seated. Tighten the mounting bolts to the manufacturer's specified torque. Again, consult your repair manual.
7. Install the New Serpentine Belt: Route the new serpentine belt around all the pulleys, following the correct path (consult your repair manual or diagram for the correct routing).
8. Check Belt Tension: After installing the belt, ensure proper tension. There should be a slight give in the belt when pressed.
9. Reassembly: Reinstall any components you removed to access the tensioner.
10. Reconnecting the Battery: Reconnect the negative battery terminal.
11. Testing: Start the engine and listen for any squealing or unusual noises from the belt. Check for belt slippage.
Important Notes:
* Torque Specifications: This is crucial! Incorrect torque can damage the tensioner or other components. Always consult your repair manual for the correct torque specifications.
* Repair Manual: A repair manual specific to your 1998 Dodge Ram 1500 5.9L 4WD is highly recommended. It will provide detailed diagrams, torque specifications, and step-by-step instructions.
* Professional Help: If you're not comfortable performing this repair yourself, it's best to take your truck to a qualified mechanic.
This is a general guide. The exact procedure may vary slightly depending on your specific vehicle. Always prioritize safety and consult your repair manual for the most accurate and detailed instructions.
