Tools You'll Need:
* New serpentine belt: Make absolutely sure you get the correct belt size. Your owner's manual or a parts store will have this information.
* Wrench(es): You'll likely need various sizes, depending on the tensioner and any other pulleys you might need to work with. A socket set with extensions and a ratchet will be very helpful.
* Socket wrench with extension and universal joint: This is crucial for reaching some of the bolts.
* Jack and jack stands: Safely lifting the vehicle is essential. Never work under a vehicle supported only by a jack.
* Wheel chocks: To secure the vehicle.
* Gloves: To protect your hands.
* Pliers (optional): Might be needed to help maneuver the belt.
* Shop towels or rags: To clean up any grease or oil.
* Pen or marker: To mark the belt routing if you're unsure.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle using a jack and secure it safely on jack stands. Remember, working under a vehicle supported only by a jack is extremely dangerous.
2. Locate the Belt Tensioner: On the LT1 engine, you'll find a serpentine belt tensioner. It's usually a pulley with a lever or arm that you can use to release tension on the belt.
3. Release Belt Tension: This is the most crucial step. The method varies slightly depending on the specific design of the tensioner. Consult your repair manual, but typically you will:
* Locate the tensioner bolt: This bolt is usually on the side of the tensioner.
* Use a wrench (or socket) to slightly loosen this bolt (but do not remove it completely).
* Use a wrench (or socket) on the tensioner pulley to move it, thereby relieving tension on the serpentine belt. You may need to use a breaker bar for stubborn tensioners.
4. Remove the Old Belt: Once the tension is released, carefully slip the old belt off the pulleys. It may help to pry it loose in a few spots.
5. Inspect Pulleys and Tensioner: While you have the belt off, carefully inspect all pulleys for cracks, damage or excessive wear. Inspect the tensioner as well, for proper functioning.
6. Install the New Belt: Route the new belt onto the pulleys, following the same path as the old belt. If you're unsure, make a diagram or take a picture of the old belt's path before removing it. Routing is critical; getting it wrong can damage the engine.
7. Re-engage the Tensioner: Carefully tighten the tensioner bolt that you previously loosened, keeping enough tension on the belt to prevent slipping. Make sure the belt is seated correctly on all the pulleys before you fully tighten the bolt.
8. Check Belt Tension: Once the tensioner is fully tightened, check the belt tension by pressing on it between pulleys; It should have a slight give, but shouldn't be too loose or too tight. Your repair manual will have specific instructions on proper tension.
9. Lower the Vehicle: Carefully lower the vehicle back to the ground.
10. Start the Engine: Start the engine and carefully check for any unusual noises or belt slippage. Check the belt for proper alignment and tension again.
Important Considerations:
* Consult a repair manual: A factory service manual specific to your 1996 Buick Roadmaster with the LT1 engine is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle.
* Safety: Always prioritize safety. Use proper jack stands, wear gloves, and be careful when working around moving parts.
* Professional Help: If you're not comfortable performing this repair yourself, consider taking your vehicle to a qualified mechanic.
This guide provides general steps. The specific details may vary slightly depending on your vehicle's configuration. Improper installation can lead to serious engine damage. If you are unsure about any step, consult a professional mechanic.
