However, here's a general approach and things to consider:
1. Understanding the System:
* Belt Routing: Before you even touch the alternator, carefully trace the serpentine belt's path around *all* pulleys. Take a picture or diagram it. This is critical to avoid putting the belt on incorrectly. A wrong route can damage the belt and pulleys. A Chilton or Haynes repair manual for your specific year and engine is invaluable here.
* Tensioner: Most likely, your Lebaron has an automatic belt tensioner. This is a pulley on a spring-loaded mechanism. It's job is to tension the belt. You'll need to manipulate this tensioner to loosen the belt sufficiently to remove and replace the alternator.
* Mounting: The alternator is probably held in place by a bracket and possibly bolts.
2. Replacing the Alternator:
* Loosen the Tensioner: Consult your repair manual for the precise location of the tensioner and how to loosen it. Often, it involves a long bolt or a special tool. Loosening the tensioner will allow you to slip the belt off the alternator pulley.
* Remove the Old Alternator: Unbolt the alternator from its mounting bracket. Disconnect the electrical connections (positive and negative wires).
* Install the New Alternator: Mount the new alternator into its bracket and bolt it securely. Reconnect the electrical connections.
3. Aligning the Pulley and Installing the Belt:
* Visual Alignment: The alternator pulley *should* naturally align with the other pulleys when the alternator is correctly mounted. There should be minimal effort needed. However, if it appears misaligned, there's likely an issue with the alternator's mounting. Double-check your installation.
* Belt Tensioner: Use the tensioner to create enough slack in the belt to easily slip it onto the alternator pulley *and* all the other pulleys, following the belt routing you noted earlier.
* Tighten the Belt Tensioner: Once the belt is on all the pulleys, carefully tighten the tensioner bolt. The tension should be correct to prevent slippage. Many repair manuals specify a correct tension, often measured by the deflection of the belt between pulleys. You'll likely need a belt tension gauge or simply use a firm push in the middle of the longest run of belt between pulleys. It should deflect slightly. Over-tensioning can damage the belt and bearings.
4. Double-Check:
* Belt Routing: Verify once again that the belt is routed correctly around all pulleys.
* Rotation: Start the engine briefly (only long enough to check) to see if the belt is slipping. If it is, you'll need to adjust the tensioner.
Important Note: If you're uncomfortable working on your car's electrical or mechanical systems, take it to a qualified mechanic. Improper installation can lead to damaged components or even injury. A repair manual is strongly recommended for this job.
