1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Remy 23737 Premium Remanufactured Alternator. Please read this manual thoroughly before installation and retain it for future reference. Proper installation and maintenance are crucial for optimal performance and longevity of the unit.
2. Product Overview
The Remy 23737 is a premium remanufactured alternator designed to meet or exceed original equipment specifications, ensuring reliable power generation for your vehicle's electrical system.
Key Features:
- Highest battery charging available
- Quality components for longer life
- 100% tested for reliable performance
What's in the Box:
- One (1) Remy 23737 Premium Remanufactured Alternator

Figure 2.1: Front-side view of the Remy 23737 Alternator, showing the pulley and cooling fins.
3. Safety Information
WARNING:
- Always disconnect the vehicle's battery before working on the electrical system to prevent electrical shock or damage to components.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Ensure the vehicle is securely supported on jack stands if working underneath.
- Consult a professional automotive technician if you are unsure about any installation steps.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65 warning). Handle with care and wash hands after handling.
4. Setup and Installation
Installation of an alternator requires mechanical knowledge and specific tools. It is highly recommended that installation be performed by a qualified automotive technician.
General Installation Steps (Consult Vehicle Service Manual for Specifics):
- Preparation: Disconnect the negative battery terminal. Locate the existing alternator.
- Removal: Disconnect all electrical connections from the old alternator. Loosen the tensioner and remove the serpentine belt. Unbolt the old alternator from its mounting brackets and carefully remove it from the engine bay.
- Comparison: Compare the new Remy 23737 alternator with the old unit to ensure they are identical in mounting points and electrical connections.
- Installation: Position the new alternator into the mounting brackets. Securely fasten all mounting bolts to the manufacturer's specified torque.
- Belt Installation: Reinstall the serpentine belt and adjust the tensioner to the correct specification.
- Electrical Connections: Reconnect all electrical wiring to the new alternator, ensuring secure and clean connections.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and check for proper charging system operation (e.g., battery light off, voltage reading).

Figure 4.1: Top-down view of the Remy 23737 Alternator, highlighting the pulley and mounting points.

Figure 4.2: Rear view of the Remy 23737 Alternator, showing the electrical connection terminals.
5. Operating Principles
The alternator is a key component of your vehicle's charging system. Its primary function is to generate electrical power to operate the vehicle's electrical components (lights, radio, ignition, etc.) and to recharge the battery while the engine is running. It converts mechanical energy from the engine (via the serpentine belt) into electrical energy.
A properly functioning alternator will maintain a stable voltage output, typically between 13.5 and 14.8 volts, ensuring the battery remains charged and electrical systems receive adequate power.
6. Maintenance
The Remy 23737 Alternator is designed for long-term reliability with minimal maintenance. However, periodic checks of related components can help ensure its optimal performance:
- Serpentine Belt: Inspect the serpentine belt for cracks, fraying, or excessive wear. Ensure it is properly tensioned. A loose or worn belt can lead to insufficient charging.
- Battery Terminals: Check battery terminals for corrosion and ensure they are clean and tight. Poor battery connections can affect charging.
- Wiring: Periodically inspect the alternator's electrical connections for looseness or corrosion.
7. Troubleshooting
If you experience issues with your vehicle's charging system, consider the following common troubleshooting steps. If problems persist, consult a qualified automotive technician.
| Symptom | Possible Cause | Solution |
|---|---|---|
| Battery Warning Light On | Alternator not charging, loose belt, faulty wiring, dead battery. | Check belt tension, inspect wiring, test battery and alternator output. |
| Dim Headlights / Interior Lights | Low voltage output from alternator, weak battery. | Test alternator output and battery condition. |
| Engine Stalling / Difficulty Starting | Insufficient power to ignition system, discharged battery due to charging issue. | Check charging system components, including alternator and battery. |
| Whining or Grinding Noise | Worn alternator bearings, loose or worn serpentine belt. | Inspect alternator for mechanical issues, check belt condition and tension. |
8. Specifications
| Attribute | Detail |
|---|---|
| Brand | Remy |
| Model Number | 23737 |
| Item Weight | 12.5 pounds |
| Product Dimensions | 7.9 x 6.94 x 6.53 inches |
| Exterior Finish | Machined |
| Manufacturer Part Number | 23737 |
| ASIN | B000E7BFYO |
| Date First Available | December 19, 2005 |
9. Warranty and Support
For specific warranty information regarding your Remy 23737 Premium Remanufactured Alternator, please refer to the documentation provided at the time of purchase or contact the seller directly. Warranty terms can vary based on the retailer and the remanufacturing process.
For technical support or further assistance, please contact the manufacturer, Remy, or your authorized dealer.





