1. Product Overview
The Flex-a-lite 1309 flex fan is engineered to optimize engine cooling by providing maximum airflow at lower engine revolutions per minute (RPM) and minimizing engine load at higher RPMs. This design contributes to reduced resistance during highway speeds, potentially improving horsepower and fuel efficiency. The fan blades are constructed from durable stainless steel.
An image showing the Flex-a-lite 1309 flex fan. It features a red star-shaped hub with five stainless steel blades attached. The blades are designed to flex at higher RPMs to reduce engine load.
2. Safety Information
Warning: The edges of the fan blades are sharp. Always wear appropriate protective gloves when handling or working near the flex fan to prevent injury.
This fan must be used in conjunction with a properly installed fan shroud to ensure safe and efficient operation.
3. Product Features
- Features a distinctive red star design for aesthetic appeal.
- Five-blade configuration with a 2-1/4 inch projected width.
- Designed for a maximum fan speed rating of 10,000 RPM.
- Contributes to low engine drag at high RPMs, enhancing overall performance.
4. Setup and Installation
Proper installation is critical for the performance and safety of your Flex-a-lite 1309 flex fan. Professional installation is recommended. If performing a DIY installation, careful attention to detail is required.
- Compatibility Verification: Do not rely solely on general vehicle fitment guides. Always measure your vehicle's fan shroud and available space to ensure the 19-3/8 inch fan diameter and 2-1/4 inch projected width will fit correctly. The manufacturer recommends a minimum of one inch clearance between the fan blades and the shroud.
- Fan Shroud Requirement: This fan must be used with a fan shroud. Ensure the shroud is correctly positioned and secured.
- Spacer and Bolt Considerations: If a fan spacer is required, ensure it is compatible with your application and the fan. Flex-a-lite recommends using their own brand spacers to maintain warranty validity. Note that bolt sizes may differ from stock components (e.g., 1/2 inch bolts instead of 3/8 inch).
- Installation Process: Installation can be challenging due to tight spaces. Consider removing the radiator if it provides better access, though this may involve draining fluids. When attaching the fan to the pulley, ensure all four bolts are aligned and started simultaneously, as spacer bolt holes may be slotted. A ratchet wrench can significantly aid in this process.
5. Operation
The Flex-a-lite 1309 flex fan is designed to operate efficiently across various engine speeds. At lower RPMs, the blades maintain a more rigid profile to pull maximum air through the radiator, enhancing cooling. As engine RPMs increase, the centrifugal force causes the stainless steel blades to flatten or 'flex' slightly. This flexing action reduces the fan's resistance to airflow, thereby decreasing the load on the engine and contributing to improved horsepower and fuel economy without compromising cooling performance.
6. Maintenance
Regular inspection of your Flex-a-lite 1309 flex fan is recommended to ensure continued optimal performance and safety.
- Periodically check the fan blades for any signs of damage, cracks, or excessive wear.
- Ensure all mounting bolts are secure and properly torqued.
- Keep the fan blades and shroud free from debris, dirt, and obstructions that could impede airflow or cause imbalance.
- Inspect the fan clutch (if applicable) and drive belt for proper tension and condition.
7. Troubleshooting
If you experience issues with your cooling system after installing the Flex-a-lite 1309 flex fan, consider the following:
- Overheating: If the engine is overheating, first verify that the fan is correctly installed and that there is adequate clearance between the blades and the shroud. Ensure the fan is pulling air in the correct direction (towards the engine). Check the thermostat for proper operation; a lower temperature thermostat (e.g., 160°F) may be beneficial in some applications.
- Incorrect Fitment: A common issue is incorrect fan size or insufficient clearance. Re-measure your shroud and fan dimensions carefully. Ensure the fan is not contacting any other engine components or the shroud itself.
- Vibration or Noise: Check for any loose mounting hardware or debris caught in the fan blades. An unbalanced fan can cause vibration; inspect blades for damage or bending.
- Reduced Performance: Ensure the fan belt is properly tensioned and not slipping. Verify that the fan clutch (if present) is functioning correctly.
For persistent issues, consult a qualified automotive technician.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | Flex-a-lite |
| Model Name | 1309 |
| Fan Diameter | 19-3/8 inches |
| Number of Blades | 5 |
| Blade Material | Stainless Steel |
| Projected Width | 2-1/4 inches |
| Maximum Fan Speed | 10,000 RPM |
| Item Weight | 4 Pounds |
| Manufacturer Part Number | 1309 |
| UPC | 088657013093 |
9. Warranty Information
The Flex-a-lite 1309 Red Star Stainless Steel Blade Flex Fan is covered by a one-year manufacturer warranty. Please retain your proof of purchase for warranty claims. The warranty typically covers defects in materials and workmanship under normal use. Misuse, improper installation, or unauthorized modifications may void the warranty.
10. Support
For further assistance, technical support, or to inquire about replacement parts, please visit the official Flex-a-lite website or contact their customer service department. Contact information can typically be found on the manufacturer's website or product packaging.
