1. Introduction
This manual provides essential information for the proper use, installation, and maintenance of the Connect 31747 Common Rail Copper Injector Washers. These washers are designed for sealing common rail diesel injectors, ensuring a secure and leak-free connection within the fuel system. Adhering to these instructions will help ensure optimal performance and longevity of the product.

Image 1.1: A pack of 50 Connect 31747 Common Rail Copper Injector Washers. These washers are circular, made of copper, and are essential for sealing diesel injectors.
2. Setup and Installation
Proper installation of injector washers is critical for preventing fuel leaks and maintaining engine performance. Always ensure the engine is cool before beginning any work on the fuel system.
- Safety First: Disconnect the vehicle's battery and relieve any fuel system pressure before starting. Wear appropriate personal protective equipment, including gloves and eye protection.
- Cleanliness: Thoroughly clean the injector bore and the injector tip to remove any carbon deposits, old washer residue, or debris. A clean surface is essential for a proper seal.
- Washer Placement: Carefully place a new Connect 31747 copper injector washer onto the injector tip. Ensure it sits flat and is correctly oriented. Do not reuse old washers.
- Injector Reinstallation: Reinstall the injector into its bore, ensuring it seats correctly. Follow the vehicle manufacturer's torque specifications for tightening the injector retaining bolt or clamp. Overtightening or undertightening can lead to leaks or damage.
- System Check: After installation, reconnect the battery and prime the fuel system according to the vehicle manufacturer's instructions. Inspect for any fuel leaks before starting the engine.
3. Operating Considerations
Once installed, the Connect 31747 copper injector washers are designed to provide a reliable seal under normal operating conditions. No specific operational steps are required for the washers themselves, as their function is passive sealing.
- Engine Performance: A properly sealed injector system contributes to efficient fuel combustion and optimal engine performance.
- Regular Inspection: Periodically check around the injectors for any signs of fuel leakage or exhaust gas blow-by, which could indicate a compromised washer seal.
4. Maintenance
The Connect 31747 copper injector washers are consumable components and do not require maintenance themselves. Their primary maintenance consideration is replacement.
- Replacement Schedule: It is highly recommended to replace injector washers every time an injector is removed for service, inspection, or replacement. Copper washers deform to create a seal and are not designed for reuse.
- Storage: Store unused washers in a clean, dry environment to prevent contamination or damage.
5. Troubleshooting
Issues related to injector washers typically manifest as leaks or poor engine performance. This section outlines common problems and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fuel Leakage around Injector | Improperly seated washer, damaged washer, reused washer, incorrect torque. | Remove injector, clean bore, install new washer correctly, re-torque to specification. |
| Exhaust Gas Blow-by (soot around injector) | Washer not sealing combustion gases, often due to improper installation or damage. | Remove injector, clean bore and injector tip thoroughly, install new washer, ensure correct seating and torque. |
| Rough Engine Idle / Misfire | While not directly caused by the washer, a severe leak can affect fuel pressure and combustion. | Check for leaks as described above. If no leaks, investigate other fuel system or engine components. |
6. Specifications
Detailed specifications for the Connect 31747 Common Rail Copper Injector Washer.
| Attribute | Detail |
|---|---|
| Model Number | 31747 |
| Material | Copper |
| Outer Diameter | 14.6 mm |
| Inner Diameter | 7.5 mm |
| Thickness | 3.0 mm |
| Quantity per Pack | 50 pieces |
| Item Weight | 6 ounces (approx. for the pack) |
| Product Dimensions | 0.51 x 4.88 x 5.28 inches (packaging) |
| Manufacturer | The Tool Connection Ltd |
| GTIN | 05018341317478 |
7. Warranty Information
Connect products are manufactured to high standards. For specific warranty details regarding the Connect 31747 Common Rail Copper Injector Washers, please refer to the official Connect website or contact your point of purchase. Warranty typically covers manufacturing defects.
8. Support
For technical assistance, product inquiries, or support, please contact Connect customer service through their official website or the retailer from whom the product was purchased. When contacting support, please have the model number (31747) and any relevant purchase information available.





