3512B Diesel Engine Parts Fuel Injector 386~1767 392-0208 2OR-1276 386-1760 for C-AT C-aterpillar Construction Machinery
3512B Diesel Engine Parts Fuel Injector 386~1767 392-0208 2OR-1276 386-1760 for C-AT C-aterpillar Construction Machinery
Table 1 Basic Information
| Item | Details |
| Part Number | 2OR-1276 |
| Applicable Engine | C-aterpillar 3512B Series |
| Product Name | Diesel Fuel Injector Assembly |
| Type | Electronic Unit Injector (MEUI) |
| Operating Voltage | 24V DC |
| Net Weight | Approx. 1.6 kg |
| Packaging | Individual Packaging |
| Warranty | 6 Months |
Table 2 Technical Specifications
| Parameter | Specification |
| Injection Pressure | 150–200 MPa (Rated: 180 MPa) |
| Number of Nozzle Holes | 8 |
| Spray Cone Angle | 15°±2° |
| Atomization Particle Size | ≤55 μm |
| Fuel Delivery Deviation | ＜±2% |
| Solenoid Resistance (20℃) | 13–16 Ω |
| Response Time | ＜0.5 ms |
| Return Flow (Rated Condition) | ≤16 mL/min |
| Service Life | ≥10000 Hours |
Table 3 Construction & Material Details
| Component | Material / Process |
| Injector Body | High-strength Cr-Mo Alloy Steel |
| Needle & Nozzle Assembly | Hard Alloy (Laser Honing) |
| Solenoid Coil | Class H Insulated Copper Wire |
| Sealing Components | FKM O-rings + Copper Gaskets |
| Nozzle Holes | Laser Drilling + Internal Polishing |
| Internal Oil Passages | Precision Grinding & Deburring |
| Electrical Connector | Gold-plated Contacts |
| Return Spring | Alloy Spring Steel |
Table 4 Installation & Maintenance Guidelines
| Item | Standard Requirement |
| Installation Torque | 55–65 N·m |
| Copper Gasket Replacement | Replace at each disassembly |
| Leakage Test Standard | 1750 bar hold for 1 min, ≤1 drop leakage |
| Cleaning Method | Ultrasonic cleaning with special detergent |
| Nozzle Carbon Limit | ＜0.1 mg residue per hole |
| Calibration Interval | Every 2000 hours or on fault |
| Fault Replacement Criterion | Return flow >30 mL/min or poor atomization |
| Recommended Tools | CAT ET Diagnostic Tool, 337-3822 Test Bench |
Why Choose Us:
1)Great sales and after-sales Services - The principle of customer always comes first. To help you—our dear customer to save costs, we are committed to offer you high quality engine parts with the most competitive price. After sales, we are willing to provide technical support and glad to hear any feedback from you. It is your kind opinion that make us get more and more improvement.
2) Perfect after-sales service, if you encounter problems in the process of selling and using the product, you can contact us at any time;
3) Strong support from professional sales/engineer/technican team,shipment and after-service department.
4) Our company can provide more professional consulting services! Our company has technical personnel dedicated to customer service to provide
Detailed Product Picture:
mpany Information:
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.