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293-4071 Fuel Injector for Cater-pillar C9 Diesel D6r Bull Dozer 2934071
| MOQ: | 1 pieces |
| Price: | US $248.32-268.32 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 293-4071 |
| Type | Fuel Injector |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This specification of electro-hydraulic unit fuel injection valve (standard part number: 293-4071 / 2934071, common cross-reference and interchangeable identification numbers include 10R-8238, 10R8238, 387-9428, 3879428, 236-0962, etc.) is precision-manufactured for heavy-duty construction machinery, construction equipment, and industrial diesel power platforms (such as the C9 series 8.8L diesel engine, equipped in 330D and 336D tracked excavators, 966H and 972H wheel loaders, and 14M graders, etc.). As the core actuator of the HEUI electro-hydraulic unit injection system, it is responsible for accurately metering high-pressure diesel fuel and rapidly atomizing it into ultra-fine atomized particles within microseconds, ensuring thorough mixing of fuel and intake airflow for efficient and complete combustion and powerful power output.
The product adheres to the manufacturing standards of "high-pressure particle refinement and millisecond-fast response." The core needle valve assembly and armature control valve core are made from carefully selected aerospace-grade quenched special alloy steel, combined with ultra-high precision geometric grinding and low-friction polishing. The surface is covered with a high-density, anti-coking hardened coating, effectively preventing early erosion caused by diesel impurities. After replacement and installation, equipment operators and on-site maintenance personnel will experience a significant performance improvement: crisp and rapid start-up, with severe vibrations at low idle speeds subsiding and becoming smoother; under heavy-load tunneling, steep slope climbing, or high-intensity continuous operation conditions, the control handle and pedal feedback are firm and smooth, acceleration is rapid and powerful, while significantly reducing black smoke from exhaust, resulting in a satisfactory overall fuel consumption control experience.
Advantages: Precision manufacturing throughout the entire process at our self-operated modern production base.
Problems Solved: Traditional OEM and multi-level procurement models involve complex processes that easily lead to excessive tolerances in component fit, uneven fuel supply to cylinders, and high-pressure leaks, while significantly increasing procurement costs.
Value Gained: Utilizing a self-built standardized production plant for precision manufacturing throughout the entire process eliminates intermediaries and their markups, ensuring consistent injection height across all cylinders. This reduces maintenance costs and provides a robust and reliable power guarantee for long-term equipment operation.
Advantages: 100% fully simulated digital dynamic test bench for rigorous quality inspection.
Problems Solved: Addresses common issues in low-end components such as injection atomization deviation, incomplete combustion due to sluggish solenoid valve response, engine misfires, idling vibrations, and wasted time and additional costs associated with secondary disassembly and adjustment.
Value Gained: Each nozzle unit undergoes fully automated digital testing before leaving the factory. Under fully simulated high-temperature and ultra-high-pressure conditions, the injection volume and return oil sealing are precisely calibrated across different pressure ranges, ensuring immediate usability upon installation and significantly reducing time and costs associated with equipment disassembly and adjustment.
Advantages: Sufficient stock of readily available inventory for rapid delivery.
Problems Solved: For high-upload productivity tools like construction machinery and commercial vehicles, breakdowns due to fuel system malfunctions can lead to costly delays, compensation claims, and lost work time.
Value Brought: Our warehousing center maintains a large inventory of best-selling specifications year-round. Orders are processed quickly, with priority packing and shipping within 24-48 hours, significantly shortening logistics cycles and helping fleets and owners quickly restore equipment availability, effectively mitigating downtime losses.
Advantages: Special quenched alloys and corrosion-resistant hardened coatings.
Problems Solved: Addressing the issue of premature wear and valve core seizure caused by variations in diesel lubricity and sulfur content in different regions.
Value Brought: Core valve components utilize high-strength special bearing steel and a surface corrosion-resistant hardening treatment, significantly improving fatigue resistance and wear resistance. This ensures stable performance even in harsh environments and under prolonged high-load operation, avoiding the additional costs of frequent repairs.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | Heavy-Duty Engineering Machinery Electro-Hydraulic Unit Injector (HEUI Injector) |
| Standard OE Part Number | 293-4071 |
| Interchangeable Part Numbers | 2934071 / 10R-8238 / 10R8238 / 387-9428 / 3879428 |
| Applicable Engine Platform | C9 Series 8.8L Diesel Engine |
| Fuel Supply System | HEUI Electro-Hydraulic Unit Injection System |
| Core Needle Valve Material | Aerospace-grade quenched bearing steel, corrosion-resistant high-hardness special alloy |
| Surface Treatment Process | High-density, ultra-wear-resistant DLC hardened coating |
| Nozzle Machining Technology | EDM high-precision electrical discharge micro-hole machining |
| Operating Temperature Range | -40°C to +125°C |
| Internal Sealing Components | Original Equipment Manufacturer (OEM) High-Temperature Resistant and Anti-Swelling Special Fluororubber (FKM O-Rings) |
| Net Weight per Unit | Approx. 1.15 kg / piece |
| Factory Testing Standards | 100% Automated Full-Condition Bench Flow and Sealing Tests |
Mining and Heavy Excavation Operations: Large tracked excavators continuously excavate and load large rocks in harsh, high-dust, and high-load environments, requiring extremely high stability in fuel supply and explosive power. When operators notice a decrease in digging force, severe idling vibration, or black smoke from the exhaust pipe, maintenance personnel should promptly replace the fuel injector with this high-precision model. After replacement, fuel injection atomization is extremely uniform, and the hydraulic system's power output is restored to ample and stable levels, ensuring efficient progress in mining operations.
Continuous Working Conditions in Road Infrastructure and Gradement: Graders and bulldozers require engines to maintain stable low-speed, high-torque output for extended periods during road infrastructure operations. When equipment experiences starting difficulties, sluggish acceleration, or abnormally high fuel consumption, the maintenance team will replace the entire fuel supply system. Precise electronic injection control restores smooth engine operation, significantly improving fuel efficiency and acceleration response, avoiding downtime costs.
Q: Can I use the product directly after installation? Is a correction code required?
A: Each injector has a unique flow correction code (IMA code) generated during factory testing. It is recommended to use a diagnostic tool to flash the correction code into the engine ECU after installation to achieve optimal fuel efficiency and smoothness.
Q: What is the inventory and delivery time for bulk purchases?
A: We have our own factory and large warehouse, and maintain a large inventory of this model year-round. Standard orders can be packaged and shipped within 24-48 hours, and large-volume orders can also be quickly scheduled for production line setup.
Q: How do you guarantee the quality and performance of your products before they leave the factory?
A: All injectors undergo assembly in a Class 100 cleanroom and 100% full-condition bench testing, covering key indicators such as sealing, pre-injection volume, full-load injection volume, and return oil volume. These stringent testing standards ensure that they are high-quality products from the outset.
Q: How long is the warranty period? What about after-sales service?
A: We offer a 12-month warranty period. If a performance failure occurs within the warranty period due to non-human factors, we provide rapid replacement or after-sales technical support to ensure your peace of mind when using our products.
