The BY612630090004 is a genuine Shacman High-Pressure Pipe Adapter, a vital interface component within your truck’s common-rail diesel fuel injection system. This precision-engineered fitting serves as a critical connection point, enabling the secure and leak-free attachment of high-pressure fuel lines to the fuel rail, injection pump, or injectors. Designed to withstand continuous pressures exceeding 2,000 bar, the integrity of adapter BY612630090004 is non-negotiable for system safety and performance.
A fault in this adapter can result in catastrophic fuel leaks, immediate loss of engine power, and severe safety risks. Manufactured from high-strength alloy steel to exact OEM specifications, the Shacman BY612630090004 guarantees perfect dimensional accuracy, correct thread engagement, and a reliable metal-to-metal seal. Choosing this genuine part is a direct investment in preventing costly downtime and ensuring the operational integrity of your engine’s most critical system.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | BY612630090004 | Genuine Shacman Identification |
| Product Name | High-Pressure Pipe Adapter | Connection Fitting / Union Adapter |
| Brand | Shacman | Original Equipment Manufacturer |
| Primary Material | High-Strength Alloy Steel | Heat-treated for durability |
| Pressure Rating | Ultra-High Pressure (UHP) | Suitable for common-rail systems (>1800 bar) |
| Sealing Mechanism | Conical Seat (Metal-to-Metal) | Ensures leak-proof seal at high pressure |
| Thread Standards | Metric (e.g., M14x1.5 to M12x1.5) | Allows connection between different components |
| Function | Interface & Connection | Adapts between fuel line, rail, pump, or injector |
| SEO Description | Genuine Shacman High-Pressure Pipe Adapter BY612630090004. OEM fitting for secure, leak-free connections in common-rail fuel systems. Ensures safety and performance. | |
The High-Pressure Pipe Adapter BY612630090004 acts as a universal translator within the complex language of a common-rail fuel system. Its primary function is to provide a secure, standardized connection point between components that may have different port sizes or thread types.
For example, it may connect a fuel line with one thread size to an injector inlet with another, or serve as an intermediate fitting on the fuel rail itself. It ensures that high-pressure fuel can flow seamlessly between system components without any loss of pressure or integrity.
Without correctly specified adapters like the BY612630090004, modular fuel system design and service would be incredibly difficult. They allow for the assembly of systems from standardized high-pressure lines and specialized components, simplifying manufacturing, repair, and part replacement.
Precision Thread Engineering: The threads on the BY612630090004 are machined to exacting ISO/metric standards with precise pitch and tolerance. This guarantees smooth, cross-thread-free engagement with mating components, which is critical for achieving the proper clamp load for sealing.
Dual or Multi-Port Configuration: This adapter typically features different thread specifications on each end (e.g., male on one end, female on the other, or different diameters). The genuine part ensures these specifications perfectly match the OEM design of the connected parts.
Optimized Internal Flow Path: The internal bore of the adapter is designed to minimize flow restriction and turbulence. Sudden changes in diameter or sharp edges can cause pressure drops and cavitation, which the OEM design avoids to maintain system efficiency.
Rugged Construction for Vibration Resistance: Made from high-grade steel and engineered with sufficient wall thickness, the adapter can withstand the constant vibration of a heavy-duty diesel engine without fatigue cracking, a common failure point in inferior fittings.
1. System Depressurization and Cleanliness: Always follow the correct procedure to relieve residual high-pressure fuel before disassembly. The adapter’s threads and sealing cones must be absolutely clean. Contamination is the leading cause of seal failure and injector damage.
2. Use of Correct Thread Engagement: Start all threads by hand. Forcing the adapter indicates misalignment. Ensure it threads smoothly for several turns before applying any tool. This is the best check for correct thread match and absence of cross-threading.
3. Adherence to Specified Torque Values: This is not a standard plumbing fitting. Using a calibrated torque wrench is mandatory. Tighten the BY612630090004 to the exact Newton-meter (Nm) specification provided by Shacman. This precise force creates the necessary deformation for a metal-to-metal seal without over-stressing the components.
4. Prohibition of Supplemental Sealants: Never apply pipe tape, thread-locking compound, or liquid sealant to the threads or sealing faces of a high-pressure adapter. These can shred, contaminate the fuel system, and interfere with the proper sealing mechanics of the conical seat.
The adapter uses a precision-machined conical sealing surface (often a 74-degree or similar angle). When torqued into the mating component’s conical seat, the metal surfaces deform slightly, creating a permanent, pressure-tight seal along a continuous ring of contact. This happens independently of the threads, which only provide clamping force.
A failing adapter is a severe hazard. The most immediate sign is a high-pressure fuel leak, which can manifest as a fine mist, a steady drip, or a powerful spray. Diesel fuel at 2,000+ bar can penetrate skin and instantly vaporize, posing extreme fire and safety risks.
Operationally, a leak causes a rapid drop in rail pressure. The engine will lose power, run roughly, stall, or fail to start. The ECU will store fault codes related to low rail pressure (e.g., P0087). Any suspicion of a high-pressure leak demands immediate engine shutdown and professional inspection.
The margin for error in high-pressure fittings is zero. Non-genuine adapters may have incorrect thread forms, substandard metal hardness, or imprecise cone angles. These flaws can lead to threads stripping under torque, the adapter cracking under pressure, or a failure to seal properly from the start.
The genuine BY612630090004 is produced with certified materials, undergoes rigorous machining quality checks, and is often batch-tested for burst pressure performance. It is a certified safety component, not just a simple piece of metal. For liability, safety, and reliability, there is no alternative to the OEM part.
The BY612630090004 adapter may be used in several key locations: at the inlet of a fuel injector, where the high-pressure line connects; on the fuel rail itself, serving as a outlet port; or at the high-pressure pump outlet. It may also be used in test ports for diagnostic equipment.
Its role is always the same: to provide a flawless, sealed transition. During repairs, identifying the exact location and specification of each adapter is crucial for reassembly. Mixing them up or using incorrect ones will result in leaks or component damage.
During any fuel system service, visually inspect every adapter like the BY612630090004. Look for signs of external corrosion, fuel staining (indicating a past micro-leak), or damage to the threads or sealing cone. Check for tightness with a torque wrench set to the correct value.
A best practice is to replace high-pressure adapters whenever the component they are seated in (injector, rail) is replaced. The sealing surfaces are designed for one optimal deformation cycle. Reusing an old adapter on a new component can compromise the seal’s integrity.
Shacman’s OEM adapters are made from specific chromium-molybdenum or similar alloys. These are chosen for their high tensile strength, good fatigue resistance, and suitability for surface hardening treatments. The final product often has a corrosion-resistant plating like zinc-nickel.
Quality control involves dimensional verification with coordinate measuring machines (CMM), surface finish analysis, and material hardness testing. Random samples from production batches are typically subjected to destructive burst pressure tests far exceeding the rated operating pressure to validate safety margins.
The Shacman High-Pressure Pipe Adapter (OEM: BY612630090004) is much more than a simple connector. It is a precision-machined, safety-critical interface that ensures the sealed integrity of the entire high-pressure fuel circuit under the most extreme conditions.
Compromising on this component compromises the entire system’s safety and function. For guaranteed compatibility, material integrity, and performance that meets the original engineering standards, the genuine BY612630090004 is an essential choice for every repair and maintenance procedure.
