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Discover the engineered core of the valvetrain with the BY612630050013 Rocker Arm Support Assembly, a critical OEM component for SHACMAN diesel engines. This robust assembly serves as the foundational mounting point and pivot for the rocker arms, directly translating camshaft lift into precise valve actuation. For mechanics and fleet managers sourcing reliable Shacman truck parts, understanding this component is key to maintaining engine timing, compression, and power output.
The genuine BY612630050013 is manufactured to exact tolerances, ensuring perfect alignment of rocker arms over the valve stems and pushrods. Its integrity is paramount for preventing valvetrain instability, excessive wear, and potential engine damage. Investing in this authentic assembly guarantees the synchronization and longevity vital for the demanding cycles of heavy-duty SHACMAN trucks.
Rocker Arm Support Assembly
Опора коромысла в сборе
High-Strength Cast Iron Construction: The BY612630050013 assembly is precision-cast from high-grade iron, offering exceptional rigidity and damping properties to withstand continuous valvetrain forces and engine vibrations without flexing.
Precision-Machined Bearing Surfaces: Features accurately machined bores and mounting surfaces for the rocker arm shafts, ensuring smooth rotation, minimal friction, and optimal oil lubrication flow to critical wear points.
Integrated Oil Passage Design: Engineered with internal oil galleries that reliably deliver pressurized engine oil to the rocker arm bushings and shafts, preventing dry operation and ensuring long-term wear resistance.
Stable Multi-Point Mounting: Designed with multiple reinforced bolt holes for secure, even attachment to the cylinder head, providing a stable platform that maintains valvetrain geometry under high RPM and load.
The table below details the technical specifications for the BY612630050013 Rocker Arm Support Assembly. This data is crucial for verifying compatibility and ensuring correct valvetrain setup.
| Parameter | Value / Description |
|---|---|
| OEM Part Number | BY612630050013 |
| Product Name | Rocker Arm Support Assembly |
| Brand | SHACMAN |
| Primary Material | High-Strength Gray Cast Iron |
| Surface Treatment | Anti-Corrosion Coating / Black Oxide |
| Rocker Shaft Bore Diameter | Application Specific (e.g., 25mm) |
| Number of Support Points | Typically 4 or 5 per cylinder bank |
| Mounting Bolt Size | M10 or M12 (Model Specific) |
| Oil Passage Diameter | Precision drilled to match cylinder head gallery |
| Compatible Engine Series | SHACMAN WP10, WP12, and other inline-6 diesel engines |
Always verify BY612630050013 compatibility with your specific engine model using your Vehicle Identification Number (VIN) or official SHACMAN technical documentation.
The BY612630050013 Rocker Arm Support Assembly is a cornerstone of the overhead valve train in SHACMAN diesel engines. It is bolted directly onto the cylinder head.
This assembly holds the rocker arm shafts in perfect alignment parallel to the camshaft. Each rocker arm pivots on this supported shaft.
The primary function of the BY612630050013 is to provide a rigid, unwavering foundation for the rocker arms. It ensures the accurate transfer of motion from the pushrods to the valves.
Without a stable support assembly, valve timing and lift can become inconsistent. This leads to power loss, poor fuel economy, and increased emissions.
The integrated oil passages in the BY612630050013 are critical. They feed oil to the rocker arm bushings, reducing friction and heat at this high-movement junction.
For any engine rebuild or cylinder head service, inspecting or replacing the rocker arm support assembly, like part number BY612630050013, is a best practice for restoring like-new valvetrain performance.
1. Ensure the cylinder head surface is clean, flat, and free of old gasket material. Clean out all bolt holes.
2. Confirm the new BY612630050013 assembly is clean and its oil passages are clear of any debris or blockage.
3. Carefully position the assembly onto the cylinder head, aligning the mounting holes and the oil gallery feed hole with the head.
4. Install the mounting bolts with a light coat of appropriate thread sealant or oil as specified. Hand-tighten initially.
5. Tighten the bolts in the sequence and to the torque specified in the SHACMAN service manual, usually in a crisscross pattern from the center outward.
6. Once the BY612630050013 is secured, install the rocker arms, shafts, and related components according to the engine manual.
7. Prime the engine oil system before starting to ensure immediate lubrication flows to the new assembly.
• During valve lash adjustments, inspect the BY612630050013 for any cracks, especially around the mounting points and oil passages.
• Check for signs of oil leakage from the interface between the support assembly and the cylinder head, which could indicate a worn seal or uneven surface.
• Listen for excessive valvetrain noise that could suggest wear in the rocker shaft bores of the support assembly.
• Ensure the mounting bolts for the BY612630050013 remain at the correct torque, as vibration can loosen them over time.
• When performing major engine work, use a straightedge to check the mounting surface of the assembly for warpage.
• Regular oil changes with recommended oil are crucial to keep the internal oil passages of the BY612630050013 clean and functioning.
Proper torque sequence is non-negotiable. An unevenly tightened BY612630050013 can warp, leading to misalignment, binding rocker arms, and rapid wear of the entire valvetrain.
Choosing the genuine BY612630050013 assembly guarantees the material integrity and dimensional precision required for a high-stress valvetrain. SHACMAN engineers this part for specific load and thermal dynamics.
Aftermarket supports may use inferior casting processes, leading to porosity (tiny holes) that can become cracks under stress. Their oil passages might not align perfectly, causing lubrication failure.
The genuine BY612630050013 undergoes machining and quality checks that ensure each bore is perfectly aligned and sized. This guarantees smooth rocker shaft operation and even oil distribution.
Using the authentic part preserves the engineered harmony of the valvetrain. It protects your investment by maintaining performance and supporting any remaining engine warranty coverage.
Rebuild specialists note that the genuine BY612630050013 Rocker Arm Support Assembly consistently fits perfectly onto the cylinder head without need for modification. This saves valuable shop time.
Fleet technicians report that engines rebuilt with OEM components like the BY612630050013 demonstrate more stable valve lash settings over extended periods. This indicates superior wear characteristics.
The precision of the oil holes in the authentic BY612630050013 is frequently highlighted. It ensures immediate oil flow to the rockers upon startup, a critical factor for component longevity.
Operators in high-mileage applications have observed that using genuine support assemblies contributes to consistent engine power and fuel efficiency over the long haul, proving its durability.
A properly functioning BY612630050013 contributes to clean engine operation. By ensuring precise valve timing, it helps maintain optimal combustion efficiency, reducing harmful exhaust emissions.
Its durability means fewer replacements over the engine’s life, reducing the material waste associated with manufacturing and disposing of inferior, short-lived parts.
From a safety standpoint, a catastrophic failure of a rocker support assembly can lead to severe internal engine damage. Pieces could break loose, causing a total engine seizure.
Using the reliable, genuine BY612630050013 mitigates this risk, promoting vehicle reliability and preventing potential roadside breakdowns in unsafe conditions.
Each BY612630050013 Rocker Arm Support Assembly is produced under strict quality protocols. Processes include material analysis, pressure testing of oil galleries, and coordinate measuring machine (CMM) verification of critical dimensions.
As an official SHACMAN component, the BY612630050013 is backed by the manufacturer’s warranty, providing assurance against material or workmanship defects.
Purchasing from authorized distributors ensures you receive a part with this full warranty protection. It also guarantees that you are getting a genuine component, not a look-alike counterfeit.
This assurance is invaluable for professional workshops and fleet managers who cannot afford the liability and comeback of a part failure.
The initial cost of the genuine BY612630050013 is offset by its role in preventing far more expensive repairs. A failed support can destroy rocker arms, pushrods, valves, and even the piston and cylinder head.
Its precise fit eliminates hours of diagnostic time and labor associated with troubleshooting mysterious valvetrain noises or irregular wear patterns caused by a poorly made component.
Standardizing on the OEM BY612630050013 assembly across a fleet ensures predictable repair outcomes and simplifies technical training for mechanics.
Ultimately, this component is a strategic investment in engine longevity and total cost of ownership, minimizing unplanned downtime and maximizing vehicle availability.
The BY612630050013 assembly is engineered for specific SHACMAN engine families. Fitment is determined by engine model, displacement, and production year.
Variations in the number of cylinders, valve configuration, and cylinder head design mean that a support assembly for one engine will not fit another, even if they look similar.
Always confirm fitment using the exact OEM number BY612630050013 and cross-reference it with your engine’s serial number or VIN through official channels.
Correct fitment is not just about bolts lining up; it ensures the oil supply aligns and the rocker arm geometry is perfect for proper valve operation. Never compromise on this critical component.
The BY612630050013 Rocker Arm Support Assembly is the unsung hero of your SHACMAN engine’s valvetrain, providing the stable foundation essential for power and efficiency.
Choosing the genuine BY612630050013 is a direct investment in engine harmony, durability, and reliable performance mile after mile.
For your next engine overhaul or cylinder head service, insist on the authentic SHACMAN BY612630050013. Ensure your valvetrain operates with precision, protect your engine from catastrophic damage, and drive with the confidence of OEM quality.
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