- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
Introduce the high-performance BY612630050005 Valve Spring, a critical component that defines the rhythm and reliability of the valve train in SHACMAN diesel engines. This genuine OEM part is engineered to deliver consistent, precise force, ensuring the timely closing of engine valves after each actuation. As a trusted supplier of Shacman truck parts, we recognize that valve spring integrity is non-negotiable for engine performance. The BY612630050005 is manufactured to exact SHACMAN specifications, providing the perfect balance of spring rate, installed height, and fatigue resistance. Its function is to maintain constant contact between valve train components, prevent valve float at high RPM, and ensure proper valve seating.
For technicians and fleet managers, understanding the role of the BY612630050005 valve spring is essential for maintaining engine power, preventing catastrophic valve train failure, and ensuring the longevity of the entire engine in the most demanding heavy-duty cycles.
Valve Spring
High-Carbon Chrome-Silicon Alloy Steel: The BY612630050005 spring is wound from premium chrome-silicon (SAE 9254) or similar high-carbon valve spring wire, offering superior fatigue strength, heat resistance, and consistent elasticity over millions of cycles.
Precision-Coiled for Consistent Spring Rate: Manufactured with exact coil pitch, wire diameter, and number of active coils to deliver a specific, calibrated spring rate. This ensures the correct force is applied to close the valve under all engine operating conditions.
Shot-Peened Surface for Enhanced Fatigue Life: The spring surface undergoes a shot-peening process, which induces compressive stresses. This dramatically increases resistance to crack initiation and propagation, extending the service life of the BY612630050005.
Heat-Resistant Protective Coating: Often treated with a specialized coating, such as a proprietary finish or oxide layer, to protect against corrosion, reduce friction between coils, and maintain performance in the high-temperature engine environment.
The table below details the technical specifications for the BY612630050005 Valve Spring. This data is essential for verifying compatibility and ensuring correct engine assembly.
| Parameter | Value / Description |
|---|---|
| OEM Part Number | BY612630050005 |
| Product Name | Valve Spring |
| Brand | SHACMAN |
| Spring Wire Material | Chrome-Silicon Alloy Steel (SAE 9254 or equivalent) |
| Wire Diameter (Approx.) | 4.0 mm (Varies by application) |
| Outer Diameter (Approx.) | 35 mm (Varies by application) |
| Free Length (Approx.) | 55 mm (Varies by application) |
| Installed Height (Approx.) | 45 mm (With specified installed pressure) |
| Spring Rate (Approx.) | 50 N/mm (Application-specific design) |
| Surface Treatment | Shot Peened + Anti-Corrosion Coating |
| Compatible SHACMAN Engine Models | Designed for specific SHACMAN engine families, including those in F3000, X3000, and M3000 series trucks. |
Always confirm the compatibility of BY612630050005 with your specific engine using the Vehicle Identification Number (VIN) or official SHACMAN technical documentation.
The BY612630050005 valve spring performs a deceptively simple yet vital function. It is responsible for closing the engine’s intake and exhaust valves after they have been opened by the camshaft lobe via the tappet and pushrod or rocker arm.
This closing action must be swift and positive to ensure the valve seals completely on its seat. A proper seal is necessary to contain cylinder compression and the combustion event.
The spring must also maintain sufficient tension to keep all valve train components in contact at high engine speeds. If spring force is insufficient, “valve float” occurs.
Valve float means the valve fails to follow the camshaft profile, leading to loss of power, erratic engine operation, and potential collision between the valve and piston. The BY612630050005 is designed to prevent this.
Furthermore, the spring must absorb the energy of the closing valve and dampen vibrations within the valve train. This reduces noise and wear on other components.
The performance of the BY612630050005 directly impacts engine RPM limit, valve timing accuracy, and overall valvetrain stability. It is a key factor in achieving reliable high-performance operation.
1. Ensure the cylinder head is securely mounted on a clean workbench. Identify the correct location for each valve spring.
2. Inspect the valve spring seat and retainer for wear, cracks, or debris. Clean these components thoroughly before installation.
3. Using a proper valve spring compressor tool, compress the old spring (if present) and remove the keepers, retainer, and old spring.
4. Place the new BY612630050005 valve spring onto the valve stem, ensuring it sits squarely in the spring pocket or on the installed shim.
5. Install the retainer and compress the spring just enough to install the valve keepers (locks). Ensure both keepers are fully seated in the valve stem groove.
6. Slowly release the compressor, ensuring the keepers remain in place. The spring should exert even pressure.
7. After installing all springs, double-check that every keeper is secure. Measure the installed height of each spring to verify it meets specifications.
• Valve springs like the BY612630050005 should be inspected during every major engine overhaul or cylinder head service.
• Check each spring for any visible cracks, especially at the ends of the coils. Look for signs of corrosion or overheating (blue discoloration).
• Measure the free length of each spring and compare it to the specification. A shortened spring indicates fatigue and loss of tension.
• Check the spring for squareness by rolling it on a flat surface. Excessive wobble indicates deformation.
• Always replace valve springs in complete sets per cylinder or per engine. Mixing old and new springs leads to uneven valve train forces.
• Keep a service record noting valve spring replacement. This helps predict future maintenance needs for the valve train.
Proper installation with the correct tools is crucial to avoid damaging the spring or causing keeper failure. Never over-compress a valve spring beyond what is necessary.
Choosing the genuine BY612630050005 valve spring guarantees material quality and engineering precision that matches the original engine design. The specific alloy and heat treatment are optimized for the stress and thermal cycles of a SHACMAN engine.
Aftermarket springs may use inferior wire or inconsistent heat treatment, leading to variable spring rates, premature sagging (loss of tension), or sudden fracture under fatigue.
The genuine BY612630050005 undergoes rigorous quality control, including load testing to verify spring rate, fatigue testing, and dimensional checks. This ensures consistent performance across all cylinders.
It is designed to work in harmony with the specific camshaft profile, valve weights, and engine RPM range of your SHACMAN truck. This balance is critical for preventing valve float and ensuring valvetrain stability.
Using the authentic component helps maintain engine warranty coverage and provides the peace of mind that comes with a part designed for the long-term durability required in heavy-duty applications.
Experienced engine builders report that genuine BY612630050005 springs have consistent free length and pressure, making valve height setting predictable and accurate during assembly.
Fleet maintenance records indicate that engines rebuilt with OEM valve train components, including the BY612630050005 spring set, maintain stable valve lash and exhibit fewer valve train-related issues over extended mileage.
This reliability contributes to consistent engine performance and reduces the likelihood of unexpected breakdowns. Operators and technicians note a quiet, smooth-running valve train after installation of genuine springs.
The durability of the BY612630050005 in high-RPM, high-temperature environments is trusted. Its resistance to heat-induced tension loss (sag) is a key factor in its long service life.
Professional machine shops and rebuilders standardize on genuine SHACMAN springs to ensure the quality and longevity of their work, building trust with their customers.
The BY612630050005 valve spring plays an indirect but significant role in engine efficiency and emissions. By ensuring positive valve closure, it maintains cylinder compression.
High compression is essential for efficient combustion, which directly translates to better fuel economy and power output. A leaking valve due to weak spring force wastes energy.
Preventing valve float allows the engine to operate safely at its designed RPM range, ensuring optimal power delivery. It also protects against catastrophic engine damage from valve-to-piston contact.
A stable valve train with reliable springs like the BY612630050005 contributes to smoother engine operation and reduced mechanical noise, enhancing the overall driving experience.
By extending the service life of the entire valve train, this component reduces waste and the environmental impact associated with frequent repairs and part replacements.
Each BY612630050005 valve spring is produced under a certified quality management system. The manufacturing process includes controlled wire drawing, coiling, heat treatment, and shot peening.
As an authentic SHACMAN component, the BY612630050005 is covered by the manufacturer’s warranty against defects in material and workmanship. This assures customers of its reliability and performance.
Purchasing from authorized distributors guarantees you receive a genuine part with full traceability. It also ensures access to accurate technical specifications for installation and torque values.
Counterfeit springs often fail to meet material and fatigue standards. A broken valve spring can lead to dropped valves, severe piston damage, and complete engine failure.
Protect your engine investment by always verifying the part number and sourcing the genuine BY612630050005 Valve Spring for all maintenance and overhaul work.
The initial cost of a set of genuine BY612630050005 valve springs is minimal compared to the potential cost of engine damage caused by spring failure. It is a preventative investment in engine health.
By maintaining correct valve timing and seating, these springs help preserve optimal fuel efficiency throughout the engine’s life. Even a small drop in compression can increase fuel consumption.
Their durability means they are likely to last the entire interval between planned major overhauls, providing consistent performance without the need for interim replacement.
Using genuine springs during a rebuild protects the investment in other new valve train components, such as valves, guides, and camshafts, by ensuring balanced and stable operation.
Overall, the BY612630050005 represents excellent value by safeguarding against catastrophic failure, maintaining performance, and reducing total cost of ownership through reliability.
The BY612630050005 is engineered for specific SHACMAN engine models, cylinder head designs, and camshaft profiles. Fitment is precise and not universal.
Using the exact OEM number BY612630050005 is critical. Valve springs vary in wire diameter, coil count, free length, spring rate, and installed pressure.
Always verify compatibility using your truck’s Vehicle Identification Number (VIN) or by consulting the official SHACMAN parts catalog and engine service manual for your specific model and year.
Installing springs with incorrect specifications can lead to poor engine performance, valve float, excessive wear, or spring breakage. Never assume a spring is compatible based on appearance alone.
Correct fitment of the BY612630050005 ensures the valve train operates within its designed parameters for safety, performance, and longevity.
The BY612630050005 Valve Spring is a fundamental component for achieving precise and reliable valve train operation in your SHACMAN engine. Its role in controlling valve motion is essential for power, efficiency, and engine safety.
Choosing the genuine BY612630050005 is an investment in engineering precision, material durability, and long-term operational peace of mind. Trust SHACMAN’s OEM quality to deliver the performance your heavy-duty application demands.
For your next engine rebuild or valve train service, specify the authentic BY612630050005 Valve Spring. Ensure positive valve control, protect your engine from catastrophic damage, and drive with confidence knowing your valve train’s heartbeat is strong and steady.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
A PROFESSIONAL CHINA TRUCK AND SPARE PARTS SUPPLIER
@Copyright DERUNA
