Engine Intake/Exhaust Valve-6754-41-4100

Product Advantages

1. OEM Standard High-precision Matching Produced in strict accordance with Komatsu SAA6D107E engine's original factory drawings and micron-level tolerance standards, the valve stem diameter, seat face angle, overall length and matching size are perfectly consistent with original parts. It achieves a precise fit with the valve seat, valve guide and valve train without secondary processing, ensuring the accurate opening and closing timing of the valve.

2. High-quality Heat-resistant Alloy Material Adopts high-purity heat-resistant alloy steel and nickel-based alloy raw materials, with excellent high-temperature mechanical properties, fatigue resistance and corrosion resistance; the material composition is optimized for the working characteristics of intake and exhaust valves, which is far superior to ordinary valve materials in service life and performance.

3. Advanced Surface Treatment & Forming Process The intake valve stem is treated with high-temperature nitriding to improve surface hardness and wear resistance; the exhaust valve head is coated with high-density ceramic anti-scouring coating, and the seat face is processed by precision grinding and lapping, with a surface finish of Ra≤0.2μm, ensuring perfect sealing and scouring resistance.

4. Strong Adaptability to Harsh Working Conditions Passed professional performance tests such as high-temperature endurance, high-pressure impact, fatigue vibration and wear resistance. It can work stably in the harsh working environment of heavy-duty engineering machinery such as engine high load, long continuous operation, frequent start-stop and poor fuel quality, fully meeting the operation requirements of SAA6D107E engine.

5. Long Service Life & High ReliabilityThe product performance is close to Komatsu original genuine parts, the high-temperature fatigue life is increased by more than 50% compared with ordinary valves, and the wear rate is reduced by more than 40%. It effectively extends the service life of the valve mechanism, reduces the frequency of engine disassembly and maintenance, lowers the downtime loss of engineering machinery, and cuts the overall operation and maintenance cost.

Installation & Maintenance Tips

1. Clean the valve, valve seat, valve guide and valve spring installation position before installation, remove oil stains, carbon deposits, rust and burrs; use a valve lapping tool to lap the valve seat face and valve seat to ensure perfect sealing if necessary.

2. Install the valve in the correct position (intake/exhaust distinction) and direction, apply a thin and uniform layer of high-temperature lubricating grease on the valve stem, and insert it into the valve guide smoothly to avoid scratching the valve stem and valve guide.

3. Assemble the valve spring, spring seat, lock pin and other accessories in strict accordance with the engine assembly process, ensure the valve spring is installed in place and the lock pin is locked reliably to prevent the valve from falling off during engine operation.

4. Check the valve clearance after assembly and adjust it according to the specified value in the SAA6D107E engine manual (cold machine/hot machine different standards), ensure the clearance is accurate to avoid abnormal valve noise or poor sealing.

5. Regularly check the engine's exhaust status, fuel consumption and valve mechanism noise; clean the carbon deposits on the valve head and seat face during engine maintenance, and replace the valve in time if there is deformation, ablation, wear or poor sealing.