Email format error
Email cannot be empty
Email already exists
6-20 characters(letters plus numbers only)
The password is inconsistent
Email format error
Email cannot be empty
Email does not exist
6-20 characters(letters plus numbers only)
The password is inconsistent
480 Diesel Engine Valve Guide 12123421 14.01*8.03*56.0mm
If the valve guides are loose, replace them immediately with new parts. If no parts are available, use a punch to carefully punch some symmetrical small dents around the cylinder head guide hole to make its diameter smaller and apply some liquid sealant inside the cylinder head guide hole. Then press the guide into place.
The valve guide is made of high-strength alloy material, providing excellent wear and corrosion resistance, ensuring optimal performance in high-temperature and high-pressure environments. With high precision machining, it guarantees the accuracy and stability of the valve’s movement, improving engine performance and reliability. Its durability and versatility make it suitable for various working conditions.
High Precision:
The valve guide is characterized by its high precision machining, ensuring the accuracy and stability of the valve’s movement. This precision machining improves the engine’s performance and reliability, as it guarantees that the valve operates smoothly and efficiently. The valve guide’s high precision machining also ensures that the valve guide fits perfectly into the engine, preventing any leaks or malfunctions.
High-strength Material:
The valve guide is also made of high-strength alloy material, providing excellent wear and corrosion resistance. This material ensures that the valve guide can withstand the high-temperature and high-pressure working environment of the engine, making it highly durable and long-lasting. The valve guide’s excellent wear and corrosion resistance also prevent any damage or degradation to the valve guide over time, ensuring that the engine operates smoothly and efficiently for an extended period.
Excellent Sealing:
The valve guide is designed to provide a tight seal around the valve, preventing any leaks or malfunctions that could affect the engine’s performance. This sealing performance is critical to the engine’s operation, as it ensures that the engine can maintain the proper compression and combustion required for optimal performance. The valve guide’s excellent sealing performance also helps to reduce emissions and improve fuel efficiency, making it an essential component for meeting modern environmental standards.
Versatile Design:
The valve guide is also designed to be highly versatile, making it suitable for a wide range of working conditions and environments. It can withstand extreme temperatures, high pressures, and harsh operating conditions, making it ideal for use in heavy-duty applications such as construction equipment, trucks, and buses. The valve guide’s flexibility also simplifies its installation and upkeep, resulting in decreased maintenance expenses and downtime.
Product Parameter：
|
Product Name |
Valve Guides |
|
Application |
Engineering Machinery Engine |
|
OEM Number |
12123421 |
|
Engine Number |
480 |
|
Weight |
0.1kg |
|
Car Model |
Perkins |
|
Size |
14.01*8.03*56.0mm |
|
Condition |
100% Brand-new |
|
Warranty |
6 Months |
|
Packing |
Neutral / OEM |
|
Application Industries |
Machinery Repair Shops, Retail, Vehicles & Accessories |
Repair of valve guides
Once the valve guides are confirmed to be loose, it is best to replace them with new parts. If no parts are available, you can punch some burr-like bumps at the lower end of the valve guide, while using a punch to carefully punch some symmetrical small dents around the cylinder head guide hole to make its diameter smaller, and apply some liquid sealant inside the cylinder head guide hole, then press the guide into the cylinder head guide hole.
If you replace the new valve guide, don't forget to put a high temperature resistant O-ring on the lower end of the guide. Must pay attention to: if the old conduit and the new valve fit clearance reached the maintenance limit value, should replace the old conduit, while taking the above measures, so that the new conduit and the cylinder head hole have enough interference, not in the hot state when the self loosening.
If the cylinder head is broken, cylinder head cheek distortion deformation, in the intake stroke, the lubricating oil will be sucked into the combustion chamber to participate in the combustion, blue smoke burning oil phenomenon, such failure car most of the performance for the cylinder head and cylinder combination with oil stains infiltration phenomenon. Repair, should replace the cylinder head gasket and grinding cylinder head plane.
Valve guide repair notes:
1. Use the reamer to trim the catheter or remove carbon, the reamer into or out should be in accordance with the clockwise direction of rotation, and add the appropriate amount of oil lubrication, in order to increase the accuracy of the reamed hole and roughness. If the reamer is rotated counterclockwise or taken out when not moving, it will destroy the accuracy of the duct hole.
2. Valve guide material hardness is low, the installation should be used with a stop mandrel for operation assembly, and do not damage its mating surface.
3. The catheter and the cylinder head catheter hole interference amount is generally selected between 0.04 mm ~ and 0.06 mm. After multiple disassemblies should be appropriate to increase its assembly of the amount of interference to ensure the solidity of the fit, if necessary, should use liquid sealant to prevent loosening.
4. Regardless of whether the valve is replaced, after replacing the valve guide, should check the valve seal, if necessary, need to grind the valve and valve seat, to confirm that there is no leakage before the assembly can be used.
Valve guide should master the following technical elements：
Valve guide into the depth of the cylinder head is a very important technical indicator. If the valve guide into the air channel too much, will increase the intake and exhaust resistance, especially in the engine high speed, resistance will rise sharply; if the valve guide into the cylinder head too little, it is easy to cause valve guide and valve spring cover, valve rocker arm and other parts of the movement interference phenomenon.
Valve guide disassembly
First, use the depth vernier (or steel ruler) to measure the original valve guide on the upper end of the cylinder head out of the size of the plane, and record down. Then use special tools to dismantle, if the lack special tools, you can find a corresponding punch, the Singijeon head with a shoulder, its diameter is less than the outer diameter of the valve guide about 1.5rmn, and then use a hand hammer from the opposite direction of pressure into the valve guide force, carefully the valve guide out, try not to hurt the cylinder head.
Appropriate improvement of the valve guide
Some single-cylinder diesel engines are prone to the phenomenon of stuck exhaust valves, causing the diesel engine can not to start and work properly. The root cause of exhaust valve seizure is poor lubrication of the valve stem, caused by the accumulation of carbon. To prevent the exhaust valve from seizing, in addition to the use of links to maintain the engine in good technical condition, but also from the structure of the following measures can be taken, the effect is good.
