Why choose 4HE1 model crankshaft

Isuzu NPR/NQR series trucks enjoy a high reputation all over the world, and their excellent performance and reliability have won the trust of many car owners. However, even the best vehicles require regular maintenance and repair, especially for critical components like the crankshaft. The 4HE1 crankshaft is specially designed for Isuzu NPR/NQR series trucks. It adopts advanced manufacturing technology and strict quality control standards to ensure the high performance and long service life of the engine. Choosing the 4HE1 crankshaft is not only an improvement in vehicle performance, but also a protection for investment.

Detailed technical parameters of 4HE1 crankshaft

The 4HE1 crankshaft is made of high-strength alloy steel and is made through multiple processes such as precision casting, heat treatment and surface treatment. Its main technical parameters are as follows:

• Material selection: High-strength alloy steel, high temperature resistance and wear resistance
• machining accuracy: precision CNC machining, the error is less than 0.01mm
• Balance: Dynamic balance test to ensure smooth operation
• Surface treatment: Carburizing and quenching treatment to improve surface hardness and wear resistance

These technical parameters not only ensure the high performance of the crankshaft, but also effectively extend its service life.

high quality manufacturing process

The manufacturing process of the 4HE1 crankshaft strictly follows the ISO 9001 quality management system standard, and every link has been carefully designed and strictly controlled. From the selection of raw materials to the factory inspection of finished products, each step ensures the high quality of the product. Specific processes include:

• Precision casting: Use advanced casting equipment and technology to ensure the consistency and stability of the crankshaft blank
• Heat treatment: After carburizing, quenching, tempering and other processes, improve the toughness and hardness of the material
• Surface treatment: Using electroplating, spraying and other technologies to enhance the corrosion resistance and surface finish of the crankshaft
• Dynamic balance test: Conduct a dynamic balance test on the crankshaft to ensure its stability and reliability during high-speed operation

These strict manufacturing processes and quality control measures make the 4HE1 crankshaft one of the most reliable products on the market.

Installation Guide and Precautions

The correct installation method is essential to ensure the normal operation of the crankshaft. The following are the installation steps and precautions for the 4HE1 crankshaft:

• Tool preparation: Common tools such as wrenches, screwdrivers, hammers, and pulars
• Remove the old parts: Turn off the engine, drain the coolant and oil, remove the relevant connectors, and carefully take out the old crankshaft
• Clean the installation part: Use detergent to thoroughly clean the crankcase and bearing seat to ensure that no impurities remain.
• Apply lubricating oil: Apply an appropriate amount of lubricating oil evenly on the new crankshaft and bearing surfaces
• Install new parts: Slowly push the new crankshaft into the crankshaft hole, make sure the parts are aligned, and then install the connecting rod, piston and other components in turn
• Fastening bolts: Tighten the crankshaft fixing bolts one by one according to the specified torque value to ensure that they are firm and reliable
• Check the clearance: After the installation is completed, turn the crankshaft by hand to check whether there is jamming and ensure that it runs freely

Installation according to the above steps can effectively avoid problems caused by improper operation and ensure the normal operation of the crankshaft.

Daily maintenance and maintenance points