The Connecting rod assembly is a fundamental component of the HOWO 7 6X4 Dump Truck engine, responsible for transmitting the force from the piston to the crankshaft. This assembly must withstand extreme mechanical and thermal stresses, making its design and material selection critical for engine durability and performance. For a complete reference of all engine parts and their specifications, consult the Sinotruk Catalog which provides detailed cross-references and original equipment part numbers.
The Connecting rod assembly includes the connecting rod itself, bearing shells, and the Connecting rod bolt that secures the big end cap. This bolt is a critical fastening element that must be torqued to precise specifications to ensure the bearing clearance and integrity of the assembly. The bolt is manufactured from high-grade alloy steel and is heat-treated to provide the required strength and fatigue resistance.
The Connecting rod assembly is forged from a single piece of steel, with a carefully designed cross-section to minimize weight while maintaining rigidity. The big end is split into the rod body and the cap, which are held together by the Connecting rod bolts. These bolts are designed to stretch slightly when tightened, providing a clamping force that can withstand the high inertial loads of the reciprocating mass.
Regular inspection of the Connecting rod assembly is essential, especially the Connecting rod bolt, which can suffer from fatigue over time. Replacing the bolts during an engine overhaul is a standard practice to prevent catastrophic failure. Using genuine Connecting rod bolts ensures that the correct material properties and thread geometry are maintained, providing peace of mind and reliable engine operation.
The Connecting rod bolt is a high-strength fastener that secures the connecting rod cap to the rod body, maintaining the correct bearing clearance and preventing separation during engine operation. It is manufactured from heat-treated chromium-molybdenum steel with a rolled thread for increased fatigue strength. The bolt features a precise thread form and a reduced shank diameter to provide elasticity, allowing it to stretch under torque and maintain clamp load. Proper torque sequence and angle tightening are critical to ensure that the bolt yields within its elastic limit, providing a safe and reliable joint that can withstand millions of load cycles without failure.
| No. | Part No. | Description |
|---|---|---|
| 1 | VG1500030023 | Connecting rod bolt |
Premium forged steel construction. Our connecting rods are forged from high-quality micro-alloyed steel, providing an excellent strength-to-weight ratio. The grain flow lines follow the contour of the rod, enhancing fatigue resistance and ensuring that the Connecting rod assembly can handle the high cylinder pressures of the HOWO 7 6X4 engine without deformation.
Precision bolt manufacturing with controlled tightening. Each Connecting rod bolt is manufactured to exacting tolerances, with a rolled thread that provides superior fatigue strength compared to cut threads. The bolts are supplied with a specialized lubricant to achieve consistent friction during torque application, ensuring that the preload is accurate and repeatable.
Enhanced surface treatment for durability. The connecting rod is shot-peened to increase its surface hardness and resist crack initiation. The bolt is coated with a phosphate layer that provides corrosion protection and helps maintain consistent torque values throughout the service life of the engine.
OEM-grade quality and traceability. Our Connecting rod assembly components are produced under strict quality control, with each bolt and rod batch subjected to material testing and dimensional checks. This ensures that every part meets the original equipment standards, providing fleet operators and rebuilders with the confidence of a genuine fit and reliable performance.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.
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