The crankcase assembly is a fundamental component of the HOWO 7 6X4 Dump Truck engine, enclosing the crankshaft and providing structural support for the rotating assembly. This assembly ensures that the engine operates with minimal vibration and maximum efficiency. For a complete overview of all engine components, refer to the Sinotruk Catalog which provides detailed part numbers and specifications.
The crankcase assembly includes critical fastening elements such as the Main bearing bolt, which secures the main bearing caps to the crankcase. These bolts are engineered to withstand the extreme forces generated during combustion, ensuring that the crankshaft remains precisely aligned and that the bearing clearances are maintained within specification.
This crankcase assembly is manufactured from high-strength cast iron with integrated oil galleries and stiffening ribs. The design minimizes flex and distortion under load, which is essential for the longevity of the crankshaft and connecting rod bearings. Regular inspection and replacement of the main bearing bolts are recommended to prevent fatigue failure and ensure the integrity of the crankcase assembly.
Proper maintenance of the crankcase assembly is vital for the overall health of the engine. Using genuine main bearing bolts and following the correct torque procedures ensures that the crankcase assembly maintains its structural integrity, reducing the risk of catastrophic engine failure and extending the service life of the HOWO 7 6X4 Dump Truck.
The Main bearing bolt is a high-strength fastener that secures the main bearing caps to the crankcase, ensuring that the crankshaft remains in precise alignment under all operating conditions. These bolts are manufactured from heat-treated alloy steel and feature a rolled thread for consistent clamp load. Proper torque application is critical to prevent bearing cap movement and to maintain the correct oil film clearance between the crankshaft journals and the bearings.
| No. | Part No. | Description |
|---|---|---|
| 1 | VG14010217 | Main bearing bolt |
| 2 | VG14010114 | Main bearing bolt |
OEM-grade material quality. Our crankcase assembly is cast from high-strength alloy iron with precise metallurgical control, ensuring superior rigidity and thermal stability. The main bearing bolts are manufactured to exacting standards, providing consistent clamp load and resistance to fatigue failure.
Precision engineering for perfect fit. The crankcase assembly features precision-machined bearing saddles and bolt holes, ensuring that the main bearing bolts align perfectly with the bearing caps. This reduces the risk of bearing misalignment and extends the life of the crankshaft and bearings.
Enhanced durability through surface treatment. All main bearing bolts receive a protective coating against corrosion, while the crankcase casting is treated to resist oil degradation and thermal cycling. This extends the service life of the crankcase assembly even under high-load conditions.
Proven performance in heavy-duty applications. The crankcase assembly has been rigorously tested in real-world conditions, including extreme temperatures and continuous high-load operation. Our components are trusted by fleet operators worldwide for their reliability and ability to minimize unplanned downtime.
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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