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The J3600-1005030C crankshaft pulley assembly is a genuine SINOTRUK HOWO component engineered to drive engine accessories such as the alternator, water pump, and power steering pump with minimal vibration and maximum reliability. As a critical element of the trusted Sinotruk howo parts family, this pulley ensures precise rotational stability and belt alignment, reducing wear on belts and bearings. Manufactured from high‑strength cast iron with a dynamically balanced design, the J3600-1005030C assembly withstands the extreme torsional vibrations and thermal cycles of heavy‑duty diesel engines. Investing in this authentic component guarantees smooth accessory drive operation and long‑term engine durability in mining, construction, and long‑haul applications.
Crankshaft Pulley Assembly
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The J3600-1005030C crankshaft pulley features a precision‑machined cast iron hub that is induction‑hardened at the keyway and bore to resist wear from repeated torque pulses. The multi‑groove pulley profile is engineered to accommodate multiple accessory belts without slippage, ensuring consistent drive to the alternator, water pump, and power steering pump. The assembly includes an integral torsional damper (if applicable) that absorbs crankshaft vibrations, protecting the engine from harmonic fatigue.
Each J3600-1005030C assembly is dynamically balanced to less than 5 g·cm, minimizing vibration and extending the life of belts and bearings. The bolt holes are precisely drilled and countersunk to match the crankshaft flange, guaranteeing a secure fit with OEM bolts. The outer surface is coated with a corrosion‑resistant paint to withstand engine bay conditions. This meticulous manufacturing ensures reliable performance for hundreds of thousands of kilometers.
The table below provides detailed technical data for the genuine SINOTRUK HOWO J3600-1005030C crankshaft pulley assembly. These specifications are essential for verifying compatibility.
| Parameter | Specification | Details |
|---|---|---|
| OEM Part Number | J3600-1005030C | SINOTRUK HOWO Original Code |
| Product Name | Crankshaft Pulley Assembly | Includes torsional damper |
| Material | Cast iron (GG25) hub, rubber damper element | High strength, vibration damping |
| Outer Diameter | 195 mm | ±1 mm |
| Number of Grooves | 6 (poly‑V) or 2 (classic V) | Confirm belt type |
| Crankshaft Bore Diameter | 45 mm | H7 tolerance |
| Bolt Circle (mounting) | 4 holes, 78 mm PCD | M12 x 1.5 |
| Balance Quality | G6.3 (ISO 1940) | Dynamic balancing |
| Weight (approx.) | 6.2 kg | Complete assembly |
| Applicable Engines | WD615, MC11, MC13, D10 series | Check crankshaft nose |
The J3600-1005030C crankshaft pulley assembly is a direct OEM replacement for Howo engines including the WD615, MC11, MC13, and D10 series. It mounts directly to the crankshaft snout and drives the serpentine or multi‑ribbed belts that power critical accessories. A properly functioning pulley ensures that the alternator charges correctly, the water pump circulates coolant, and the power steering pump provides assist. Any imbalance or wear can lead to belt slip, accessory underperformance, and increased vibration.
In chassis applications, the crankshaft pulley is also a key component for engines equipped with PTO drives that rely on belt power. The genuine J3600-1005030C assembly maintains correct belt alignment and tension, preventing premature belt failure and ensuring reliable operation of auxiliary equipment. Fleet operators trust genuine SINOTRUK HOWO parts to keep their vehicles running smoothly under the most demanding conditions.
When replacing the crankshaft pulley, always use a new crankshaft bolt and tighten to the specified torque. Check the rubber damper for cracks or separation; if damaged, replace immediately to avoid crankshaft harmonic failure.
Correct installation of the J3600-1005030C pulley is essential to ensure proper accessory drive and long service life. Follow these steps:
Remove the fan belt and any accessories blocking access. Clean the crankshaft nose and the mounting flange. Inspect the crankshaft key and keyway for damage.
Align the key with the pulley keyway and slide the pulley onto the crankshaft. Install the new bolt and washer, then torque to the specified value (typically 280‑320 Nm). Use a thread locker if recommended.
Reinstall belts and adjust tension. Start the engine and check for vibration or belt misalignment. Verify that all accessories are operating correctly.
A failing crankshaft pulley can cause accessory drive problems and engine vibration. Common signs that replacement is needed include:
If any of these symptoms are observed, immediate replacement with a genuine J3600-1005030C pulley is recommended. Ignoring a damaged pulley can lead to belt failure, overheating, and loss of power steering or charging.
The integrated torsional damper absorbs harmful crankshaft vibrations, protecting bearings and extending engine life.
Precision‑machined grooves ensure proper belt tracking, reducing slip and wear on alternators, pumps, and compressors.
Factory‑balanced and dimensionally identical to the original, guaranteeing a perfect fit and smooth operation without modifications.
To maximize the service life of your J3600-1005030C crankshaft pulley, follow these best practices:
By adhering to these guidelines, you ensure that the J3600-1005030C pulley performs optimally throughout its intended service interval.
Aftermarket pulleys often use inferior castings, lack proper balancing, and have poor quality rubber dampers that fail prematurely. The genuine J3600-1005030C is manufactured to the exact specifications of the original equipment, using high‑grade cast iron and precision‑formulated rubber compounds. Each assembly is dynamically balanced and tested for dimensional accuracy, guaranteeing that it will perform exactly as the original part.
By choosing authentic SINOTRUK HOWO parts, you protect your investment and ensure your truck maintains its reliability and resale value. The Sinotruk howo parts catalog includes a full range of engine and chassis components engineered for maximum durability. For fleet managers and owner‑operators who demand the best, the genuine J3600-1005030C is the only responsible choice.
The J3600-1005030C crankshaft pulley is used across a wide range of Howo models: T7H, A7, and classic Howo‑7 series equipped with WD615, MC11, MC13, and D10 engines. Always verify the number of grooves and the crankshaft nose design using the service manual.
Each J3600-1005030C is individually packaged in a sturdy cardboard box with foam supports to protect the pulley during shipping. The package includes the pulley assembly only; the crankshaft bolt should be ordered separately.
Production of the J3600-1005030C takes place in IATF 16949 certified facilities, using precision casting and CNC machining with in‑process gauging. Statistical process control ensures that dimensional variations are kept to a minimum. Every batch is accompanied by a material certificate and balance test report, guaranteeing that the pulleys delivered are identical to those fitted on new Howo trucks at the factory.
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