Шатун FAW J6P: Деконструкция 5 Важные детали для надежности двигателя

Welcome to this expert deconstruction of the Шатун FAW J6P сборка, the single most critical “force transfer” component in the engine of the FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал.

This is not a simple part; это “Логическая сборка” engineered to survive the most hostile environment in the powertrain.

Его “логика” is to act as the “рука” that converts the linear, vertical force of the piston’s combustion into the rotational, torque-producing force of the crankshaft. This component is the very definition of “heavy-duty.”

The core “Design Logic” of this Шатун FAW J6P (P/N 1004021-36D) is its “fracture-split” manufacturing. Unlike older designs, а “big end” cap is not sawn off; it is forged as a single piece and then *snapped* apart with a high-powered press. Этот “fracture logic” creates a perfectly irregular, 100% unique, and perfectly matched surface. This design is superior because it creates an unyielding lock that completely prevents “cap walk” (side-to-side movement) at high RPM, ensuring the hydrodynamic bearing stays perfectly round and functional.

This technical guide is an essential resource for engine rebuilders, machine shop technicians, and fleet parts managers. We will deconstruct the entire 5-component-type group associated with the Шатун FAW J6P. Мы проанализируем “Force Transfer Body” (the rod itself), а “Pivot Point Logic” (the small-end bush), а “Hydrodynamic Bearing Logic” (the upper and lower bearing shells), and the absolutely critical “Логика крепления” (the single-use, high-tension bolts).

Основной 1: The “Fracture-Split” Body Logic (Компонент 5)

This is the main structural component, ядро Шатун FAW J6P.

1. Компонент: ‘Fracture-split connecting rod body’ (1004021-36Д)
Этот компонент (Комп 5) is a masterpiece of modern metallurgy. Его “логика” is to handle two distinct and opposing forces. Первый, it must withstand the “Compression Force”—the immense, 2000+ PSI crushing load from the combustion stroke. Второй, it must withstand the “Tension Force”—the high-RPM “тянуть” или “stretch” force as the piston is yanked back down on the exhaust stroke. To handle this, а Шатун FAW J6P является “drop-forged” (not cast) from a high-tensile steel alloy, often into a lightweight but incredibly strong “I-beam” profile.

As mentioned, его “Fracture-Split Logic” is its key manufacturing feature. This process creates a perfectly interlocking, non-slip cap. This is the only design that can reliably ensure the “big end” bearing bore remains perfectly round under the extreme, oscillating loads of a turbocharged diesel engine. This precision is what protects the bearings and crankshaft from failure, делая Шатун FAW J6P a true zero-compromise component.

Основной 2: The “Pivot Point” Логика (Компонент 4)

This component forms the “wrist” of the assembly, the pivot point where the Шатун FAW J6P connects to the piston via the ‘Piston pin’.

1. Компонент: ‘Connecting rod small end bush’ (1004024-630-0000)
Этот (Комп 4) это “Sacrificial Pivot Logic.” The “small end” принадлежащий Шатун FAW J6P oscillates back and forth on the hardened steel ‘Piston pin’. To prevent the hardened pin from destroying the forged steel rod, этот “bush” is inserted. Это “жертвенный” компонент. Его “material logic” is that it is made from a softer, oil-retaining material (like a bronze alloy). It is designed to be the “wear item.”

Его “fluid logic” is also critical. The bush often has a precise oiling hole or internal grooves that capture “всплеск” масло, maintaining a constant film of lubrication for the piston pin. When an engine is rebuilt, replacing these 6 bushes is a mandatory step to restore the “like-new” precision to the Шатун FAW J6P сборка.

Основной 3: The “Hydrodynamic Bearing” Логика (Компоненты 6, 7)

This group’s “логика” is to allow the “big end” принадлежащий Шатун FAW J6P to spin at thousands of RPM on the crankshaft *without ever physically touching it*.

Компоненты: ‘Connecting rod upper bearing’ (1004026-36Д) & ‘Lower bearing’ (1004028-36Д)
Это “Hydrodynamic Logic” компоненты. The “big end” принадлежащий Шатун FAW J6P “floats” on a microscopic, high-pressure film of engine oil. These ‘bearings’ (Комп 6 & 7) are the precision, multi-layer, soft-metal shells that are engineered to hold this oil film. Их “Sacrificial Logic” means they are the “wear item.” If any debris (carbon, metal) gets in the oil, it will embed in the soft bearing, saving the hardened, expensive crankshaft from scratches or “scoring.”

The “Asymmetrical Load Logic” is also key. The ‘Upper bearing’ (Комп 6), which sits in the main rod body, takes the full, massive, downward *push* of the piston’s combustion stroke. The ‘Lower bearing’ (Комп 7), which sits in the cap, takes the high-RPM “whipping” *pull* on the exhaust and intake strokes. They are often engineered with different materials or features to handle these specific, opposing loads, ensuring the long-term reliability of the Шатун FAW J6P.

Основной 4: The “Critical Fastener” Логика (Компонент 8)

This final component is arguably the single most stressed fastener in the entire engine. Его “логика” is to provide a massive, unyielding clamping force.

1. Компонент: ‘Connecting rod bolt’ (1004023A29D)
The list calls for 12 болты (Комп 8), two for each of the six Шатун FAW J6P собрания. Это “Clamping Force Logic.” They must handle the two opposing forces that try to rip the rod apart: а “толкать” from combustion and the “тянуть” from high-RPM “stretch.”

Это “Torque-to-Yield” (телетайп) болты. Их “логика” is that they are designed to be torqued to a specific point where they *permanently stretch*. This stretching action turns the bolt into a high-tension spring, providing the perfectly consistent clamping force that the “fracture-split” cap (Комп 5) requires to stay locked in place. This is why they are *single-use*. Once stretched, they are compromised and MUST be replaced any time the Шатун FAW J6P is serviced. Re-using these bolts will lead to bearing failure and catastrophic engine destruction.

FAW J6P Connecting Rod Parts List & Технические характеристики

В следующей таблице представлена ​​полная, подробная разбивка всех 5 serviceable component types identified in this Шатун FAW J6P сборка для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал.

Основные характеристики

Технические характеристики Шатун FAW J6P Assembly are defined by its function as the core of the engine’s rotating assembly.