Biela FAW J6P: Desconstruindo 5 Peças críticas para a confiabilidade do motor

Welcome to this expert deconstruction of the Biela FAW J6P conjunto, the single most critical “force transfer” component in the engine of the FAW Jiefang CA3250P66K2L1T1E 6×4 caminhão despejando.

This is not a simple part; é um “Logic Assembly” engineered to survive the most hostile environment in the powertrain.

Isso é “lógica” is to act as the “arm” 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” disso Biela FAW J6P (P/N 1004021-36D) é o seu “fracture-split” manufacturing. Unlike older designs, o “big end” cap is not sawn off; it is forged as a single piece and then *snapped* apart with a high-powered press. Esse “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 Biela FAW J6P. Iremos analisar o “Force Transfer Body” (the rod itself), o “Pivot Point Logic” (the small-end bush), o “Hydrodynamic Bearing Logic” (the upper and lower bearing shells), and the absolutely critical “Lógica do Fixador” (the single-use, high-tension bolts).

Essencial 1: O “Fracture-Split” Body Logic (Componente 5)

Este é o principal componente estrutural, the core of the Biela FAW J6P.

1. Componente: ‘Fracture-split connecting rod body’ (1004021-36D)
Este componente (Comp. 5) is a masterpiece of modern metallurgy. Isso é “lógica” is to handle two distinct and opposing forces. Primeiro, it must withstand the “Compression Force”—the immense, 2000+ PSI crushing load from the combustion stroke. Segundo, it must withstand the “Tension Force”—the high-RPM “puxar” ou “stretch” force as the piston is yanked back down on the exhaust stroke. To handle this, o Biela FAW J6P é “drop-forged” (not cast) from a high-tensile steel alloy, often into a lightweight but incredibly strong “I-beam” perfil.

As mentioned, isso é “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, making the Biela FAW J6P a true zero-compromise component.

Essencial 2: O “Pivot Point” Lógica (Componente 4)

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

1. Componente: ‘Connecting rod small end bush’ (1004024-630-0000)
Esse (Comp. 4) é o “Sacrificial Pivot Logic.” O “small end” do Biela FAW J6P oscillates back and forth on the hardened steel ‘Piston pin’. To prevent the hardened pin from destroying the forged steel rod, this “bush” is inserted. É um “sacrificial” componente. Isso é “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.”

Isso é “fluid logic” is also critical. The bush often has a precise oiling hole or internal grooves that capture “respingo” óleo, 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 “como novo” precision to the Biela FAW J6P conjunto.

Essencial 3: O “Hydrodynamic Bearing” Lógica (Componentes 6, 7)

Este grupo “lógica” is to allow the “big end” do Biela FAW J6P to spin at thousands of RPM on the crankshaft *without ever physically touching it*.

Componentes: ‘Connecting rod upper bearing’ (1004026-36D) & ‘Lower bearing’ (1004028-36D)
Estes são os “Hydrodynamic Logic” componentes. O “big end” do Biela FAW J6P “floats” on a microscopic, high-pressure film of engine oil. These ‘bearings’ (Comp. 6 & 7) are the precision, multi-layer, soft-metal shells that are engineered to hold this oil film. Deles “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.”

O “Asymmetrical Load Logic” is also key. The ‘Upper bearing’ (Comp. 6), which sits in the main rod body, takes the full, massive, downward *push* of the piston’s combustion stroke. The ‘Lower bearing’ (Comp. 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 Biela FAW J6P.

Essencial 4: O “Fixador Crítico” Lógica (Componente 8)

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

1. Componente: ‘Connecting rod bolt’ (1004023A29D)
A lista pede 12 parafusos (Comp. 8), two for each of the six Biela FAW J6P Assembléias. Estes são os “Clamping Force Logic.” They must handle the two opposing forces that try to rip the rod apart: o “empurrar” from combustion and the “puxar” from high-RPM “stretch.”

Estes são “Torque para rendimento” (TTY) parafusos. Deles “lógica” é que eles são projetados para serem apertados até um ponto específico onde *se esticam permanentemente*. This stretching action turns the bolt into a high-tension spring, providing the perfectly consistent clamping force that the “fracture-split” cap (Comp. 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 Biela FAW J6P is serviced. Re-using these bolts will lead to bearing failure and catastrophic engine destruction.

FAW J6P Connecting Rod Parts List & Especificações

A tabela a seguir fornece o completo, detalhamento de todos 5 serviceable component types identified in this Biela FAW J6P montagem para o FAW Jiefang CA3250P66K2L1T1E 6×4 caminhão despejando.

Especificações principais

As especificações para o Biela FAW J6P Assembly are defined by its function as the core of the engine’s rotating assembly.