Polia FAW J6P: Desconstruindo a lógica de 4 partes para uma unidade de acessórios perfeita

Bem-vindo a esta análise especializada do Polia FAW J6P (P/N 1005046-36D), the core of the Front-End Accessory Drive (FEAD) sistema para o FAW Jiefang CA3250P66K2L1T1E 6×4 caminhão despejando.

This component is not a standalone part; it is a critical piece of the “Crankshaft Logic Assembly,” which also includes the ‘Silicone oil damper’ (1005190-36D).

O “lógica” do Polia FAW J6P é duplo: it must transfer rotational power from the crankshaft to all engine accessories (like the alternator and water pump), and it must survive the engine’s most destructive force—torsional vibration.

O “Torsional Logic” is the key to this entire assembly. A heavy-duty diesel engine does not spin smoothly; it fires in six violent “punches” per cycle. This creates a destructive twisting and untwisting force on the crankshaft. This vibration, if unmanaged, will shred the serpentine belt and destroy the bearings in the alternator and water pump. É por isso que Polia FAW J6P (Comp. 2) is not bolted directly to the crank; it is bolted *to* the ‘Silicone oil damper’ (Comp. 3). The damper and pulley work as a single, tuned unit. O Polia FAW J6P é o “interface” for the belt, and the damper is the “absorber” for the vibration.

Este guia técnico é um recurso essencial para técnicos de chassis, especialistas em motores, and parts managers seeking to understand the complete front-end drive system. Although the master parts list (9) includes the entire crankshaft, we will deconstruct the four *primary* components of the “Front-End Logic” relevant to the Polia FAW J6P: o “Accessory Drive Logic” (the pulley itself), o “NVH Damping Logic” (the silicone oil damper), o crítico “Lógica de Selagem” (the front oil seal), e o “Lógica do Fixador” (the specialized damper bolts).

Essencial 1: O “Accessory Drive” Lógica (Componente 2)

Este é o principal componente do Polia FAW J6P sistema, the part that makes physical contact with the serpentine belt.

1. Componente: ‘Multi-groove belt pulley – Virabrequim’ (1005046-36D)
Este componente (Comp. 2) é o “Lógica de tomada de força.” Its sole function is to transfer the rotational energy of the crankshaft to the engine’s “accessories”—the water pump (for cooling), o alternador (for electricity), the A/C compressor, and the power steering pump. O “multi-ranhura” (ou “serpentina”) design is a modern, high-efficiency logic. It uses a single, wide, flat belt with multiple “V” grooves, which provides a much larger contact patch for grip, reduces slippage, and lasts significantly longer than older, multiple V-belt systems.

O “Material & Balance Logic” disso Polia FAW J6P também é crítico. It is made from heavy-duty, nodular cast iron and is “dynamically balanced” at the factory. This means it is weighted to spin perfectly true, with zero “oscilar” (acabar). An unbalanced Polia FAW J6P would cause intense vibration, which would quickly destroy the serpentine belt and, mais importante, the internal bearings of the accessories it drives, leading to premature water pump or alternator failure.

Essencial 2: O “NVH Damping” Lógica (Componentes 1, 3)

This group is the essential partner to the Polia FAW J6P. Isso é “lógica” is to absorb the destructive torsional vibrations from the crankshaft.

1. Componente: ‘Silicone oil damper’ (1005190-36D)
Esse (Comp. 3) é o “Amortecedor Harmônico” ou “Harmonic Balancer.” It is the most critical “Lógica NVH” component on the entire engine. Isso é “lógica” is to be a tuned “amortecedor” for the crankshaft. It consists of a heavy, outer “inertia ring” that is separated from the inner “eixo” by a layer of thick, viscous silicone fluid. As the crankshaft violently twists and untwists (torsional vibration), the inner hub moves with it. The heavy outer ring resists this change in speed, e o “shearing” of the silicone fluid between them absorbs this violent energy, converting it into harmless heat.

O Polia FAW J6P (Comp. 2) bolts directly *to* this damper, not the crank. Esse “Lógica de Isolamento” is what saves the pulley and the belt from being destroyed by these vibrations. A failed damper (Por exemplo, if the fluid leaks out) will cause a severe, low-RPM vibration and will quickly lead to the failure of the Polia FAW J6P or even a snapped crankshaft.

2. Componente: 'Parafuso amortecedor’ (1005048K29D)
These six (6) parafusos (Comp. 1) são os “Lógica do Fixador” for the damper. They are high-tensile, load-critical fasteners that hold the entire damper and Polia FAW J6P assembly onto the nose of the crankshaft. These bolts are often “Torque para rendimento” (TTY) and single-use.

Essencial 3: O “Selagem & Internal Drive” Lógica (Componentes 4, 7, 8)

This group manages the “interface” between the spinning Polia FAW J6P assembly and the stationary engine block, as well as driving internal components.

1. Componente: ‘Front oil seal’ (1005050-29D)
Esse (Comp. 4) é o “Dynamic Sealing Logic.” É uma temperatura alta, oil-resistant rubber lip seal. Isso é “lógica” is to be pressed into the engine’s stationary “front cover” while its inner lip rides on a smooth, polished “manga” on the back of the damper hub. This creates a perfect seal, preventing oil from leaking out of the “front main” of the crankcase. A failure here is a common problem that will sling engine oil all over the Polia FAW J6P and the serpentine belt, causing the belt to slip, guincho, and fail prematurely.

2. Componentes: ‘Crankshaft timing gear’ (1005037-29D) & ‘Oil pump drive gear’ (1005039-36D)
These gears (Comp. 7 & 8) are located *behind* the damper, on the same crankshaft. Deles “lógica” is to drive the engine’s “internals.” The ‘Timing gear’ drives the camshaft (for the valves) and/or the injection pump. The ‘Oil pump drive gear’ drives the engine’s oil pump. They are part of the master “Virabrequim” assembly list that the Polia FAW J6P belongs to.

Essencial 4: O “Master Assembly” Contexto (Componentes 6, 12, 13)

To fully understand the Polia FAW J6P‘s role, it is essential to see its place in the “mestre” conjunto. The parts list provided is for the entire crankshaft group, from front to back.

1. Componente: ‘Crankshaft’ (1005014-36D)
Esse (Comp. 6) é o “Spine Logic.” O Polia FAW J6P and damper bolt to the “front nose” of this forged steel shaft. The ‘Crankshaft’ is the central component that carries power from all six pistons.

2. Componente: ‘Flywheel’ (1005121-630-0000)
Esse (Comp. 12) é o “Inertia Logic,” located at the *opposite* end of the crankshaft from the Polia FAW J6P. Its massive weight stores rotational energy to smooth out the engine’s pulses and provides the friction surface for the clutch.

3. Componente: ‘Flywheel bolt’ (1005071K29D)
These ten (10) parafusos (Comp. 13) são os “Rear Fastener Logic.” They secure the flywheel to the rear flange of the crankshaft. Like the damper bolts, these are single-use TTY bolts. Understanding this full assembly—from the Polia FAW J6P at the front to the flywheel at the back—is key to proper engine service.

Polia FAW J6P & Crankshaft Assembly Parts List

A tabela a seguir fornece o completo, detalhamento de todos 14 component types in the master crankshaft assembly, which includes the Polia FAW J6P, para o FAW Jiefang CA3250P66K2L1T1E 6×4 caminhão despejando.

Especificações principais

As especificações para o Polia FAW J6P are defined by its function as the power take-off for the engine’s front-end accessory drive.