Porta da frente FAW: O 11 MSUs críticas para segurança essencial & Acesso

Welcome to this critical structural analysis of the Porta da frente FAW conjunto. Este é o completo, 11-tipo de componente “door-in-white” and trim assembly for the FAW Jiefang CA4251P66K24T1A3E5 6×4 trator semirreboque diesel. This is the primary “safety cell” for the driver, a complex, multi-function “lógica” assembly designed to provide side-impact protection, all-weather sealing, and the mounting foundation for all driver controls and electronics.

O Porta da frente FAW is far more than a simple panel. Isso é “lógica” is to be a fully integrated, modular system. This includes the ‘Welded Assy’ (the structural steel shell), the ‘Sealing Strip’ and ‘Waterproof Membrane’ (the dual-seal logic), the ‘Window Glass’ and ‘Lifter Assy’ (the visibility logic), and the ‘Trim Panel’ (the HMI and NVH logic).

This in-depth guide is essential for collision repair specialists, body shop technicians, and parts managers. Vamos desconstruir todo Porta da frente FAW conjunto, analyzing all 11 Minimum Serviceable Unit (Universidade Estadual de Moscou) types. We will explore the “safety beam” logic of the door shell, o “water curtain” logic of the membrane, o “tempered” logic of the glass, and the specific, high-tensile fastener system that holds this critical assembly together.

Essencial 1: O “Safety Cell” Lógica (Universidades Estadunidenses 1 & 8) (O “Mais longo” Módulo)

A fundação do Porta da frente FAW is its primary structural MSU: the ‘Left front door welded assy’ (6100055-B27) and ‘Right front door welded assy’ (6100060-B27). Este é o “Porta em Branco” (DIW), the bare, unpainted, welded steel shell. Isso é “lógica” é 100% about safety and rigidity.

Side-Impact Safety Logic: This MSU is not a hollow, single-layer panel. Welded *inside* this shell is a **high-strength steel intrusion beam**. Esse “guard beam” is a horizontal bar of hardened (often Boron) steel. Isso é “lógica” is to be the primary energy-absorbing component in a side-impact collision. It is designed to resist intrusion into the cab, protecting the driver’s “survival space” (their hips and torso).

Estrutural & Hinge Logic: This welded shell is also the “chassis” for all other MSUs. Isso é “lógica” is to provide absolute rigidity. O Porta da frente FAW is a heavy component, and it must *never* sag or flex. This shell features precision-stamped, reinforced mounting points for the door hinges.

The ‘Hexagon flange bolt’ (Q1840612), Universidade Estadual de Moscou 8, is the hardware for this. O “lógica” destes 12 high-tensile, flanged bolts is to create the load-bearing connection between these hinge points and the cab’s structural A-pillar. They are designed to resist the immense “cisalhar” force of the door’s weight.

Facilidade de manutenção (Universidade Estadual de Moscou): The ‘Welded Assy’ is the primary MSU in any collision repair. Its precise geometry is critical. Even a slightly-bent Porta da frente FAW shell will fail to seal against the ‘Sealing strip’ (Universidade Estadual de Moscou 3), resultando em um “whistling” wind noise and water leaks. It is designed for replacement, not repair.

Essencial 2: O “Dual-Seal” Weather Logic (Universidades Estadunidenses 3 & 11)

O Porta da frente FAW‘s “comfort logic” is defined by its two-part sealing system. This is not just one gasket, but a “dual-seal” defense.

Universidade Estadual de Moscou 3: ‘Front door sealing strip’ (6102187-A01 / 6102188-A01): Este é o “Primary Seal.” It is the large, hollow-core EPDM rubber weatherstripping that attaches to the door shell. Isso é “lógica” is to provide the “compression seal.” Quando a porta está fechada, this gasket is “squeezed” against the cab body, creating the primary barrier that blocks wind noise, água, pó, and fumes.

Universidade Estadual de Moscou 11: ‘Waterproof membrane-front panel’ (5302821-A01): Este é o “Secondary Seal,” ou “Water Curtain.” This is one of the most critical MSUs for cab longevity. O “lógica” of a modern door is that it is *designed to get wet inside*. Water from the ‘Window Glass’ (Universidade Estadual de Moscou 2) drains *inside* the door shell.

This membrane (a large, adhesive-backed plastic sheet) é o “lógica” that stops that water. It is applied to the *inner* door shell (under the trim panel). It covers the large service holes, agindo como um “curtain” that directs the water *down* to the drain holes at the bottom, preventing it from soaking the ‘Trim Panel’ (Universidade Estadual de Moscou 4) and leaking onto the cab floor. A torn membrane *will* cause a water leak.

Essencial 3: O “Visibilidade” Lógica (Window System MSUs 2, 5, 6)

This sub-assembly within the Porta da frente FAW controls visibility and ventilation.

Universidade Estadual de Moscou 2: ‘Front door glass’ (6103021-A01 / 6103022-A01): Este é o “Tempered Safety Glass” Universidade Estadual de Moscou. Unlike the front windscreen (laminated), this side glass has a “dicing” lógica. It is tempered, making it 4-5x stronger than normal glass. If it breaks, isso é “lógica” is to shatter into thousands of tiny, harmless “pebbles,” preventing injury and allowing for emergency egress.

Universidade Estadual de Moscou 5: ‘Window lifter assy’ (Multiple P/Ns): Este é o “músculo” that lifts the glass. O “lógica” of the parts list shows *both* manual (B27) and electric (AA01) opções.

• Manual (B27): A “scissor-lift” regulator.
• Elétrico (AA01): A cable-driven regulator with a 24V DC motor, connected to the ‘Door Controller’ (Conjunto 588).

Universidade Estadual de Moscou 6: ‘Window lifter handle assy’ (6104045-A01): This MSU is the “interface” for the *manual* (B27) window lifter.

Essencial 4: O “HMI & Fixador” Lógica (Universidades Estadunidenses 4, 7, 9, 10)

This final group covers the driver-facing panel and the hardware that holds the Porta da frente FAW together.

Universidade Estadual de Moscou 4: ‘Front door trim panel assy’ (6101415-A01 / 6101420-A01): Este é o “Interface Homem-Máquina” (HMI) e “Nvh” lógica. It’s the molded, cosmetic panel that houses the door handle, speaker, and window switches/handle. Isso é “lógica” is to provide a durable, “soft-touch,” and aesthetically pleasing surface. It also has a thick “sound-deadening” mat on its back, acting as the final “acoustic absorber” for road noise.

O fixador “Lógica” (Universidades Estadunidenses 7, 9, 10): Este é o “antivibração” lógica.

• Universidade Estadual de Moscou 7 & 10 (Screws & Nuts): Used to mount the ‘Lifter handle’ (Universidade Estadual de Moscou 6).
• Universidade Estadual de Moscou 9 (‘Combination screw’): Esses 12 bolts are the “antivibração” lógica. They have a captive lock washer. Deles “lógica” is to securely mount the high-vibration ‘Window lifter assy’ (Universidade Estadual de Moscou 5) to the metal door shell (Universidade Estadual de Moscou 1) without it ever shaking loose.

FAW Front Door Parts List & Especificações

A tabela a seguir fornece o completo, detalhamento de todos 11 tipos de componentes identificados no Porta da frente FAW montagem para o trator FAW CA4251P66K24T1A3E5.

Especificações

As especificações para o Porta da frente FAW are defined by its function as a multi-part, sealed, structural safety cell and HMI-mounting system.