Блок логики верхней решетки FAW: The 3 Основные MSU для герметичного, Тихая кабина

Welcome to this in-depth technical breakdown of the Блок логики верхней решетки FAW (Артикул: 5610010-А01). This component is the primary ventilation and air intake/exhaust port for the rear bulkhead of the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This is not a decorative part; это критично “логика” assembly designed to manage air pressure and protect the cab.

The “логика” принадлежащий Блок логики верхней решетки FAW is twofold. Первый, it functions as a louvered vent, allowing the HVAC system to draw in fresh air from a high, “clean” location or to exhaust stale air, depending on the model. Второй, it is a key part of the cab’s “уплотнение” система. Its design is a complete, 13-piece assembly that provides a weatherproof, dust-proof, and rattle-free seal against the cab’s metal body.

This expert guide is essential for body shop technicians and parts managers. Мы разберем всю Блок логики верхней решетки FAW в свой 3 отдельная минимальная обслуживаемая единица (МГУ) типы. Мы проанализируем “louver logic” of the main grille (МГУ 1), и критический “triple-seal logic” of its 12-piece gasket and lock-nut fastening system (МГУ 2 & 3).

МГУ 1: The “Louver & Filter Logic” of the Grille (5610010-А01) (The “дольше” Модуль)

The ‘Rear surround ventilation grille assy’ (5610010-А01) is the primary component and MSU of the Блок логики верхней решетки FAW. This is the visible, louvered panel that mounts to the cab’s rear bulkhead. Его “логика” is to manage airflow in all weather conditions.

1. The “Weatherproof” Louver Logic:

The most obvious feature is the set of fixed, angled louvers (slats). Этот “louver logic” is a classic piece of passive engineering. The slats are angled downwards, creating a barrier that is “open” to air but “closed” to the elements.

This design allows the Блок логики верхней решетки FAW to function as a high-volume air intake or exhaust, while physically preventing rain, снег, and road spray from being ingested into the cab. This is critical for protecting the HVAC system and preventing water leaks.

2. The “Фильтрация” Логика (The Mesh):

Located just behind the louvers, а Блок логики верхней решетки FAW features an integrated, fine-gauge screen or “coarse filter mesh.” This mesh’s “логика” is to act as the *first stage* of air filtration.

It is designed to block large-particle debris—such as leaves, insects, plastic bag fragments, and heavy grit—from being sucked into the HVAC system. Этот “pre-filter logic” имеет важное значение. It protects the much finer, more expensive, and harder-to-service paper “Cabin Air Filter” from becoming prematurely clogged, ensuring consistent airflow for the driver.

3. The “Материал & Структурный” Логика:

This component is not metal. It is molded from high-impact, UV-stabilized, automotive-grade polymer (like ABS or PP). This material “логика” is chosen for several key reasons:

• Corrosion-Proof: Это 100% immune to the rust and corrosion that would plague a metal grille.
• Impact Resistance: It can absorb minor impacts (from tree branches or freight) and flex, whereas a metal grille would dent and deform permanently.
• UV Stability: The plastic contains UV inhibitors to prevent the sun from making it brittle or fading its color.
• Acoustics: The solid polymer is “акустически мертвый” и, when combined with the gasket system, helps dampen noise and prevent rattles.

4. Удобство обслуживания (МГУ):

The ‘Rear surround ventilation grille assy’ is a single, non-repairable MSU. The louvers and mesh are permanently bonded into the frame. Failure is almost always due to physical impact (НАПРИМЕР., a driver misjudging the trailer swing, and the corner of the trailer crushing the grille). In this event, the technician removes the six lock nuts (МГУ 2) and replaces the entire grille assembly.

Основной 2: The “Triple-Seal” Fastening Logic (МГУ 2 & 3)

Это “установка” и “уплотнение” system for the Блок логики верхней решетки FAW. It consists of 12 total pieces (6 орехи, 6 прокладки) that create a high-performance, vibration-proof seal.

The “логика” is a 6-point mounting system, which implies the grille (МГУ 1) has six integrated studs that pass *through* holes in the cab’s metal bulkhead.

МГУ 3: ‘Ventilation grille sealing gasket’ (5610011-А02) – Кол-во 6

Это “sealing logic.” These six gaskets are the most critical part of the installation. They are made from high-grade EPDM rubber. Их “логика” is twofold:

• Water/Dust Seal: The gasket is placed on the stud *first* and is compressed between the grille and the cab’s metal wall. This creates a positive, 360-degree seal around the mounting hole, making it 100% waterproof and dust-proof.
• Vibration Damper (ШВХ): This rubber gasket provides a “логика” of isolation. It creates a soft buffer, preventing the plastic grille from making hard contact with the vibrating metal cab. Это “anti-rattle” логика.

МГУ 2: ‘Hexagon head flange lock nut’ (Q032605) – Кол-во 6

Это “fastening logic.” These six nuts are what hold the entire Блок логики верхней решетки FAW на месте. They are not standard nuts.

Они есть “flange lock nuts.”

• Фланец: The “фланец” acts as a built-in, wide-diameter washer. Этот “логика” distributes the clamping force, preventing the nut from pulling through the mounting hole or cracking the gasket.
• Lock: This is a “Найлок” (nylon insert) or prevailing-torque lock nut. The “логика” of the nylon insert is to bind to the threads, creating powerful friction that makes the nut *immune to vibration*.

Услуга & Failure Logic of the 3-Part System

The “логика” of this 3-part system (Grille, Прокладки, Орехи) dictates its service.

Режим отказа: Water Leaks

The most common “логика” of failure for this assembly is an improper installation. A technician, during a repair, may be tempted to re-use the old MSUs.

Re-using the ‘Sealing gaskets’ (МГУ 3) is a critical error. The old gaskets are “compression set”—they have been flattened and hardened by time and pressure. They will not create a new, waterproof seal. This allows water to leak *past* the stud and *into* the cab’s rear wall, saturating the ‘Soundproofing Pad’ (Сборка 623), which leads to mold and rust.

Режим отказа: Rattling / Lost Grille

The second “логика” of failure is re-using the ‘Lock nuts’ (МГУ 2). A Nyloc nut is **strictly a single-use item**. Once it is removed, the nylon insert is stripped and provides *zero* anti-vibration locking.

A re-used nut *will* vibrate loose. This will cause the Блок логики верхней решетки FAW to rattle, и в конце концов, the nuts will fall off, leading to the entire grille detaching from the vehicle at highway speed.

Correct Service Logic:

When replacing a damaged ‘Rear air vent assy’ (МГУ 1), the technician *must* also use a new set of six (6) ‘Sealing gaskets’ (МГУ 3) and six (6) ‘Flange lock nuts’ (МГУ 2) to guarantee a safe, silent, and waterproof repair.

FAW Upper Grille Logic Assembly Parts List

В следующей таблице представлена ​​полная, подробная разбивка всех 3 типы компонентов, указанные в Блок логики верхней решетки FAW for the FAW CA4251P66K24T1A3E5 tractor.

Технические характеристики

Технические характеристики Блок логики верхней решетки FAW are defined by its function as a sealed, filtered, and weatherproof ventilation port for the cab.