Тормозная магистраль FAW: Деконструкция 56 Критически важные компоненты, обеспечивающие вашу безопасность

Добро пожаловать в это важное техническое руководство по Тормозная магистраль FAW система (Сборка 539). Это полный, multi-circuit, high-pressure pneumatic braking and control system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This assembly is arguably the most critical safety system on the entire vehicle.

The Тормозная магистраль FAW это не одна часть, но комплекс “логика” network of valves, шланги, трубы, датчики, and brackets. Its function is to take the compressed air from the air compressor and distribute it on demand to the service brakes (foot pedal), стояночные тормоза (hand valve), and trailer brake circuits. Этот “air-over-mechanical” logic provides the immense stopping power required for a fully-loaded tractor-trailer.

Это подробное руководство является важным ресурсом для профессиональных технических специалистов по шасси и специалистов по запчастям.. Мы разберем всю Тормозная магистраль FAW систему в свою 56 исправные компоненты, including the ‘Air dryer’ (3511020-81W-C00), ‘Air processing unit’ (3515020-81W-C00), ‘ABS solenoid valve’ (3550310-50А), and all the critical hoses, арматура, and brackets that make the system function.

The “Логика” of a Pneumatic FAW Brake Line

The Тормозная магистраль FAW system is pneumatic (air-powered), not hydraulic like a passenger car. Это критический дизайн “логика” for heavy-duty trucks. Первый, air pressure provides far more stopping force than hydraulic pressure can, which is essential for a 40-ton vehicle. Второй, the system is “fail-safe.” A hydraulic leak results in total brake failure. A leak in a pneumatic Тормозная магистраль FAW will cause the spring-brakes (стояночные тормоза) to automatically engage, safely stopping the truck.

This logic is managed by two core components:

• **’Air dryer assembly’ (3511020-81W-C00):** Это “легкое” принадлежащий Тормозная магистраль FAW. It takes hot, wet air from the compressor and “сохнет” it by passing it through a desiccant filter. This is a critical first step, as any moisture in the system would freeze in cold weather, blocking the valves and causing total brake failure.
• **’Air processing unit (APU)’ (3515020-81W-C00):** Это “мозг.” It is a central distribution manifold. It takes the clean, dry air and splits it into multiple, redundant circuits (НАПРИМЕР., передние тормоза, задние тормоза, trailer brakes, parking brake). This ensures that a failure in one Тормозная магистраль FAW схема (like a blown hose) will not cause a total loss of stopping power.

The “Электронная логика”: ABS and Solenoids

The modern Тормозная магистраль FAW system is not just pneumatic; it is electro-pneumatic. The ‘Anti-lock brake solenoid valve assembly’ (3550310-50А) is the electronic interface. This valve block receives high-speed commands (hundreds of times per second) from the truck’s ABS computer.

When the driver panic-stops and a wheel begins to lock up (as detected by the wheel speed sensors), the ABS computer instantly commands this solenoid. The solenoid then rapidly “насос” the air pressure to that specific wheel’s brake chamber, releasing and reapplying the brake much faster than any human could. Это “anti-lock” logic that allows the driver to maintain steering control during a panic stop.

This system also includes the ‘Hand brake valve with protective cover assy’ (3508015-91W-C00) and ‘Foot brake valve & clutch plate assy’ (3504020-91Вт). These are the driver’s primary inputs, translating foot and hand movement into proportional air pressure signals. The Тормозная магистраль FAW is a complex integration of mechanical, пневматический, and electronic logic.

The “Lines”: Шланги, Pipes, and Bundles

The “Line” часть Тормозная магистраль FAW keyword refers to the physical “arteries” that carry the compressed air. This is a combination of rigid pipes and flexible hoses.

**Шланги:** The ‘Brake flexible hose-front brake’ (3506030-60А & 3506040-1051) and ‘Control flexible hose-front brake’ (3506040-1051) are used at the “wheel ends.” Это критический момент “логика” выбор, as these flexible, wire-braided hoses must be able to withstand 120+ PSI of pressure while constantly flexing and turning with the front steering wheels. A cracked or abraded hose is a common failure point in any Тормозная магистраль FAW система.

**Pipes & Bundles:** «Передняя воздухопроводная трубка в сборе»’ (3506205-91Вт), ‘Pipe bundle assy’ (3506100-92Вт), and ‘Air compressor air pipe assy’ (3506210A91W) are the main rigid lines. These are typically pre-bent nylon or steel tubes that run along the chassis frame. They are bundled together for protection and ease of installation. А “bundle” is a key part of the Тормозная магистраль FAW логика, as it keeps the critical, color-coded lines organized and protected from road debris.

Кронштейны, Fittings, and Support Structure

А Тормозная магистраль FAW system is under constant vibration. Его “логика” requires that it be rigidly mounted to the chassis to prevent fatigue and failure. This parts list details an extensive support system:

• ‘Front pipe bundle bracket’ (3506038-91Вт, 3506430-91Вт)
• ‘Bracket-hand brake valve’ (3522012-91Вт)
• ‘Bracket-air processing unit’ (3515021-91Вт)
• ‘Transition bracket-air storage module’ (3513824-91Вт)
• ‘Main wiring harness bracket’ (3724426-68В) (shared bracket)

The ‘Fittings’ are the dozens of small, but critical, разъемы. This includes ‘Grommets’ (3506204-50А), ‘Multi-way joints’ (3506404-50А), «Вилки’ (3506407-1500), and numerous ‘Sealing rings’ (3515416-81W-C00, 3513403-1500, 3506413-1500, и т. д.). Each one of these is a potential leak point. The “логика” принадлежащий Тормозная магистраль FAW is to use high-quality, O-ring-sealed (grommet-type) fittings to ensure a leak-free system. A leaking fitting is a critical, “vehicle-down” отказ.

Весь Тормозная магистраль FAW is fastened with hundreds of high-tensile, виброустойчивые крепления, including ‘Hex flange bolts’ (Q1841445T) и контргайки с шестигранной головкой для фланца’ (CQ32614), to ensure total system integrity.

FAW Brake Line Parts List (1/2)

В следующей таблице представлена ​​первая часть подробной разбивки по Тормозная магистраль FAW (539) схема трактора FAW CA4251P66K24T1A3E5.

FAW Brake Line Parts List (2/2)

В этой таблице подробно описаны остальные компоненты для Тормозная магистраль FAW (539) диаграмма.

Технические характеристики и контекст сборки

Технические характеристики Тормозная магистраль FAW system are defined by its function as a complete, multi-circuit, high-pressure pneumatic system. The Тормозная магистраль FAW is a safety-critical system for vehicle control.