Блок управления наклоном кабины FAW: The 2-in-1 “Dual-Logic” Система полного доступа в кабину

Welcome to this in-depth technical breakdown of the Блок управления наклоном кабины FAW. This is the complete hydraulic and electric assembly responsible for lifting the entire cab-over-engine on the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This is one of the most critical safety and maintenance systems on the vehicle, as its “логика” is to provide technicians with safe, reliable access to the engine and transmission.

The “Логическая сборка” designation for the Блок управления наклоном кабины FAW является ключевым. This is not one system, но “двойная логика” или “hybrid” система. It combines a primary ‘Electric pump assy’ (5002075B91W-C00) for effortless, push-button operation, with a secondary, “backup” ‘Manual pump assy’ (5002070B91W-C00). This built-in redundancy is a critical safety “логика,” ensuring that a technician can *always* lift the cab, even if the truck’s battery is dead.

This expert guide is an essential resource for technicians and fleet operators. Мы разберем всю Блок управления наклоном кабины FAW в свой 23 типы компонентов. Мы проанализируем “Electric Logic” (the motor, pump, and relay), а “Manual Logic” (the hand pump and switch), the shared “Hydraulic Network” (the hoses), и “Fastening Logic” (the critical anti-vibration hardware).

Основной 1: The “Electric Logic” Система (МГУ 19-22)

This is the primary, convenience-focused part of the Блок управления наклоном кабины FAW. This system allows the driver or technician to lift the cab by simply pressing the ‘Hydraulic cab tilt switch assy’ (3735080-А01) inside the cab.

1. ‘Electric pump assy’ (5002075B91W-C00): Это “мозг и мышцы” of the electric system. This MSU is an integrated unit that combines the hydraulic pump and the electric motor into one assembly.

2. ‘Electric pump motor’ (5002180AA01-C00): This is the high-torque, 24V DC motor that drives the pump. Его “логика” is to provide high power for a short, intermittent duration. It draws a massive amount of current, which is why it cannot be wired directly to the dashboard switch.

3. ‘Electric pump relay assy’ (5002190B91W-C00): Это “логика” that makes the system safe. The in-cab switch (3735080-А01) sends a small, low-amperage signal to this relay. This relay (a heavy-duty solenoid) then closes, handling the massive, high-amperage current needed by the motor. This protects the cab’s wiring from melting. This relay is a critical MSU.

4. ‘Electric pump shield assy’ (5002185B91W-C00): This is the system’s “armor.” This MSU protects the entire electric pump assembly from road debris, water spray, and ice. A missing shield is a common cause of premature motor corrosion and failure.

Основной 2: The “Manual Logic” Backup System (МГУ 1-4)

Это “redundancy logic” built into the Блок управления наклоном кабины FAW. This system ensures that even with a dead battery, a failed motor, or a blown relay, the cab can still be lifted for service.

1. ‘Manual pump – cab lift’ (5002070B91W-C00): This is the core of the manual system. It is a hydraulic hand pump, similar to a bottle jack. The technician inserts the truck’s jack handle (from the tool kit) into this pump’s socket and manually pumps it to raise the cab.

2. ‘Manual switch bracket assy’ (5002120B91W): This bracket holds the manual pump. More importantly, it holds the “changeover switch” или “selector valve.” The “логика” is that a technician must *first* turn this valve (often with the same jack handle) to change the hydraulic circuit from “electric mode” к “manual mode.” This prevents the manual pump from trying to push fluid “backwards” through the electric pump.

3. «Прокладка’ (5002133B91W): This MSU provides the critical seal between the manual pump and its mounting bracket, preventing hydraulic fluid leaks under high pressure.

Основной 3: The “Dual-Logic” Hydraulic Network (МГУ 8-13)

This group of MSUs is the “сантехника” принадлежащий Блок управления наклоном кабины FAW. These high-pressure hydraulic hoses are the arteries that connect *both* pumps to the main tilt cylinder.

1. The 3-Way Logic: ‘Hose assy – connect pump to 3-way joint’ (5002085B91W-C00)

Это “логика” that allows the dual-pump system to work. The “3-way joint” (or a T-junction) is the point where the fluid line from the electric pump and the fluid line from the manual pump *meet*. From this junction, a single line then proceeds to the main tilt cylinder. This hose is the MSU that makes this “combined” logic possible.

2. The “Push/Pull” Логика: (МГУ 11 & 12)

The system uses a dual-action cylinder, which requires two hoses:

• ‘Hose assy – hydraulic cylinder push oil port’ (5002080B91W-C00): Это “lift” линия. The pumps push high-pressure fluid through this hose to *extend* the cylinder and lift the cab.
• ‘Hose assy – hydraulic cylinder pull oil port’ (5002100B91W-C00): Это “lower” линия. To lower the cab, the changeover valve is opened, allowing the cab’s weight to push fluid *out* of the cylinder and back to the reservoir through this hose.

3. Защита & Маршрутизация (МГУ 13, 16, 17):

These are the critical, often-overlooked MSUs. A ‘Deflector plate’ (5002141B91W) and ‘Shield-hydraulic oil pipe’ (5002146B91W) protect these vital hoses from road debris, stone chips, and high heat from the exhaust. A ‘Rubber seal’ (3724032-50А) protects a hose as it passes through a chassis member. A failure of these protective MSUs leads to a chafed, burst hose, что такое #1 failure point for any hydraulic system.

Основной 4: The “Антивибрационный” Логика крепления (МГУ 5, 6, 14, 15, 18)

Весь Блок управления наклоном кабины FAW is subject to massive vibration. The fastener system is not just hardware; it is an engineered “антивибрационный” logic to prevent the pumps from shaking themselves loose.

«Комбинированный болт’ (CQ1461035, CQ1460825, CQ1460820): The parts list calls for a total of eight (8) of these. The “Комбинация” logic is the most important feature. These bolts have a *captive, предварительно установленная стопорная шайба* (either a spring washer or serrated head). This lock washer provides constant tension, making it physically impossible for the bolt to back out from vibration.

«Шестигранная гайка’ (CQ34008): These four nuts are used on the other side of the bolts (НАПРИМЕР., CQ1460820). Они высокопрочные, преобладающий крутящий момент “Найлок” орехи. Their nylon insert binds to the threads, providing a *second layer* of anti-vibration logic. This dual-system (lock washer + lock nut) is what ensures the Блок управления наклоном кабины FAW remains securely fastened for the life of the vehicle.

FAW Cab Tilt Control Unit Parts List

В следующей таблице представлена ​​полная, подробная разбивка всех 23 типы компонентов, указанные в Блок управления наклоном кабины FAW схема трактора FAW CA4251P66K24T1A3E5.

Технические характеристики и контекст сборки

Технические характеристики Блок управления наклоном кабины FAW are defined by its critical, dual-logic function. It combines a primary electric system for convenience and a manual backup system for safety and service redundancy.