Клапаны ФАВ, Шланги и фитинги в сборе: Комплексное внимание к 24 Критические пневматические детали

Добро пожаловать в это подробное техническое руководство по Клапаны ФАВ, Шланги и фитинги в сборе, the complete pneumatic control “логика” system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This system is the “мозги” который контролирует “мышца” of the transmission’s range shifter.

The Клапаны ФАВ, Шланги и фитинги в сборе are a critical, chassis-mounted system. It is responsible for taking the driver’s electronic “high/low range” команда, passing it through a set of electro-pneumatic valves, and then routing high-pressure air through a specific set of hoses to the transmission’s sub-box shift cylinder.

Это подробное руководство является важным ресурсом для профессиональных технических специалистов и специалистов по запчастям.. Мы разберем всю Клапаны ФАВ, Шланги и фитинги в сборе систему в свою 24 исправные компоненты, including the main control valves, the air filter, the high/low gear hoses, and all the brackets and fittings.

The “Brains”: Control Valves (1702355AA9P & 1702255AA9P)

The “логика” принадлежащий Клапаны ФАВ, Шланги и фитинги в сборе resides in its main control valves. The parts list identifies a ‘Pneumatic directional valve’ (1702355AA9P) and a ‘Control valve assembly’ (1702255AA9P). These are the electro-pneumatic “logic gates” системы.

These valves are effectively electronic solenoids. When the driver flips the range selector switch (from Low to High), a low-voltage electrical signal is sent to these valves. This signal energizes an electromagnet, which pulls a “spool” или “poppet” valve open. This action, по очереди, releases high-pressure (100+ пси) air from the truck’s main air system and directs it into a specific port.

Это “логика”: a small electrical signal from the driver is used to control a large, powerful pneumatic force. These valves are the heart of the Клапаны ФАВ, Шланги и фитинги в сборе. They are sealed to their mounting bracket by the ‘Gasket-control valve’ (1702281AA9P), which is a critical seal. A leak here will cause the system to lose air pressure and fail to shift. A failure in the electronic solenoid will also render the Клапаны ФАВ, Шланги и фитинги в сборе неоперабельный.

The “Piping”: Высокий & Low Gear Hoses (1702431AA9P / 1702441AA9P)

Once the control valves have directed the air, а “Шланги” component of the Клапаны ФАВ, Шланги и фитинги в сборе takes over. The parts list specifically calls out an ‘Intake hose-low gear’ (1702431AA9P) and an ‘Intake hose-high gear’ (1702441AA9P).

These two hoses are the primary “приведение” lines. The “low gear” hose connects to the “толкать” side of the transmission’s shift cylinder, и “high gear” hose connects to the “тянуть” сторона (или наоборот). When the control valve sends air down the ‘Intake hose-high gear’, it pressurizes the cylinder, physically moving the shift fork and engaging the high-range synchronizer.

These are part of a larger network of ‘Intake hoses’ (1702451AA9P, 1702421AA9P, 1702411AA9P) and ‘Elbow joints’ / ‘Pipe joints’ (1702245AA9P, 1702365AA9P, 1702265AA9P, 1702235AA9P, 1702295AA9P). This entire pneumatic “трубопровод” system is the muscle of the Клапаны ФАВ, Шланги и фитинги в сборе.

A crack, расколоть, or loose fitting in any of these high-pressure hoses is a critical failure. It will create a high-pressure air leak, which not only prevents the transmission from shifting ranges but also puts a constant, parasitic drain on the truck’s main air brake system, which is a major safety hazard. The integrity of every component in the Клапаны ФАВ, Шланги и фитинги в сборе жизненно важно.

The “Lungs”: Воздушный фильтр (1702380-A7G) & Breathers (1702165-А8Л)

The pneumatic valves in the Клапаны ФАВ, Шланги и фитинги в сборе are high-precision components with very tight tolerances. They cannot be fed the “raw” air from the main tanks, which often contains small amounts of rust, влага, and compressor oil.

The ‘Air filter & joint assembly’ (1702380-A7G) это “легкое” системы. This is a final, in-line “polishing” фильтр. It is placed just before the control valves to trap any fine debris or moisture, protecting the solenoids from sticking or failing. This small filter is a key part of the Клапаны ФАВ, Шланги и фитинги в сборе‘ long-term reliability.

Наоборот, the two ‘Breather plug assembly’ (1702165-А8Л) units are the “exhaust” порты. When the driver shifts from “Высокий” к “Низкий,” the high-pressure air in the “Высокий” hose must be vented *out* to allow the piston to move. These breathers allow the air to escape quickly and silently, while their internal filters prevent dirt and water from being ingested back into the clean side of the Клапаны ФАВ, Шланги и фитинги в сборе.

The “Fittings”: Кронштейны, Зажимы, and Hardware

The “Fittings” portion of the Клапаны ФАВ, Шланги и фитинги в сборе refers to the complete mounting system. The ‘Welded bracket assembly’ (1702385AA9P) is the main structural foundation. It is a heavy-gauge steel bracket that bolts to the transmission housing or chassis. This bracket provides a rigid, secure platform to mount the control valves and filters.

Этот кронштейн, and all its associated plumbing, is secured with high-tensile fasteners designed to resist vibration. This includes ‘Hex flange bolts’ (Q1841020, Q1840660S), ‘Hex head bolts’ (CQ1500435), ‘Inner hex socket head cap screws’ (Q02180620), and ‘Light spring gaskets’ (Q40404, Q40406).

Окончательно, the hoses are secured with ‘Worm Drive Hose Clamps’ (CQ67622B, CQ67640B) and ‘Hose clamps’ (1702391-A7G). These are critical for creating an air-tight seal at all “push-on” hose connections. A single loose clamp will cause the entire Клапаны ФАВ, Шланги и фитинги в сборе to fail. This robust hardware is what makes the Клапаны ФАВ, Шланги и фитинги в сборе a durable, truck-grade system.

Клапаны ФАВ, Hoses And Fittings Assemblies Parts List (1/2)

В следующей таблице представлена ​​полная, подробная разбивка всех 24 components for the Клапаны ФАВ, Шланги и фитинги в сборе.

Технические характеристики и контекст сборки

Технические характеристики Клапаны ФАВ, Шланги и фитинги в сборе are defined by its function as the pneumatic control system for the transmission’s range shifter. The Клапаны ФАВ, Шланги и фитинги в сборе system is a critical logic controller.