- Ciudad de ChangChun, Provincia de Jilin, Porcelana
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Bienvenido a este análisis técnico experto del Conjunto de cilindro de cambio de caja secundaria FAW. Esta es la neumática completa. “músculo” y “lógica” system that actuates the high/low range splitter for the auxiliary “subcuadro” of the FAW Jiefang CA4251P66K24T1A3E5 6×4 tractor semirremolque diésel.
El Conjunto de cilindro de cambio de caja secundaria FAW is the component that physically moves the synchronizer fork to shift the transmission from its “bajo” range (for pulling heavy loads) to its “high” range (for highway cruising). It is powered by the truck’s main compressed air system and controlled by an electronic solenoid.
This in-depth guide is a critical resource for professional transmission technicians and fleet managers. Deconstruiremos todo Conjunto de cilindro de cambio de caja secundaria FAW en su 7 componentes reparables, including the main cylinder and shaft, the shift fork, the air fittings, and the critical locking hardware.
El corazón de la Conjunto de cilindro de cambio de caja secundaria FAW is the ‘Cylinder with fork shaft assembly-sub box’ (1701640BA9P). This is the main pneumatic actuator. This component is a high-reliability air cylinder, typically mounted to the side of the transmission’s rear housing.
Es “lógica” is simple but powerful. The cylinder contains an internal piston and a robust seal. Cuando el conductor voltea el “range selector” switch in the cab, an electronic solenoid (una parte separada) directs high-pressure air (100+ PSI) from the truck’s main air system into one of the ’90-degree elbow joint assembly’ (1701755-A8L) ports.
This blast of air slams the piston forward, moving the ‘Cylinder fork shaft assembly’ (1701640AA9P) that is attached to it. When the driver selects the other range, the solenoid vents the air from the first port and pressurizes the second port, slamming the piston and shaft in the opposite direction. This pneumatic “músculo” provides the several hundred pounds of force required to move the synchronizer. A failure of the internal piston seal in this Conjunto de cilindro de cambio de caja secundaria FAW will result in an air leak and a truck that is stuck in either high or low range.
The ‘Fork – sub-box synchronizer’ (1701632AA9P) is the mechanical link between the air cylinder and the gearbox internals. Este componente del Conjunto de cilindro de cambio de caja secundaria FAW es un trabajo pesado, forged steel “fork.”
It is attached to the end of the pneumatic ‘Cylinder fork shaft’. los dos “púas” of the fork ride in a deep groove on the “sliding sleeve” of the sub-box output shaft’s synchronizer. When the air cylinder moves the shaft, this fork moves with it, physically sliding the synchronizer hub to engage either the high-range or low-range gear set.
This fork is a high-wear, high-stress component. El “almohadilla” on the end of the fork tines are in constant, light contact with the spinning synchronizer sleeve. Over hundreds of thousands of shifts, these pads can wear down. Excessive wear will cause a “sloppy” cambio, incomplete gear engagement, o “popping out” of range. A cracked fork is a critical failure of the Conjunto de cilindro de cambio de caja secundaria FAW.
El Conjunto de cilindro de cambio de caja secundaria FAW is powered by air, requiring a leak-free plumbing system. The two ’90-degree elbow joint assembly-cylinder’ (1701755-A8L) fittings are the “inlet” y “salida” ports for the air cylinder.
These are high-pressure, threaded fittings that allow the air lines to be connected at a 90-degree angle, which is essential for routing hoses in the tight confines of the transmission tunnel. A leak in these fittings (or their seals) will not only cause the Conjunto de cilindro de cambio de caja secundaria FAW to become weak or unresponsive, but it will also create a parasitic leak on the truck’s main air brake system, forcing the air compressor to run more often and increasing the risk of a low-air situation.
The mounting hardware for the Conjunto de cilindro de cambio de caja secundaria FAW is designed for maximum security in a high-vibration environment. The ‘Hex flange bolts’ (Q1841040S) y 'Juntas de resorte’ (Q40310) are used to secure the main cylinder body to the transmission housing. The flange head and spring washer work together to prevent the bolts from vibrating loose.
Sin embargo, the most critical fasteners in this Conjunto de cilindro de cambio de caja secundaria FAW are the ‘Hex head bolt with hole’ (1701633-A7G) unidades. These two bolts are used for a “cannot-fail” conexión, such as securing the ‘Fork’ (1701632AA9P) to the ‘Cylinder fork shaft’ (1701640AA9P).
These bolts have a hole drilled through their heads. This is for the ‘Steel locking wire’ (1701578-A2K). This is a critical safety “lógica.” After the technician torques these bolts to the correct specification, this steel wire is threaded through the holes in both bolt heads and then twisted taut. Este “lock wire” makes it physically impossible for the bolts to rotate or back out from vibration. A missing lock wire is a sign of an incomplete repair and risks the entire Conjunto de cilindro de cambio de caja secundaria FAW failing.
La siguiente tabla proporciona la información completa, desglose detallado de todos 7 components identified in the ‘Sub-Box Shift Cylinder Assembly’ diagrama para el tractor FAW CA4251P66K24T1A3E5. El Conjunto de cilindro de cambio de caja secundaria FAW es el “músculo” for the transmission’s range selector.
| Marca | Número de pieza. | Nombre de la pieza | Cantidad |
|---|---|---|---|
| 1 | 1701632AA9P | Tenedor – sub-box synchronizer | 1 |
| 2 | 1701640AA9P | Cylinder fork shaft assembly-sub box | 1 |
| 1701640BA9P | Cylinder with fork shaft assembly-sub box | 1 | |
| 3 | 1701755-A8L | 90-Cilindro de conjunto de articulación de codo de grado | 2 |
| 4 | Q40310 | junta de resorte | 4 |
| 5 | Q1841040S | Perno de brida hexagonal, varilla gruesa (Tipo estándar) | 4 |
| 6 | 1701633-A7G | Hex head bolt with hole | 2 |
| 7 | 1701578-A2K | Steel locking wire | 1 |
Las especificaciones para el Conjunto de cilindro de cambio de caja secundaria FAW are defined by its function as a high-force, pneumatic actuator for the transmission’s range selector. El Conjunto de cilindro de cambio de caja secundaria FAW is a safety-critical part.
| Solicitud de vehículo | FAW Jiefang CA4251P66K24T1A3E5 6×4 Tractor |
| Grupo de componentes | Conjunto de cilindro de cambio de caja secundaria FAW |
| Actuation Type | Neumático (Compressed Air) |
| Control System | ECU-Controlled Solenoid Valve |
| Main Cylinder Assembly | 1incógnita (Número de pieza. 1701640BA9P) |
| Enlace mecánico | 1x Shift Fork (1701632AA9P) |
| Air Ports | 2x 90-Degree Elbow Joints (1701755-A8L) |
| Safety Feature | 1x Steel Locking Wire (1701578-A2K) |
| Sujetadores críticos | 2x Bolts with Hole (1701633-A7G) |
| Función primaria | Provides the physical force to shift the transmission’s auxiliary “subcuadro” between High and Low range. |
piezas FAW, incluido el conjunto del bloque de cilindros, Se empaquetan con cuidado para garantizar una entrega segura.. Cada componente está asegurado con materiales protectores para evitar daños durante el transporte.. La red logística garantiza envíos puntuales en todo el mundo., apoyando operaciones de mantenimiento eficientes. A continuación se muestra una imagen que ilustra el embalaje estándar de las piezas de camiones FAW., mostrando la atención al detalle en el manejo y almacenamiento.
Este enfoque de embalaje minimiza el riesgo de corrosión o daños por impacto., asegurando que piezas como el conjunto de bloque de cilindros FAW lleguen en perfectas condiciones. Los clientes pueden confiar en la logística de FAW para obtener calidad y confiabilidad constantes.
FAW es uno de los fabricantes de automóviles más grandes y antiguos de China, con capital registrado de RMB 35.4 mil millones de yuanes y activos totales de RMB 457.83 mil millones de yuanes.
CHINA FAW GROUP CO., LIMITADO. (abreviatura de FAW), anteriormente China First Automobile Works, puede rastrear sus raíces hasta julio 15, 1953, cuando comenzó a construirse su primera planta de ensamblaje. FAW es uno de los fabricantes de automóviles más grandes y antiguos de China, con capital registrado de RMB 35.4 mil millones de yuanes y activos totales de RMB 457.83 mil millones de yuanes.
Ventas globales de camiones pesados en China “cinco seguidos”, ventas de camiones pesados a nivel mundial “seis seguidos”, venta de tractores para 16 años consecutivos líder absoluto en la industria.
