FAW Transmission Control Logic Assembly: Um foco abrangente em 50 Componentes que podem ser reparados

Bem-vindo a este guia técnico abrangente sobre o FAW Transmission Control Logic Assembly (without PTO). Este é o completo, multi-part driver interface and linkage system for the manual transmission in the FAW Jiefang CA4251P66K24T1A3E5 6×4 trator semirreboque diesel.

O FAW Transmission Control Logic Assembly is the entire “deslocador” sistema, responsible for translating the driver’s hand movements into precise, mechanical gear selection inside the gearbox. It includes the in-cab ‘Transmission control handle’ (1703025A91W-C00), the ‘Transmission control rod’ (1703021A61B), and the extensive network of linkages, Suportes, and pneumatic pipes that connect the cab to the transmission.

This in-depth guide is a critical resource for professional technicians and fleet managers. Vamos desconstruir todo FAW Transmission Control Logic Assembly em seu 50 componentes reparáveis, detailing the function of the in-cab shifter, the critical floor seal, the vibration-damping “soft pad” sistema, the pneumatic range-shifter pipes, and the final mechanical linkages.

The Driver Interface: Shifter Handle and Ball Joint

O FAW Transmission Control Logic Assembly begins inside the cab. The ‘Transmission control handle & gear plate assy’ (1703025A91W-C00) is the component the driver holds. This assembly includes the gear knob (with the shift pattern) and the upper rod, ou “stick.”

This stick pivots on a ‘Ball pin-transmission control rod’ (1703013C70A). This precision-machined ball joint is the heart of the shifter’s “feel.” It is housed within a ‘Bushing’ (1703011C70A) and ‘Rear gasket’ (1703012C70A) to provide a smooth, low-friction pivot point.

This entire joint is protected from cab-side dust and spills by the ‘Ball pin cover’ (1703016C70A) and the ‘Sealing cover-transmission control rod’ (1703018C70A), which is held in place by a ‘Clamping spring’ (1703019C70A). This sealed, precise joint is the first stage in the FAW Transmission Control Logic Assembly, translating the driver’s “Padrão H” movements into precise fore-aft and side-to-side motion.

Cab Sealing: The Floor Seal and Dust Cover System

A critical part of the FAW Transmission Control Logic Assembly é o “cab-floor interface.” This is a complex seal designed to completely isolate the driver’s cab from the noise, fumaça, aquecer, and road grime of the chassis below.

This system is centered on the ‘Sealing seat assy-cab floor’ (1703030-61B). Este é um grande, molded rubber boot or “seat” that creates the main seal against the cab’s floor pan. It is secured by a ‘Buckle-sealing seat assy’ (1703036A70A).

Esse “seat” protects a dual-layer ‘Dust cover’ sistema. The ‘Upper dust cover’ (1703041-61B) and ‘Lower dust cover’ (1703046-61B) form a “bellows” that can flex as the shifter moves. These are held in place by the ‘Upper support plate’ (1703061A70A), ‘Lower support plate’ (1703060-61C), and their respective ‘Buckles’ (1703043A70A, 1703048A70A). A tear in this boot system is a major issue, leading to a loud, quente, and fume-filled cab. This sealing system is a vital, non-mechanical part of the FAW Transmission Control Logic Assembly.

Vibration Isolation: O “Soft Pad” Sistema de amortecimento

The transmission and engine vibrate intensely, while the cab is “air-ride” ou “rubber-mounted” to be still. O FAW Transmission Control Logic Assembly must bridge this gap without transferring the vibration to the driver’s hand. This is achieved with a sophisticated “soft pad” damping system.

The parts list calls for eight ‘Soft pad seat’ (1703076A70A), eight ‘Soft pad’ (1703077A70A), and eight ‘Gasket’ (1703079A70A) unidades. These components create eight complete rubber “shock absorbers.” They are used to mount the ‘Transmission control rod bracket’ (1703071-91C) para o chassi.

The ‘Sleeve-transmission control rod upper bracket’ (1703078-74A) units act as steel cores for these mounts. This entire sub-assembly “floats” the shifter bracket on these 8 rubber pads, completely isolating the ‘Transmission control rod’ (1703021A61B) from high-frequency “buzzing.” The ‘Soft pad assy-transmission control rod’ (1703085-61B) provides further damping, garantindo o FAW Transmission Control Logic Assembly feels solid and comfortable, not like a vibrating piece of machinery.

Pneumatic Logic: The Range/Splitter Control Piping

Esse FAW Transmission Control Logic Assembly controls a 12-speed (ou mais) transmissão, which requires a “faixa” ou “divisor” seleção. This is not done mechanically, but pneumatically (with air). The ‘Transmission control pipe bundle assy’ (1703330-99A) is a set of pre-bent, color-coded air lines.

When the driver flips the range-selector switch on the gear knob, it sends an electrical signal to a solenoid valve block (veja montagem 155). That block then sends high-pressure air through this ‘Pipe bundle’ to the ‘FAW Auxiliary Cylinder Assembly’ (veja montagem 168), which physically shifts the sub-box.

The ‘Intake pipe assy-transmission’ (1703640-52C) and ‘Terminal-type pipe joint assy’ (1703610-1500) are the main “supply” lines that feed compressed air into this control system. A leak in any of these air lines is a critical failure of the FAW Transmission Control Logic Assembly, as it will leave the driver unable to select half of their gears (Por exemplo, stuck in “Low Range”).

The Mechanical Linkage: Rods, Arms, and Brackets

The final part of the FAW Transmission Control Logic Assembly is the set of heavy-duty rods that create the final mechanical connection. The ‘Transmission control longitudinal rod with connector assy’ (1703095-91C) é o principal “push-pull” rod that connects the in-cab shifter to the transmission.

This rod actuates the ‘Rear joint assy-transmission control arm’ (1703145A70A), which is the lever that physically enters the transmission’s “top cover” (veja montagem 153). This connection is made via the ‘Fixed arm connecting rod & conjunto conjunto’ (1703110-56A).

These rods are held in place and guided by various brackets, including the ‘Main wiring harness bracket’ (3724426-68V), which doubles as a support. The bushings (‘Sleeve’ 1703081A92W, 1703082-61B, 1703083-61B) são críticos, as they prevent “slop” ou “play” in the linkage, ensuring a precise and confident gear shift. O inteiro FAW Transmission Control Logic Assembly is a precision system from start to finish.

FAW Transmission Control Logic Assembly Parts List (1/2)

The following table provides the first 25 componentes para o FAW Transmission Control Logic Assembly diagrama para o trator FAW CA4251P66K24T1A3E5.

FAW Transmission Control Logic Assembly Parts List (2/2)

Esta tabela detalha os componentes restantes para o FAW Transmission Control Logic Assembly, focusing on the external linkages and pneumatic controls.

Especificações Técnicas e Contexto de Montagem

As especificações para o FAW Transmission Control Logic Assembly are defined by its complex function as a vibration-damped, pneumatically-assisted, mechanical shift linkage. O FAW Transmission Control Logic Assembly connects the cab to the gearbox.