- ChangChun City, Jilin Province, China
by 
This is a complete technical deconstruction of the FAW J6P Drive Axle Piping system for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This guide breaks down the 3 critical component types that form the pneumatic control lines for the tandem axle differential locks, a vital system for off-road traction.
The FAW J6P Drive Axle Piping assembly is a set of pre-formed hoses and fasteners that deliver compressed air to the differential lock actuators on both the middle and rear drive axles. Unlike hydraulic or electrical systems, this is a robust pneumatic system designed for reliability in harsh conditions. The function of the FAW J6P Drive Axle Piping is simple but critical: when the driver activates the diff lock switch, these pipes transmit the air pressure that mechanically locks the differentials, forcing the wheels to turn at the same speed. A leak or failure in this FAW J6P Drive Axle Piping system will render the differential locks inoperable, severely compromising the truck’s off-road capability.
This component is the dedicated air line for the rearmost axle in the tandem setup. Its integrity is essential for locking the final drive axle.
1. Component: ‘Air hose assy – rear wheel diff lock’ (2408205-80A) – Qty 1
This (Comp 1) is a pre-formed, flexible air hose assembly. The Pneumatic Logic is direct: this hose connects the chassis-mounted air valve (solenoid) to the air cylinder actuator on the rear axle differential (as seen in the FAW J6P Rear Axle breakdown).
Being an assembly, it includes the correct fittings at both ends, which are crimped on to prevent leaks under pressure. Its specific length and shape are designed to route safely around the moving suspension components and exhaust. A failure in this specific piece of the FAW J6P Drive Axle Piping system will result in the rear differential lock failing to engage.
This component is the parallel air line that controls the differential lock on the middle (or “forward”) axle of the tandem set.
1. Component: ‘Air hose assy – mid axle diff lock’ (2408225-76A) – Qty 1
This (Comp 2) is the second main component of the FAW J6P Drive Axle Piping system. It performs the exact same function as Component 1, but it is routed to the middle axle’s differential lock actuator.
The Tandem Control Logic of the 6×4 system relies on having two independent control lines. This allows the truck’s pneumatic system to engage the locks sequentially or all at once. This pre-formed hose assembly is also supplied with crimped fittings and is cut to the precise length needed to reach the middle axle, distinguishing it from the rear axle line. This entire FAW J6P Drive Axle Piping setup is designed for robust, independent control.
This group of components, while small, is critical to the lifespan of the entire FAW J6P Drive Axle Piping system. It ensures the air lines are properly secured and protected from the harsh operating environment.
1. Component: ‘Plastic strap’ (T67437676) & ‘Tie strap’ (3723011-81W-C00) – Qty 10 (Total)
This (Comp 3) is a set of 10 heavy-duty plastic straps. The Vibration Dampening Logic is essential. These straps are used to secure the air hoses (Comp 1 & 2) firmly to the truck’s frame rails and axle housings.
An unsecured hose in the FAW J6P Drive Axle Piping system would chafe against steel frame members or moving suspension parts. This chafing, combined with constant vibration, would quickly wear a hole in the air line, causing a critical air leak and a complete failure of the differential lock. These simple straps are non-negotiable for a reliable FAW J6P Drive Axle Piping installation.
The following table provides the complete, detailed breakdown of all 3 component types in the FAW J6P Drive Axle Piping assembly for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This system is critical for the function of the tandem-axle differential locks. This FAW J6P Drive Axle Piping is a simple but essential system.
| Mark | Part No. | Part Name | Quantity |
|---|---|---|---|
| 1 | 2408205-80A | Air hose assy – rear wheel diff lock | 1 |
| 2 | 2408225-76A | Air hose assy – mid axle diff lock | 1 |
| 3 | T67437676 / 3723011-81W-C00 | Plastic strap / Tie strap | 10 |
The specifications for this FAW J6P Drive Axle Piping system are defined by its function as the pneumatic control network for the tandem differential locks. The integrity of these lines is crucial for off-road performance. The entire FAW J6P Drive Axle Piping system must be leak-free.
| Vehicle Application | FAW Jiefang CA3250P66K2L1T1E 6×4 Dump Truck |
| System Group | FAW J6P Drive Axle Piping |
| Primary Logic | Pneumatic activation of differential locks |
| System Type | Compressed Air (Pneumatic) |
| Controlled Axles | Middle Axle and Rear Axle |
| Key Component 1 | ‘Air hose assy – rear wheel diff lock’ (2408205-80A) |
| Key Component 2 | ‘Air hose assy – mid axle diff lock’ (2408225-76A) |
| Fastening System | ‘Plastic strap’ (T67437676) / ‘Tie strap’ |
| Total Component Types | 3 |
| Associated System | Tandem Axle Differential Lock System. This FAW J6P Drive Axle Piping is the core of its activation. |
FAW parts, including the Cylinder Block Assembly, are packaged with care to ensure safe delivery. Each component is secured in protective materials to prevent damage during transit. The logistics network guarantees timely shipments worldwide, supporting efficient maintenance operations. Below is an image illustrating the standard packaging for FAW truck parts, showcasing the attention to detail in handling and storage.
This packaging approach minimizes the risk of corrosion or impact damage, ensuring that parts like the FAW Cylinder Block Assembly arrive in perfect condition. Customers can rely on FAW’s logistics for consistent quality and reliability.
FAW is one of China’s oldest and largest automotive manufacturers, with registered capital of RMB 35.4 billion yuan and total assets of RMB 457.83 billion yuan.
CHINA FAW GROUP CO., LTD. (short for FAW), formerly China First Automobile Works, can trace its roots back to Jul 15, 1953, when its first assembly plant started to be constructed. FAW is one of China’s oldest and largest automotive manufacturers, with registered capital of RMB 35.4 billion yuan and total assets of RMB 457.83 billion yuan.
China heavy truck sales global “five in a row”, heavy truck sales global “six in a row”, tractor sales for 16 consecutive years absolute leading industry.
