Air Brake Power Supply Module: Deconstructing 49 Critical Parts for Flawless Pneumatic Safety

This is an in-depth technical guide to the Air Brake Power Supply Module for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This deconstruction analyzes 49 serviceable component types, including the air tanks, air dryer, protection valves, and mounting hardware that form the core of the vehicle’s pneumatic system.

The Air Brake Power Supply Module is the complete, integrated system responsible for generating, treating, storing, and distributing the compressed air required for the entire braking system. On a heavy-duty dump truck, this is the most critical safety system. It is not just one part, but a network of components, including the ‘Air Dryer’ (to remove moisture), multiple ‘Air Tanks’ (for storage), and the ‘Four-Circuit Protection Valve’ (for redundancy). This entire Air Brake Power Supply Module must be free of leaks, mounted securely, and serviced regularly to ensure the vehicle has reliable stopping power under all load conditions. This analysis will deconstruct the core serviceable units of the Air Brake Power Supply Module, from generation to storage and distribution.

Core 1: The “Generation & Treatment” Logic (The Air Dryer)

This group of components is the starting point of the Air Brake Power Supply Module. It takes hot, wet air from the engine’s compressor and “treats” it, making it clean and dry before sending it to the storage tanks.

1. Component: ‘Air dryer assy’ (3511020-73A) & ‘Air treatment unit’ (3515020-73A)
These (Comp 21, 22) are the core of the treatment system. The Air Treatment Logic is to remove moisture and oil from the compressed air. Wet, oily air will destroy the rubber seals in brake valves and can freeze in cold weather, leading to a catastrophic loss of brakes. This unit is a critical, serviceable part of the Air Brake Power Supply Module.

2. Component: ‘Bracket – air treatment unit’ (3515012-61B)
This (Comp 20) is the dedicated steel bracket that mounts the heavy air dryer assembly to the FAW J6P Frame. It is designed to withstand constant vibration.

3. Component: ‘Pipe assy’ (3506235-73A, 3506240-73A) & ‘Silencer assy’ (3515025-55A)
This (Comp 35, 36, 29) is the plumbing. The ‘Pipe assy’ (Comp 35, 36) are the multi-port manifolds that distribute the treated air. The ‘Silencer’ (Comp 29) is connected to the air dryer’s purge valve, muffling the loud “pssst” sound when the dryer purges its collected moisture. This is a key part of a properly functioning Air Brake Power Supply Module.

Core 2: The “Storage” Logic (The Air Tanks)

This group represents the various air reservoirs, or “tanks,” that store the compressed air. The Air Brake Power Supply Module uses multiple tanks for safety and redundancy.

1. Component: ‘Reserve air tank assy’ (3513020-70B) & ‘Air tank assy’ (3513015-61B)
This (Comp 5, 7) is the main set of air tanks. These steel reservoirs hold the “primary” and “secondary” air for the service brake circuits, as divided by the protection valve.

2. Component: ‘Dual-chamber air tank assy’ (3513215-54A) & ‘Partition air tank’ (3513411-50A)
This (Comp 30, 16) represents specialized tanks. The Redundancy Logic is that a ‘Dual-chamber’ tank (Comp 30) is a single tank with two isolated compartments inside. This is often used for the park brake, ensuring it has its own dedicated air supply that cannot be depleted by a service brake leak. This is a core feature of the Air Brake Power Supply Module.

3. Component: ‘Drain valve assy’ (3513100-240) – Qty 6 (Total)
This (Comp 8, 9) is the most critical service item. Every FAW J6P Reserve Air Tank (which is part of the Air Brake Power Supply Module) has a drain valve at the bottom. These must be opened daily to purge the condensed water, which is a byproduct of air compression. Failure to drain the tanks will lead to brake failure in cold weather.

Core 3: The “Distribution & Protection” Logic (Valves & Mounts)

This group includes the “brain” of the Air Brake Power Supply Module and the hardware that physically secures the tanks to the truck frame.

1. Component: ‘Four-circuit protection valve’ (3515014-8E) – Qty 3 (Total)
This (Comp 12, 27) is the central safety device. It receives the main air supply and splits it into four protected circuits (front brake, rear brake, park brake, accessory). The Protection Logic ensures that a leak in one circuit (e.g., a burst accessory line) cannot drain the entire system. This allows the brakes to remain functional, a critical feature of the Air Brake Power Supply Module.

2. Component: Tank Brackets & Straps (3513075-75A, 3513095-75A, 3513090-50A, etc.)
This (Comp 6, 7, 17, 18, 32) is the complete mounting system. The Vibration Logic is that air tanks are heavy and subject to constant vibration. This system of heavy-duty ‘Brackets’ (Comp 6, 31) and steel ‘Strap assy’ (Comp 7, 18, 32) holds the tanks securely to the FAW J6P Frame, preventing metal fatigue and stress cracks.

3. Component: ‘Air tank & battery box bracket assy’ (3513800-Y494)
This (Comp 5) is a large, integrated component that serves a dual purpose: it holds both an air tank for the Air Brake Power Supply Module and the vehicle’s batteries. This multi-function bracket, complete with ‘Battery box pad’ (Comp 34), is an example of efficient chassis design.

Air Brake Power Supply Module: Complete 49-Part Breakdown

The following table provides the complete, detailed breakdown of all 49 component groups in the Air Brake Power Supply Module for the FAW Jiefang CA3250P66K2L1T1E 6×4 dump truck. This list merges the auxiliary tank and main module diagrams and is essential for any service of the Air Brake Power Supply Module.

Core Specifications

The specifications for the Air Brake Power Supply Module are defined by its complex, multi-tank, and multi-circuit design, ensuring fail-safe operation. A leak-free Air Brake Power Supply Module is the most critical safety system on the vehicle.