The part is a pneumatic control system designed for the dual rear axles of the HOWO A7 8X4, featuring relay valves, tubing, and mounting hardware. This Steyr doubel axle brake device ensures coordinated braking between the two rear axles, improving stability and stopping performance. Built to Steyr design principles, this Steyr doubel axle brake device integrates high‑quality relay valves, precision fittings, and durable plastic fastening belts for reliable operation under heavy loads.
At howo Parts, we supply the genuine Steyr doubel axle brake device assembly that meets OEM standards. Our Steyr doubel axle brake device includes relay valves, brackets, spring components, clamps, nut bases, various angled and T‑shaped joints, polyamide tubes, and fastening belts – all engineered to provide leak‑free operation and consistent brake response.
Proper brake control is essential for safe operation, and The part ensures that both rear axles receive balanced air pressure. Regular inspection and timely replacement of Steyr doubel axle brake device components will prevent brake imbalance, air leaks, and uneven tyre wear. Trust our Steyr doubel axle brake device to keep your HOWO A7 8X4 stopping with confidence for millions of kilometres.
This schematic diagram illustrates the pneumatic circuit for the dual rear axle, including the cast beam layout. It serves as a reference for understanding the air flow paths in The part.
The Relay valve is a key component that amplifies the control signal from the brake pedal, providing rapid air delivery to the brake chambers on the rear axles. This valve is central to the responsiveness of The part.
This is a premium relay valve manufactured by WABCO, known for its precision and durability. It provides superior performance and is a direct fit for The part, offering consistent brake response.
Standard hex bolts are used to secure the relay valves and brackets in The part. Their zinc‑plated finish provides corrosion resistance and reliable clamping force.
Flat washers are used under bolt heads and nuts to distribute load and protect surfaces in The part, ensuring even clamping pressure.
Spring washers are split‑ring lock washers that prevent fasteners from loosening due to vibration, a critical feature for The part.
Hex nuts are used with bolts to secure components of The part. They provide reliable clamping and are easily torqued with standard tools.
A type 1 hex nut, standard metric, used for general fastening in The part.
An elastomeric vibration isolator for NG8 fittings, reducing stress on connections in The part.
A spring retainer that secures the spring component, ensuring it remains in place within The part.
A threaded base for mounting the spring component, providing a stable anchor in The part.
A larger rubber isolator for NG12 fittings, providing vibration damping for the main air lines of The part.
A retaining spring for the NG12 elastic component, ensuring secure mounting in The part.
A threaded base for the larger elastic component, providing robust support in The part.
A 90‑degree elbow for connecting NG8 and NW6 tubes, used for compact routing in The part.
A 90° elbow for NG12 to NW9 connections, commonly used for main supply lines in The part.
A 90° elbow for NG12 to NW12 connections, used for high‑flow circuits in The part.
A T‑shaped fitting with NW9, NG12, and TEST ports, allowing branching and pressure testing in The part.
A T‑shaped three‑way connector with three NW9 ports, used for splitting air lines in The part.
Flexible nylon tubing with 12 mm OD and 1.5 mm wall thickness, used for main air lines in The part.
A pre‑assembled plastic tie used for bundling and securing tubes and wires in The part.
A mounting bracket used to secure the relay valve and other components to the chassis in The part.
A retaining ring or spacer used to maintain correct spacing between components in The part.
A dedicated bracket for mounting the relay valve securely to the vehicle frame, ensuring correct positioning in The part.
A standard cable tie (5 mm width, 180 mm length) used for bundling tubes and cables in The part.
A specialised bracket for securing the air tubes along the ST rear axle, keeping them organised and protected in The part.
| Part NO. | Description |
|---|---|
| AZ9725363005 | Tube circuit schematic (dual rear axis part/cast beam) |
| WG9000360524 | Relay valve |
| WG9000360524/1 | Relay valve（WABCO） |
| Q150B1035 | Hex bolt |
| Q40110 | Flat washer |
| Q40310 | Spring washer |
| Q340B10 | Hex nut |
| Q40308 | Spring washer |
| Q340B08 | 1 shape hex nut |
| WG9000361004 | Spring component NG8 |
| WG9000361005 | Cramp NG8 |
| WG9000361006 | Nut base NG8 |
| WG9000361007 | Elastic NG12 |
| WG9000361008 | Clamp spring NG12 |
| WG9000361009 | Nut base NG12 |
| WG9000361201 | Right angle joint NG8/NW6 |
| WG9000361204 | Right angle joint NG12/NW9 |
| WG9000361203 | Right angle joint NG12/NW12 |
| WG9000361406 | T shape three joint NW9/NG12/TEST |
| WG9000361310/1 | T shape three way joint3-NW9 |
| WG90003179785 | Polyamide tube (Φ12*1.5) |
| WG9725360088 | Plastic tighten belt assembly |
| WG9725360314 | Tighten bracket |
| WG9100360134 | Retainer |
| WG9725360044 | Relay valve bracket |
| WG90003171390 | Blastic tighten belt B5*180 |
| WG9725360034 | Tube fixed bracket(ST rear axis) |
Our Steyr doubel axle brake device ensures that both rear axles receive equal air pressure, providing balanced braking and enhanced vehicle stability. This reduces tyre wear and improves stopping performance.
The part features WABCO relay valves, precision‑machined fittings, and durable polyamide tubes, ensuring reliable and leak‑free operation.
Our Steyr doubel axle brake device is supplied as a comprehensive set with all brackets, fittings, and fastening belts, simplifying the installation process.
We maintain a large stock of Steyr doubel axle brake device parts for fast worldwide delivery. Our technical experts provide installation guidance and troubleshooting.
The part is essential for maintaining balanced braking between the two rear axles, preventing wheel lock‑up and skidding. A malfunctioning device can cause brake imbalance, leading to unstable handling and increased tyre wear. Regular inspection and using genuine Steyr doubel axle brake device parts are crucial for safety and performance.
The part is built to withstand extreme temperatures, moisture, and road debris. The zinc‑plated fasteners, corrosion‑resistant fittings, and flexible polyamide tubes ensure long‑term reliability even in the toughest conditions.
When installing The part, use new spring washers and torque all fasteners to the specified values. Ensure that tubes are routed without sharp bends and secured with cable ties to prevent chafing.
We recommend inspecting The part every 50,000 km. Check for air leaks, damaged tubing, and loose brackets. Replace any worn components immediately to maintain braking balance.
Our Steyr doubel axle brake device is specifically designed for the HOWO A7 8X4 with cast beam and dual rear axles, matching the factory routing and mounting points.
Each Steyr doubel axle brake device component is pressure‑tested and inspected. We offer a comprehensive warranty against defects.
We maintain a large stock of Steyr doubel axle brake device kits and individual parts for immediate dispatch. Bulk orders are available with volume discounts.
Investing in a genuine Steyr doubel axle brake device reduces maintenance frequency and prevents brake imbalance issues, lowering total cost of ownership.
Aftermarket brake devices often use inferior materials, leading to leaks and uneven braking. Our Steyr doubel axle brake device is built to OEM standards, ensuring safety and reliability.
A well‑maintained Steyr doubel axle brake device ensures consistent and balanced braking, improving vehicle control and reducing stopping distances. This translates to safer operation and reduced driver fatigue.
The part delivers consistent performance on highways, construction sites, and in adverse weather. Its robust construction and high‑quality seals ensure reliable braking under all conditions.
The relay valves in The part include anti‑compounding features to prevent simultaneous brake and throttle application, enhancing safety.
Our Steyr doubel axle brake device uses push‑to‑connect fittings and precision‑machined threads for leak‑free joints. The polyamide tubes offer excellent flexibility and resistance to ageing.
The brackets and tube guides in The part allow for neat and accessible routing, simplifying maintenance and reducing service time.
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