WG9000360794 Aluminum Alloy Air Reservoir: Reliable Compressed Air Storage for Heavy-Duty Braking Systems

Ensure the safety and reliability of your SINOTRUK Howo’s pneumatic systems with the genuine Aluminum Alloy Air Reservoir Assembly Φ276/30L, a critical air storage tank for braking and auxiliary functions. This OEM air reservoir, identified by the exact part number WG9000360794, is engineered to provide a consistent and clean supply of compressed air, essential for the vehicle’s safety-critical operations. As a premier supplier of authentic Sinotruk howo parts, we provide this factory-specified assembly, designed for durability, corrosion resistance, and optimal performance. The WG9000360794 reservoir plays a fundamental role in storing compressed air from the compressor, stabilizing system pressure, and ensuring immediate air availability for brake applications and other pneumatic accessories. Installing the correct WG9000360794 component is a direct investment in your truck’s braking safety, system reliability, and overall operational integrity.

Aluminum Alloy Air Reservoir Assembly Φ276/30L

Алюминиевый воздушный ресивер WG9000360794

Depósito de Aire de Aleación de Aluminio WG9000360794

Features of the WG9000360794 Air Reservoir Assembly

The WG9000360794 is a high-quality, lightweight aluminum alloy air reservoir, a crucial component in the pneumatic systems of SINOTRUK Howo trucks. Its primary function is to store compressed air generated by the vehicle’s air compressor, acting as a buffer and supply tank for the brake system and other pneumatic accessories. This genuine OEM assembly is engineered for exceptional strength-to-weight ratio, corrosion resistance, and long-term reliability in harsh operating environments. The Φ276/30L designation indicates a reservoir with an approximate diameter of 276mm and a volume of 30 liters.

Manufactured to exacting OEM standards, the WG9000360794 reservoir features a seamless or welded cylindrical body constructed from high-grade aluminum alloy. This material choice eliminates the risk of internal rust, a common failure point in traditional steel tanks, ensuring the air supply remains clean and dry. The tank is designed to withstand high operating pressures, typically up to 1.2 MPa (12 bar) or more, with a significant safety margin. Integrated mounting brackets are precision-formed to allow for secure and vibration-resistant attachment to the vehicle’s chassis.

The assembly includes several critical integrated components. These typically feature a main inlet port from the compressor, multiple outlet ports for different circuits (primary, secondary, auxiliary), a safety pressure relief valve, a manual drain valve for condensate removal, and often a pressure sensor port. All connections are threaded to OEM specifications for leak-free integration into the existing air system. The entire WG9000360794 unit is a complete, ready-to-install assembly that restores system integrity.

Technical Specifications

The WG9000360794 Aluminum Alloy Air Reservoir is manufactured to precise dimensional, volumetric, and pressure standards. The table below details its key technical specifications, providing essential information for verification, compatibility assessment, and system design.

Compatibility & System Role

The WG9000360794 air reservoir is engineered as a direct replacement for the original storage tank on specific SINOTRUK Howo truck models. Its compatibility is defined by its physical dimensions (mounting bracket layout), its 30-liter capacity, and the configuration of its inlet and outlet ports, which must match the vehicle’s air line routing. This ensures seamless integration into the existing pneumatic circuit as a primary, secondary, or auxiliary air tank.

Within the vehicle’s pneumatic system, the WG9000360794 serves multiple vital functions. Primarily, it acts as a storage buffer. The air compressor does not run continuously; it charges the reservoir when pressure drops below a set threshold. The stored air in the WG9000360794 tank ensures an immediate and ample supply is available for multiple, rapid brake applications without waiting for the compressor to cycle. This is critical for safety during descent or in stop-and-go traffic. Secondly, it helps stabilize system pressure, reducing cycling frequency of the compressor and acting as a moisture separator; as compressed air cools inside the tank, water vapor condenses and collects at the bottom to be drained away.

Using the correct WG9000360794 reservoir with the specified capacity is essential. An undersized tank may not provide sufficient air reserve, leading to rapid pressure drop during sustained braking and potential brake fade. An incorrectly ported tank can complicate installation and may not properly integrate with the vehicle’s multi-circuit protection valves, compromising system isolation and safety.

Advanced Engineering & Construction

The performance and durability of the WG9000360794 reservoir are rooted in advanced material science and precision manufacturing. The tank body is typically formed from a high-grade, weldable aluminum-magnesium or aluminum-silicon alloy. These alloys are selected for their excellent strength, low weight, and outstanding corrosion resistance. The manufacturing process involves extrusion, deep drawing, or rotary forging to create a seamless or longitudinally welded cylinder, which is then capped with domed ends for optimal pressure distribution.

The tank is designed and tested as a pressure vessel. It undergoes rigorous hydrostatic and pneumatic testing at pressures significantly higher than its working pressure to validate its structural integrity and safety factor. All welded seams are inspected to ensure they are free of defects. The internal surface is smooth to minimize areas where moisture and contaminants can accumulate. The aluminum construction is inherently non-corrosive in the presence of moisture, unlike steel, which requires internal coatings that can degrade over time. This makes the WG9000360794 exceptionally reliable and long-lasting.

Fittings and mounting brackets are welded or mechanically attached to the body with high precision. The drain valve, usually a manual petcock or automatic type, is installed at the lowest point to facilitate easy removal of condensed water. The entire WG9000360794 assembly is cleaned and prepared to ensure no internal debris is present before shipment, guaranteeing clean air system integration from the moment of installation.

Critical Role in Vehicle Safety & Operation

The WG9000360794 air reservoir is a foundational component of the truck’s safety system. In air-braked vehicles, the brakes are applied using air pressure. The reservoir’s primary job is to ensure that sufficient air is always available to apply the brakes with full force, repeatedly if necessary. A failure of the reservoir—such as a severe leak or rupture—can lead to a rapid loss of system pressure and a corresponding loss of braking power, creating an extremely dangerous situation.

Beyond the brakes, the compressed air stored in the WG9000360794 tank powers other critical functions. This includes air-assisted clutch operation (if equipped), suspension leveling valves for air ride systems, air horns, and cab tilt mechanisms. A reliable air supply ensures these systems function correctly, contributing to overall vehicle control, driver comfort, and operational capability. The reservoir also plays a key role in system health by allowing compressed air to cool, which causes moisture to condense out. Regular draining of this condensate via the tank’s valve is a simple but vital maintenance task to prevent ice formation in winter and corrosion in downstream components.

Therefore, the WG9000360794 is not a passive container but an active, safety-critical component. Its integrity and proper function are subject to regulatory inspection in many jurisdictions, underscoring its importance in commercial vehicle operation.

Professional Installation & Maintenance Guidelines

Installation of the WG9000360794 reservoir should be performed by a qualified technician. The procedure begins by safely de-pressurizing the entire air system and isolating the vehicle. The old tank is removed by disconnecting all air lines (note their positions for reconnection), unbolting the mounting brackets, and carefully lowering it. The mounting area on the chassis should be cleaned and inspected for corrosion.

The new WG9000360794 assembly is then positioned, ensuring it is oriented correctly so the drain valve is at the lowest point. It is secured using the provided hardware, torqued to specification. All air lines are reconnected to their respective ports, using thread sealant or O-rings as required. After installation, the system must be re-pressurized and a thorough leak check performed with a soapy water solution on all new connections. Finally, the system should be cycled and the automatic moisture drain (if equipped) or manual drain valve tested to ensure proper function.

Routine maintenance is straightforward but essential. The manual drain valve on the WG9000360794 should be opened daily during pre-trip inspections (or according to the vehicle’s maintenance schedule) to expel accumulated water and oil. This prevents internal corrosion in downstream components and maintains air quality. During annual inspections, the tank should be examined externally for signs of physical damage, corrosion, or leaks. The integrity of the reservoir is critical, and any sign of significant damage or corrosion necessitates immediate replacement.

Genuine OEM Quality vs. Aftermarket Alternatives

Choosing the genuine WG9000360794 aluminum air reservoir over aftermarket options is a decision impacting safety, longevity, and system integrity. Aftermarket tanks may use lower-grade alloys or steel with inferior coatings, making them susceptible to internal rust. Rust scale can flake off and travel through the air lines, clogging valves, damaging seals in brake chambers, and contaminating the entire system.

The manufacturing standards and pressure testing protocols for OEM parts like the WG9000360794 are stringent and traceable. Aftermarket tanks may not undergo the same level of non-destructive testing (such as X-ray or ultrasonic inspection of welds), posing a potential risk of undetected defects. Furthermore, the port threading and mounting bracket alignment on non-OEM parts may not be exact, leading to installation difficulties, stripped threads, or misalignment that stresses air lines.

For fleet operators, the non-corrosive nature of the aluminum OEM WG9000360794 translates into a significantly longer and more predictable service life, reducing the total cost of ownership and eliminating a major source of air system contamination that leads to costly downstream repairs.

Reliability & Service Life

The WG9000360794 aluminum alloy air reservoir is engineered for exceptional longevity and reliability in the demanding environment of commercial trucking. Its aluminum construction is fundamentally immune to the internal rust that plagues steel tanks, which is the primary failure mode for air reservoirs. This material advantage, combined with robust manufacturing and testing, results in a component designed to last the lifetime of the vehicle under normal operating conditions.

Choosing this genuine OEM component eliminates the worry of premature tank failure due to corrosion. While the external environment may cause surface oxidation, this does not compromise the tank’s structural integrity. With simple routine maintenance—primarily regular draining of condensate—the WG9000360794 will provide dependable service for hundreds of thousands of kilometers. This exceptional reliability is a cornerstone of a safe and cost-effective fleet operation, removing a significant variable from the maintenance equation and contributing to higher vehicle availability.

The predictable service life of the WG9000360794 allows fleet managers to focus maintenance resources elsewhere, confident that this critical safety component will perform as designed without unexpected intervention.

Conclusion

The Aluminum Alloy Air Reservoir Assembly Φ276/30L (OEM WG9000360794) is a vital, high-quality chassis component essential for the safety and functionality of SINOTRUK Howo pneumatic systems. Its role as a clean, reliable, and corrosion-free air storage tank is fundamental to effective braking and the operation of numerous vehicle accessories.

Opting for this genuine reservoir over conventional steel or inferior aftermarket alternatives is a critical decision for any owner or fleet manager who prioritizes safety, long-term reliability, and low total cost of ownership. It guarantees perfect compatibility, delivers proven durability through advanced aluminum alloy construction, and plays a direct role in preventing air system contamination and failure. The WG9000360794 represents a fundamental investment in the operational safety, integrity, and professional maintenance of your heavy-duty truck.

Trust in OEM engineering excellence. Choose the original WG9000360794 aluminum alloy air reservoir to ensure your SINOTRUK Howo’s pneumatic system is supported by a tank that delivers clean, dry, and readily available air—safeguarding your vehicle’s braking performance, your cargo, and everyone on the road.