The Engine exhaust brake and operate device is a critical pneumatic control system that provides auxiliary braking by restricting exhaust flow, enhancing vehicle safety and reducing brake wear on the HOWO A7 8X4. This comprehensive kit includes the Joint, Plug, Elastic componentNG, Clamp NG8, Self-locking screw, Polyamide tube (Φ6*1), Support plate 12, Retainer, and Plastic fasten belt B5*280. When you choose genuine howo Parts for your engine exhaust brake and operate device replacement, you guarantee reliable actuation, leak-free connections, and long-lasting performance in the most demanding driving conditions.
The Joint is a straight-through connector (NG6/W4) that links pneumatic lines within the exhaust brake circuit. It ensures a secure, leak-proof connection between tubes and components.
This joint is made from brass with a nickel-plated finish, providing excellent corrosion resistance and durability under high-pressure, high-temperature conditions typical of exhaust brake systems.
The Plug (M10X1) is a threaded sealing cap used to close unused ports in the pneumatic manifold. It prevents contamination and maintains system integrity.
This plug is manufactured from steel with a corrosion-resistant coating, and its precise thread ensures a tight seal even under fluctuating pressure.
The Elastic componentNG is a flexible damping element that absorbs shock and compensates for thermal expansion in the pneumatic line. It reduces stress on fittings and extends system life.
Made from high-grade synthetic rubber, this component resists oil, ozone, and extreme temperatures, ensuring consistent performance in the engine compartment.
The Clamp NG8 is a spring-loaded retainer that securely holds the polyamide tube in place, preventing disconnection due to vibration. It is designed for quick installation.
This clamp is made from stainless steel, offering excellent corrosion resistance and maintaining its clamping force over thousands of cycles.
The Self-locking screw (nut seat NG6) is a threaded fastener with a built-in nylon patch that prevents loosening under vibration. It secures the joint and other components to the mounting bracket.
This fastener is made from grade 8.8 steel with a zinc plating, providing both strength and corrosion resistance for long-term reliability in the engine bay.
The Polyamide tube (Φ6*1) is a flexible, dimensionally stable pneumatic hose used to transmit actuation pressure from the control valve to the exhaust brake actuator. Its 6mm outer diameter and 1mm wall thickness provide an optimal balance of flexibility and burst strength.
This tube is made from PA12 polyamide, which offers excellent resistance to heat, oil, and abrasion. It is supplied in 4-meter lengths for versatile routing.
Proper installation of the polyamide tube is essential for the engine exhaust brake and operate device to respond quickly and maintain full braking force when engaged.
The Support plate 12 is a rigid mounting bracket that holds the pneumatic components securely to the engine or chassis. It provides a stable platform for the joint, plug, and elastic component.
This plate is made from galvanized steel and features pre-drilled holes for easy attachment, ensuring proper alignment of the entire exhaust brake control assembly.
The Retainer is a spacing ring used to maintain proper clearance between the polyamide tube and adjacent components, preventing chafing and wear. It is available in two part numbers (WG9100360134 and 199100360134) for different locations.
Made from durable engineering plastic, the retainer is lightweight yet strong, and it resists oil and heat, making it ideal for use near the engine.
The Plastic fasten belt B5*280 is a heavy-duty cable tie used to bundle and secure the polyamide tube and other cables along the chassis. It is 5mm wide and 280mm long, offering high tensile strength.
This belt is made from UV-stabilized nylon 6/6, ensuring long-term flexibility and resistance to environmental degradation. Two supplier variants are available, both meeting the same quality standards.
Engine exhaust brake and operate device – Complete pneumatic control kit for HOWO A7 8X4
| Part NO. | Description |
|---|---|
| WG9000361107 | Joint |
| WG9000361010 | Plug |
| WG9000361001 | Elastic componentNG |
| WG9000361002 | Clamp NG8 |
| WG9000361003 | Self-locking screw |
| 190003179782 | Polyamide tube (Φ6*1) |
| 1880360083 | Support plate 12 |
| WG9100360134 | Retainer |
| 199100360134 | Retainer |
| WG9003171390 | Plastic fasten belt B5*280 |
| WG9003171390/1 | Plastic fasten belt B5*280 |
Our Engine exhaust brake and operate device components are manufactured from premium materials that withstand high temperatures, oil, and vibration. The polyamide tube and elastic elements provide flexibility while maintaining pressure integrity for consistent braking power.
The complete kit includes every fitting, tube, clamp, and fastener needed for installation, eliminating the need to source individual parts. This saves time and ensures compatibility, reducing the risk of leaks or improper assembly.
All components are designed to OEM specifications, ensuring a perfect fit on the HOWO A7 8X4. The support plate and retainers are precisely shaped to match the engine mounting points, simplifying installation and alignment.
We back our Engine exhaust brake and operate device with a comprehensive warranty and technical support. Choose genuine howo Parts for the confidence of reliable auxiliary braking, reduced service brake wear, and enhanced downhill safety.
The engine exhaust brake and operate device uses engine backpressure to create retarding force, reducing the need for frequent service brake application. This is especially valuable on long descents, preventing brake fade and overheating.
The system operates via pneumatic pressure supplied from the vehicle’s air system, controlled by a dash-mounted switch. When activated, the control valve directs air to the exhaust brake actuator, which closes a butterfly valve in the exhaust pipe.
The polyamide tube transmits the actuation signal from the valve to the actuator. Any leak or restriction in this tube will delay or weaken brake application, so using high-quality components is essential.
The elastic component and retainer work together to absorb vibration and maintain tube alignment, preventing fatigue failure at connection points. The support plate ensures that all components are rigidly mounted, reducing stress on the fittings.
Begin by isolating the air supply and relieving system pressure. Mount the support plate securely to the engine using the provided self-locking screws and any existing brackets. Ensure the plate is level and aligned with the actuator port.
Connect the joint to the actuator and control valve ports, applying thread sealant to the male threads. Install the elastic component between the joint and the tube to absorb vibration. Cut the polyamide tube to the required length, ensuring a clean, square cut.
Push the tube firmly into the joint and secure it with the clamp NG8. Use the retainers at intervals along the tube to prevent chafing against sharp edges. Bundle and secure the tube with the plastic fasten belts, allowing slight slack for engine movement.
After installation, pressurize the system and check for leaks using a soapy water solution. Activate the exhaust brake from the cab and listen for the actuator movement. Verify that the engine responds with a noticeable increase in retardation.
Regularly inspect the tube and fittings for signs of wear or cracking, especially after off-road use. Replace the plastic fasten belts if they become brittle, and retighten the self-locking screws if any loosening is detected.
The engine exhaust brake and operate device components are designed for the HOWO A7 8X4 with the NG6 pneumatic interface. They are compatible with all engine variants that use the standard exhaust brake actuator.
The joint, plug, and elastic component are standard NG6 sizes and can be used with other pneumatic systems of the same specification. The polyamide tube is a common 6mm OD tubing, readily replaceable with equivalent material.
The support plate and retainers are vehicle-specific, so always order the correct part numbers for your chassis. The plastic fasten belts are universal and can be used for other cable management tasks.
When sourcing replacements, ensure that the self-locking screws have the correct thread pitch and length. Using incorrect fasteners can compromise the integrity of the mounting and lead to component failure.
A properly functioning engine exhaust brake and operate device significantly extends the life of the service brakes by reducing their usage on downhill grades. This translates to lower maintenance costs and less downtime for brake pad and drum replacements.
The high-quality polyamide tube and elastic components resist degradation from underhood heat and oil, ensuring consistent response time. The self-locking screws maintain clamping force even under severe vibration, preventing air leaks.
For fleet operators, standardizing on this kit simplifies inventory and ensures all trucks have the same reliable braking performance. Regular inspection of the tube and fittings should be part of the preventive maintenance schedule.
We recommend replacing the polyamide tube every 5 years or if any signs of cracking or hardening are observed. Keep spare clamps and fasten belts in your service truck for quick repairs.
Our technical support team is available to assist with any installation questions or compatibility checks. We are committed to keeping your HOWO A7 8X4 safe and efficient with our engine exhaust brake and operate device solutions.
Order your engine exhaust brake and operate device kit today and experience the confidence that comes with genuine howo Parts. Your safety and productivity are our top priorities.
With over 20 years of experience in heavy-duty truck parts, we have the expertise to supply the highest quality components. Trust us for all your pneumatic and exhaust brake needs.
We offer competitive pricing and fast shipping to keep your fleet on the road. Contact us today for bulk order discounts and technical support.
Remember, a well-maintained exhaust brake system is essential for driver safety and vehicle longevity. Don’t compromise on quality – choose our Engine exhaust brake and operate device kit.
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