What Is A Dual Air Brake System
What Is A Dual Air Brake System At AfricaBoyz Online, our commitment extends beyond being a premier online automotive parts supplier. We’re dedicated to sharing our profound knowledge of vehicles and the motor industry with our valued customers. In this article, we delve into the intricacies of dual air brake systems – a critical feature found in most modern vehicles. Since their inception in the mid-1970s, these systems have significantly elevated road safety, potentially saving lives in the process.
Unveiling Dual Air Brake Systems
A dual air brake system is essentially the amalgamation of two brake systems or circuits into a single entity. While these systems share a common set of brake controls, each possesses its own array of hoses, air tanks, and lines. Typically, one system operates the conventional brakes on the rear axle/s (referred to as the primary reservoir), while the other manages the front service brakes on the front axle (known as the secondary reservoir).
The Purpose Behind Dual Air Brake Systems
The emergence of the dual air brake system was driven by the pursuit of enhanced safety and driver control during scenarios of total brake failure. The fundamental idea was to thwart the possibility of complete brake malfunction arising from any fault within the vehicle’s brake components. Should the primary brakes falter due to any reason or if an air leak surfaces in either system, the secondary system remains operative and independent. This empowers the driver to bring a heavy vehicle to a halt safely.
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Vehicles Equipped with Dual Air Brake Systems
A vast majority of contemporary vehicles furnished with air brakes, especially heavy-duty ones, boast dual air brake systems. In fact, the installation of a dual-circuit braking system is a mandated requirement for all heavy-duty vehicles in the present day.
Identifying a Dual Air Brake System
Discerning drivers can visually identify a vehicle equipped with a dual-circuit brake system through dash-mounted air pressure gauges labeled as ‘primary’ and ‘secondary’. Alternatively, some vehicles feature a single gauge housing two needles, reflecting the pressure levels in both the primary and secondary systems. All air brake-equipped vehicles possess at least one air pressure gauge mounted on the dashboard, allowing real-time monitoring while driving.
Functionality of the Dual Air Brake System
Upon engaging the vehicle’s brakes, air is drawn from the primary reservoir via the foot valve and routed to the relay valve. This valve dispatches air from the primary reservoir to the rear brake chambers. Simultaneously, air is drawn from the secondary reservoir through the foot valve and supplied to the front brake chambers.
Precautions Before Operating a Vehicle with Dual Air Brakes
Before setting out in a vehicle equipped with a dual air brake system, it’s imperative to allow time for the air compressor to build up pressure in both the primary and secondary systems. Adequate pressure, around 100 psi, should be achieved in both systems before commencing driving.
Low Air Pressure and Warning Systems
Both the primary and secondary circuits incorporate low-pressure warning mechanisms and pressure gauges. A drop in air pressure below 60 psi indicates insufficient pressure in either system, implying compromised operation of front or rear brakes. A red warning light and an audible buzzer signal typically activate in such cases. These warning devices ensure safe braking conditions and should cease once the air pressure in both systems attains the prescribed value, typically greater than 60 psi (414 kPa) as per manufacturer specifications.
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Safe Driving Practices with Dual Air Brake Systems
If warning devices activate while driving, promptly pull over, come to a stop, and park in a secure location. Only proceed after investigating the cause of the warning signals and confirming the brake system’s safety. Address any issues immediately by seeking brake system repairs. For automotive parts, AfricaBoyz Online offers a comprehensive range at affordable prices. Our reliable courier service ensures swift doorstep delivery, allowing you to swiftly restore your vehicle’s functionality.
