Wabco 4630840100 Lift Axle Control Valve

Description

The Wabco 4630840100 Lift Axle Control Valve is a critical component within trailer air brake systems, specifically designed to manage lift axle operation. This device is used in trailers to control the raising and lowering of lift axles, optimizing fuel efficiency and tire wear. The valve features electrical actuation and is built to OE specification for reliable performance. Its robust design, with dimensions of 129 x 121 x 167 mm, and IP 6K6K protection class, ensures durability in demanding environments. Operating at 24 V with a rated current of 220 mA and a maximum operating pressure of 13.0 bar, this dual-circuit valve provides precise and dependable control of the lift axle system.

Key Features & Benefits

This valve basically manages the air pressure going to the lift axle—that’s the extra axle some trailers have to spread the weight. It raises and lowers that axle, depending on how much load you have. It controls the flow of air into the air bags or cylinders that do the actual lifting and lowering, and it has settings to adjust the ride height. Some have manual controls in the cab, others are automatic and react to the trailer load. Think of it as the brain for your lift axle. It receives signals – either from you, the driver, or from sensors on the trailer – and then tells the axle when to go up or down. It’s part of the whole air brake system, working with the air compressor, air bags, and other components to keep everything stable and safe. It makes sure the weight is distributed properly across all the axles.

Symptoms, Risks & Replacements

If this valve goes bad, you’ll notice if the axle isn't raising or lowering correctly, or maybe it's doing it at the wrong time. That can cause a really unstable trailer, uneven tire wear, and even affect braking. It can also cause legal issues if you're overweight on certain axles. Keeping it working right is essential for safe and efficient hauling. You can find these pretty easily, places like Fixparts Online stock a good range of them.

Warranty Information

Wabco Lift Axle Control Valve (MPN 4630840100) comes with a 1-year warranty.