Wabco 4756040130 Light Load Valve

Description

The Wabco 4756040130 Light Load Valve is a crucial component within air brake systems, specifically designed to regulate air pressure in commercial vehicles. This valve is typically installed between the air compressor and the brake valve, managing airflow based on vehicle load. It's a mechanical, dynamically operated device, suitable for flange mounting according to DIN 71501. The valve features M22 x 1.5 port threads and operates within a temperature range of -40°C to +80°C, and a maximum operating pressure of 10.0 bar. Its adjustment range is 1.4 to 2.8 / 3.4 to 4.3 bar, ensuring optimal braking performance. The valve's dimensions are 93 x 131 x 101 mm, and it is built to OE specification providing reliable and consistent operation.

Key Features & Benefits

This valve basically controls how much air pressure gets sent to your rear air springs, or sometimes to the lift axles on larger trucks. It’s a proportional valve, meaning it doesn't just switch air on and off, it adjusts the amount of air based on how much weight you’ve got back there. It reads the suspension height and then opens or closes to keep everything level. Think of it like a smart regulator. It’s part of the air brake system, but specifically dealing with the suspension. It works with the air suspension components – the springs, height control valves, and the air compressor – to maintain a stable ride height. It’s usually found on trucks or trailers that carry variable loads, you know, where the weight isn't always the same. It's not directly stopping the vehicle, but it’s a critical component in how well your suspension works to support the load.

Symptoms, Risks & Replacements

Keeping that rear suspension properly inflated is a big deal for a bunch of reasons. First, it keeps your ride comfortable. More importantly though, it keeps things safe. If the suspension isn't working right, your handling suffers, and you'll notice if things get really bad—it’ll feel unstable, especially in turns or when braking. It also protects your suspension components from damage, acting like a shield against harsh impacts. If it fails, you can end up with uneven tire wear, a rough ride, and even damage to the vehicle itself. You can often find a replacement like this at places like Fixparts Online, but getting the right one is key.

Warranty Information

Wabco Light Load Valve (MPN 4756040130) comes with a 1-year warranty.