Wabco 4756040410 Load Sensing Valve

Description

The Wabco 47560410 manual load sensing valve is a critical component in air brake systems, responsible for maintaining consistent braking force regardless of vehicle load. This valve is commonly used in commercial vehicles, trailers, and buses. It dynamically adjusts the air pressure to the service brakes based on the load applied to the vehicle, ensuring optimal stopping performance and safety. The valve features a flange mount adhering to DIN 71501 standards, M22 x 1.5 port threads, and operates within a temperature range of -40°C to +80°C. Its dimensions are 86 x 149 x 130 mm, and it’s designed to meet OE specifications, providing reliable and consistent performance.

Key Features & Benefits

This valve basically monitors how much weight your vehicle is carrying, and then adjusts the air pressure going to the rear brakes accordingly. It’s a pretty smart little piece. It does this by physically sensing the movement of your suspension – how much it's compressing under load. That movement tells the valve how heavy the load is. It then proportionally increases or decreases the air pressure sent to the rear air springs and brakes. Think of it as the brain controlling the rear brakes, making sure they’re working with the weight you’re hauling. Without it, your rear brakes might not be strong enough when you’re loaded, or they might lock up easily when you're empty or lightly loaded. It's a key part of keeping everything balanced and safe, especially on trucks, trailers, and heavier vehicles that use air brakes.

Symptoms, Risks & Replacements

It’s vital for safe stopping. If you're carrying a full load and this valve fails, you might have seriously reduced braking power in the rear – a really dangerous situation. Conversely, if it fails and over applies pressure to the rear brakes when unloaded, you’ll notice if you’re getting a lot of rear – wheel lockup. It’s designed to prevent that. It helps maintain stability, reduces brake wear, and helps you stay in control. You can find these fairly easily online, Fixparts Online usually has a good selection, but it’s one of those parts where a failing one is a definite safety concern so I’d recommend getting it sorted quickly.

Warranty Information

Wabco Load Sensing Valve (MPN 4756040410) comes with a 1-year warranty.