Wabco 9753034470 Combined Unloader

Description

The Wabco 9753034470 Combined Unloader is a critical component within air brake systems, specifically designed for air pipes and lines. This device functions to release compressed air, ensuring optimal braking performance and system safety in commercial vehicles. This combined unloader features a one-way valve and a tire inflating valve, and is manufactured to OE specification. Its dimensions are 91 x 108 x 171 mm. This unloader boasts a calculated volume of 1.6806, a cut-out pressure of 7.3 bar, a maximum operating pressure of 25.0 bar, and an opening pressure of 12.0 bar. It features M22 x 1.5, M16 x 1.5, M22 x 1.5, M12 x 1.5, and Ø 20 mm port threads, as well as mounting options for 2x Ø 8.8 mm bolts. With an operational range of 0.6+0.4 bar and a temperature range of -40°C to +80°C, this device provides reliable and consistent performance in diverse operating conditions.

Key Features & Benefits

This little guy basically manages the air pressure in your brake system, specifically when you’re not actively pressing the brake pedal. It releases excess air pressure built up by the compressor, preventing the brakes from partially applying unintentionally. It also helps maintain consistent air pressure throughout the system. Think of it like a pressure relief valve – it lets off steam when things get too high. It combines the functions of a dump valve and a priority valve into one unit, simplifying things. It sits right within your air processing unit, which is usually near your air compressor. It’s a key part of keeping your air brakes reliable. The compressor is building up air constantly, and this unloader makes sure that excess air doesn't create problems. Without it, your brakes could drag, leading to overheating and wear.

Symptoms, Risks & Replacements

Well, brakes are kinda important, right? If this fails, you'll notice if your brakes start applying themselves slightly when you let off the pedal, or if you're constantly fighting against them. That’s not just annoying; it's a safety issue and really wears out your brake components fast. A failing unloader can also cause the air compressor to overwork and potentially fail. You can find these fairly easily if you’re looking online, places like Fixparts Online carry them. They aren't hugely expensive to replace, and honestly, keeping it in good shape is a lot cheaper than dealing with brake repairs later on. It really acts like a shield for the rest of your air brake system, preventing a whole cascade of problems.

Warranty Information

Wabco Combined Unloader (MPN 9753034470) comes with a 1-year warranty.