Wabco 9253840240 Double Diaphragm Tristop

Description

The Wabco 9253840240 Double-Diaphragm Tristop is a critical component within air brake systems, functioning as a brake actuator. It is designed for use in heavy-duty vehicles and trailers, converting air pressure into mechanical force to apply the brakes. This actuator features a robust double-diaphragm design for consistent and reliable performance. With dimensions of 187 x 318 x 184 mm, it is engineered to meet OE specifications, providing a direct fit and ensuring optimal braking efficiency. Key parameters include bolt lengths of 43.0 mm with M16 x 1.5 threads, a clamp band diameter of Ø 167 mm, and a maximum operating pressure of 10.5/8.5 bar. The actuator's design delivers precise brake control, improved responsiveness, and enhanced safety for commercial vehicle operation.

Key Features & Benefits

This thing basically controls the air brakes on your vehicle. It takes the signal from your brake pedal and translates that into air pressure that actually clamps down on the brakes. The ‘double diaphragm’ part means it’s got two flexible membranes inside, which give it a little extra power and responsiveness. The ‘Tristop’ refers to a specific design that helps control the application and release of the brakes – it’s a feature that adds precision and prevents things like brake drag. It handles service brake application, spring brake application (if your vehicle has those), and parking brake functions, all within one unit. Think of it as the central command for your air brake system. It gets the signal from your foot, boosts the air pressure, and sends it to the brake chambers at each wheel. It’s a crucial link in stopping your vehicle safely and efficiently. It’s usually found mounted somewhere near the brake chamber lines, often under the hood or chassis.

Symptoms, Risks & Replacements

This isn’t something you want to mess around with. If it fails, you lose braking power. It acts like a shield, protecting the rest of your air brake system from damage and ensuring consistent, reliable performance. You’ll notice if it's starting to go bad – things like a longer brake pedal travel, brakes dragging, or even difficulty holding a parking brake. It's a safety item, plain and simple. You can find these pretty easily; a place like Fixparts Online has a good selection, and replacing it keeps everything working like it should. It’s definitely one of those parts where getting a good quality one is worth it for peace of mind.

Warranty Information

Wabco Double Diaphragm Tristop (MPN 9253840240) comes with a 1-year warranty.