The Wabco 9730022504 Spring Washer is a crucial component used within trailer brake controls, specifically in air brake systems. It functions by providing a resilient, spring-loaded connection, maintaining consistent pressure and preventing loosening due to vibration. This washer ensures reliable brake performance and extends the lifespan of connected components. Its design provides a secure and consistent load distribution, enhancing overall braking system efficiency and safety. They’re basically a type of fastener, a bit like a regular washer, but they’re split open on one side. This split is what gives them their function. When you tighten a nut or bolt down onto it, that split actually flexes. That flexing creates tension – a spring – like resistance – that helps maintain the clamping force. It keeps things from loosening up due to vibration or thermal expansion and contraction. They don’t really tighten anything further, it’s more like they help maintain what you've already tightened to. In a trailer brake system, you’ll find these used in places like securing the brake shoes, or attaching components of the brake chamber. Any place where you want to be really sure something doesn’t come loose from shaking and movement. They're also sometimes used on the slack adjuster components. Basically, anywhere there’s a critical connection that needs to stay put. Well, think about it – you’re dealing with the braking system on a trailer. That’s serious stuff. If things start to loosen up, you can get lost motion, reduced braking power, and eventually, a really dangerous situation. These washers acts like a shield against that loosening, constantly applying pressure. You’ll notice if you’re missing a spring washer because things will start rattling and you might even see evidence of things coming loose. It's a small part, but a missing or damaged one can create a big problem. You can find these pretty easily; a place like Fixparts Online has a good selection if you need to replace a few. Replacing them when you’re doing other brake work is just good preventative maintenance. Top-rated performance: Spring Washer (MPN 9730022504) has a 12-month warranty!

About Wabco

WABCO specializes in air braking systems, EBS, ABS, ADAS, and trailer control systems.

Why Choose Wabco?

• Wabco parts are known for lasting a long time, saving you money on repairs in the long run. • We have a huge selection of parts, so you’re likely to find exactly what you need for your vehicle. • Our parts meet or exceed industry standards, giving you peace of mind on the road. • Wabco has been a trusted name in auto parts for decades, with a reputation for quality and reliability. Wabco – trusted quality, available at FixParts Online!