Wabco 13303021 Spiral Spring

Description

The Wabco 13303021 Spiral Spring is a critical component within the brake drum assembly of mechanical brake systems. It functions as a return spring, ensuring proper brake shoe contact and release. This component is designed to meet OE specifications, delivering reliable performance and durability. Measuring 2 x 31 x 29 mm, this spiral spring offers precise tension and consistent operation, contributing to optimal braking efficiency and extended component life.

Key Features & Benefits

These little guys are all about keeping things adjusted right inside your brake drum. Specifically, they provide tension on the shoes, pushing them out against the drum when you release the brake pedal. They're a key part of the automatic adjuster system. They wind and unwind as the brake shoes wear, automatically taking up the slack so you don't have to manually adjust them all the time. Think of it as working with the adjuster lever and the adjuster screw inside the drum. As the shoes wear down, the adjuster mechanism extends slightly to maintain consistent contact. The spiral spring is what provides the force to move that adjuster. It’s a pretty simple piece, but it's essential for that automatic adjustment to work. It’s directly tied into how quickly and efficiently your brakes engage and disengage.

Symptoms, Risks & Replacements

If this spring breaks or loses tension, that automatic adjustment stops working. You’ll notice if your brakes start to feel spongy or you have to manually adjust them more often. Over time, if it’s really bad, it can lead to uneven brake wear, pulling to one side when you brake, or even the brakes dragging. It's a relatively inexpensive part, but neglecting it can cause bigger, more expensive problems down the road. You can find these pretty easily at places like Fixparts Online, and honestly, when you’re doing brake work, it’s smart to replace them as a routine maintenance item along with the shoes and hardware. It saves you headaches later.

Warranty Information

Wabco Spiral Spring (MPN 13303021) comes with a 1-year warranty.