Frequently Asked Questions About Kenworth T600 Drive Axle Springs & Hangers

Will these springs and hangers fit my specific year Kenworth T600?

Our drive axle springs and hangers are compatible with Kenworth T600 models from 1987 through 2007. However, there are variations depending on your truck's suspension configuration (Hendrickson, Reyco, or Kenworth AG400). Always verify your current suspension type and axle weight rating before ordering. You can find this information on your truck's build sheet or by checking the existing suspension components for manufacturer stamps.

What's the difference between OEM and aftermarket springs, and which should I choose?

OEM springs are manufactured to exact Kenworth specifications using high-grade spring steel, while aftermarket options vary in quality. OEM springs typically last 300,000-500,000 miles under normal use, while quality aftermarket springs may achieve 250,000-400,000 miles. Budget aftermarket springs often use lower-grade steel and may sag prematurely. For trucks still under warranty or used in heavy-duty applications, we recommend OEM. For older trucks or lighter duty use, quality aftermarket brands like Dayton Parts or Triangle Suspension offer good value.

Can I replace springs and hangers myself, or do I need special tools?

While experienced mechanics can perform this job, it requires specific tools and safety equipment. You'll need a heavy-duty floor jack (minimum 20-ton capacity), jack stands rated for commercial trucks, a torque wrench capable of 450-500 ft-lbs, and spring compressors. The job typically takes 4-6 hours per axle. Critical safety note: compressed springs store tremendous energy and can cause serious injury if mishandled. Many customers find it more cost-effective to have a truck shop perform the installation, which typically runs $400-600 in labor.

How do I know when my springs and hangers need replacement?

Key indicators include: visible cracks in spring leaves, broken or missing spring leaves, excessive rust or corrosion on hangers, worn or elongated hanger bolt holes, uneven ride height side-to-side (more than 1 inch difference), and excessive bouncing or bottoming out. Also check for shiny wear marks on spring leaves indicating they're making contact where they shouldn't. Hangers should be replaced if you see stress cracks around bolt holes or if bushings are worn beyond 1/4 inch of play.

Do I need to replace springs and hangers as a set, or can I do them separately?

While you can technically replace them separately, we strongly recommend replacing springs and hangers together. Worn hangers can cause premature spring failure, and new springs on worn hangers won't perform properly. When one component is worn enough to need replacement, the other is typically not far behind. Replacing them together also saves on labor costs if you're having the work done professionally, and ensures proper alignment and load distribution across your suspension system.