Frequently Asked Questions About Kenworth T880 Drive Axle Springs & Hangers

What are the weight capacity ratings for T880 drive axle springs, and how do I choose the right one for my application?

T880 drive axle springs typically come in capacities ranging from 20,000 to 46,000 pounds per axle set. To select the correct capacity, check your door jamb sticker for your truck's GAWR (Gross Axle Weight Rating) or consult your original build sheet. For heavy-haul applications, many operators choose springs rated 2,000-4,000 pounds above their typical loaded weight for better stability and longevity. Always match your spring capacity to your specific hauling needs rather than going with the highest rating available, as over-sprung trucks can create a harsh, bouncy ride when empty.

Will these springs and hangers fit my specific T880 model year, and what are the differences between model years?

Most drive axle springs and hangers for the T880 are compatible across model years 2013-2024, but there are important variations. Pre-2016 models may have different hanger spacing and mounting bolt patterns. Trucks with the Kenworth AG400L suspension require specific spring eye dimensions (typically 3-inch eyes). Set-forward and set-back axle configurations also use different hanger positions. Before ordering, verify your suspension type (Kenworth, Hendrickson, or Neway), axle spacing, and whether you have a single or tandem configuration. When in doubt, provide your VIN for exact fitment verification.

Can I install these springs and hangers myself, or do I need special tools and equipment?

While spring and hanger replacement is possible for experienced mechanics, it requires specific equipment and safety precautions. You'll need a minimum 20-ton bottle jack or air jack, heavy-duty jack stands rated for commercial trucks, a 3/4-inch drive torque wrench capable of 450-500 ft-lbs, and spring compressors for some applications. The job typically takes 4-6 hours per axle. Critical safety note: springs are under extreme tension and improper handling can cause serious injury. Many customers find it more cost-effective to have a qualified heavy-duty shop perform the installation, especially since improper installation can void warranties and create dangerous driving conditions.

What's the difference between OEM and aftermarket springs, and how long should they last?

OEM Kenworth springs are manufactured to exact factory specifications and typically feature shot-peened construction for fatigue resistance, lasting 500,000-700,000 miles under normal conditions. Quality aftermarket springs from manufacturers like Dayton Parts or Triangle often match OEM specs at 20-30% lower cost and provide similar longevity. Lower-cost imports may save 40-50% upfront but often show premature sagging or cracking after 200,000-300,000 miles. Spring life depends heavily on application - dump trucks and heavy-haul operations may need replacement every 300,000 miles, while highway trucks often exceed 600,000 miles. Look for springs with mill certifications and proper heat treatment specifications.

My T880 has developed a lean or sits uneven - will replacing springs fix this issue?

Uneven ride height is commonly caused by fatigued springs, but replacing springs alone may not solve the problem. First, measure your frame height at multiple points to determine if the lean is side-to-side or front-to-back. Check for worn hanger bushings, bent hangers, or shifted axle alignment, as these issues often accompany spring problems. If one spring has sagged more than 1 inch compared to its pair, replacement of both springs on that axle is recommended. Some T880s with auxiliary equipment (cranes, dumps bodies) may require custom spring rates or adjustable suspension components to achieve proper ride height. Always replace springs in axle sets and perform a complete alignment after installation.