Frequently Asked Questions About Kenworth T880 Drum Brake Parts

What years of Kenworth T880 are these drum brake parts compatible with?

Our drum brake parts are designed to fit Kenworth T880 models from 2013 to present. However, there are variations between model years, particularly in brake drum sizes (16.5" x 7" vs 16.5" x 8.625") and ABS sensor configurations. Always verify your specific truck's VIN and brake specifications before ordering. For 2013-2017 models, most use Q-Plus brake shoes, while 2018+ models may use either Q-Plus or ES Extended Service shoes depending on the application.

How difficult is it to replace drum brake components on a T880, and what special tools are needed?

Replacing drum brake components requires intermediate mechanical skills and specific tools. You'll need a brake spring tool kit, drum puller, brake adjustment gauge, and torque wrench capable of 450-500 ft-lbs for wheel bearings. The most challenging aspects are removing seized drums and properly adjusting slack adjusters. Plan for 2-3 hours per wheel for a complete brake job. Many customers report that having an air impact wrench and penetrating oil makes the job significantly easier, especially on trucks with high mileage or exposure to road salt.

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

OEM brake shoes typically use Meritor or Bendix friction material with 23,000-pound rating and last 150,000-250,000 miles under normal conditions. Quality aftermarket options like Gunite or Marathon offer similar performance at 20-30% less cost. The main differences are friction coefficient consistency and heat fade resistance. For severe-duty applications or mountainous routes, stick with OEM. For standard highway use, premium aftermarket shoes provide excellent value. Avoid economy brake shoes under $60 per axle set as they often have inconsistent friction material and shorter service life.

Why are my new drum brakes squealing or grabbing, and how can I fix it?

New brake squeal typically results from glazed drums, improper break-in, or contamination. First, ensure drums are turned or replaced if glazed or out-of-round (maximum 0.015" out-of-round). Properly break in new shoes with 20-30 moderate stops from 30 mph, allowing cooling between stops. Grabbing often indicates oil contamination from leaking wheel seals or over-greased S-cams. Check that you're using high-temperature brake grease sparingly on contact points only. If problems persist after 500 miles, drums may need resurfacing or shoes may have manufacturing defects requiring warranty replacement.

How often should I replace brake drums, and what are the wear limits?

Kenworth T880 brake drums typically last 300,000-500,000 miles with proper maintenance. The standard 16.5" x 7" drums have a maximum diameter of 16.620" (discard at 16.650"). The heavy-duty 16.5" x 8.625" drums discard at 16.750". Measure drums every 100,000 miles or during brake shoe replacement. Replace drums showing heat checks deeper than 0.035", cracks of any length, or severe scoring. Even if within specifications, replace drums after two brake shoe changes to ensure optimal contact and heat dissipation. Always replace drums in axle sets to maintain balanced braking.