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Kenworth T680 Drum Brake Parts
Frequently Asked Questions About Kenworth T680 Drum Brake Parts
Will these drum brake parts fit my specific T680 model year?
Our drum brake parts are designed to fit Kenworth T680 models from 2013 to present. However, there are variations between early models (2013-2017) and newer models (2018+) due to updates in brake specifications. Always verify your truck's VIN and brake size (typically 16.5" x 7" for standard configurations) before ordering. If you're unsure, contact us with your VIN and we'll confirm compatibility.
What's the difference between OEM and aftermarket drum brake shoes, and which should I choose?
OEM brake shoes typically use premium friction material rated for 23,000 lbs axle capacity and come with exact factory specifications. Aftermarket options often provide comparable performance at 20-30% less cost, using quality friction compounds that meet FMVSS standards. For heavy-duty applications or frequent mountain driving, we recommend OEM. For standard highway use, quality aftermarket brands like Gunite or Webb perform excellently.
How difficult is it to replace drum brake components, and what tools do I need?
Drum brake replacement requires intermediate mechanical skills and specific tools including brake spring pliers, brake shoe hold-down tool, and a brake drum puller. The job typically takes 2-3 hours per wheel. Critical steps include proper spring tension adjustment and ensuring correct shoe-to-drum clearance (0.020-0.030"). Many customers opt for professional installation due to safety considerations and the need for proper adjustment.
How can I tell when my drum brake parts need replacement?
Key indicators include brake shoe lining thickness below 1/4 inch, scoring or heat cracks on drums exceeding 0.060" deep, excessive brake adjustment frequency (more than monthly), or increased stopping distances. Also check for oil contamination from leaking wheel seals, which requires immediate attention. Annual DOT inspections will flag shoes with less than 1/4" lining remaining.
Are brake hardware kits necessary when replacing shoes, or can I reuse existing springs and pins?
We strongly recommend replacing hardware kits with every brake shoe replacement. Springs lose tension over time, and pins can develop wear grooves. A complete hardware kit typically costs $25-40 per wheel and includes return springs, hold-down springs, pins, and adjusting hardware. This small investment ensures proper brake function and prevents premature shoe wear from weak springs causing improper shoe return.