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Kenworth T660 Fan Blades & Shrouds
Frequently Asked Questions About Kenworth T660 Fan Blades & Shrouds
Will these fan blades and shrouds fit my specific year model T660?
Most fan blades and shrouds for the Kenworth T660 are compatible with model years 2008-2016. However, there can be variations based on your engine type (Cummins ISX, PACCAR MX, or Caterpillar) and whether you have a standard or heavy-duty cooling package. Always verify your engine model and cooling system specifications before ordering. Check your VIN or existing part numbers to ensure proper fitment.
What's the difference between plastic and metal fan blades, and which should I choose?
Plastic (composite) fan blades are lighter weight, reduce engine load, and typically last 3-5 years under normal conditions. They're quieter and more fuel-efficient but can become brittle in extreme cold. Metal fan blades are more durable in harsh conditions and can last 5-8 years, but they're heavier and create more engine drag. Choose plastic for standard highway use and better fuel economy, or metal if you frequently operate in extreme temperatures or heavy-duty applications.
Do I need special tools or professional installation for fan blade and shroud replacement?
Basic hand tools are usually sufficient for most fan blade replacements, including wrenches, sockets, and screwdrivers. However, you'll need to safely secure the fan blade while removing mounting bolts to prevent rotation. Shroud replacement may require removing the radiator or other cooling components for access. The job typically takes 2-4 hours depending on your setup. Always disconnect the battery and allow the engine to cool completely before starting work.
How do I know when my fan blade or shroud needs replacement?
Replace your fan blade if you notice cracks, missing blade tips, excessive vibration, or unusual noise during operation. Check for bent or warped blades that can cause imbalance. Shrouds should be replaced if they show cracks, have broken mounting tabs, or no longer maintain proper clearance around the fan blade (typically 1-2 inches). Regular inspection during oil changes can help catch issues early and prevent catastrophic failure.
What's the proper fan blade to shroud clearance, and why does it matter?
Maintain 1 to 1.5 inches of clearance between the fan blade tips and shroud on all sides. This spacing is critical for proper airflow and cooling efficiency. Too little clearance can cause blade contact during engine movement, leading to damage. Too much clearance reduces cooling effectiveness by allowing air to bypass around the fan. When installing, check clearance at multiple points as shrouds can warp over time.