Heavy Duty Diesel Damper

Heavy Duty Diesel Damper

What is a Torsional Vibration Damper or Crankshaft Damper?

Torsional vibration is the slight twisting and rebounding motion of the crankshaft generated by the torque load of each power stroke.  A damper absorbs this harmful vibration and reduces the amount of rebound resonating back through the crankshaft.  Without a damper, torsional vibration can contribute to crankshaft failure, accelerated main bearing wear, and excessive gear wear or engine failure.  All of these scenarios can create unexpected costly downtime and increased maintenance costs.

Why do I need a High Performance American Made Vibratech Vibration Damper?

The Vibtratech TVDS viscous crankshaft dampers are made in New York State at an ISO 9001 accredited manufacturing facility.  The Vibtratech facility uses the latest CNC machining equipment and quality control procedures available to produce the best viscous damper on the market.

The benefits of reducing torsional vibration with a new Vibratech TVD damper installed at recommended intervals include:

  • Prolong engine life
  • Reduce the main bearing wear
  • Improve valve train timing
  • Lower risk of crankshaft failure
  • Improved fuel economy
  • Reduce driver fatigue
  • A noticeable reduction in mirror vibrations

When should the damper be replaced?

Over time on a heavy duty engine, the recommended change interval for most motors is 500,000 miles or 15,000 hours of run time. Your OEM dampers silicone begins to revert from its original state to a solid. As this progresses, the silicone becomes thicker and the reaction time or shearing of the inertia ring decreases. The reduction of crankshaft damper performance diminishes with age. This degradation has an incredibly negative effect on the dampers ability to absorb the different harmonics of the engine throughout its entire RPM operating range.

How can I tell when the engine damper requires replacement?

  • Excessive wear of engine bearings
  • Excessive wear of accessory drive gears
  • Cracked or broken attachment brackets
  • Loosening of bolts and fasteners
  • Throwing or slapping belts
  • A decrease of engine horsepower and torque
  • Reduced fuel economy
  • Annoying Vibrations
  • Increased driver fatigue

KLM Performance offers the Vibratech Viscous Crankshaft Dampers for the Class 8, Large Commercial Engines and Over The Road Truck Engines:

Your engine's harmonic balancer or crankshaft damper should be replaced at every major overhaul or in-frame. Professional truck owners, diesel mechanics, service advisers, and fleet managers all agree that replacing the harmonic balancer every 500,000 miles or 15,000 hours is a smart investment. This small preventative maintenance step provides financial returns over time by helping to maintain the operating efficiency and fuel economy of the engine, while reducing the risk of downtime.

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