In this case study featuring the new Vibratech TVD viscous damper (p/n 1341604) for Caterpillar C10, C12 and C13 engines, we visit G.W. Burnett trucking in Buffalo, New York.  Like most vocational fleet operators, G.W. Burnett makes short runs throughout a 150 mile radius and utilizes CAT engines in their Kenworth and Peterbilt trucks.  Their operation depends on reducing unexpected downtime and maximizing fleet efficiency.  Delivering on-time is key to maintaining their loyal customer base. 

As part of G.W. Burnett’s standard scheduled service, each truck receives a crankshaft damper inspection at 250,000 miles and replacement at 500,000 miles.  During a recent 250,000 mile inspection, technicians noticed a thick, sticky black residue scattered across the face of the engine.  Knowing that viscous dampers contain clear silicone and regular road debris would discolor it, they did not want to leave anything to chance.  If the damper was compromised, it would no longer protect the engine from the damage caused by torsional vibration.  It would eventually lead to unexpected downtime, a costly rebuild and lost operating revenue. 

For G.W. Burnett, the investment in a new Vibratech TVD damper outweighs the cost of lost revenue and disrupted customer service.   The new Vibratech TVD viscous damper (p/n 1341604) for Caterpillar C10, C12 & C13 applications was chosen for its superior reliability and heat dissipation over stock.  Precision machined and balanced to ISO 9001:2008 quality standards, it is rated with an industry leading 500,000 mile service interval.

Inspection
The crankshaft damper is an often overlooked critical engine component that needs periodic inspection and replacement.  Each engine is different; refer to your owner’s manual for service intervals and specifications.  In addition to inspecting the housing for warping or damage, inside a sealed viscous damper is a measured amount of silicone.  Silicone is a premium material used to dampen crankshaft torsional vibration and dissipates it as heat.  In heavy duty diesel applications where torsional vibration magnitude and heat is intense, silicone will gradually loses its maximum dampening efficiency.  Vibratech TVD recommends damper replacement every 500,000 miles or whenever an engine overhaul or in-frame rebuild is performed.

Installation
First, the Vibratech TVD damper is provided in raw steel with a rust preventative coating.  It is recommended to paint the damper to your color choice with high temperature engine paint prior to installation.  After the paint has cured then in-chassis installation can start. 

The Vibratech TVD #1341604 crankshaft damper is a direct bolt on replacement.  Total installation time for a qualified mechanic depends on the type of vehicle.  No special tools should be required.

Remove the accessory belt from the drive pulley.  Then the drive pulley is removed from the damper.  The damper is then removed from the crankshaft.  Remove all signs of rust from the crankshaft hub with a wire brush or wheel.

Install the Vibratech TVD replacement in the reverse order.  Torque damper bolts to factory specs.  Check the accessory belt path for clearance in the engine compartment prior to starting the engine.

When compared to a worn damper, you will immediately feel the difference with a new Vibratech TVD damper.  In addition to reduced vibrations, owners often regain lost horsepower and fuel economy with a smoother running powertrain.  

Testimonial
“Vibratech TVD understands the importance fleet owners have on reducing downtime.  For G.W. Burnett that means delivering a quality, dependable crankshaft damper to keep our fleet moving and our customers happy.”

Eric Bauer, General Manager
G.W. Burnett
Buffalo, New York