SWITCH 0658935 - Caterpillar

Illustration 1 g01127166The crankshaft vibration damper can be viewed from the right side of the engine compartment.Damage to the vibration damper or failure of the vibration damper will increase torsional vibrations. These vibrations will result in damage to the crankshaft and other engine components. A deteriorating vibration damper will cause excessive gear train noise at variable points in the speed range.Caterpillar recommends replacing the vibration damper for any of the following reasons.
The engine has had a failure because of a broken crankshaft.
The S O S analysis detected a worn crankshaft front bearing.
The S O S analysis detected a large amount of gear train wear that is not caused by a lack of oil.Continue to use the crankshaft vibration damper if none of the above conditions are found or if the damper is not damaged.Refer to the Disassembly and Assembly, SENR9537, "Crankshaft Vibration Damper and Pulley - Remove and Install" in order to replace the vibration damper.