CARRIER-PLANETARY 7T7156 - Caterpillar

Illustration 1 g02603956The crankshaft vibration damper (1) is located at the rear end of the engine compartment.Damage to the crankshaft vibration damper or failure of the crankshaft vibration damper can increase torsional vibrations. This can result in damage to the crankshaft and to other engine components. A damper that is damaged can 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 vibration damper is dented, cracked, or leaking.
The paint on the vibration damper is discolored from heat.
The engine has had a failure because of a broken crankshaft.
The S O S oil analysis detected a worn crankshaft front bearing.
The S O S oil analysis detected a large amount of gear train wear that is not caused by a lack of oil.Refer to the Disassembly and Assembly Manual, "Vibration Damper and Pulley - Remove and Install" for information about damper replacement.The vibration damper can be used again if none of the above conditions are found and the damper is not damaged.Consult your Cat dealer for further information.