16H Motor Grader Caterpillar

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 to the other engine components. A deteriorating vibration damper will cause excessive gear train noise at variable points in the speed range.

Illustration 1	g00851685

Caterpillar recommends replacing vibration damper (1) 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.

• Fluid leakage is detected during inspection.

• The housing is damaged.

Refer to Disassembly and Assembly, "Vibration Damper & Pulley" for the procedure to remove the damper and for the procedure to install the damper.

The vibration damper can be used again if none of the above conditions are found or if the vibration damper is not damaged.

Note: Contact your Caterpillar dealer for further information.