836G Landfill Compactor and 834G Wheel Dozer Caterpillar

Illustration 1	g00546357

The crankshaft vibration damper is located at the rear end 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 to 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 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.

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

Inspect the vibration damper for dents in the outer case. Dents in the outer case may cause failure of the damper. Install a new vibration damper if the damper is damaged.

Reference: Refer to the Disassembly and Assembly manual for your machine's engine for the necessary replacement procedure.