C8.7 Marine Engines Caterpillar


Vibration Damper - Check

Usage:

C8.7 CS7

Viscous Vibration Damper




Illustration 1g03701638

The belt guard has been removed for illustrative purposes

(1) Vibration damper

The vibration damper is installed on the front of crankshaft. Damage to the vibration damper or failure of the vibration damper will increase vibrations. Damper damage or failure will result in damage to the crankshaft.

Replace the damper if any of the following conditions exist:

  • The damper is dented, cracked, or fluid is leaking from the damper.

  • The paint on the damper is discolored from excessive heat.

  • The damper is bent.

  • The bolt holes are worn or there is a loose fit for the bolts.

  • The engine has had a crankshaft failure due to torsional forces.


NOTICE

Inspect the viscous vibration damper for signs of leaking and for signs of damage to the case. Either of these conditions can cause the weight to contact the case. This contact can affect damper operation.


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