1997/01/27 Caterpillar

Points To Remember When Replacing A Viscous Crankshaft Damper Assembly With A Rubber Crankshaft Damper Assembly {1205}

Usage:

Caterpillar Machines Powered By 3406, 3406B And 3406C Engines

SUPPLEMENT: 03/03/97

Service Magazine; January 27, 1997; Page 35;"Points To Remember When Replacing A Viscous Crankshaft Damper Assembly With A Rubber Crankshaft Damper Assembly"

The title of the article is NOT correct. The correct title follows:

Points To Remember When Replacing A Rubber Crankshaft Damper Assembly With A Viscous Crankshaft Damper Assembly

--------------- END SUPPLEMENT ---------------

Reference: Service Magazine; August 21, 1995; Page 9: "Recommendations For Inspection And Replacement Of Rubber and Viscous Crankshaft Dampers".

When replacing a rubber crankshaft damper assembly with a 7E-9520 Viscous Crankshaft Damper Assembly:

* The viscous damper must have a 9Y-8870 Plate installed on the outside of the viscous damper.

* The washers must be removed from the bolts that fasten the damper to the crankshaft so the bolts will have the proper thread engagement.

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