PLUG 2028132 - Caterpillar

Machines Powered By 3406, 3406B, Or 3406C Machine EnginesReference: Service Magazine; September 7, 1992; Page 12; "Major Engine Component Changes". Service Magazine; November 21, 1983; Page 10; "Service Information For Balancers And Dampers". Description of Change: A new rubber damper assembly is used on 3406C Machine Engines. The new damper contains an improved rubber material. The improved rubber material provides the following: * Increased temperature resistance* 25 percent higher damping* Improved resistance to stiffening with time* Improved bondingAdaptable To: The new 108-4096 Damper Assembly replaces the former 2P-5149, 4P-4297, 9Y-4851, and 108-4097 Damper Assemblies. The new damper assembly is effective with 3406C Machine Engine 11N7428. Do NOT use a rubber damper on engines originally equipped from the factory with a 2P-4645 or 7E-9520 Viscous Damper Assembly. The damper assembly part number is approximately 3.0 mm (.12 in) high, STAMPED on the front or back of the outer ring.