HEATER GP-CAB 1317783 - Caterpillar

3500 Diesel Commercial EnginesSUPPLEMENT: 05/01/97Engine News, December 1996, Page 2, "New Rotocoil Assembly Used In Cylinder Head Groups"The subtitle indicated this article was intended for "All 3500 Diesel Commercial Engines", This is no longer correct. The correct subtitle follows:
All 3500 Diesel And Gas Commercial Engines
--------------- END SUPPLEMENT ---------------Description of Change: A new rotocoil assembly is used to rotate the inlet and exhaust valves in the cylinder head groups on these engines. The new rotocoil assembly will provide extended service life.Adaptable To: The new 133-3814 Rotocoil Assembly is a direct replacement for the 4P-2521 Rotocoil Assembly in the cylinder head groups on all 3500 Diesel Commercial Engines. In some applications the 4P-2520 Rotocoil Assembly was used. The 4P-2520 Rotocoil Assembly was serviced by a 4P-2521 Rotocoil Assembly and a 4P-2522 Shield. In these applications the 4P-2521 Rotocoil Assembly can be replaced by the new 113-3814 Rotocoil Assembly.