SERV1851 02/08
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Text Reference
311D/312D/314D HYDRAULIC EXCAVATORS INTRODUCTION
© 2008 Caterpillar Inc.
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INTRODUCTION The 311D/312D/314D Hydraulic Excavators incorporate design innovations and performance improvements from the 311C/312C/314C Hydraulic Excavator Series and are a direct replacement for them. The machines feature a new cab for greater operator comfort. The cab provides the operator with excellent visibility of processing equipment, trucks, and railcars. The cab, consoles, and joysticks have been improved to provide a better access and understanding of all functions. The 311D/312D/314D Hydraulic Excavators feature a hydrostatic drive system, Side-By-Side (SBS) pumps, Negative Flow Controlled (NFC) hydraulic system, and pilot operated control valves similar to the 311C/312C/314C. The machines have a monitoring system similar to that of the 320D. The 311D/312D/314D HEX is equipped with the C4.2 ACERT™ engine which meets U.S Environmental Protection Agency (EPA) Tier 3 and European Union Stage IIIa emissions control standards. NOTE: Illustrations of the 311D, 312D and 314D are used in this presentation. Where there is a significant difference it will be noted.
