Theory of Operation Engine Speed Control System Operation Engine Speed Specifications Item Measurement Specification Engine Speeds 450DLC Slow Idle Speed 885 rpm Fast Idle—HP Mode Speed 1650 rpm Fast Idle—P Mode Speed 1650 rpm Fast Idle—E Mode Speed 1630 rpm Travel HP Speed 1750 rpm 9010 05 19 Auto Idle Speed 1030 rpm Continued on next page JC89288,0000192 –19–27JAN06–1/4 TM2361 (24JUN08) 9010-05-19 450DLC Excavator Operation and Tests 062608 PN=267