TM2361 (24JUN08) 9010-05-22 450DLC Excavator Operation and Tests 062608 PN=270 Theory of Operation • Bucket Curl Pressure Sensor (B54) • Swing Pressure Sensor (B33) • Travel Right Pressure Sensor (B56) • Travel Left Pressure Sensor (B57) • Attachment Pressure Sensor (B45) • Counterweight Removal Pressure Sensor (B46) Auto-idle is activated when the following conditions are met: • Auto-idle switch is on. • No functions activated for approximately 4 seconds. • Engine speed is above 1030 rpm. Auto-idle control is deactivated when the following conditions are met: 9010 05 22 • Auto-idle control switch turned to OFF. • A hydraulic function is actuated.
• Power mode switch is turned from E to P or P to E. • Engine speed dial is turned to change engine speed. When auto-idle is deactivated, the engine rpm increases to the setting of the engine speed dial. JC89288,0000192 –19–27JAN06–4/4