Komatsu — Komatsu PC308USLC-3E0 Hydraulic Excavator Operation & Maintenance Manual

. OPERATION DETAILED CONTROLS AND GAUGES Emergency Monitors CAUTION is a problem, the monitor for the abnormal (1) (2) Engine coolant temperature monitor Hydraulic oil temperature monitor (3) Engine oil pressure monitor Engine Coolant Temperature Monitor Monitor (1) warns operator that the engine coolant temperature has risen. If engine coolant temperature becomes abnormally high, monitor lights up red, overheat prevention system is automatically actuated, and the engine speed goes down. Stop operations and run engine at low idle until monitor (1) changes to green.

3 - 9 If the monitor lights up red, stop the e ngine i mmediat ely or run at low id le, check applicabl e location, then p erform necessary actions. These here location lights up red and buzzer s ounds , perfor m action immediately.