Komatsu PC450-8 Operation & Maintenance Manual page 78

DETAILED CONTROLS AND GAUGES
Hydraulic Oil Temperature Monitor
This monitor (2) warns the operator that the hydraulic oil tem-
perature has risen.
If the hydraulic oil temperature becomes abnormally high,
abnormality display (C) is shown.
Stop operations and stop the engine or run it at low idling until
the monitor changes to normal display (B).
Display (A) at low temperatures: Monitor background (D) is
white
Display (B) at correct temperatures: Monitor background (D) is
blue
Display (C) when condition is abnormal: Monitor background
(D) is red
Engine Oil Pressure Monitor
Monitor (3) lights up red if the engine lubrication oil pressure
goes below normal level. If monitor lights up red, stop the
engine immediately, check the lubrication system and level of
oil in the engine oil pan.
3-12
OPERATION