Komatsu PC450-8 Operation & Maintenance Manual page 80

DETAILED CONTROLS AND GAUGES
Hydraulic Oil Temperature Monitor
If this monitor (2) shows low-temperature display (A), carry out
the warm-up operation. For details, see "Hydraulic Equipment
Warm Up (3-133)".
Carry out the warm-up operation for the hydraulic equipment
until monitor (2) shows 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
Fuel Level Monitor
This monitor (3) lights up to warn that the operator that the level
in the fuel tank is low.
When the remaining fuel level reaches approx. 80 liters, the
monitor lamp lights up red, so add fuel as soon as possible.
Charge Level Monitor
This monitor (4) warns the operator that there is an abnormality
in the charging system when the engine is running.
If the battery is not being charged properly while the engine is
running, monitor (1) lights up red.
If monitor lights up red, check the V-belt for looseness. If any
abnormality is found, perform the necessary actions. For
details, see "OTHER TROUBLE (3-196)".
Air Cleaner Clogging Monitor
This monitor (5) warns the operator that the air cleaner is
clogged.
If it lights up red, stop the engine and inspect and clean the air
cleaner.
For details of checking and cleaning the air cleaner, see
"CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT
(4-21)".
3-14
OPERATION