Komatsu GD555-5 Operation & Maintenance Manual page 67

OPERATION
EXPLANATION OF COMPONENTS
MAINTENANCE CAUTION LAMP
CAUTION
If the caution monitor lamp lights up, repair the problem as soon as possible.
When the starting switch is turned ON, this monitor (2) flashes or
lights up for approximately 30 seconds after the system check has
been completed if the oil change time is close.
REMARK
The maintenance caution lamp flashes when there are less than
30 hours to the replacement time, and after the replacement time
has passed, it stays on.
For details of the items covered by filter and oil replacement, see
"FILTER, OIL REPLACEMENT TIME DISPLAY (PAGE 3-11)".
In addition, this lamp lights up when the air cleaner element is
clogged. At this time, "AIR FILTER" is displayed on the character
display.
Clean or replace the air cleaner element.
WATER SEPARATOR MONITOR
This monitor (3) lights up in red to inform the operator that the water
separator is full of water. If monitor (3) lights up in red, stop the
engine and drain the water from the water separator.
For details of the method of draining the water from the water
separator, see "DRAIN WATER FROM FUEL PREFILTER (PAGE
4-26)".
REMARK
The water separator forms 1 unit with the fuel prefilter. It is at the
bottom of the fuel prefilter and can be removed.
3 - 14