Komatsu 530M Operation & Maintenance Manual page 73

Operation - Section 3
Page 3-30
Engine Coolant Level
The Engine Coolant Level Monitor light (3,
Figure 3-9) will illuminate, if the engine
coolant level is below the sensor for a
continuous period of 5 seconds. At the
same time, a fault code will be registered
in the Centry™ System. (Refer to CENTRY™ FUEL
SYSTEM DIAGNOSTICS later in this section.)
If this monitor lamp flashes and alarm buzzer sounds,
stop truck, shutdown engine, and add coolant as re-
quired.
Low Steering Pressure
The Low Steering Pressure Monitor light
(4, Figure 3-9) will illuminate if the steering
system pressure is below 1850 psi (12.8
MPa). The light may also indicate that the
wire from the switch to the transmission
controller is cut or broken.
Accumulator Pre-Charge
The Accumulator Pre-Charge Monitor
light (5, Figure 3-9) will illuminate, if the
accumulator nitrogen pressure is below
850 psi (5 861 kPa). The light may also
indicate that the wire from the switch to
the transmission controller is cut or broken.
Battery Charge Amps
The Battery Charge Amps Monitor light
(6, Figure 3-9) will illuminate, if the trans-
mission controller detects low battery
current at the ''R'' terminal of the alterna-
tor while the engine is running or if the
wire is cut. If the monitor lamp flashes, check the
charging circuit.
Check Engine
The Check Engine Monitor light (7, Figure
3-9) will illuminate if a problem occurs in
the Centry™ engine control system. The
light is also used to display the trouble
code.
(Refer to CENTRY™ FUEL SYSTEM DIAGNOSTICS
later in this section.)
Instrument Panel and Indicators
Parking Brake
The Parking Brake Monitor light (8, Figure
3-9) will illuminate if the transmission con-
troller detects that the parking brake is
applied or that the wire between the
switch and the controller is cut or broken.
Body Float
The Body Float Monitor light (9, Figure
3-9) will illuminate if the transmission con-
troller detects that the body is not seated
on the frame rail or that the wire from the
proximity switch and the controller is cut.
When the dump body control lever is set to any position
other than FLOAT, the Body Float Monitor lights up.
When traveling, always set the lever to FLOAT position.
Transmission Oil Temperature
The Transmission Oil Temperature Moni-
tor light (10, Figure 3-9) will illuminate if
the transmission controller detects that
the oil temperature is over 248°F (120°C)
Service Brakes Applied
The Service Brakes Applied Monitor light
(11, Figure 3-9) will illuminate (amber), if
the transmission controller detects that
the rear brakes have been applied, or that
the wire between the switch and the con-
troller is grounded.
Maintenance Monitor
The Maintenance Monitor lamp (12, Fig-
ure 3-9) will illuminate if the PMC (Power-
train Management Controller), detects
any of the following faults:
* Low oil brake cooling oil level
* Low hydraulic oil level
* Low battery liquid level
* Front oil brake cooling filter restricted
* Rear oil brake cooling filter restricted - Right side
* Rear oil brake cooling filter restricted - Left side
* Hydraulic Oil Filters Restricted
* Brake Disc Wear Indication - Right Front
* Brake Disc Wear Indication - Left Front
* Brake Disc Wear Indication - Right Rear
* Brake Disc Wear Indication - Left Rear
OM3006.3 04/98