Komatsu WA320-5H Operation & Maintenance Manual page 76

OPERATION
lamp and central warning lamp light up and the alarm buzzer
sounds intermittently.
At the same time, "E02" and "BRAKE OVERHEAT" are displayed on the character display in turn, so take the fol-
lowing action.
1. Release the accelerator pedal and move the speed range selector switch down one range to reduce the travel
speed.
2. Avoid using the brake.
3. Do not keep the brake pedal depressed continuously; use the brake only intermittently.
If use of the brake is reduced for a short time in the way recommended above, the axle oil temperature will go
down and the caution lamp will go out.
PARKING BRAKE REMINDER CAUTION LAMP
This lamp (2) lights up when engine is stopped but the parking
brake is not applied.
At the same time, the central warning lamp lights up and the
alarm buzzer sounds intermittently.
When the parking brake is applied, the lamp goes out and the
buzzer stops.
HST OIL TEMPERATURE CAUTION LAMP
This lamp (3) lights up to warn the operator that the HST oil
temperature has risen.
During checks before starting (when the starting switch is
turned to the ON position but the engine is not started), this
monitor does not light up.
During operation (engine running)
When the HST oil temperature goes up, the HST oil tempera-
ture caution lamp and central warning lamp light up, and the
alarm buzzer sounds intermittently.
At the same time, "E02" and "HST OVERHEAT" are displayed
on the character display in turn, so stop the machine and run
the engine at a midrange speed under no load until the lamp
goes out.
EXPLANATION OF COMPONENTS
3-17