Komatsu WA600-8 Operation & Maintenance Manual page 113

OPERATION EXPLANATION OF COMPONENTS
ENGINE TACHOMETER
The engine tachometer indicates the engine speed.
If the engine speed is higher than the allowable range during
operation, the engine overrun caution lamp lights up in red.
At the same time, the centralized warning lamp lights up and
alarm buzzer sounds intermittently.
Operate the machine with moderate engine speed and travel
speed.
ENGINE COOLANT TEMPERATURE GAUGE
Engine coolant temperature gauge shows the engine coolant
temperature.
When the indicator is in white range (A) or green range (B) dur-
ing operation, it is normal.
If the indicator is in red range (C), the engine coolant tempera-
ture caution lamp lights up in red, and action level "L02" is dis-
played.
At the same time, the centralized warning lamp lights up, alarm
buzzer sounds intermittently, and the engine output power is
automatically limited.
Stop the machine in a safe place, set the directional lever or directional selector switch to NEUTRAL position,
and run the engine at a medium speed with no load until the caution lamp goes out.
TORQUE CONVERTER OIL TEMPERATURE GAUGE
The torque converter oil temperature gauge indicates the tor-
que converter oil temperature.
When the indicator is in green range (B) during operation, it is
normal.
If the indicator is in red range (C), the torque converter oil tem-
perature caution lamp lights up in red, and action level "L02" is
displayed.
At the same time, the centralized warning lamp lights up and
alarm buzzer sounds intermittently.
Stop the machine in a safe place, set the directional lever or di-
rectional selector switch to NEUTRAL position, and run the engine at a medium speed with no load until the
caution lamp goes out.
HYDRAULIC OIL TEMPERATURE GAUGE
Hydraulic oil temperature gauge shows the hydraulic oil tem-
perature.
When the indicator is in the green range during operation, the
retarder oil temperature is normal.
If the indicator is in the red range, the hydraulic oil temperature
caution lamp lights up in red, and action level "L02" is dis-
played.
At the same time, the work equipment speed is limited auto-
matically.
Stop the machine in a safe place, set the directional lever or di-
rectional selector switch to NEUTRAL position, and run the engine at a medium speed with no load until the
caution lamp goes out.
3-45