Komatsu HB365LC-3 Operation & Maintenance Manual page 111

OPERATION
Red range (A) position: Engine coolant temperature caution lamp (E) shows abnormality display.
Red range (B) position: Engine speed changes to low idle, engine coolant temperature caution lamp (E) shows
abnormality display and alarm buzzer sounds at the same time
The overheat prevention system continues to operate until the indicator enters the green range.
When the engine is started, if the indicator is at position (D), the engine coolant temperature caution lamp (E)
shows the low-temperature display.
In this case, perform the warm-up operation by referring to "METHOD FOR ENGINE WARM-UP OPERATION
(3-182)".
Display (G) when temperature is low: Caution lamp background
(K) is white.
Display (H) when temperature is correct: Caution lamp back-
ground (K) is blue.
Display (J) when the condition is abnormal: Caution lamp back-
ground (K) is red.
HYDRAULIC OIL TEMPERATURE GAUGE
Hydraulic oil temperature gauge shows the hydraulic oil tem-
perature.
If the indicator is in green range during operation, it is normal.
When the indicator nears the red range (A) during operation,
the hydraulic oil temperature has exceeded102 °C. Run the en-
gine at low idle or stop it, and wait for the hydraulic oil tempera-
ture to drop.
(A) to (B): Red range
(A) to (C): Green range
(C) to (D): White range
REMARK
When the indicator reaches the red range (A), the hydraulic oil temperature is as follows.
Red range (A) position: 102 °C or more
Red range (B) position: 105 °C or more
When the indicator is in red range (A) to (B), hydraulic oil temperature caution lamp (E) indicates abnormality.
When the engine is started, if the indicator is at position (C), the hydraulic oil temperature is 20 °C or below and
the hydraulic oil temperature caution lamp (E) indicates low temperature. In this case, perform the warm-up op-
eration by referring to "METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION (3-184)".
Display (G) when temperature is low: Caution lamp background
(K) is white.
Display (H) when temperature is correct: Caution lamp back-
ground (K) is blue.
Display (J) when the condition is abnormal: Caution lamp back-
ground (K) is red.
EXPLANATION OF COMPONENTS
3-39