Komatsu D155AX-8E0, Operation & Maintenance Manual

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SPEED RANGE DISPLAY
The gear speed display section indicates the following informa-
tion.
The travel gear speed of the machine (F1 for FORWARD 1st,
R2 for REVERSE 2nd) is displayed in top left area (a).
The gear shift mode is displayed in top right area (b).
The preset mode is displayed in bottom area (c).
In addition, when the automatic gear shift mode is selected, the
“AUTO” mark is displayed, and when the manual gear shift
mode is selected, the “MAN” mark is displayed in the bottom
left area (d).
METER DISPLAY
MULTI GAUGE
The multi gauge can display various items. As an example, dis-
play of the engine tachometer is explained below.
If the indicator is in green range during operations, it is normal.
When the indicator goes beyond (A) of red range during opera-
tions, the engine speed is too high. Decrease the travel speed
in this case.
(A) to (B): Red range
(A) to (C): Green range
For other items displayed by the multi gauge, see “METHOD
FOR USING MULTI GAUGE (3-58)”.
ENGINE COOLANT TEMPERATURE GAUGE
Engine coolant temperature gauge shows the engine coolant
temperature.
If the indicator is in green range during operations, it is normal.
When the indicator goes beyond (A) of red range during opera-
tions, the overheat prevention system is actuated.
(A) to (B): Red range
(A) to (C): Green range
(C) to (D): White range
The overheat prevention system is actuated as follows.
Red range (A) position: Engine coolant temperature caution
lamp (E) shows abnormality display.
Red range (B) position: Engine speed changes to a middle level, 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.
EXPLANATION OF COMPONENTS OPERATION
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