Working Mode - Komatsu PC78US-6 Operation & Maintenance Manual

MACHINE OPERATIONS AND CONTROLS

WORKING MODE

By using the working mode selector switch to select a working mode that matches the operating condition, it is
possible to carry out operations efficiently.
Use the following procedure to make effective use of each working mode.
Active Mode (for heavy-duty work) and E Mode (for work focusing
on fuel consumption ratio) are alternated, every time the working
mode switch is depressed.
REMARK
Active Mode (for heavy-duty work) is automatically selected, when
the engine is started.
Working mode
Active mode
(for heave-load operations)
E mode
(For work focusing on fuel
consumption ratio)
*: This is the engine rotation when the fuel adjusting dial is set at the FULL position and no load is applied.
REMARK
When the working mode is switched from Active Mode to E Mode with the fuel adjusting dial set at the FULL position,
the engine rotation somewhat drops, but that is nothing unusual.
3 - 90
Lamp (E) Applicable operations
Goes off Normal digging, loading operations
Normal digging, loading operations
Lights up (When importance is placed on fuel
consumption ratio)
OPERATION
Set rotation during work* (rpm)
2,020 50
1,850 100