Komatsu GALEO HM350-2 Operation & Maintenance Manual page 83

Articulated dump truck
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OPERATION
EXPLANATION OF COMPONENTS
SHIFT HOLD SWITCH
This switch (7) actuates the gearshift limiter.
Activating the shift hold function will restrict the automatic shifting
of the transmission to gear speeds below the gearshift lever gear
shifting.
The shift hold function can be canceled by [1] moving the gearshift
lever or [2] activating the shift hold switch located on the gearshift
lever.
The shift hold pilot lamp located on the machine instrument panel
will indicated the status of the shift hold function.
Before starting either up or down a range, pre-select the
transmission gear and maintain a machine travel speed which will
give you full control under all the anticipated conditions.
When the machine is running, the transmission may cause hunting (a repetition of shifting up and shifting down in
a short span of time), depending on the road condition, load condition and slope grade. In that case, press the shift
hold switch and run, holding a low gear speed, in order to protect the transmission as well as to ensure operator's
comfortability.
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