Komatsu PC18MR-3, Operation & Maintenance Manual

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INSTRUMENTS AND CONTROLS
88 WEAM012101
4. Travel speed selection switch
WARNING
q
When loading or unloading the machine on/from a trailer,
always travel at low speed. Never operate the travel speed
selection switch during the loading or unloading operation.
q
If the translation speed shifts from high to low while the
machine is moving, the latter may swerve to one side even
if moving straight on. Stop the machine before shifting
translation speed.
The switch is placed on the blade control lever knob centre and is
used to select the translation speed. Each time the switch is
pressed, the translation speed shifts from high to low or vice ver-
sa.
When high speed is selected, the speed increase warning light is
lit on the indicators and warning lights display, see "3.2.1.3
WARNING LIGHTS". When low speed is selected, the warning
light turns off.
NOTE
q
When the engine is started, the low speed is automatically se-
lected.
When the machine travels on soft ground or up a slope at high
speed and the load increases, the low speed is automatically
selected, but the speed increase warning light remains on.
When the load is reduced, the travel system automatically
changes over to high speed.