Komatsu PC22MR-3 Operation & Maintenance Manual page 100

Hydraulic excavator
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INSTRUMENTS AND CONTROLS
(3) Travel speed selection switch
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
versa.
When high speed is selected, the speed increase warning light
is lit on the indicators and warning lights display, see
"WARNING LIGHTS AND GAUGES (3-4)". When low speed is
selected, the warning light turns off.
REMARK
When the engine is started, the low speed is automatically
selected.
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.
(4) Working lights switch
It is a three-position switch used to turn on the working
headlamps.
The first click position (LED on) turns on the working headlamp
on the boom while the second click position turns on the
working headlamps on cab, if fitted.
3-12
WARNING
WEAM014500
FUNCTIONING

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