Komatsu WA500-6H Operation & Maintenance Manual page 122

3.2 Explanation of components
16. Dimmer switch
This switch (16) is used to switch the head lamps between high
beam and low beam.
When the head lamps are at high beam, the high beam pilot
lamp lights up.
Position (a): Low beam
Position (b): High beam
17. Load meter cancel switch
(Option)
When carrying out operations using the load meter, it ispossible
to cancel the measured data.
When switch (17) at the top of the bucket control lever is
pressed, the data that were just added are cancelled and the
display returns to the value before the measurement was made.
The display can be cancelled within 15 seconds after the load is
displayed or before the next load is measured.
18. Kickdown switch
When the gearshift lever is in 2nd, if switch (18) on the head of
the lift arm control lever is pressed, the transmission will shift
down to 1st.
Use this when you need to increase the drawbar pull in digging
operations.
If the transmission is in auto-shift, and the travel speed is below
12.5 km/h (7.8 MPH) in any speed range when traveling in either
forward or in reverse, the kick-down switch is actuated and it is
possible to shift down to 1st.
This makes it easy to carry out load and carry operations.
Even if the travel speed is more than 12.5 km/h (7.8 MPH), this
switch can be used to shift the transmission down. Each time
the kick-down switch is pressed, the speed range will shift down
one range at a time (F4 -> F3 -> F2).
When the torque converter is in the lock-up condition (if
equipped), the lock-up is canceled.
REMARK
When canceling the kick-down, operate the directional lever. In
manual shift, the kick-down can be canceled by operating the
gearshift lever to any position other than 2nd. It is also possible
to cancel the kick-down by turning the starting switch OFF.
In auto-shift, if the travel speed becomes high after the kick-
down, the gear will be shifted up by the auto-shift.
In auto-shift, when traveling at more than 25 km/h (15.5 MPH) in
3rd or at more than 35 km/h (21.7 MPH) in 4th, even if the kick-
down switch is pressed, the transmission will not shift down.
This is to prevent overrun of the engine.
3-56
Operation
a
b
GK043124
GK050059
GK050059
WA500-6H – VEAM430100