Komatsu WA380-8 Operation & Maintenance Manual page 161

OPERATION
HORN SWITCH
If you press the horn switch, the horn sounds.
KICKDOWN SWITCH
The kickdown switch is located at the top of the boom control
lever.
In the manual shift mode, each time the kickdown switch is
pressed while the machine is traveling in forward 2nd (F2) , the
gear speed is shiftted down to forward 1st (F1).
Use this switch to increase the rim pull during scooping.
While the shift range is in forward 1st (F1) in E mode, the work-
ing mode can be changed to P mode by pressing the kickdown
switch.
Use this switch to increase the rim pull further during scooping
or for scrape-up work.
In E mode
2nd
→
E mode
In P mode
2nd
→
P mode
In the auto-shift mode, if the travel speed is 10.5 km/h or slower, the kickdown switch operates and the gear
speed can be shifted down to 1st from any gear speed of the forward or reverse travel.
This function facilitates the load-and-carry operation.
When the travel speed is higher than 10.5 km/h, the gear speed is shifted down by one gear speed each time
the kickdown switch is pressed in the order F4, F3, and F2.
1st
→
E mode
1st
P mode
EXPLANATION OF COMPONENTS
1st
P mode
3-97