Komatsu WA480-8, Operation & Maintenance Manual

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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)
or higher gear speed, the transmission is downshifted by one
gear speed.
Use it to increase the rim pull during scooping.
While the shift range is in FORWARD 1st (F1) in E light mode
or E mode, the 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 light mode/E mode:
2nd
E light mode/E mode
→
1st
E light mode/E mode
→
1st
P mode
In P mode
2nd
P mode
→
1st
P mode
In the auto-shift mode, if the travel speed is 12 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 12 km/h or higher, the gear speed is shifted down by one gear speed each time the
kickdown switch is pressed as F4, F3, and F2 in this order.
EXPLANATION OF COMPONENTS OPERATION
3-94