Komatsu WA480-8, Operation & Maintenance Manual

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The work equipment lock switch (1) is a device used to lock the
operation of the work equipment.
Keep pulling the lock (2) of switch in the direction (b) shown by
arrow and push it into the direction (c).
The switch automatically returns to its original position when re-
leasing your hand from the switch.
The work equipment is locked (the pilot lamp lights up) or un-
locked (the pilot lamp goes out) each time you push the switch
into the direction (c).
Even if you may turn the starting switch to OFF position with
the work equipment unlocked (pilot lamp goes out), the work
equipment is locked (pilot lamp lights up) if you turn the starting
switch to ON position again.
GEAR SPEED SWITCH
The gear speed switch is used to change the gear speed of the machine.
MANUAL SHIFT
A desired gear speed can be selected from the 4 forward and 4
reverse gear speeds by turning the gear speed switch to that
gear speed position.
Use the 1st and 2nd gear speeds for work and the 3rd and 4th
for travel.
Position (a): 1st speed
Position (b): 2nd speed
Position (c): 3rd speed
Position (d): 4th speed
AUTOMATIC SHIFT
The gear switches automatically among 2nd to 4th gear speeds
in each travel direction, depending on the travel condition.
Position (a): 1st speed
Position (b): 2nd speed
Position (c): 3rd speed
Position (d): 4th speed
The table shows the range of the gear speed that is automati-
cally shift by the gear speed switch position.
Gear speed switch position Gear speed
2nd 1st
⇔
2nd
3rd 1st
⇔
2nd
⇔
3rd
4th 1st
⇔
2nd
⇔
3rd
⇔
4th
OPERATION EXPLANATION OF COMPONENTS
3-105