Gear Shifting; Gear Selection; Automatic Gear-Shift; Kick-Down Function - Komatsu WA270-3H Operation & Maintenance Manual

Wheel loader
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Operation

GEAR SHIFTING

CAUTION
Never select abruptly a lower gear when driving with high
speed, since this may damage the engine and gear mechanism!
Always reduce speed first, using the service brake, before you
select a lower gear.

GEAR SELECTION

Select the required or appropriate gear using the gear lever (1). Dozing
and loading operations are only to be performed in the 1st or 2nd gear.
Activate the gear lever limit-stop (2) when you carry out these operations,
since it will block the 3rd and 4th gear.

AUTOMATIC GEAR-SHIFT

This machine has an automatic gear-shift for the 2nd, 3rd and 4th gear.
This mechanism is only active if the 4th gear is selected with the gearshift
lever (1). The 1st gear cannot be automatically activated.
Position of
gear-shift lever (1)
1st gear
2nd gear
3rd gear
4th gear
(automatic)

KICK-DOWN FUNCTION

The kick-down function is recommended for driving in the 2nd gear to
perform dozing or loading operations.
The 1st gear can be selected at any time using the kick-down switch
(arrow), which is integrated into the work hydraulic control lever, by
pressing it briefly when the 2nd gear has been selected with the gear
lever (1).
If your machine is fitted with a multifunctional lever, you can activate the
kickdown function by pressing the toggle switch at the front of the multi-
function lever to position '1'.
2 - 46
Gear shifting in the gearbox
1st gear locked
2nd gear locked
3rd gear locked
↔ ↔
↔ ↔
↔ ↔
↔ ↔
2nd
3rd
4th gear (forward)
↔ ↔
↔ ↔
2nd
3rd gear
(reverse)
1
47 0 _ 9 0 3

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