Komatsu WB93R-5, Operation & Maintenance Manual

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INSTRUMENTS AND CONTROLS
81
15 - BACKHOE BOOM LOCKING BUTTON
This is a button that automatically returns to position OFF and
is used to couple the safety lock to the boom when the back-
hoe is not going to be used or when the machine travels on
roads.
Press the button (LED on) to lift the safety lock; this is indis-
pensable to position the boom correctly before the coupling
operation.
Release the button (LED off) to lower the lock and couple it to
the boom.
For the use of this button, see "3.6.1.1 pos. 8 - BACKHOE
BOOM LOCKING BUTTON".
16 - HAZARD FLASHERS
This button operates both direction indicators at the same time
and must be used whenever, while travelling on roads, the ma-
chine is temporarily parked/stopped on the roadway or in any
case in anomalous position.
17 - PARKING LIGHTS AND LOW BEAM SWITCH
This is a two-position switch; with one click it switches on the
parking lights and instruments, with two clicks it switches on
the low beam. The parking lights can be switched on even with
the machine at rest.
18 - FOUR-WHEEL DRIVE SWITCH
When pressed (LED on), this switch engages the four-wheel
drive. When the switch is pressed, also the warning light pos.
(2) on the front instrument panel comes on (see "3.3.1 pos. 2
- FOUR-WHEEL DRIVE WARNING LIGHT").
When pressed again (LED off), it disengages the four-wheel
drive.
IMPORTANT
q
When travelling at high speed and on roads, disengage
the four-wheel drive.
q
The four-wheel drive is automatically engaged when the
brake pedals are pressed, and only with the 4
th
gear en-
gaged.
RKA13990
RWA20210
RKA01820
RKA13870
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