5-30 BA ET18, 20, 24 en* 1.5 * et18_20_24b510.fm
5 Operation
The auxiliary hydraulics is enabled when the machine is started.
► Pressing button A changes over to boom swivel.
Additional control circuit – AUX I (option)
Set the ball valve on the revolving superstructure on the right to grab
operation.
Operating the additional control circuit
Oil flow to line on the right:
Press pedal 2 forward.
Oil flow to line on the left:
Press pedal 2 backward.
Fig. 164Changeover of boom swivel
A
Fig. 165Ball-type cock
Hammer
operation (sin-
gle-circuit
function)
Grab opera-
tion (dual-cir-
cuit function)
Fig. 166Boom swivel/auxiliary hydraulics pedal
2
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