To enhance the working effectiveness over the whole operations and reduce the labor of the operator.
A first operating device 40 is installed in the upper part of an outrigger box 6a provided in the rear of a vehicle body and is equipped in its lower part with a jack operating lever L to operate an outrigger jack, wherein the lever L is positioned between a pair of brake lamps 31 installed on the back of the vehicle body at a certain spacing in the direction across the vehicle body and at a level approx. equal to the brake lamps 31. A boom operating switch to move an expansion boom, a display to display inspection information, etc., and a switch for selecting the drive source of the expansion boom are installed in a position over the lever L and in the upper part of the first operating device 40.
OKAYASU YOSHIKIMI
OCHIAI KENJI
