PURPOSE: To allow a body to be lifted safely and positively in an extremely easy way by making the effective use of an elevating stand and the traveling function of a mobile working vehicle so as to perform work such as inspection- maintenance and cleaning of a raveling crawler easily with efficiency.

CONSTITUTION: An elevating stand 15 erected by the advancing action of a machine body so as to lift a body upward by the fixed distance from the ground is provided between the ground and the body provided with a traveling crawler 1. The elevating stand 15 is positioned on the outer side of the machine body and set near an operation control part 9.