A used crane should never be judged from appearance, operating hours or maximum lifting capacity alone. Before purchase, confirm the exact model and serial number first. Then inspect the load-bearing structure, boom, wire ropes, winches, hook blocks, outriggers, hydraulics, slewing system, safety devices and carrier or crawler components. Finally, compare the physical condition with operating hours, mileage, maintenance information and previous use. This inspection does not replace a formal crane examination required by the destination country. However, it helps an overseas buyer identify obvious risks before committing to a machine in Japan. The most useful approach is to follow a ...