Final drive unit, construction machine equipped with the same, and method of winding crawler belt

A method of winding a crawler belt on a sprocket of a final drive unit of a construction machine, the method comprising:

• placing the crawler belt on a floor in an unjoined state;
• placing a main unit of a construction machine including the final drive unit so that the sprocket is arranged on the crawler belt;
• joining one end of a wire-shaped member to one end of the crawler belt and then holding the other end of the wire-shaped member with a holding portion arranged on one of a hub portion and a cover member of a hub unit coupled to the sprocket, the holding portion being disposed in proximity to an outer end of the one of the hub portion and the cover member with respect to an axial direction of a rotational axis of the sprocket and the hub unit;
• and
• rotating the hub unit including the holding portion to move the one end of the crawler belt toward the sprocket as the wire-shaped member winds around the hub unit so that the crawler belt is mounted to the construction machine.