 Final assembly of the 797 is completed by Caterpillar field mechanics at or near the customer site.Before the dump body can be joined to the frame, the dump body components must be assembled and welded together by a dedicated team, requiring seven to ten days per dump body.Final assembly of one 797 requires a team of seven mechanics working in three shifts around the clock, for 20 days, in addition to the time required to assemble and weld the dump body.