Fits and assembles components according to assembly schematics, manuals and knowledge of machine construction to construct, rebuild, and repair machines using hand tools and power tools. Analyzes assembly schematics and specifications manual, and plans machine building operations. Verifies conformance of parts to stock list and drawings. Lays out hole locations and drills and taps holes on parts for assembly. Aligns components for assembly, manually or with hoist, and bolts, screws, dowels, welds, or rivets parts together, using hand tools, rivet gun, and welding equipment. Verifies alignment and tolerances of moving parts, using measuring instruments, such as dial indicators and thickness gauges. Tests operation of assembly by hand. Assembles, sets up, and operates machine to verify functioning, machine capabilities, and conformance to customer’s specifications. May form and fasten piping, fixtures, and attachments required to service machine with air, water, and oil. May install wiring and electrical components to specifications.