Power Transformer Repairer
Repair power transformers used in electric generating stations.
Assembles mining machinery, such as continuous miners, loading machines, cutting machines, locomotives, hydraulic backhoes, and portable oil well drilling rigs according to blueprints and written specifications, using handtools, power handtools, and other powered equipment: Reads blueprints and written specifications to plan assembly sequence. Operates crane or directs OVERHEAD CRANE OPERATOR 921.663-010 to move structural framework and machine parts to assembly area. Studies blueprints to plan logical assembly sequence. Positions specified gears, drive shafts, bearings, clutches, and other component parts in housings on frame of machine, using electric hoist. Aligns and levels parts with spacers and shims, and sets clearance between parts, using micrometers, feeler gauges, calipers, and scale. Bolts cover plates, electric motors, and hydraulic pumps to machine frame in specified locations, using torque wrench. Lays out hydraulic hose on machine, away from moving parts, to facilitate servicing machine and connects hydraulic hose to pumps and specified fittings, using wrench. May measure and cut hydraulic hose for installation in machine. May clean parts preparatory to assembly, using solvent, cleaning cloths, and air gun. May assemble and test subassemblies, such as drive shaft, clutch, and transmission, using acetylene welding, heating, and cutting equipment and test stands. May install electrical wiring in assembled units according to schematic drawings. May drive mobile machinery to test performance.