Perform and document preventive maintenance on all meters, gauges, recorders, charts, filters, belts, grease fittings, quench oil levels, lubrication levels, thermocouple checks, furnace internals, furnace mechanisms, safety devices, etc. to maintain proper work performance and a longer working life. Install, maintain, and repair all furnaces and equipment in accordance with diagrams, sketches, operation manuals, and specifications, utilizing knowledge of mechanics and electricity.