Determine operations sequences and methods to use when repairing, assembling, installing and check-testing these machines and equipment, including parts to be remachined, repaired or replaced, following and being guided by trade practice, manufacturers' drawings and specifications, installation layouts and sketches and verbal and written instructions. Basic Functions of the Job/Occupational Summary: This occupation requires the maintenance, repair, disassembly, installation and dismantling of various machines and equipment such as, fabricating machines, welding and processing equipment and material handling equipment, minor plumbing repairs.