Responsible for the diagnosis of complex mechanical, electrical and pneumatic troubles: in the disassembly, repair, replacement, reassembly and adjustment of diesel or gasoline engines, clutches, transmissions, refrigeration units, and other automotive equipment, and in the performance of related duties under the general supervision of the foreperson. Checks, adjust, repairs, replaces, and /or cleans evaporator core filter, compressors, expansion valves, and all other electrical pneumatic and mechanical controls, relays regulators, alternators, valves, switches, wiring and other units.