p>Mobility â frequent standing and walking; occasional pushing, pulling, balancing, bending, twisting, climbing, kneeling, squatting; Lifting/Carrying â frequently 50 pounds or less; occasionally 51 â 70 pounds; Dexterity â frequent handling, reaching, grasping, and fingering; Hearing/Talking â frequent hearing and speaking normal speech and speaking loudly over equipment noise; occasional hearing/talking on a radio; Visual â frequent use of good overall vision, at normal or corrected to normal acuity; frequent use of depth perception and peripheral vision; occasional reading and close-up work; Environmental â frequent exposure to dirt, dust, smoke, fumes, and odors; occasional exposure to varied weather conditions or working with hazardous materials; Emotional/Psychological â frequent concentration and working independently; Special Requirements â occasional working overtime, weekends, nights, holidays and/or emergency call-back; occasional travel. Diagnose trouble in diesel engines and heavy Public Works equipment; operate various testing and repair equipment and follow automotive and equipment diagrams; perform acetylene and electric welding; use tools, machines and testing instruments of the trade; understand and carry out oral and written instructions.