Perform preventive maintenance on transmissions, differentials, carburetors, distributors, fuel pumps, injectors, steering systems, starters, generators, universal joints, hydraulic systems, air conditioning, air systems, pumps, brakes and electrical systems . Critical Daily Actions of Jones and Sons Employees: (1) Treat others as you want to be treated; (2) Be timely; (3) Work safely; (4) Continuously improve .