The chairman of the board of Dynalectron Corp., the McLean-based technological services company, last week announced a restructuring of the company's top-level management in preparation for the anticipated retirement in 1984 of Charles G. Gulledge as chief executive officer.

Chairman Jorge Carnicero said the realignment of top-level management includes the establishment of a combined vice chairman of the board and chief executive officer position and formation of an office of the president. Also, the company's operating units have been divided into three major sectors: specialty contracting, technical services and petrochemical.

The promotions Carnicero announced were:

Gulledge has been elected to the position of vice chairman of the board and chief executive officer. He will also remain a director and member of the executive committee. Gulledge, who joined Dynalectron as president in 1960, has been president and chief executive officer since 1974.

Merlon F. Richards has been elected president and will continue as chief operating officer, a director and member of the executive committee. Richards, who joined the company in 1952, was named chief operating officer in 1975.

Daniel R. Bannister has been elected executive vice president to serve in the office of the president. He was assigned direct responsibility for technical services, corporate finance and administration and corporate long-range strategic planning. Bannister, who joined the company in 1953, was formerly senior vice president for the technical services group.

G. W. Walther Ewalt has also been elected executive vice president, to serve in the office of the president. He was assigned responsibility for all of the company's speciality contracting. He was formerly senior vice president for the electrical contracting group. Ewalt joined Dynalectron in 1963.