Former major league catcher Bo Diaz was killed yesterday, crushed by a satellite dish he was installing at his home in Caracas, authorities said. He was 37.

Diaz, who played with the Cincinnati Reds, Boston Red Sox, Cleveland Indians and Philadelphia Phillies during a 13-year major league career, was installing the dish to pick up television programs from abroad, Caracas firefighters said. No details were available as to how the accident occurred.

Diaz, a Venezuelan, was playing for the Caracas Lions of the Venezuelan League this winter, apparently hoping to get back into shape to make a bid to return to the major leagues. After a Tuesday game against the Aragua Tigers in Maracay, he left the club because of a dispute with Manager Phil Regan, team officials said. . . .

New York Yankees executive Leonard Kleinman has been cleared by the major leagues of any wrongdoing in George Steinbrenner's payment to gambler Howard Spira, but Kleinman intends to continue his $22 million lawsuit against Commissioner Fay Vincent.

In a nine-page decision signed Nov. 15, Vincent said: "I have resolved all questions of knowledge, motive and credibility in this matter in favor of Mr. Kleinman." However, the commissioner added that Kleinman's credibility was damaged by "his surprising inability to answer some of the simplest questions in a straightforward manner."

Dominic Amorosa, Kleinman's lawyer, said he intends to continue the suit and plans to take public depositions from baseball investigator John M. Dowd Dec. 5 and from Vincent Dec. 12. . . .

The Senior Professional Baseball Association, revamped if not necessarily revitalized, began its second season yesterday. The league for former major leaguers 35 and over had eight Florida teams last year. This year, there are four. The league expanded westward, with teams in Sun City, Ariz., and San Bernardino, Calif.

Those teams will spend much of their time in Florida, while each Florida team will make separate six-game trips to the western cities. One team, the Florida Tropics, has no home.

Joining the league is Jim Rice, the former Boston Red Sox slugger. Some of the other familiar names include former Oakland A's relief ace Rollie Fingers, Cincinnati sluggers George Foster and Dan Driessen, former Kansas City center fielder Amos Otis, ex-Astros stars Cesar Cedeno and Jose Cruz, 284-game winner Ferguson Jenkins and former Oakland A's star pitcher Vida Blue.