The Supreme Court Monday declined to review the settlement between the Teamsters and the federal government of a civil racketeering lawsuit alleging that the union had long been under Mafia control and seeking to rid it of corruption.

The settlement barred union leaders from associating with Mafia figures and called for afederal judge to appoint three independent officers who would discipline corrupt officials, supervise elections and oversee union affairs.But lawyers for the Teamsters, the nation's largest union with about 1.5 million members, later objected to how the 1989 settlement was being carried out.

The union sought to prevent monitoring of local elections, it objected to the $100,000 operating fund for the three officers and it wanted to refuse to pay for any activities it considered outside the scope of the settlement.

The Teamsters said the monthly reports that it must send to its membership about the efforts to clean up the union allegedly violated its First Amendment rights and it objected to the "outside interference" in hundreds of local elections.

A federal judge in New York last October ruled against the Teamsters, saying it voluntarily entered into the settlement that was designed "to rid the union of the hideous cloud of corruption that envelops it."

A U.S. Court of Appeals then dismissed the union's appeal on the grounds that the judge was simply applying the terms of the settlement, not altering it in any way.

The Teamsters asked the Supreme Court to review the case, but the

justices in a one-line order refused.

The Supreme Court sided with the Justice Department, which argued that the fact-bound dis-pute over the meaning of the settlement does not merit further review.