Gorman Thomas, Paul Molitor, Ted Simmons and Charlie Moore homered yesterday as the Brewers defeated the Royals, 8-5, in Milwaukee to take over first place in the American League East and drop Kansas City into second in the West.

The Brewers swept the three-game series and now have 125 homers in the 83 games before the all-star break. The 1961 New York Yankees set the season record with 240.

Moose Haas (5-5) worked 6 2/3 innings before giving way to Rollie Fingers, who allowed the last three Royals runs but got his 18th save.

"We're . . . not as torrid as we were a week or two ago," said Haas, "but we're getting five or six runs a game. That should be enough to win."

The Brewers trailed, 1-0, in the fourth when Thomas increased his league-leading home run total to 22.

In the fifth, with Milwaukee trailing, 2-1, Don Money singled, Moore doubled and Molitor hit his 10th homer. After Robin Yount reached on an error and was forced by Cecil Cooper, Simmons hit his 14th homer, off starter and loser Larry Gura (10-5), to give Milwaukee a 6-2 lead.

In the eighth, Hal McRae hit a two-run homer, his 14th, to raise his AL-leading RBI total to 79.