DETROIT, Jan. 22 (AP) ?ÛÓ The first unit of the United Auto Workers union to vote on pay cuts to help save Chrysler Corp. approved the reduced contract overwhelmingly, the UAW said today.</br></br>'Hie Winfield Foundry unit in Detroit, part of Local .?Û÷1, voted 71 to 2 yesterday to accept pay cuts of about 1 3 percent after March, according to a UAW spokesman who asked not to be identified.</br></br>Those cuts and other concessions from UAW members are designed to save Chrysler $622 million by September 1982.</br></br>About 61,000 active and 47,000 laid-olf UAW members in the United States and Canada mast complete ratification votes by Feb. 2 before the Chrysler Loan Cuarantee Board will authorize $400 million in new loan guarantees for the struggling automaker.</br></br>Anticipating the board's approval, Chrysler said today it planned an offering of $400 million in guaranteed notes ?ÛÏin the near future.?Û? 'The notes would mature in a little over 10 years ?ÛÓ Oct. L5, 1990 ?ÛÓ and would l>e offered in registered form in $;),()()() denominations or multiples of that figure through a syndicate of underwriters headed by Salomon Brothers; Merrill Lynch White Weld Capital Markets Croup; E.F. Hutton & Co. Inc.; First Boston Corp., and Warburg Paribas Becker Inc.