NEW YORK/LONDON, June 30 : The dollar gained on Tuesday and pushed the yen to its lowest levels since 1986, heightening expectations that direct intervention from Tokyo may be near and also putting the euro under pressure. The U.S. dollar climbed to as high as 162.50 yen and was last at 162.42, up 0.3 per cent. Japanese Finance Minister Satsuki Katayama reiterated that authorities were ready to respond appropriately at any time, but refrained from stronger rhetoric. "The dollar is the main