EMPLOYEE WAS SERVICING DOZER #1244 A D11CD. HE SAW NO ANTIFREEZE IN THE SIGHT GLASS AND LOOSENED THE RADIATOR CAP ONE CLICK. ANTIFREEZE STARTED SPRAYING OUT FROM UNDER THE CAP. THEN THE CAP BLEW OFF. HE WAS STANDING ON THE SIDE OF THE RADIATOR AND JUMPED OFF TO THE GROUND. EMPLOYEE BROKE HIS RIGHT ANKLE AND HAD SECOND DEGREE BURNS TO CHEST AND ARMS.