TURN OFF POWER TO UNIT
REMOVE BOLTS ON TOP SIDE OF COMPRESSOR PUMP TO REMOVE PLATE. THERE ARE 2 SMALLER PLATES THAT COVER FLAPPER W/ 2 SMALL SCREWS ON EACH (MAKE NOTE OF SMALL TOP PLATE POSITION) REPLACE FLAPPER AND REASSEMBLE. THERE IS A GASKET ON LARGER PLATE THAT MAY NEED TO BE REPLACED.