same problem, put washer on left hand side, remove six screws from bottom plate, pull back, find pump, follow drainage pipe back, pump is white ,remove one screw and twist counterclockwise, you may have to unclip drainage pipe, unplug electrical connector, now split pump in two by removing 3 screws, mark 2 halves for reassemlby,dont think the impeller comes out, but i found a very small washer in mine which was jamming the impeller,reassemble in rerverse order, fairly easy job
1 hour maybe, dont forget the electrical connector, i did, but all is well now
ben, March 2009