Can I purchase just an impeller assembly for motor number 154700101 or do I have to buy the whole thing.
Unfortunately the manufacturer does not provide the impeller as a separate component and you would need to replace the complete motor assembly.
dishwasher has slow leak coming from the righthand portion of the motor assembly that is white plastic. Part #AP5272221. This slow drip runs down the side of the plate that is screwed into the bottom of the dishwasher with 2 star screws. Could this be seals, the housing, etc. there appears to be a small hole in the opening in the white plastic area, is this normal ( like a pressure releif ? ). Dishwasher runs find and drains fine, just the agrivating leak that needs to be wiped up each time it is used.
Answer Doug, If water is leaking from the hole in the pump, that would indicate the motor shaft seal has failed, the is usually referred to as a "weep hole". If the water is leaking from around the black portion of the motor or bracket, you'll need to check or replace the "O" rings and check the pump housing for cracks in the screw holes, the bracket shouldn't be an issue, but it applies pressure to the seals and secures the pump motor to the housing and forces the motor to seal to the "O" rings. Make sure the Torx screws are tight and not stripped when installed and tightenned.
Water leak underneath dripping from silver part on pump motor. Is pump bad need to replaced it?
If the unit is leaking from the silver part of the pump then yes the pump is bad and will need to be replaced.