Ken I have a Maytag model#MDBH950, the chopper shaft stripped out and replaced. impeller looks good,but it fills, then starts, but then the pump starts to cavatate and no water comes out of spray arms, water fill height looks ok can't find the problem.got any sugestions. P.S.When it starts it works for about 3 or 4 seconds then the pump starts to cavatate and no water from arms?
Answer Ken, Presumably you installed the motor seal kit WP6-919539 with the metal chopper shafts and installed it properly. The correct water level in that style dishwasher should partially submerge the heater element in the bottom of the tub, after a 3 to 5 minute fill and wash. If less than that, there's not enough water in the system, and the pump will cavitate. If the water level is in range then you'll need to check your detergent and rinse agent for "sudsing" or foaming, Bubbles in the water from the detergent or rinse agent will make the pump cavitate as well. Read More... Answered by AppliancePartsPros.com | Monday, June 16, 2014