I am troubleshooting a dishwasher I installed about six years ago. I decided
to look under it last week when a friend told me he had a leak under his. Lo
and behold I had major mush in the wood underneath it. I am waiting for
things to dry out before I pull it out so I am using a pie plate to catch
the water and to also try to observe when and why it's happening. So far,
the plumbing connections look good. It only leaks when it fills to wash, and
then for a while after the dishes are done. I think that this could mean
that the water that the pump can't totally remove is leaking out until it's
dry. So this could mean some kind of pump seal gasket? Can anyone point me
in the right direction? The washer works fine otherwise.
What make of dishwasher? Was it one where the motor shaft is vertical
GE dishwashers (sold under many names) have a horizontal motor shaft.
When the pump seal starts leaking, water creeps out of the pump along
the motor shaft and then gets slung all around by the rotating shaft,
but it stays out of the motor and bearings (which is good).
Our dishwasher started doing that a year ago. Fortunately, it's a
portable so we knew about it immediately - it started leaving a puddle
on the floor where it had been running. You can buy a kit of
replacement parts that include the pump seal and impeller, the food
chopping blade on the end of the shaft, and a few other pump parts, for
about $20 or $30. I replaced it myself and the dishwasher runs like new
again. There was no need to replace the motor or the pump housing.
On the other hand, Whirlpool-type dishwashers have a vertical motor
shaft, with the motor mounted under the pump. Apparently when the pump
seal leaks, you get alkaline water running down into the motor windings
and bearings, slowly destroying the motor if you don't catch it. And
it's a reversible motor, so I imagine replacing motor and pump might get
Mine was a GE. To repair you had to buy the whole pump assembly, Looked
easy to replace-a couple of clamps seemed to be holding the whole assembly
together. As long as I had to take the dishwasher out I figured that at 12
yrs I had my use out of it, so I went new. Actually, you don't realize just
how poor the old one was performing until you see the new one do its thing.
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