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Leaking dishwasher Mark Corbelli 10-31-2007
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Posted by Mark Corbelli on October 31, 2007, 7:47 am
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.



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Posted by Cshenk on October 31, 2007, 4:45 pm
Let me know what yoi find out. Mine just started leaking this morning.


>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.
>



Posted by MLD on October 31, 2007, 2:10 pm

> Let me know what yoi find out. Mine just started leaking this morning.
>
>
> >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.
> >
>
Had a similar leak and it turned out to be the pump seal. Estimate was
about $350 to remove and replace. On line the pump assembly was about $135.
Dishwasher was 12 yrs old so went for a new one.
MLD



Posted by Mark Corbelli on October 31, 2007, 3:50 pm
So there wasn't a gasket where the pump motor entered the bottom of the
dishwasher that can be replaced?
>
>> Let me know what yoi find out. Mine just started leaking this morning.
>>
>>
>> >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.
>> >
>>
> Had a similar leak and it turned out to be the pump seal. Estimate was
> about $350 to remove and replace. On line the pump assembly was about
> $135.
> Dishwasher was 12 yrs old so went for a new one.
> MLD
>
>



Posted by Dave Martindale on October 31, 2007, 4:11 pm

>Had a similar leak and it turned out to be the pump seal. Estimate was
>about $350 to remove and replace. On line the pump assembly was about $135.
>Dishwasher was 12 yrs old so went for a new one.

What make of dishwasher? Was it one where the motor shaft is vertical
or horizontal?

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
expensive.

        Dave


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