Four year old GDT545PGJ0WW dishwasher has me stumped.

[AkshaySharma]

You all will be so proud of me.

I grew up watching my dad fix everything. Vespa, a blender, electric motor of a fan....and today I fixed the motor of a circulation pump in my dishwasher.
After getting some pointers from the members on this forum, I was this close to ordering a new circulation pump for the dishwasher. The shipping and the delays would mean that I would get it on Tuesday. I still plan to order it and then keep it ready when the current one fails. BUT in the mean time, the cleaned and adjusted pump is purring nicely. I removed about a teaspoon of black powder, blew air in all creases and crevasses. Wiped the commutator clean, it looked pretty spotless and also tapped the carbon brushes closer to to the commutator, not sure if it did anything or not.

Long story short, the dishwasher is working. Few more cycles of testing and then I will put the insulation on it and then install it back in it's rightful place.
Thanks a lot for all your help.

 

[ECtoFix]

Pictures aren't showing up, but glad you got it.  Thanks for the update.

[Terry Carmen]

On 5/21/2020 at 7:26 AM, David Jero said:

Love this quote.

Sometimes you just have to call them as you see them. 8-)

 

[David Jero]

13 hours ago, AkshaySharma said:

I removed about a teaspoon of black powder, blew air in all creases and crevasses. Wiped the commutator clean, it looked pretty spotless and also tapped the carbon brushes closer to to the commutator, not sure if it did anything or not.

Long story short, the dishwasher is working. Few more cycles of testing and then I will put the insulation on it and then install it back in it's rightful place.
Thanks a lot for all your help.

I am sure you have saved it's life for a bit longer.  It is hard to believe that the manufacture choose to use a motor with brushes for a model that will potentially run for up to 3 hours once a day for 10-15 years. This reminds me of my grandpa's old drill or my dads old grinder. Brushes were common in the 50's-70's. I though we evolved from some old technology.  

Glad to hear and was happy to give you advice. Appliontology is a great resource full of some really great techs to give you a hand along the way. 

[AkshaySharma]

We ran our first full load last night and the dishes came out spotless this morning.

Now I will reinstall it back with the sound insulation blanket and all the other bells and whistles.
 

[AkshaySharma]

Now I am just thinking aloud here. It would be great to find the exact specs of the old tech motor and replace it with a new, brushless motor.

[David Jero]

On 5/23/2020 at 10:36 AM, AkshaySharma said:

Now I am just thinking aloud here. It would be great to find the exact specs of the old tech motor and replace it with a new, brushless motor.

NO, I think the new motor still has brushes.  

[Terry Carmen]

On 5/23/2020 at 10:36 AM, AkshaySharma said:

Now I am just thinking aloud here. It would be great to find the exact specs of the old tech motor and replace it with a new, brushless motor.

Honestly, I'd give up and just deal with it as-engineered.

A lot of how it works depends on things like motor power, gph, pressure, etc.

If you put in a more powerful motor, you'll probably find that the diverter doesn't work right, the wash arm is too fast and it leaks out the door.

 

[David Jero]

On 5/25/2020 at 12:45 PM, Terry Carmen said:

If you put in a more powerful motor, you'll probably find that the diverter doesn't work right, the wash arm is too fast and it leaks out the door.

Funny thing is that the new replacement motor does have a slightly larger impeller.  However maybe the motor is running at a slower speed now.. I don't know.