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Bosch Dishwasher spray arms are not turning

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I have a bosch dishwasher SHE55M05UC /50, the dishes are not getting clean, filling and draining seems ok but I noticed that the spray arms are not spinning/turning

Water gets to both arms but they do not spin. Drains fine. no clogs in arms. Any suggestions?
 

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How can I be sure that is the problem, and if so how long do you think it would take me to replace the part (first time I am doing this)

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Have you cleaned the filter and the sump area?

Does water ooze out of the holes in the spray arm or come out with force?

Have you tried manually adding water to see if a difference is made?

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How can I be sure that is the problem, and if so how long do you think it would take me to replace the part (first time I am doing this)

 

Brother Willie explains a simple check for the wash impeller:  http://appliantology.org/blog/1/entry-674-how-to-check-and-replace-the-main-circulation-impeller-in-a-bosch-dishwasher/

 

There's a how-to video in the part link that Brother jumptrout posted that takes you step-by-step through the repair.  http://www.repairclinic.com/PartDetail/Impeller-and-Seal-Kit/167085/935404

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Thanks is there a photo anywhere to show  where to find/access the impeller from inside the tub

 

While turning the impeller from inside tub have someone else watch the fan blades on the motor with a mirror under the machine.

Most likely you will find when turning the impeller the motor isn't actually turning, thus when motor is running, impeller isn't turning or is only turning very slowly from friction with back portion of impeller which front vane section has broken away from.
 

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Also is there a way to run a diagnostics on this model

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Diagnostics will not determine a bad impeller or poor water flow.

Starship Enterprise diagnostics will tell you if your phaser bank is low of charge,if warp drive is off line and if your tractor beam has no traction.

However,the lowly Bosch diagnostic is not as capable.

Edited by jumptrout
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Found the problem,  a plastic cap was lodged in the recirculator intake( right side under filter )?  under the filter, it as restricting water flow

 

all is good now

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Good work!  

 

And thanks for letting us know what you found!

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