The spary arm on my bosch dishwasher wont spin.

It appears that your model is probably SHEM63W52N/01

Bosch cunningly hide the heater inside the pump housing and sell the pump and heater as one unit! Having said that, the heater usually works or it doesn't. When it comes on is controlled by a control unit, another expensive part. I was looking for a relay, but there isn't one.

The spray arms move by the water pressure making them spin. First of all I would remove them and check all the holes for blockages. Replace them and make sure they spin well by hand.

If you are inclined, strip the pump and make sure is is clear of blockages and the impeller spins well. Check the continuity of the heater element.

https://www.appliancepartspros.com/parts-for-bosch-shem63w52n-01.html

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The little holes in the spary arms can block with general gunge etc. We use toothpicks, skewers to clear them. That sometimes helps.

make sure the drive belts have not come off under the unit

Hi,

I have an older dishwasher also and recently my wife also complained about it not cleaning right... so me being the man I am tried in vain to clean the things... Bought new spray arms online and installed them in minutes...now the thing works like new... However I have also found that if the heating element goes bad then that also can mess things up bad... So I would buy new spray arms, and also check out the heating element to make sure it is working... Here is a tip that will help you with the online buying...

Dishwasher Spray Arms not Spinning

How to Buy Appliance Parts Online

A bad heating element causes many problems in dishwashers...

Dishwasher Problems The Heating Element not Working

Dishwasher Maintenance

Dishwasher Residue and Film on Dishes

heatman101

Asker

Hi,
Here is a tip that I wrtoe about why the dishwasher spray arms do not spin...

Dishwasher Spray Arms not Spinning
http://www.fixya.com/support/r4817172-dishwasher_spray_arms_not_spinning

heatman101

uasally it isnt the spinning of the spary arm that does the fill it is controlled or a timed fill then the motor comes on if there isnt enough water in the unit it will not have enough pressure really need more info though

bosch shu5312uc upper spray does not spin. pours water through the center section thus not propelling the arm. any ideas? should the upper arm have any o-rings

These parts can be replaced easily and reasosnably cheaply for example the top spray arm is about £20.00p. But you need the back water feed tube as well as the lower spray arm which should come as one package. (depending on model i'm going by bosch). You shouldn't have to pay more than £30.00p + p&p. Hope this helps.

• First, check water level. Start machine, wait until the machine begins main wash. Open the door, the water level should be just below the heater element. If too low replace inlet valve.

• If you can't hear the wash motor running or is just humming, the motor may be bad.

• To check if the food chopper is blocked or broken;

1. Remove lower spray arm by holding the arm and rotating the spray arm retainer.
2. In the back of the tub, unclip or remove the screw from the upper spray arm supply tube.
3. Rotate the lower spray arm support to the right while disconnecting the supply tube from it.
4. Remove the four torx screws from the sump cover, remove assembly.
5. There may be a primary filter in the left side of the sump, if so, remove the torx screw and the filter.
6. On the right side there is the chopper assembly cover. Remove the torx screw and cover to expose the chopper.

Hope everything goes well for you,

Regards

Richard

the spray arms are rotated by water coming out of angled jets, this water being forced round by the main circulating pump. suspect it may a fault with this pump