Hello, I have a Bosch shu3006uc which I have let sit for years as I mostly do dishes by hand. We ran the machine recently and it squeals and leaks all over the floor. I am sure the seals got hard and brittle but not sure which parts to replace. I am willing to fix the machine but need to know if I should by the circulation pump kit #20 or a drain pump? Please advise, Thanks, Frank
Answer Hello Frank,
The squeal is from the seal sticking to the motor shaft from not being run for some time. The leak is most likely the same seal that is making the noise. This will be in the circulation pump since the drain pumps usually do no have this characteristic. Considering the design of this unit, I would recommend to replace the water valve also since they tend to stick after long periods of non-use. Since the water valve will normally stick in the open position, this is well advised to prevent water damage to the home.
My unit starts, fills with water, then pump quits. After short period a slight electrical smell occurs. Does this indicate a failure of the pump motor?
Answer Hello Mike,
This sounds like you either have a piece of debris in the pump or the motor windings 00239144 have shorted. I kind of doubt the latter, but the first is very possible as I have removed many toothpicks and bones form the pump impeller.
My Bosch will fill with water, but makes a loud noise the whole time, it kind of sounds like a can opener. There is no water pressure to the top arm, and the side hose that is supposed to send water out doesn't get any either. It runs the whole wash, but soap sits at bottom, and dish only get wet from steam. Is this the circulatory pump? If so, how does the repair kit work? Or is it an easier/cheaper fix? Thanks!
Answer Hello Alexander,
You need to remove the bottom rack and the filter assemblies. Down inside the top of the pump assembly is a plastic cover held in place by a single torx head screw. I don't remember the size exactly from memory, but i believe it's a T-10 or T-15. Remove this cover with a pair of needle nosed pliers. It will pull straight out once the screw is removed. Now use a wet-vac to clean it out. If you listen closely when doing this, if a foreign item is in there, you can hear it go in the wet-vac.Once all of the water and debris is removed, use a flashlight and inspect the impeller. It should sit up square on the motor shaft. I always spin it with my finger. If you feel the magnetic field from the motor windings, the impeller is fine. If it spins freely and flops around you will have to replace the circulation pump motor.
My dishwasher made an unusual noise and the drain motor operates with the door open. The normal control buttons do not seem to have any effect on the operation. Can you help us diagnose the problem? I noticed some water under the assembly. Is the pump assembly or seal bad? Thank you.
Answer Hello Carol,
The Bosch dishwasher has a moisture sensor, (flood sensor), in the bottom assembly that will shut off the units' ability to do anything but drain out. The drain pump will run as long as the moisture is sensed and nothing else will work on the unit until the moisture under there is dried up. Normally what I see in this case is a bad water inlet valve 00425458. Occasionally, there will be a leak around a hose or seal but this is a situation where a technician has to "clamshell" the unit to gain enough access to locate the leak.
Since the water inlet valve is the most common failure, I would change it before calling anyone for the more extensive repair. Also, while the old water valve is out, before you install the new one, I use this opening with a towel or paper towels to dry up the water that is in the base already. Doing so will enable the unit to operate again. You can, if you desire, leave the water valve off for a day or so with a fan blowing into the base to evaporate the moisture. This takes a while if there is water puddled in there so if this is the method you want to use, wick the majority out with the corner of a towel then use the air flow method to dry out the remaining moisture.