How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask The Home Smithy Your Own Question

The Home Smithy
The Home Smithy, Home Appliance Technician
Category: Appliance
Satisfied Customers: 9508
Experience:  30 years repairing appliances
Type Your Appliance Question Here...
The Home Smithy is online now
A new question is answered every 9 seconds

My Bosch SHU9916UC dishwasher washes the bottom rack fine,

Resolved Question:

My Bosch SHU9916UC dishwasher washes the bottom rack fine, but not the top. I took apart the gray channels to the sprayer under the top rack, and found no blockage. I cleaned some bits of debris (corn kernels, aluminum foil, fibers,etc.) from the very bottom, but the situation didn't improve. The sprayer moves with the top rack, and seats against the gray channel in the rear for water flow. There is no blockage. Is it improperly sealing? That's my theory. What's the fix or possible other solution?
Submitted: 4 years ago.
Category: Appliance
Expert:  The Home Smithy replied 4 years ago.

Hi. Welcome to JA.

The sealing of the upper spray arm should not change due to an impropper fit at the connection. The basket will not allow the door to close properly unless the connection is correct.

The only thing that cpould effect the cleaning ability of the upper spray arm is if the sprayer where it connects is worn out. It can cause a low pressure condition as all the water leaks out at the swivel point. It can also cause the arm to not turn. The arm not turnning is the most likely problem as far as the arm goes. This will be noticeable as there will be considerable slop at the connection point.

If the spray arm is ok, then the most likely problem will be a damaged or worn out impellar. This repair is not one that I recommend a novice DIYer attempt. It involves considerable disassembly of the unit.

I have posted a picture of the trouble shooting chart for your unit below.

Please let me know if you require further information.

Best, THS

graphic



Edited by The Home Smithy on 5/1/2010 at 7:36 AM EST
Customer: replied 4 years ago.
This unit is four years old. I have no reason to believe the impellar is damaged or worn out. Is there any way to check if this is the case?
Expert:  The Home Smithy replied 4 years ago.
By removing the filter you should be able to look at the impellar blades.
Customer: replied 4 years ago.
I did. Removed the filters and the impellar blade cover. I do not see any damage. When I turn the blade, it has resistance, then quickly releases and turns a couple of times, so I don't think there's a broken belt, or whatever drives it. Could it be anything else, in your experience? I already had the flow chart.
Expert:  The Home Smithy replied 4 years ago.

Ok.
If you felt resistance in the impeller and then it turned freely after the first turn or so then you may still have a problem with the impeller or the motor that drives it.

The resistance of the impeller should be consistent at any point in either direction.

Try this; try spinning the impeller both directions. Spin it more than a few times all the way around, both ways. Do that a couple times to be sure that it doesn't again become harder to turn.

If it does then again further disassembly will be needed to determine what is causing the resistance.

If the motor is having to drive the impeller with resistance applied to it then the lower speed of the impeller turning will greatly reduce the amount of water pressure sent to the spray arms. This will seriously impact the ability of the unit to clean the table ware on the top rack while still doing a good job on the lower rack.

If it checks out as good then run the unit for as long as it takes to fill it and begin the wash cycle. Stop the cycle and set it to drain the water and turn off. This will warm up the components and may show something.

Once again check the impeller. If it is free then it should be ok. The first time may have been a coincidence. If you again feel resistance and then a freeing of the impeller something isn't right. Further disassembly will be needed to accurately diagnose the unit.

Please let me know what you come up with.

Best, THS



Edited by The Home Smithy on 5/1/2010 at 7:13 PM EST
The Home Smithy, Home Appliance Technician
Category: Appliance
Satisfied Customers: 9508
Experience: 30 years repairing appliances
The Home Smithy and 3 other Appliance Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
< Last | Next >
  • Thank you for the expeditious answer. It's good to know you're out there and awake in the wee hours when I finally have time to ask questions about my Jenn Air. Jean Riverhead, NY
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy Bagley, IA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
< Last | Next >
  • http://ww2.justanswer.com/uploads/docjohn174/2008-12-13_170143_johnask.jpg John's Avatar

    John

    Home Appliance Technician

    Satisfied Customers:

    13442
    Appliance repair business owner for over 43 years.
  • http://ww2.justanswer.com/uploads/tomgoe/2011-01-04_021913_2008-03-03_183612_phpexrmok_c2pm.jpg Tom Goellner's Avatar

    Tom Goellner

    Home Appliance Technician

    Satisfied Customers:

    1191
    32 yrs. experience servicing major appliances and HVAC equipment.
  • http://ww2.justanswer.com/uploads/MD/md2020/2012-6-6_20648_Selfpic.64x64.jpg Tyler Z.'s Avatar

    Tyler Z.

    Appliance Doc

    Satisfied Customers:

    51307
    7+ years being an appliance technician with factory training.
  • http://ww2.justanswer.com/uploads/bryanpaul52/2009-2-18_12031_0918081611.jpg Bryan's Avatar

    Bryan

    Home Appliance Technician

    Satisfied Customers:

    11158
    15 yrs. experience as a certified appliance technician.
  • http://ww2.justanswer.com/uploads/SM/smitty1486/2011-3-1_0145_Snapshotofme1.64x64.png Kelly's Avatar

    Kelly

    Appliance Technician

    Satisfied Customers:

    6493
    Highly accurate diagnostician with over 30 years experience!
  • http://ww2.justanswer.com/uploads/TH/TheHomeSmithy/2011-8-13_11146_homesmithy.500x500.64x64.jpg The Home Smithy's Avatar

    The Home Smithy

    Home Appliance Technician

    Satisfied Customers:

    5935
    30 years repairing appliances
  • http://ww2.justanswer.com/uploads/TE/Teamcold/2012-6-15_15028_HomeRepairsquarecopy.64x64.jpg Barry G.'s Avatar

    Barry G.

    Home Appliance Technician

    Satisfied Customers:

    5039
    27 years in home appliance repair. EPA refrigerant transition and recovery certification type I & II.