Residue on dishes Dish washer is maytag Dwy 7402 aab purchase in 1996 Soap residue, cleaned top spray arm, but cannot get the bottom off, is there a trick to it without breaking the plastic

Check the screen area around the sump right below the lower spray arm if it is built up with lime deposit then the wash pump is starving for water and cannot pump water to the upper spray arm this would also starve water to the drain pump.

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
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This model relies on the top spray arm to 'wash' the detergent out of the soap dispenser - and that is the problem. Your top spray arm will not be turning properly. Check the angled jet on the very tip of the arms for blockages with food or fruit pips etc - it's this angle only that makes the arms turn.
if blocked, clean out with a pin or wire, and running water - make sure you get every bit out. If not, buy a new spray arm. If the arm is split, you will need a new one.
Other problems may be low water level or a faulty circulation pump - BUT check the spray arms first.
Remember a dishwasher is NOT a garbage disposal unit, so scrape any food particles of plates etc before putting them in the machine. Run a dishwasher cleaner through with no load once in awhile.

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's Testimonial "explanation very clear. will give it a go and see how simple it was. thanks Ronnie " - ronnieshomes
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Hi,

The scum, film and white residue problems have started since the reduction of phosphates in dishwasher detergents.

Here is a tip that will help you to solve the problem of films, residue, and scum in your dishwasher.

Dishwasher Residue and Film on Dishes

heatman101

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Try the cascade new soap they have been changing the ingredents due to state requirments for the water treatment. also make sure spray arms and jet are free from food particles,also clean soap dispencer,If you want run CLR through dish washer no dishes to clean machine.Thanks

Pour 1 Cup of Muriatic Acid (Can be purchased at your local Pool Supply Store) into the bottom of the washer and a little in the soap dish. Run the Dishwasher through 5 cycles. Check to see If this helps. If not Try the same process with CLR house cleaner.

Had similar problem with our Maytag dishwasher--we removed all spray and screen components to the inner case, cleaned the intake screen below the lower spray arm, repaired a split upper spray arm, and inspected everything for cracks or other distortion. All of this helped some, but finally improved things by changing from liquid detergent to a "packet" type. Our water is somewhat hard and builds deposits on the screen at the bottom. Run a no-dish cycle with a cup of white vinegar in the bottom.

1. You have poor pressure coming from the pump. fix this by removing the racks from dishwasher and removing/cleaning the intake filter to the pump. It is located on the floor of the dishwasher. Use a wet vac if you have it to clean the entire area and anything that might be stuck down in the pump. you would be suprised what you find doen there. Don't be afraid to remove a few phillips screws to remove a cover to the impeller. After this all should work better/cleaner AND soap dish will be washed out too.

2. make sure dishes are not stacked to block the soap dish from water spray arms.

3. remove spray arms and clean them out, especially the spray tips. Hard objects will stick in their spray tips.

Good Luck

First clean the sprayer arm of all debris. In the back of most dishwashers there is a screen on the bottom that is often full of junk, debris and other stuff from dishes not being scraped off.

Clean that screeen off.

Run vinegar (1 cup) for a full cycle to help break down the lime and other build ups.

Check sprayer arm for debris and other objects. carefully pick it out with a small needle or sometimes even a nail works.

Try running dishes again to see if this helps.