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Whirlpool wtw6400 rattling noise in final spin sounds like may be object in pump water is also leaking how to check and or replace

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For this model washer there are two pumps. The pump on the right hand side of the washer is the DRAIN pump, while the pump on the left is the recirc pump (as viewed from the front of the washer). The easiest way to access the pump(s) is to either tilt the washer backwards and work from underneath, or remove the back panel. I usually remove the back panel, AND work from underneath, If something is caught in the pump, be prepared that you may have a damaged pump that requires replacement. To replace either pump follow these steps:

1. Unplug the washer.
2. Remove drain hose from the standpipe at the wall, and use a shop vac to pull a vacuum on the drain line to suction all the remaining water from the wash tub. There is quite a bit of water that remains in the wash tub that needs to be drained BEFORE removing any of the drain hoses (this is normal, by the way). Not draining the washer can be a very messy experience.
3. With the water drained, disconnect the electrical connections from the pump and loosen the mounting screws that hold the pump in place.
4. Remove the hose clamps and disconnect the two drain hoses from the pump.
5. With the pump removed, inspect the inlet side to see if anything is lodged in the impeller. Inspect the pump for any obvious signs of damage. It is common for nails, screws and drill bits to get caught in these pumps as small items like this will fit through the holes inside the wash tub.
6. Reinstall pump using the steps in reverse order. If the pump does not function, you will have to replace it.

A replacement pump can be ordered on line at searspartsdirect.com. Just type in your COMPLETE model number (usually located along the wash tub opening) and the pump(s) will be located under the "Pump Parts" heading as either item number 1 (drain pump - part #W10049390) or 4 (recirc pump - part #8578573).

I hope you find this information helpful. If you require additional assistance, please let me know.

PS You can find these same pumps at repairclinic.com as well. The drain pump is a little more in price, but the recirc pump is listed a lot cheaper. Use the part number listed above for your search.

Posted on Sep 13, 2008

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It can be tempting to ignore washing machine noises, especially if the machine is still working. But washing machine noise is not only annoying, it can also be a sign of serious damage. When armed with a few tips, you can determine what problem may be causing your washing machine to rattle, and what you can do to stop it.

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2 Turn the drum by hand and listen for loud noises. If the drum itself is split or the 'spider' is corroded, broken or has come apart from the back of the drum it will create a loud noise on every turn of the drum. (When the bearings have gone bad, the noise is constant the entire time the drum is spinning.)

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Hello

bearings in the heater fan may get worn out or rust. If this happens, it may become very noisy, either grinding on the bearings, or scraping against the rust. If this happens you need to replace the fan motor. Sometimes, a fan blade may come loose, and you need to replace it.
Sometimes it's the motor that makes the noise you hear. The motor has bearings in it which may become worn or get rusty. When the bearings get worn, they allow the shaft to wobble which can get quite loud. If there is a spin seal leak, water may get inside the motor, washing the bearing grease away. If the spin seal is leaking, you'll notice water leaking from under the dishwasher. There is also a disc attached to the top of the motor called a slinger. It sometimes breaks off and spins around the motor's shaft while it turns, causing some noises. You will need to replace the motor if the bearings are bad. You also need to replace the motor if the slinger is broken as well.

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A rhythmic knocking or thumping sound may be caused the sprayer arms hitting something as they go around and around. Rearrange the dishes and resume the wash.

A clunking or clanking may be heard when the detergent cup opens; while a clicking sound may be produced by the timer or electronic control panel.

A solenoid makes a snap sound when it opens. This happens about six times during each load.

Pipes rattling or banging may be caused by a water hammer effect. Water hammer sounds are caused by a valve closing in the system, and yet the water in the pipe is still flowing because of its kinetic energy. The sound is caused by the water slamming into the closed section of pipe. A plumber can install an anti-hammer device.

Small objects can sometimes get stuck in the pump. When this occurs, you'll need to open the pump and then remove the item that is making the noise or replace the pump. The dishwasher pump is usually mounted directly to the motor and runs off the motor as well. The pump is also attached to the bottom of your dishwasher.
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Water-inlet valve
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Water-inlet valve An aging water-inlet valve can sometimes fail slowly, rather than all at once. It can shudder on and off rapidly, causing the incoming water lines to shake, rumble, and rattle--sometimes violently. If yours is doing this, replace the inlet valve.

Motor If it's the motor that's noisy, either of these may be the "culprit:"

  • As motor bearings wear out, they can become quite loud when the motor runs. They wear out quickly if they frequently get wet, because the water washes away the motor bearing grease. Bearings can get wet if the spin seal is defective. Then there will also be water leaking onto the floor beneath the dishwasher. Replace the seal if it leaks (read about the main tub seal in the "It leaks" section, later).

  • If, from beneath the dishwasher, you can see a round, plastic disc that's mounted to the top of the motor (a "slinger"), it may have broken free of the motor shaft. If so, it could be rattling around the shaft while the motor is running. If that's the problem, you need to replace the motor.

Heater fan If the heater fan bearings are rusted or worn, they may squeal, or scrape loudly during the drying cycle. If this is the problem, replace the fan motor. Alternatively, the fan blade may be loose. If so, you need to replace it.

Pump Small fruit pits, toothpicks, and fragments of glass sometimes get stuck in the pump. When this happens, open the pump and remove the debris. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher.

To get to the pump, you usually need to remove the lower rack, the spray arms, and the spray arm support from the inside of your dishwasher. A dishwasher pump isn't obvious. Look for an impeller--a round, plastic fan blade-type device that spins around and pushes the water toward the drain. When you can see the drain impeller, you should be able to see the clogging debris.

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