Pump disassembly Can't remove drain impeller from shaft. Need to replace motor shaft seal on Maytag dishwasher mod. DWC7302AAB

Separate the plumbing portion of the pump from the seal plate which is attached to the motor. The bolts will be a 9/16 inch hex head, that are visible facing the motor. Remove those bolts. That will then allow you to pull the motor and the seal plate away from the plumbing portion of the pump. Remove the diffuser which is covering the impeller, and then the impeller will need to be unthreaded off of the motors shaft. The motors shaft, will need to be locked. You can do this by removing the Cap on the backside of the motor and you can use whatever tool required to keep the shaft from spinning. Once you are able to lock the shaft, you can read the impeller... Note* some styles will have a screw in the middle of the impeller securing it to the motors shaft? This screw is Backwards thread, not normal thread. If your pump has this screw, need to remove it first, then you will be able to unthread the impeller off of the motors shaft.
once the impeller is removed, you can then remove the two halves of the shaft seal. Very carefully reinsert the new shaft seal into the proper places, just the way they were prior to you removing them.

Reassemble in backwards order as you disassembled everything.
good luck

You will need to disassemble the pump and check the impeller. remove any debris and try turning the impeller by hand. If it does not move or is dragging, you will need to overhaul the pump. Possibly a shaft seal leak has damaged the motor bearing(s). Replace the shaft seal and motor bearings. If the motor is badly deteriorated, you might need to replace the motor. Note... the impeller turns counterclockwise to loosen. you may need special tools to grip and hold the motor shaft and the impeller to prevent damage to the impeller. If the impeller is seized on the shaft from rust, you may have to break it to get it off. reassemble with teflon lubricant on the shaft threads when reinstalling the impeller. This will prevent seizure later.

HI. check the following areas for faults.

1. Air gap / Drain hoses
If there is an air gap (located in the sink, near the faucet), check to see if it is clogged. Unscrew the top cap and see if there is anything blocking inside. Note: If there is no air gap installed, the dishwasher might not drain properly.

If the drain hose is clogged, the dishwasher would not drain. If there is an air gap installed, it is very common that a hose going from the air gap into the garbage disposer is clogged. Remove and clean the hose. Make sure to reattach the hose before starting the dishwasher.

Note: If you recently had a garbage disposer installed, it is common to overlook removing the drain plug.

2. Broken belt
Some dishwasher models use a belt to drive the pump. Replace the belt if found broken.

Note: Sometimes the belt would just come off the pump. Even though it might not be broken, it is recommended that you replace the belt, because it is probably too stretched out.

3. Pump
Some models have two impellers inside the pump - one, wash impeller, takes care of the wash cycles, the other, drain impeller, drains the water out. If the drain impeller is broken (broken blades, shaft), the dishwasher would not drain. Replace any broken pump components.

4. Drain solenoid
Some models (for example most GE dishwashers) use a drain solenoid to drain water out. Sometimes the solenoid gets stuck, preventing the water from draining out. Try to free up the solenoid. If unsuccessful, you might have to replace the pump assembly.

5. Motor
If the motor is stuck, it is sometimes possible to free it up by manually spinning the motor.

Replace the motor if defective.

6. Timer
Replace if defective (note: uncommon problem).

Hi

Many times a complaint of noises ( grinding or scraping ) can be traced to a cracked impeller in many of the common motor and pump assemblies used today. Sometimes a poor washing complaint is common after this wash impeller has cracked. Remove power first before investigating.


The motor shaft has started to rust and swells out and this swelling cracks the upper impeller. Most times a new seal and impeller kit can cure this complaint but sanding and cleaning of motor shaft is required before replacing the new seals and impellers.

Please do rate the solution as FixYa and revert for further assistance.

Thanks
Rylee

If your dishwasher seems noisy, check these:
1. Water-inlet valve
2. Motor
3 Heater fan
4. Pump

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.
good luck
thanks for using FixYa

If your dishwasher leaks, check these:

Main tub seal
Door gasket or seal
Water-inlet valve
Hoses
Main tub seal Note…If the main motor of your dishwasher is mounted vertically, beneath thecenter bottom of the dishwasher, the following instructions probablyapply to you. But if your motor is mounted horizontally, the pump isn'tserviceable--you need to replace the entire pump and motor assembly.

Themain tub seal is beneath the drain impeller. It prevents the water inthe dishwasher from leaking out near the shaft of the motor. To get tothe seal, which is inside the dishwasher, remove the:

• Lower rack



• Spray arm



• Spray arm support



• Wash/drain impellers

Then pry the seal out of its housing and replace it.

Door gasket or seal Overtime, door gaskets and seals harden and lose their ability to sealproperly. You can't repair the seals. You need to replace them ifthey've begun to leak.

Water-inlet valve Thewater-inlet valve, itself, seldom leaks. But, the water-supply linefrom the house and the rubber tube leading from the valve to the insideof the dishwasher may leak. Tighten or repair/replace these asnecessary.

The water-inlet valve could mechanically stick open.When that happens, the water continues to flow into the dishwasher,which then floods your kitchen. Turn off the water supply to thedishwasher, and replace the valve.

Hoses Behindthe lower access panel on your dishwasher are several rubber or plastichoses. If the leak appears at a connection, try a new clamp. If thatdoesn't work, replace the hose.

hi there,
dishwasher leaking might be due to either of these causes, check these:

Main tub seal
Note… If the main motor of your dishwasher is mounted vertically, beneath the center bottom
of the dishwasher, the following instructions probably apply to you.
But if your motor is mounted horizontally, the pump isn't serviceable--you need to replace the
entire pump and motor assembly.

The main tub seal is beneath the drain impeller. It prevents the water in the dishwasher from
leaking out near the shaft of the motor. To get to the seal, which is inside the dishwasher,
remove the:

* Lower rack
*Spray arm
* Spray arm support
* Wash/drain impellers

Then try the seal out of its housing and replace it.

Door gasket or seal
Over time, door gaskets and seals harden and lose their ability to seal properly.
You can't repair the seals. You need to replace them if they've begun to leak.

Water-inlet valve
The water-inlet valve, itself, seldom leaks. But, the water-supply line from the house and the
rubber tube leading from the valve to the inside of the dishwasher may leak. Tighten
or repair/replace these as necessary.

The water-inlet valve could mechanically stick open. When that happens, the water continues
to flow into the dishwasher, which then floods your kitchen. Turn off the water supply to the
dishwasher, and replace the valve.

Hoses
Behind the lower access panel on your dishwasher are several rubber or plastic hoses. If the
leak appears at a connection, try a new clamp. If that doesn't work, replace the hose.

HI In most dishwashers, the water pump is located under the lower sprayer arm. This component pumps the water through the dishwasher. The pump has two impellers, top and bottom. These, as well as other components, can become clogged with food or detergent. Here's how to disassemble the pump:

Step 1: Remove the cap that holds the sprayer arm on.

Step 2: Remove the sprayer arm, the screen, the pump housing, a bolt, the upper impeller, the food disposer blade, a spacer plate, the impeller hood, a flat plate, an O-ring, and the lower impeller. Lay the parts out in order as you disassemble them so that you'll be able to reassemble them properly.

Step 3: Clean the parts thoroughly with a mild detergent solution. If any parts are worn, replace them with new ones made for the dishwasher.

Step 4: Replace any seals, such as the O-ring or other washers, with new ones.

Step 5: Reassemble the pump, keeping the parts in order.

To reach the water pump, remove the sprayer arm and screen and then the pump housing. Remove the bolt, and the pump components can be disassembled.

On some dishwashers, the lower impeller serves as a drain pump. This type of system usually has a reversible motor; machines with nonreversible motors have drain valves, as detailed previously. If your machine possesses this impeller pump system, and the water will not drain from the dishwasher, clean the lower pump impeller. This may solve the problem. Otherwise, call a professional service person. 

The most likely is either a defective drain pump or a clogged drain hose.

hi try this In most dishwashers, the water pump is located under the lower sprayer arm. This component pumps the water through the dishwasher. The pump has two impellers, top and bottom. These, as well as other components, can become clogged with food or detergent. Here's how to disassemble the pump:
Step 1: Remove the cap that holds the sprayer arm on.
Step 2: Remove the sprayer arm, the screen, the pump housing, a bolt, the upper impeller, the food disposer blade, a spacer plate, the impeller hood, a flat plate, an O-ring, and the lower impeller. Lay the parts out in order as you disassemble them so that you'll be able to reassemble them properly.
Step 3: Clean the parts thoroughly with a mild detergent solution. If any parts are worn, replace them with new ones made for the dishwasher.
Step 4: Replace any seals, such as the O-ring or other washers, with new ones.
Step 5: Reassemble the pump, keeping the parts in order.
To reach the water pump, remove the sprayer arm and screen and then the pump housing. Remove the bolt, and the pump components can be disassembled.
On some dishwashers, the lower impeller serves as a drain pump. This type of system usually has a reversible motor; machines with nonreversible motors have drain valves, as detailed previously. If your machine possesses this impeller pump system, and the water will not drain from the dishwasher, clean the lower pump impeller. This may solve the problem. Otherwise, call a professional service person.