Maytag Dishwasher DWU7400AAE Not cleaning dishes properly

The Pump Filter is an OEM part for Whirlpool dishwashers. This filter traps debris and prevents it from entering the pump, thereby protecting the pump and ensuring the efficient operation of the dishwasher.

Causes of a bad pump filter can include clogging due to food particles and debris, wear and tear over time, or physical damage from sharp objects or improper cleaning.

Symptoms of a bad pump filter include:

• Poor drainage or standing water in the dishwasher
• Unusual noises during the wash cycle
• Reduced cleaning performance
• Frequent clogging or blockages

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

Upper wash arm retaining clip.

This impeller assembly replaces a worn or damaged wash-pump impeller to help restore water circulation and spray pressure for better cleaning. Commonly used in compatible Whirlpool wash pumps to address weak wash performance. What it does:

• Spins inside the wash pump to move water through spray arms; damaged fins reduce spray force and cleaning.
• Restores proper flow during wash cycles — symptoms of failure include weak or uneven cleaning.
• Reduces abnormal pump noise and motor strain when the impeller is intact; cracked or missing fins can cause humming or grinding.
• Works with the pump housing and seals to route water; a failed impeller can allow internal leakage or cavitation.

• Always disconnect power (and water, if applicable) before servicing the appliance.
• Inspect pump seals, gaskets, and surrounding components; replace any damaged parts to prevent leaks.

This O-ring seal fits into a groove to create a tight, leak-resistant barrier where two parts join. Replacing a worn O-ring helps stop drips at connections and keeps your appliance running reliably. What it does:

• Forms a compressible seal between mating parts (fittings, housings, or tubing)
• Helps prevent water or fluid leaks at joints
• Maintains proper pressure and flow within the sealed path
• Replace if you see seepage at the connection or the ring is cracked, flattened, brittle, or swollen

• 1 O-ring seal

• Disconnect power and shut off water supply before servicing
• Clean the groove and mating surfaces; remove debris that could compromise the seal
• Lightly lubricate with manufacturer-approved silicone grease; avoid petroleum-based products
• Seat the O-ring without twisting; reassemble carefully and check for leaks after testing

The Water Inlet Valve is an OEM part for Whirlpool dishwashers. Located at the back of the dishwasher, this valve controls the flow of water into the dishwasher during wash cycles.

Causes of a bad water inlet valve can include mineral buildup accumulating inside the valve over many uses, wear and tear on the valve internals from constant opening and closing, or electronic component malfunctions.

Symptoms of a bad water inlet valve include:

• No water entering the dishwasher when starting cycles
• Water level issues where too much or too little water enters the tub
• A leak developing around the valve area or connection line

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

This snap-in outlet connector secures wiring to an appliance control or harness and restores a reliable electrical contact. Designed for a direct, tool-assisted snap fit, it helps eliminate loose or intermittent connections. What it does:

• Provides a secure snap-in electrical connection between wiring and the appliance harness or control
• Restores power flow when a worn or damaged outlet causes intermittent operation or no power
• Prevents arcing and poor contact that can result from loose terminals
• Matches OEM fit for straightforward replacement when the original snap outlet is broken or missing

• Disconnect power to the appliance before inspecting or replacing electrical parts
• Remove access panels as required to reach the outlet; replacement typically snaps into place
• Verify correct orientation and full seating of the connector to ensure a solid contact
• If corrosion or wiring damage is present, replace or repair wiring per OEM guidance

This wax motor is the actuator for the dishwasher's rinse aid dispenser, releasing rinse agent at the correct time in the cycle. Replacing a weak or failed unit restores consistent rinse aid dispensing and helps minimize spotting.

• Actuates the rinse aid dispenser by extending a plunger when energized
• Works with the control to meter rinse aid during the final rinse
• Failure symptoms can include rinse aid not dispensing, the level never dropping, and increased spotting/filming on dishes
• Dispenser may remain closed with no audible actuation during the cycle

• Disconnect power at the breaker and shut off water before servicing
• Remove the door panel to access the dispenser; label and disconnect wires
• Release the old motor and install the new one in the same orientation, ensuring it seats fully
• Run a test cycle to ensure the dispenser releases rinse aid