How to Replace W10391443 Drain Pump on Whirlpool Front Load Washer — Step-by-Step

Water pooling at the bottom of your Whirlpool washer after the cycle ends? You're hearing the drain pump motor humming but nothing's moving? That's the classic sign your W10391443 drain pump has given up. This pump handles every gallon of water your washer drains, and after thousands of cycles on models like the WFW70HEBW1 or WFW8640BW0, the impeller gets clogged or the motor burns out.

Good news: replacing this pump yourself takes about 45 minutes and you'll save $200-300 in service calls. I've swapped dozens of these on Whirlpool, Maytag, and Amana front loaders — the process is straightforward once you know the trick to accessing it from the front panel.

What You Need Before Starting

• 1/4" nut driver or socket set
• Needle-nose pliers
• Flat-head screwdriver
• Towels (you'll drain residual water)
• Shallow pan or bucket
• Work gloves

Repair Time: 45-60 minutes
Difficulty: Moderate

Safety First

Unplug the washer completely before starting. This pump connects directly to the motor control board with live voltage when powered. Also, expect 1-2 cups of water to spill when you disconnect the drain hoses — that's normal residual water the pump couldn't evacuate. Keep towels handy and work on a surface that can handle minor spills.

Step 1: Access the Lower Front Panel

On models like the WFW86HEBW0 and WFW80HEBC1, the drain pump sits behind the lower front access panel. Open the washer door fully, then locate the two screws at the bottom corners of the front panel (they're usually hidden under small plastic caps). Pop those caps with a flat-head screwdriver and remove the screws. The panel hinges at the top — tilt it out from the bottom and lift up to remove it completely.

Step 2: Drain Residual Water and Disconnect Hoses

Place your shallow pan under the pump housing. You'll see a large drain hose (usually black, about 1.5" diameter) connected to the pump inlet with a spring clamp. Use needle-nose pliers to squeeze and slide that clamp back about 3 inches. Gently twist and pull the hose off — water will pour out, so be ready. There's also a smaller recirculation hose on some models; disconnect that the same way. Let everything drain completely before moving on.

Step 3: Disconnect the Electrical Connector

The pump motor has a wire harness connector on the side. Press the release tab (it's usually red or white) and pull the connector straight off. Don't yank on the wires themselves — pull from the plastic housing. If it's stuck after years of humidity, gently wiggle it side to side while pulling.

Step 4: Remove the Old Pump Assembly

The W10391443 pump mounts to the washer base with three 1/4" hex screws. They're positioned in a triangle pattern around the pump body. Remove all three, supporting the pump with your other hand so it doesn't drop. Once the screws are out, rotate the pump slightly counterclockwise (about 15 degrees) and pull it straight toward you. The pump housing has alignment tabs that need this rotation to clear.

Step 5: Install the New W10391443 Pump

Before installing, inspect the rubber seal on the pump inlet. The new W10391443 includes a fresh seal, but double-check it's seated properly in the groove. Position the new pump with the electrical connector facing the right side (as you're looking at it). Rotate it counterclockwise into position until the mounting holes line up, then thread in all three mounting screws. Tighten them in a star pattern to ensure even pressure — don't overtighten, just snug.

Step 6: Reconnect Everything

Slide the drain hose back onto the pump inlet, pushing it fully onto the barbed fitting. Reposition the spring clamp over the connection point — you should hear it click into the groove. Reconnect the recirculation hose if your model has one. Plug the electrical connector back in until you hear the locking tab click. Give both hoses a firm tug to verify they're secure.

Step 7: Test Run

Before reinstalling the front panel, plug the washer back in and run a drain/spin cycle with no clothes inside. Watch the pump area for leaks during the first minute. You should hear the pump motor engage smoothly without grinding or humming. The washer should completely drain within 2-3 minutes. If everything looks good, reinstall the lower access panel and you're done.

Testing After Installation

Run a full wash cycle with a small load. Pay attention during the drain phases — you should hear a smooth whirring sound, not the labored humming you had before. Check around the pump area after the cycle completes. If you see any water pooling under the washer, you likely need to reseat one of the hose connections (the spring clamps can be tricky). Also verify your washer completes the spin cycle properly — if the pump doesn't drain fast enough, the spin cycle won't start.

Frequently Asked Questions

Will this pump work on my Maytag front load washer?

Yes, the W10391443 is used across Whirlpool, Maytag, and Amana front loaders made between 2010-2020. It replaces part numbers WPW10391443, AP6020786, and PS11754106. Check your model number against the compatibility list — if you have a WFW or MHW prefix model from that era, this is likely your pump.

My washer drains but makes a loud grinding noise — is that the pump?

Usually, yes. That grinding means the pump impeller is hitting debris or the motor bearings are shot. Coins, bra wires, and small socks are the usual culprits that jam these pumps. Even if you remove the blockage, the impeller blades are often damaged by that point and need replacement.

Can I clean the old pump instead of replacing it?

If the pump motor still runs and you just have a clog, absolutely try cleaning it first. Twist off the pump filter cap (it's on the front of the pump housing), remove any debris, and test. But if the motor hums without the impeller spinning, or if it's completely silent when it should be draining, the motor's burned out and you need the full W10391443 replacement.