What you need to know before you start

The drain pump on an LG washer is the part that pushes water out of the tub during the drain cycle. When it fails, water pools in the drum, clothes stay soaked, and the washer won't complete a cycle. Replacing it yourself takes two to four hours and costs between $150 and $300 for the part, depending on your model. A service call runs $200 to $400 plus the part.

You will need a Phillips screwdriver, a flathead screwdriver, a socket wrench set, and a bucket or towel to catch water still in the pump housing. Before you begin, unplug the washer and turn off the water supply. The pump sits at the bottom front of the machine, behind the access panel.

LG washers vary by model, so check your owner's manual or the model number on the back of your machine before ordering a replacement pump. The part number is usually printed on the old pump itself, which makes ordering the exact match straightforward.

Key Takeaways

  • The drain pump sits behind the front access panel at the bottom of the washer and is held in place with two or three bolts and a clip.
  • You must unplug the washer and turn off the water supply before opening any panels or touching internal parts.
  • Water will still be in the pump housing, so place a bucket or towel underneath before you disconnect the hoses.
  • The pump connects to the drain hose and the tub with two hose clamps; note which hose goes where before you remove them.
  • Order the replacement pump by model number to avoid buying a part that does not fit your specific washer.

Locate and remove the access panel

The drain pump is accessed from the front of the washer, behind a removable panel. On most LG front-loaders, this panel is at the bottom and snaps or screws into place. Look for a small indentation or handle at the bottom left or right corner of the panel. If it snaps, pull firmly outward; if it screws, use a Phillips screwdriver to remove two or three screws along the bottom edge.

Once the panel is off, you will see the pump housing directly in front of you. It is a plastic or metal cylinder about the size of a soda can, with two hoses connected to it. One hose runs to the drain outlet at the back of the machine; the other connects to the tub. Before you touch anything, place a bucket or old towel on the floor directly under the pump, because water trapped in the housing will spill when you disconnect the hoses.

Disconnect the hoses and drain remaining water

Two hose clamps hold the hoses to the pump. The clamp closest to the tub is usually a spring clamp; the one on the drain hose is often a screw clamp. Use a flathead screwdriver to loosen the screw clamp by turning it counterclockwise. For the spring clamp, squeeze the two tabs on the side and slide it back along the hose.

Once both clamps are loose, gently pull the hoses away from the pump. Water will drip, so let it drain into your bucket. If water pours out quickly, the pump housing is full; let it empty completely before moving on. Take a photo of which hose was connected where, or mark them with tape labeled "tub" and "drain" so you do not mix them up during reassembly.

Remove the pump from its mounting bracket

The pump is held to a metal bracket with two or three bolts. These are usually 10mm or 12mm bolts accessed from underneath or from the side. Use your socket wrench to remove each bolt, turning counterclockwise. Keep the bolts in a small cup or container so you do not lose them.

Once the bolts are out, the pump should lift straight out of the bracket. If it is stuck, do not force it; check that you have removed all bolts and that no clips or wires are still attached. Some models have a plastic clip that holds the pump in place; if you see one, slide it off before lifting the pump out.

Install the new pump and reconnect the hoses

Set the new pump into the bracket in the same position as the old one. Align the bolt holes and insert the bolts by hand first, then tighten them with your socket wrench. Do not over-tighten; snug is enough. If your model has a plastic clip, slide it back into place to lock the pump.

Slide the tub hose back onto the pump inlet (the connection that points toward the tub). Tighten the spring clamp by squeezing the tabs and sliding it forward until it is snug. Slide the drain hose onto the outlet (the connection that points toward the back of the machine) and tighten the screw clamp with your flathead screwdriver, turning clockwise until it is firm but not over-tight.

Check both connections by gently pulling on each hose; they should not slide off. If either one moves, tighten the clamp a bit more. Once both hoses are find, you are ready to reassemble the washer.

Reassemble the washer and test the drain

Snap or screw the access panel back into place. Make sure it sits flush with the front of the washer and that no hoses are pinched between the panel and the frame. Turn the water supply back on and plug the washer in.

Run a short drain cycle or a test wash with no clothes to check for leaks. Watch the area around the pump for dripping water while the washer drains. If you see water leaking from either hose connection, stop the cycle, unplug the washer, and tighten the clamp on the leaking hose. Once the drain cycle completes without leaks, the pump replacement is complete.

Common mistakes to avoid

The most common error is mixing up the tub hose and the drain hose during reassembly. If you connect them backward, water will not drain and the pump will work against itself. That is why taking a photo before you disconnect anything is worth the extra 10 seconds.

Over-tightening the hose clamps is another frequent problem. The clamps only need to be snug enough to hold the hose in place; tightening them too hard can crack the plastic pump connections or damage the hose itself. If you hear a cracking sound while tightening, stop and loosen it slightly.

Forgetting to place a bucket under the pump before opening the hoses is messy but not dangerous. Water in the housing is clean and will straightforward spill onto your floor. It is worth the minute it takes to position a bucket.

Frequently Asked Questions

How do I know if my drain pump is actually broken?

A broken drain pump usually causes water to stay in the tub after the cycle ends, or the washer to stop mid-cycle with an error code. If water drains slowly but does drain, the pump may be clogged rather than broken; try cleaning the pump inlet screen first. If the washer makes a grinding or squealing noise during the drain cycle, the pump motor is likely failing and needs replacement.

Can I clean the pump instead of replacing it?

Sometimes. If the pump is not draining because of lint or debris, you can remove it and rinse the inlet screen and housing with water. If the pump motor itself is broken, cleaning will not help. Once you have the pump out, you will know whether it is clogged or damaged.

What if water leaks after I reassemble the washer?

Stop the cycle, unplug the washer, and check both hose clamps. Tighten whichever one is leaking by a quarter turn and test again. If the leak continues, the hose may be cracked or the pump connection may be damaged. You may need to order a new hose or pump.

Do I need to drain the washer before I start?

Yes. If the pump is broken, water is trapped in the tub. Before you remove the access panel, open the drain hose at the back of the washer and let the water run into a bucket, or use the emergency drain plug if your model has one. This prevents water from spilling all over your floor when you disconnect the hoses.

How long does the replacement take if I have never done it before?

Plan on two to four hours for your first time. Most of that is spent locating the right bolts, taking photos to remember which hose goes where, and being careful not to damage anything. Once you have done it once, the job takes about an hour.