DIY
How to Replace a Washer Drain Pump
Nov
How to Replace a Washing Machine Drain Pump (DIY Guide)
Is your washer refusing to drain or making strange humming sounds? The drain pump could be failing. Here’s a complete guide on how to diagnose and replace it — even if you’ve never repaired a washer before.
What Does the Drain Pump Do?
The drain pump removes dirty water from your washer’s drum at the end of each cycle. It pumps the water out through the drain hose and into your home’s plumbing system. When the pump fails, water remains inside the drum — often accompanied by grinding, humming, or gurgling noises.
Common Signs of a Faulty Drain Pump
- Washer not draining or spinning after wash cycle.
- Loud humming or rattling during drain mode.
- Water leaks from underneath the machine.
- Error codes (e.g., “OE,” “5E,” or “ND” depending on brand).
These symptoms typically point to a clogged, jammed, or burnt-out pump motor.
Tools & Parts You’ll Need
- Replacement drain pump (OEM or high-quality aftermarket)
- Phillips screwdriver
- Pliers
- Nut driver set
- Towel or shallow pan (to catch leftover water)
- Multimeter (optional for testing continuity)
Safety First
Before working on your washer:
- Unplug the machine from power.
- Turn off water supply valves.
- Have towels ready to absorb excess water.
Never attempt repairs while the washer is plugged in — drain pumps operate at high voltage and may hold residual water.
Step-by-Step Replacement Guide
1. Access the Drain Pump
Depending on your washer type:
- Front-load washers: Remove the lower front access panel or the entire front cover.
- Top-load washers: Access the pump from the rear by removing the back panel.
2. Drain Any Remaining Water
Place a shallow pan under the drain pump assembly. Slowly loosen the filter cap or disconnect the drain hose to let water flow out. Keep towels handy — it can be messy!
3. Disconnect Electrical Connectors
Take a clear photo before disconnecting the wires. Unplug the two electrical connectors from the drain pump motor.
4. Remove the Old Pump
Use a screwdriver or nut driver to remove mounting screws or clips holding the pump. Detach the inlet and outlet hoses using pliers to loosen the clamps.
5. Inspect for Blockages
Before installing the new pump, inspect hoses for debris, coins, or lint buildup. Clogs can cause premature pump failure.
6. Install the New Pump
Mount the new drain pump in place, tighten screws, and reconnect both hoses. Reattach electrical connectors following your earlier photo.
7. Test the Washer
Reassemble panels, plug the washer back in, and run a short rinse cycle. The machine should drain completely without noise or leaks.
Testing Your Pump Before Replacement
Not sure if your pump is dead? Test it with a multimeter:
- Unplug the washer and remove the pump.
- Set the multimeter to the lowest ohm range.
- Place probes on the motor terminals.
- A good pump reads 10–30 ohms; infinite or 0 means it’s bad.
Common Causes of Drain Pump Failure
- Foreign objects: Coins, hairpins, and lint clog impellers.
- Overuse: Running back-to-back heavy loads overheats the motor.
- Electrical issues: Power surges can damage the windings.
- Blocked hoses: Pressure buildup stresses the pump seal.
Choosing the Right Replacement Pump
Match your new pump to your washer’s model number to ensure a perfect fit. We carry OEM and premium aftermarket options for all major brands:
OEM pumps guarantee longevity and fit, while aftermarket versions can be cost-effective for older machines.
OEM vs Aftermarket — Quick Comparison
| Feature | OEM Pump | Aftermarket Pump |
|---|---|---|
| Fit & Compatibility | Exact match for model | Compatible; verify before purchase |
| Lifespan | 3–5 years typical | 1–3 years typical |
| Noise Level | Quieter | May vary |
| Warranty | 90–365 days | 30–180 days |
| Cost | Higher | Lower |
Maintenance Tips to Prevent Future Pump Failures
- Empty pockets before washing — coins and screws destroy impellers.
- Run a cleaning cycle monthly to flush debris.
- Keep the lint filter clean and clear.
- Check hoses for kinks or buildup every six months.
FAQs
How do I know if my washer pump is bad or clogged?
If the pump hums but doesn’t drain, it’s likely clogged. If it’s silent or buzzing faintly, it may be burned out.
Can I use a universal pump?
Only if the listing confirms compatibility with your specific model. “Universal” pumps often require adapter fittings.
How long does it take to replace a drain pump?
Most replacements take about 45 minutes from start to finish — even for first-timers.
Do I need to replace the hoses too?
Only if they’re cracked, stiff, or leaking. Otherwise, a quick rinse and reinstall should be fine.
Conclusion
Replacing a washing machine drain pump is simpler than it sounds — and much cheaper than calling for service. With basic tools, a little patience, and the right replacement part, you can get your washer draining like new again.
Shop Drain Pumps or OEM Parts at RepairPartsZone for fast U.S. shipping, verified compatibility, and helpful product experts just a click away.
