Dishwasher Circulation Pump Motor 66513293K112 — What It Does & How to Replace It
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Understanding the Problem
Brief explanation: The circulation pump motor (part 66513293K112) drives the pump that pushes hot water through the spray arms. When it fails you’ll see little or no spray action, poor cleaning, or water that won't recirculate even though the heater and fill functions work. Diagnostic steps (what to check first): 1. Safety first: disconnect power (unplug or switch off breaker) and shut off the dishwasher’s water supply before doing any work. 2. Confirm the symptom: run a short cycle and listen. If you hear a humming or grinding noise but no water flow, or nothing at all, the pump is the prime suspect. 3. Remove lower access: open the dishwasher, remove the lower rack and lower spray arm(s). Remove the filter and sump cover to expose the pump/impeller area. Look for debris (glass, labels, bones) jamming the impeller. 4. Manual impeller test: with power off, try to rotate the impeller by hand using pliers on the shaft just enough to feel if it’s seized. If it won’t turn or is gritty, the motor or impeller is damaged. 5. Electrical test: restore power briefly and put the washer in a diagnostic/run state (or start a wash) and verify voltage at the pump motor connector with a multimeter. Expect line voltage (typically 120V in the US) when the motor should be running. If voltage is present but the motor doesn't spin, the motor is bad. If no voltage, the control board, timer, or door latch may be at fault. 6. Continuity test (power off): disconnect the motor and test motor windings for continuity with a multimeter. Open or infinite resistance indicates an open winding (motor failure). Short to chassis (low resistance to ground) indicates internal short. Step-by-step replacement (how to fix): 1. Tools and parts: flat and Phillips screwdrivers, nut driver set, multimeter, bucket/towels, replacement pump motor assembly 66513293K112, needle-nose pliers. 2. Cut power and water supply. Remove dishwasher kickplate/ toe-kick and locate lower access panel. Place towels to catch drips and a bucket if you’ll disconnect hoses. 3. Remove lower spray arm(s), lower rack, filter assembly and sump cover to access pump housing. 4. Remove mounting screws/bolts that secure the pump housing. On some models you’ll need to tilt the dishwasher forward slightly to access screws under the tub. Support the machine if tilting. 5. Disconnect the electrical connector(s) to the circulation pump motor. Note wiring placement or take a photo for reassembly. 6. Disconnect the drain or recirculation hoses clamped to the pump housing (have towel/bucket ready). Some pumps are part of an integrated assembly—remove the hose clamps or spring clips. 7. Remove the old pump/motor assembly from the dishwasher. If the motor is separate from the pump, unbolt the motor from the pump housing and transfer any seals or gaskets (replace if damaged). 8. Inspect the impeller and housing for shards or damage. Replace the gasket or O-ring if included with the new part. 9. Install the new 66513293K112 pump motor assembly: position the pump, reconnect hoses and clamps, reconnect electrical connectors to the correct terminals. 10. Reassemble sump cover, filter, lower spray arm and rack. Reinstall the kickplate. 11. Restore water and power, run a short test cycle. Check for leaks and ensure the pump runs and spray arms spin. Listen for smooth motor sound (no grinding or loud buzzing). Final safety note: Always work with power off when handling internal components. If you’re unsure about testing live voltage or removing the dishwasher (tilting it), hire a qualified appliance technician.
Common Symptoms
Little or no water spray from arms, poor cleaning, motor humming or grinding noises, water pooling in the bottom, or the dishwasher runs but nothing is pumped.
Common Causes
- Failed motor windings or burned-out motor (internal electrical failure)
- Impeller jammed by debris or damaged impeller blades
- Electrical fault upstream (no voltage to motor) or failed relay/control board
Popular Parts That Fix This Problem
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Helpful Repair Tip
If the motor refuses to run but you see proper voltage at the motor connector during an active pump cycle, the motor (66513293K112) is almost certainly bad — replace it. If there’s no voltage, troubleshoot the control board, door switch, or relay first.
Frequently Asked Questions
Can I install this pump motor myself or do I need a technician?
Many homeowners with basic hand tools can replace the circulation pump motor themselves: cut power and water, remove the kickplate, access the pump, disconnect hoses and wiring, swap the assembly and test. If you’re not comfortable testing live voltage, tilting the dishwasher, or dealing with water leaks, hire a professional.
How long does the replacement take and what does it cost?
Replacement typically takes 45–90 minutes for someone comfortable with dishwasher disassembly. The OEM part price varies by model and supplier; expect a range from roughly $60–$250. Labor by a technician will add to cost if you hire one.
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