675806 Whirlpool Dishwasher pump Impeller and Seal Kit is a replacement pump component assembly composed of the rotating impeller and the associated sealing elements used in Whirlpool dishwashers.This kit supplies the wetted rotating element that moves wash or drain water and the seals that prevent leakage between the pumped fluid and the motor or bearing spaces; functionally it is a pump internals assembly intended for service and repair of the dishwasher sump/pump unit.
Inside the appliance the impeller converts torque from the pump motor into fluid flow, directing water through the wash arms or into the drain path depending on the machine’s pump configuration, while the seals maintain hydraulic separation between the pumped volume and the motor/bearing chamber. The component therefore interfaces directly with the pump housing/sump, the motor coupling or shaft, inlet/outlet passages and, indirectly, with the spray arm and drain plumbing; proper impeller geometry and effective sealing are essential for maintaining flow rate, preventing internal leakage that can damage bearings or motors, and ensuring predictable system pressures during the wash and drain cycles.
In the following article readers will find a technical explanation of the impeller and seal kit’s functional role, guidance on model compatibility and part-number verification, common failure symptoms (for example reduced spray pressure, unusual noise or motor loading, and evidence of leakage), practical troubleshooting checks a technician or informed owner can perform, and key considerations for replacement such as correct orientation, seal seating, cleanliness, and post-replacement testing to verify leak-free operation and restored flow performance.
Table of Contents
- Hydraulic and Mechanical Function of the Dishwasher Pump Impeller Assembly
- How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Operates within the Pump Housing and Motor
- Typical Failure Modes and Diagnostic Symptoms of Impeller and Seal Degradation
- Compatibility, Replacement Considerations, and Installation Guidelines
- Q&A
- The Way Forward
Hydraulic and Mechanical Function of the Dishwasher Pump Impeller Assembly
The 675806 Whirlpool Dishwasher Pump Impeller and seal Kit replaces the rotating and sealing interfaces that transfer motor torque into fluid flow within the pump housing. In circulation-mode, the molded impeller converts shaft rotation into a radial flow that pressurizes spray arms; the geometry of the vanes and the clearance to the volute determine the delivered flow and head. The kit’s seal assembly isolates the motor end from the wet-end, using a dynamic lip or mechanical face to prevent water ingress. Compatibility depends on pump housing dimensions, shaft diameter, and impeller fitment on the motor hub, so confirm that the replacement impeller indexes to the keyed or splined shaft and that the seal matches the bore and shaft finish of the existing pump body before installation.
Hydraulically, a worn or damaged impeller reduces flow, changes the pump’s operating point, and can induce cavitation or increased current draw on the motor; mechanically, a degraded seal allows axial leakage and can permit contaminants to reach the motor bearings. Technicians should verify free rotation after assembly, minimal radial play on the shaft, and correct seating of the seal lip or face to the stationary counterface. Practical checks include observing spray-arm pressure during a short run, inspecting for ripple/noise indicative of imbalance, and confirming materials (thermoplastic impeller, elastomer/ceramic seal faces) are intact and chemically compatible with dishwasher detergents and hot water environments.
- Common symptoms: reduced spray pressure, visible leaks at pump junctions, unusual motor noise or overheating.
- Installation checks: proper impeller orientation, keyed/splined engagement, seal face cleanliness, and correct bore fit.
- Maintainance tip: remove debris from the pump inlet and volute before final assembly to avoid premature wear.
| Item | Description |
|---|---|
| Impeller | Molded vane component that converts shaft torque into radial fluid flow; clearance to volute controls performance. |
| Seal | Dynamic sealing interface (lip or mechanical face) that prevents wet-end leakage to the motor; requires proper seating and surface finish. |
| Shaft interface | Keyed or splined connection transferring torque; wear here causes slip and reduced performance. |
| Pump housing | Defines volute geometry and mounting for seal; bore dimensions determine seal compatibility. |
How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Operates Within the Pump Housing and Motor
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit comprises the rotating impeller that transfers torque from the motor into hydraulic energy and the shaft/seal elements that isolate the motor and bearings from wash water. The impeller is seated inside the pump housing and accelerates fluid radially into the discharge passage; correct radial clearance between the impeller vanes and the volute directly controls pump efficiency and pressure. The accompanying seals (a combination of static and dynamic sealing surfaces) form a barrier at the motor-shaft passage to prevent fluid ingress into the motor cavity and to protect bearing surfaces. compatibility depends on the pump-housing geometry and motor hub interface (splined, keyed, or press-fit), so the kit must match the housing profile and shaft connection for reliable engagement and sealing.
During operation the impeller converts motor RPM into flow and differential pressure while the seals accommodate shaft rotation and axial movement without allowing leakage; worn vanes reduce flow and worn seals permit progressive water entry that corrodes bearings and electrical connections. Typical failure modes include impeller wear from debris or abrasion, cavitation damage from restricted inlet conditions, and seal surface wear from rough or corroded shaft surfaces. Practical field checks before replacement include measuring impeller-to-volute clearance, inspecting the motor shaft for scoring, and checking for visible leaks or lubricant contamination; if the shaft is scored beyond the seal mating surface, a simple seal replacement may not stop leakage and shaft refurbishment or motor replacement will be required.
- Common symptoms: low spray pressure, audible bearing or grinding noise, visible leaks at the base of the pump, or intermittent motor overheating.
- Quick inspection steps: verify impeller rotational freedom, check shaft surface finish at the seal contact, and confirm housing bores are intact and not warped or cracked.
| Item | description |
|---|---|
| Impeller | Molded hydrodynamic element that converts shaft rotation into radial flow; geometry sets flow/pressure characteristics. |
| Shaft/Seal elements | Elastomeric and hard-face sealing surfaces that prevent wash-water ingress while allowing shaft rotation and limited axial play. |
Typical Failure Modes and Diagnostic Symptoms of Impeller and Seal Degradation
the pump impeller and seal form a compact hydraulic assembly that moves wash water through the dishwasher and isolates the motor from the wetted chamber.The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating impeller and the elastomeric and mechanical seal elements that sit on the pump shaft; these parts restore the impeller’s hydraulic profile and the seal faces that prevent pump chamber leakage. Functionally, a worn impeller will reduce flow and pressure (manifesting as weak spray arms and longer cycle times), while degraded seals or O-rings allow water to bypass the pump and appear as puddles under the appliance or as internal motor exposure that eventually causes electrical or thermal faults. This kit is intended to match the pump geometry and shaft fit on the compatible Whirlpool pump housings specified by the manufacturer; incorrect fit will produce misalignment, accelerated wear, or imbalance.
- Leakage: visible water beneath the tub or staining around the sump-indicative of failed seal faces or torn O-rings.
- reduced flow/weak spray: damaged or eroded impeller vanes, cavitation, or blockage inside the impeller eye.
- Noisy operation or grinding: axial/radial shaft play from bearing wear or a cracked impeller contacting the housing.
- Intermittent operation or motor overheating: hydraulic binding from debris or a partially seized impeller increasing motor load.
- Debris entrapment: broken plastic fragments or foreign objects lodged in the impeller causing imbalance and vibration.
| Item | Description |
|---|---|
| Axial shaft play >1 mm | Suggests bearing or seal wear; leads to wobble, noise, and uneven impeller clearance. |
| Cracked/rounded impeller vanes | Reduces hydraulic efficiency and causes cavitation,lowering spray arm performance. |
| Visible fluid under unit | Mechanical seal or O-ring failure allowing pump chamber leakage or soak to motor area. |
Diagnosing these failures begins with a visual inspection of the impeller for cracks, missing vane material, and trapped debris, followed by manual checks for shaft play and seal seating. A simple dye test or placing paper towels under the sump during a short fill cycle helps localize active leakage to the pump area; measuring inlet and outlet flow or observing spray-arm velocity quantifies hydraulic loss. In practise, replace the impeller and seal components if multiple symptoms appear-noise combined with leakage or reduced flow-to restore correct clearances and sealing surfaces; after replacement, verify there is no binding, recheck shaft runout, and confirm that the pump rotates freely before reassembling the dishwasher.
Compatibility, replacement Considerations, and Installation Guidelines
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating impeller and the pump’s sealing elements that isolate the motor cavity from wash fluid. The impeller converts motor torque into fluid flow and pressure within the circulation loop; the seal prevents water ingress to bearings and the motor endbell. Degraded impeller geometry reduces volumetric flow and increases motor current draw, while a compromised seal permits leakage that accelerates bearing wear and may short motor windings. Compatibility depends on the pump housing geometry and shaft interface-confirm spline count, shaft diameter, and bolt pattern against the existing pump before installation.
- Common symptoms indicating replacement: reduced wash performance, audible grinding or rasping from the pump, visible leakage beneath the dishwasher, or tripped motor thermal protectors/high current draw.
- Compatibility checks to perform prior to ordering: measure shaft diameter and spline profile, compare pump housing mounting dimensions, and verify the impeller face clears the volute without interference.
During installation, disassemble the pump housing and inspect mating surfaces, O-rings, and the motor shaft for scoring or excessive play; replace the entire housing or motor if those components are damaged because the kit only addresses the impeller and seal. Lightly lubricate rubber O‑rings and seat the stationary seal so the sealing faces are flat and aligned; avoid contaminating the sealing faces with particulates or oil. Ensure the impeller is fully engaged on the splined shaft with minimal axial looseness, fasten the housing evenly to manufacturer torque specifications, and perform a dry spin/leak test before reassembling the cabinetry. If the pump housing shows cracks or the motor splines are rounded, the impeller will not transmit torque reliably and the full pump assembly or motor must be replaced rather of just the kit.
| Item | Description |
|---|---|
| Impeller material | Glass‑filled thermoplastic designed for abrasion and chemical resistance |
| seal type | Axial mechanical seal with a stationary seat and a rotating seal face |
| Shaft connection | Splined hub engagement-confirm spline count and shaft diameter before ordering |
Q&A
What is the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit?
The 675806 kit contains a replacement impeller (the rotating plastic piece that moves wash water) and the pump seals/gaskets needed to reseal the sump/pump assembly. It is a repair kit intended to restore circulation and stop leaks caused by a worn impeller or failed pump seal in Whirlpool-family dishwashers (Whirlpool,KitchenAid,Maytag and other models built on the same platform).
How do I know if the impeller or pump seal is bad?
Common symptoms include weak or no water circulation during the wash (poor cleaning), loud grinding or rattling noises from the lower tub, water leaking from the bottom of the dishwasher, and visible water in the sump after a drain cycle. If the motor runs but there is little or no flow, the impeller is frequently enough broken or stripped; if you see water under the dishwasher or oil/residue near the pump, the seal might potentially be leaking.
Wich models is part 675806 compatible with?
675806 is an OEM part used on many Whirlpool-built dishwashers and related brands, but compatibility varies by model and production date. Always verify fit by checking your appliance model and serial number against the parts diagram on the manufacturer’s parts site or the retailer’s compatibility tool before ordering.
What tools and prep are required and what is the basic installation process?
turn off power to the dishwasher at the breaker and disconnect water if you will be removing water-connected parts. Basic tools: screwdrivers (Phillips/flat), nut drivers or sockets, pliers, and possibly a putty knife for clips.Typical steps: remove the lower access panel, remove lower spray components and sump cover, detach the pump housing from the motor (or remove the assembly per your model), pull out the old impeller and seals, clean mating surfaces thoroughly, install the new seal(s) and impeller per the kit instructions, reassemble and test. Follow the kit instructions and the service manual for your model – procedures vary by design.
Can I reuse the old seal or impeller, or reuse existing O-rings?
No - do not reuse old seals or a damaged impeller. Seals are inexpensive and deform or harden when in service; reusing them risks continued leakage. Replace any O-rings or gaskets included in the kit and inspect other related parts (motor coupling, housing) for wear and replace them if necessary.
Are there common installation mistakes I should watch for?
Yes. Common errors include: installing the seal or impeller in the wrong orientation, leaving dirt or old gasket residue on the seal seat, not seating the seal fully (causing leaks), over-tightening fasteners or clamps, and forgetting to reconnect or correctly position hoses and wiring. Always compare the new parts to the originals and follow the orientation and seating guidance in the kit or service manual.
How should I test the dishwasher after installing the kit and what should I check for?
Restore power and run a short wash or drain test while watching for leaks and listening for abnormal noises. Check under the dishwasher for drips, verify normal water circulation and spray action inside the tub, and confirm the pump runs quietly. If you see leaks, shut power off and recheck seal orientation and seating and that all clamps/fasteners are secure.
Where should I buy the 675806 kit and is aftermarket acceptable?
You can buy the kit from authorized Whirlpool parts dealers,appliance parts retailers,and many online marketplaces. OEM (whirlpool) kits match original fit and material; quality aftermarket kits may also be acceptable if they match dimensions and materials. For reliability, especially when a tight seal is critical, many technicians prefer OEM or a well-reviewed aftermarket equivalent. Verify return policies and part numbers before purchasing.
The Way Forward
The 675806 whirlpool Dishwasher Pump Impeller and Seal Kit plays a focused but essential role in dishwasher operation by maintaining proper water circulation and preventing leaks at the pump assembly. A functioning impeller ensures effective spray and cleaning performance, while an intact seal protects the motor and surrounding components from water intrusion. When in good condition, these components contribute to efficient operation, reduced noise, and longer overall appliance life.
Accurate diagnosis and timely replacement are crucial to avoid secondary damage and restore reliable performance.Symptoms such as poor cleaning, unusual noise, visible leaks, or pump overheating should prompt inspection of the impeller and seal as part of a broader troubleshooting process. When replacement is warranted, using the correct kit and following manufacturer-recommended procedures-or engaging a qualified service technician-helps ensure a safe, lasting repair and can be more cost-effective than addressing resulting damage later. Proper diagnosis and execution therefore help maintain safety, efficiency, and the expected service life of the dishwasher.
Professional Appliance Service
If your appliance requires professional diagnosis or repair, visit
Revolff Home Services
for expert appliance repair services.
For local appliance service information see
Dryer repair Henderson
.
Replacement parts for many appliance models can also be found at
Reliable-Parts-Hub
.
