675806 Whirlpool Dishwasher Pump Impeller and Seal Kit is a replacement service kit that provides the rotating impeller and associated sealing components used in the dishwasher circulation or drain pump assembly. The impeller is the hydraulic element that moves wash and rinse water through the manifold and spray arms, while the seals (mechanical seals, O-rings and gaskets included in the kit) prevent water from entering the motor and gearbox area. This kit represents a wear-and-replace subgroup of the pump subsystem and is intended to restore hydraulic performance and leak integrity when the original components show wear or damage.
Inside the appliance, the impeller mounts on the pump shaft driven by the motor or motor coupling and interacts directly with the sump housing, inlet screens, and discharge passages. Proper sealing isolates the wet chamber from the motor and electrical components; if the seals fail, water intrusion can lead to bearing corrosion, motor failure or electrical shorting. The impeller’s geometry and clearance to the volute determine flow rate, head and tendency toward cavitation, so correct part orientation and undamaged mating surfaces are vital to restore intended pump performance.
In the following article readers will find a technical overview of the impeller and seal functions, compatibility guidance for determining whether the 675806 kit fits a particular Whirlpool model, common failure symptoms to watch for (reduced flow, unusual noise, leaks, overheating), and structured troubleshooting steps to isolate hydraulic versus electrical faults. The article will also address practical replacement considerations such as verifying part numbers and mating surface condition, inspection for shaft or housing wear, correct seal installation and orientation, and post-replacement tests to confirm restored operation.
table of Contents
- Functional Role of the Pump Impeller and Mechanical Seal in Dishwasher Water Recirculation and Drainage
- How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Integrates and Operates Within the Pump Housing
- Common Failure Modes and Observable diagnostic Symptoms of Impeller or Seal Degradation
- Replacement, Model Compatibility, and Installation Considerations for the 675806 Kit
- Q&A
- Insights and Conclusions
Functional Role of the Pump Impeller and Mechanical Seal in Dishwasher Water recirculation and Drainage
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit contains the rotating impeller and the mechanical sealing elements that form the pump wet-end; these components control recirculation flow and isolate the motor from the wash sump. The impeller converts motor torque into volumetric flow and pressure that feed the spray arms, so vane shape, clearance to the housing, and balance critically affect spray performance and noise. The mechanical seal provides a face-to-face barrier between the pumped water and the motor shaft, typically combining a hard face (ceramic or carbon) and an elastomeric secondary seal; failure of the seal allows water into the motor cavity and leads to electrical faults or bearing corrosion. Technicians should confirm model fit by cross-referencing the dishwasher’s parts list or service manual before installing the kit to ensure shaft diameter, impeller orientation, and seal geometry match the pump housing.
- Common symptoms indicating wear: reduced spray pressure, intermittent spray arm rotation, visible leakage into the motor area, unusual grinding or humming noises from the pump.
- Inspection points: check impeller vanes for cracking or erosion, verify axial and radial play on the shaft, inspect seal faces for scoring or embedded debris, and examine elastomers for hardening or swelling.
- Practical installation notes: clean the housing bore of sediment before fitting the new seal, lubricate elastomeric parts with approved lubricant to ease assembly, and verify correct torque/fit to avoid premature seal distortion.
Failure modes are principally mechanical wear and contamination: abrasive particles or calcified deposits abrade impeller geometry and seal faces, while cavitation or hydraulic imbalance increases radial loads and accelerates wear. Replacement with the correct impeller and seal restores geometry and sealing clearances, improving hydraulic efficiency and preventing motor water ingress, but longevity depends on addressing root causes-e.g., removing debris from the sump, using appropriate water-softening where necesary, and ensuring the pump housing and diffuser are undamaged. For quick reference, the table below summarizes the wet-end elements and their technical function.
| Item | Description |
|---|---|
| Impeller | rotating element that generates flow and pressure; vane condition and concentricity determine pump efficiency and noise. |
| Mechanical seal | Two mating faces (rotating and stationary) with elastomeric secondary seals that prevent water entering the motor shaft bore. |
| Compatibility check | Verify shaft diameter, impeller orientation, and housing interface against the appliance parts list before installing the kit. |
How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Integrates and Operates Within the Pump Housing
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit mounts inside the lower pump housing where the motor shaft drives the impeller. The impeller is a molded plastic rotor that presses or keys onto the motor shaft and converts rotational torque into centrifugal flow; the seal assembly consists of a rotating face attached to the impeller hub and a stationary seat fixed to the housing. Together they form a hydrodynamic barrier that prevents wash water from entering the motor/bearing cavity while allowing the impeller to spin; proper axial compression of the seal and correct bore tolerances in the housing are required for the seal faces to run flat and leak-free. This kit is designed for housings that match the factory shaft diameter and impeller boss geometry used by specific Whirlpool models, so compatibility is determined by those mating dimensions rather than model year alone.
Functionally, the impeller geometry produces the flow and pressure needed to circulate spray water and to clear the sump, while the seal manages the interface between a wet pump chamber and the motor end. Common failure modes illustrate this interaction: a chipped or eroded impeller reduces flow and increases motor load, and a worn seal face or degraded elastomer allows slow leaks, bearing contamination, or increased noise. For reliable service, inspect the pump housing bore, the impeller bore fit, and the shaft for wear or corrosion – shaft runout and housing flatness are common causes of premature seal failure – and replace the seal faces and elastomer together to restore the intended clearances and materials. Practical checks and features include:
- Components: impeller plus rotating seal face, stationary seat, elastomer, and spring or retaining hardware.
- Materials: typically thermoplastic impeller, carbon/ceramic seal faces, and elastomeric boot.
- Symptoms prompting replacement: reduced wash performance, audible grinding or slurping, visible leaks at the sump.
- Installation checks: clean mating surfaces, verify shaft diameter and runout, ensure correct axial preload on the seal.
| Item | description |
|---|---|
| Impeller | Drives water flow; must seat concentrically on motor shaft. |
| Seal assembly | Rotating and stationary faces that prevent water ingress into bearings. |
| Compatibility | Mating bore, shaft diameter, and housing geometry determine fit across Whirlpool models. |
common Failure Modes and Observable Diagnostic Symptoms of Impeller or Seal Degradation
the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating impeller and the radial shaft seal found in many Whirlpool mid-frame pump assemblies; the impeller creates the flow and pressure required for wash and drain cycles while the seal prevents wash water from reaching the motor and bearings. Common mechanical failure modes include impeller erosion or cracking from hard particulates and detergent chemistry, material embrittlement from temperature cycles, and seal-lip wear or hardening that develops a weep path. Compatibility depends on the pump housing geometry and shaft diameter-this kit is intended for pumps that use a separate impeller and mechanical shaft seal rather than integrated motor-impeller designs, so technicians should verify housing shape, mounting features, and shaft fit before ordering replacement parts.
- Reduced wash or drain performance (weak spray or residual water in tub).
- Audible changes: high-pitched whining, grinding, or cavitation-like rattling when pump runs.
- Visible or intermittent leakage under the dishwasher, oil-streaking, or water pooling around the motor base.
- increased motor current draw or tripped thermal overloads during pump operation.
- Vibration or axial play felt at the impeller hub when the pump is disassembled.
| Item | Description |
|---|---|
| Impeller erosion/crack | Loss of hydraulic efficiency,imbalance,and noise; frequently enough visible under inspection or when flow rate is measured against spec. |
| Seal lip wear | Slow weep or sudden leak at the motor end; contamination of bearings and elevated motor temperature. |
| Debris blockage | Restricted flow and short, loud grinding as trapped particles abrade the impeller or seat. |
Diagnosing the root cause combines visual inspection with simple electrical and hydraulic checks: confirm impeller integrity and axial clearance after disassembly, look for scoring or softened seal elastomer, and compare pump motor amperage against nominal values-an elevated motor current frequently enough indicates hydraulic load from a clogged or damaged impeller or a partially seized shaft. Practical examples include detergents that soften some plastics causing premature impeller deformation, or dishware chips that embed in the pump throat and quickly abrade the seal; replacing the impeller and seal typically restores intended flow and prevents motor damage, but technicians should also clear debris from the housing and confirm correct seal orientation and shaft fit during reassembly to avoid repeat failures.
Replacement, Model Compatibility, and Installation Considerations for the 675806 Kit
The 675806 Whirlpool Dishwasher Pump impeller and Seal Kit replaces the rotating impeller and the shaft seal inside the dishwasher circulation pump and is intended to restore hydraulic performance and prevent water ingress into the motor cavity.the impeller converts motor torque into the pump flow and pressure used by the spray arms; the seal (typically a ceramic face sealed against an elastomeric lip) prevents washwater from migrating along the motor shaft. Common failure modes include impeller erosion from abrasive debris, seal-face wear or cracking, and shaft corrosion that causes wobble and uneven seal loading; those failures produce reduced spray pressure, increased vibration/noise, or visible leakage under the appliance. Confirm compatibility by matching the pump housing casting number, shaft diameter, and mounting flange pattern-some Whirlpool/Maytag models share pump components while others require a different kit revision or the entire pump assembly if the housing is damaged or revised.
Installation requires basic hand tools and careful handling of the seal seating surfaces: isolate power and water, remove the lower access panel and racks to access the pump, and support or contain residual water before disconnecting hoses. Clean the seal bore and inspect the motor shaft for pitting or axial play; a new seal will fail prematurely against a corroded or bent shaft. Seat the seal flat against the bore, apply a light smear of food-grade silicone to the elastomeric lip only if specified by the manufacturer, and install the impeller without forcing it laterally onto the shaft-excessive axial preload can distort the seal face. After reassembly, perform a short wash-and-inspect cycle for leaks and abnormal noise; if leakage persists, check for hairline cracks in the pump housing or misaligned mounting that require replacing the entire pump unit rather than just the kit.
- Symptoms indicating kit replacement: reduced spray pressure, grinding or whining from the pump area, and water pooling under the dishwasher.
| Item | Description |
|---|---|
| Kit contents | Impeller, ceramic/ elastomer seal, and mounting gasket (verify individual kit list prior to installation) |
| Compatibility check | Match pump housing casting number, shaft diameter, and flange pattern to ensure proper fit |
| Required inspection | Motor shaft straightness, seal bore cleanliness, and pump housing integrity |
Q&A
What is the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit and what parts does it include?
The 675806 kit is a replacement service kit for the circulation/drain pump used in many Whirlpool-family dishwashers. It typically includes a plastic impeller, a pump shaft seal (mechanical seal or lip seal), and sometimes small gaskets or O-rings required to reassemble the pump sump. The impeller is the moving plastic component that moves water; the seal prevents water from leaking into the motor/drive area.
How do I know if my dishwasher needs the 675806 impeller & seal kit?
Common symptoms of a failing impeller or seal include poor or no water circulation (dishes not cleaning), reduced spray pressure, loud grinding or rattling noises from the pump, and water leaking beneath the dishwasher. If you see water under the unit or motor bearings/wiring are wet, the seal may have failed. Inspecting the sump/pump assembly after removing the lower access panel will confirm wear or damage to the impeller or a leaking seal.
Which dishwasher models is this kit compatible with?
The 675806 kit is used on a range of Whirlpool-family machines (Whirlpool,KitchenAid,Maytag,Kenmore sold under whirlpool platforms). Compatibility varies by model and production date. always verify fit by matching the dishwasher model number (found on the door frame or inside the tub) to the parts diagram or OEM parts list before purchasing. If in doubt, consult the manufacturer’s parts lookup or a parts distributor.
What tools and safety steps are needed to replace the impeller and seal?
Basic tools: nut drivers or socket set (commonly 1/4″-5/16″), Torx drivers, a flat screwdriver, pliers, and possibly a small pick for O-rings. Safety steps: disconnect power at the breaker, turn off the water supply, pull out the dishwasher and remove the lower kickplate or toe panel, and put towels/buckets down to catch residual water. Work on a cool, dry unit and avoid getting motor wiring wet during the repair.
Can I replace the impeller and seal myself and how long does it take?
Yes, a competent DIYer or technician can replace it. Typical time is 30-90 minutes depending on access and experiance.The job involves removing the lower spray arm and sump,detaching the pump housing from the motor or tub,removing the old impeller and seal,cleaning the mating surfaces,installing the new seal/impeller,and reassembling. If you’re uncomfortable working around electrical components or removing the unit from its cavity, consider a professional.
Are there common installation mistakes to avoid?
Yes. Common mistakes include not fully draining water from the sump before opening the pump, damaging the new seal by forcing it or installing it backwards, failing to clean the shaft and seal seat, over-tightening plastic components, and not re-checking electrical connections. Also avoid using grease that isn’t recommended for sealing surfaces-some seals require dry installation or a thin, manufacturer-approved lubricant.
What materials are the impeller and seal made of and how long should they last?
The impeller is usually made of a durable thermoplastic; the seal is commonly a rubber lip or mechanical seal with rubber elastomers and a hard seal face (ceramic or carbon). Lifespan depends on usage, water quality, and debris ingestion-there’s no fixed interval.Under normal conditions they can last many years; replace when symptoms of wear or leakage appear. harsh water, grit, and foreign objects reduce life expectancy.
OEM vs aftermarket: should I use an original 675806 kit or a third‑party part?
OEM kits ensure correct fit and material compatibility and are recommended when available.Quality aftermarket kits can be less expensive but vary in material quality,tolerance,and seal design-poorer parts can fail sooner or cause leaks. If you choose aftermarket,buy from a reputable supplier,check fitment for your model,and inspect materials before installation.
Insights and Conclusions
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit plays a central role in maintaining dishwasher functionality by ensuring efficient water circulation and preventing leaks around the pump assembly. When the impeller wears or the mechanical seal fails, performance declines, water may not circulate properly, and leaks can develop-issues that this kit is specifically designed to address. Using the correct replacement parts helps restore designed operating efficiency, reduces the risk of secondary damage to the pump and surrounding components, and can extend the service life of the appliance.
Proper diagnosis and timely replacement are essential for effective,long-lasting repairs. Verifying that symptoms-such as poor cleaning performance,unusual noises,or visible leaking-are attributable to the impeller or seal helps avoid unnecessary parts replacement and additional labor. When replacement is warranted,using the appropriate kit and following recommended installation practices or engaging a qualified technician promotes safe,reliable results. Taken together, accurate assessment and correct part replacement offer a cost-effective way to restore dishwasher performance and minimize future service needs.
Professional Appliance Service
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