675806 Whirlpool Dishwasher Pump Impeller and Seal Kit is a service kit containing the rotating impeller and the sealing elements used to restore the hydraulic and watertight performance of a dishwasher pump assembly. The impeller is the primary fluid-moving component-a molded rotor that translates motor torque into flow and pressure-while the seals (typically mechanical seals,O-rings or lip seals) prevent wash and sump water from migrating into the motor and bearing interfaces.
Inside the appliance, this kit is installed in the pump housing located in the sump area and interfaces directly with the electric motor, pump shaft or coupling, and the inlet/outlet passages or check valves. The impeller determines flow rate and pressure for recirculation or drainage depending on pump designand its clearance to the housing affects hydraulic efficiency; the seals maintain system integrity by blocking liquid ingress and by protecting bearings and electrical components from contamination. Materials, fit tolerances and exposure to hot, detergent-laden water influence wear modes such as erosion, cracking, seal hardening and loss of dimensional accuracy.
In the following article you will find a technical overview of the kit’s function and typical applications, guidance on model and compatibility checks, common failure symptoms (reduced flow, unusual noise, leakage, motor overheating), diagnostic and troubleshooting steps to isolate impeller or seal-related faultsand practical replacement considerations such as disassembly sequence, seal orientation, inspection criteria, reassembly tips and post-repair leak and performance checks. The information is aimed at technicians, engineers and informed appliance owners who need to assess, diagnose and replace pump internals while maintaining correct hydraulic and seal integrity.
table of Contents
- Function and Role of the Pump Impeller and Seal Assembly in Dishwasher Fluid Management
- How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Operates Within the Wash and Drain Systems
- Common Failure Symptoms and Wear Patterns of the Pump Impeller and Seal Kit
- Compatibility and Supported Whirlpool Dishwasher Models for the Pump Impeller and Seal Kit
- Replacement Considerations, Required Toolsand Installation Procedure for the Pump Impeller and Seal Kit
- Troubleshooting and Diagnostic Procedures: Leak Detection, Noise Analysis, and Flow Testing
- Q&A
- Future Outlook
Function and Role of the Pump Impeller and Seal Assembly in Dishwasher Fluid Management
The pump impeller converts rotational energy from the dishwasher motor into directed fluid flow, while the sealing elements protect the motor cavity and bearings from the wash sump. the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit supplies a replacement impeller sized to the original pump volute and matched sealing components designed to withstand typical dishwasher conditions-high temperature,detergent chemistry,and particulate-laden water. In operation, the impeller geometry determines flow rate and head; any wear, cavitationor deformation reduces spray pressure and can alter cycle performance. The seal assembly prevents pressurized water from migrating along the pump shaft into the motor compartment, limiting bearing degradation and electrical hazards caused by moisture ingress.
Technically, correct installation requires axial alignment of the impeller on the shaft, proper seating of the sealing faces, and inspection of mating surfaces for grooves or corrosion that would compromise the seal. Typical field evidence of a failing impeller or seal includes reduced spray intensity,abnormal noise,visible leaks beneath the dishwasher,or motor overheating under load. Routine replacement using a matched kit restores original clearances and materials compatibility, minimizing the need for repeated service and simplifying diagnosis when troubleshooting pump-related faults.
- Reduced spray performance or long cycle times
- Visible water pooling or drips under the unit
- Grinding or hydrodynamic noise from the pump area
- Motor runs but does not develop expected flow/pressure
| Item | Description |
|---|---|
| Impeller | Thermoplastic or composite rotor that generates flow; must match volute geometry for proper head and flow. |
| Mechanical seal | Two mating faces (stationary and rotating) that prevent shaft leakage; materials selected for abrasion and chemical resistance. |
| O‑rings / gaskets | Elastomeric components that maintain static seals between housings and adapt to thermal expansion. |
How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Operates Within the Wash and Drain Systems
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit contains the wet-end components responsible for converting motor torque into controlled water movement and for protecting the drive motor from water ingress. The impeller uses centrifugal action to generate the flow and pressure required to feed the spray arms during the wash cycle, while the seal assembly (an elastomeric shaft seal and mating seat) prevents water from reaching the motor bearings and electrical components. In practice, worn impeller vanes reduce spray pressure and cleaning performance, and a degraded seal allows leakage into the sump or onto the motor, causing noise, overheating, or electrical faults; technicians commonly replace this kit when vane erosion, cracked impeller hubsor compressed/crumbled seals are observed during inspection.
Within the dishwasher’s hydraulic layout the impeller and seal work together to maintain hydraulic efficiency and to isolate wet and dry components across both wash and drain operations. Many Whirlpool designs place the wash impeller in a recirculation path that feeds spray arms while a separate drain port or dedicated drain impeller in the same housing routes wastewater out; the seal prevents unintended cross-flow and keeps the motor compartment dry.Typical service diagnostics include reduced spray velocity, visible leaks at the pump flange, unusual grinding or cavitation noiseor motor thermal events; addressing these symptoms by replacing the impeller and seal restores expected flow characteristics and prevents progressive motor damage.
- Common symptoms: low spray pressure, water leaks at base, loud motor noise, intermittent draining.
- Practical check: inspect vane profile, impeller fit on shaftand seal lip condition before reinstalling.
| Item | Description |
|---|---|
| Impeller | Centrifugal thermoplastic vane assembly that pressurizes recirculation flow for spray arms. |
| Seal | Elastomeric shaft lip seal and mating seat that prevents water ingress into the motor housing. |
Common Failure Symptoms and Wear Patterns of the Pump Impeller and Seal Kit
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating impeller and the elastomeric seals that isolate the pump housing from the motor and gearbox. the impeller is responsible for generating the hydraulic flow that feeds spray arms and the sump recirculation path; the seal kit prevents water intrusion into the motor cavity and the bearings. Common wear mechanisms include abrasive erosion of impeller vanes from food particles or broken glass, cavitation pitting from air entrainmentand chemical or thermal degradation of seal lips that leads to hardening, shrinkageor cracking. This kit is intended to match OEM fit and material interfaces for compatible Whirlpool pump housings, but technicians should verify pump housing geometry and shaft coupling before installation to ensure correct alignment and torque on the retaining fasteners.
Symptoms and wear patterns provide diagnostic clues: reduced spray pressure or intermittent flow usually correlates with impeller erosion or blocked vanes; continuous drips at the base, oil or coolant contamination of the motor cavity, and visible elastomer splitting indicate seal failure. listen for high-frequency whining, grindingor increased vibration that signals impeller imbalance or bent hub; these conditions accelerate bearing wear and can mask as electrical motor faults. Perform a visual inspection by removing the pump housing to check for chipped or thinned vane profiles, measure axial play on the impeller shaftand examine seal faces for glazing or extrusion. Replace the impeller and seals when hydraulic performance is measurably reduced, when sealing surfaces are compromisedor when shaft play exceeds acceptable limits for the specific pump model.
- Reduced spray arm rotation or weak wash cycles – impeller erosion or blockage.
- leakage at the base or motor cavity – seal lip failure or compression set.
- Vibration, noiseor motor overheating - impeller imbalance or damaged hub.
- Visible nicks, cracksor missing vane material – mechanical damage requiring replacement.
| Item | Description |
|---|---|
| Impeller wear | Thinned or broken vanes reduce flow and cause cavitation, leading to noise and reduced cleaning performance. |
| Seal deterioration | Hardened, crackedor extruded seal lips permit water ingress and contaminate motor bearings and windings. |
| Imbalance / axial play | Excessive shaft movement or asymmetric mass distribution increases vibration and accelerates surrounding component wear. |
Compatibility and Supported Whirlpool Dishwasher Models for the Pump Impeller and Seal Kit
The 675806 whirlpool dishwasher Pump Impeller and Seal kit replaces the rotating impeller and the elastomeric seal that isolate the circulation pump motor from the dishwasher sump.The impeller restores the designed flow rate and pressurization of the spray arms, while the seal prevents sump leakage and protects the motor bearings from water ingress. Technically, compatibility depends on matching the impeller hub geometry, the motor shaft drive type (splined or keyed), and the seal bore/shaft diameter; physical fit and hydraulic profile must align to preserve original performance and avoid cavitation or shaft wobble.
Compatibility is determined by the pump assembly design rather than model year alone, so technicians should verify interchangeability before installation. Useful checks include matching the pump housing casting and motor coupling, confirming the shaft diameter and engagement depth, and cross-referencing the dishwasher’s parts diagram or service manual for pump assembly part numbers.Practical examples of verification steps are listed below to help decide weather the kit is a correct replacement for a given machine.
- Inspect the existing pump for a matching housing shape and mounting points.
- Measure motor shaft diameter and note the drive spline/key profile.
- Compare impeller outer diameter and inlet/outlet port alignment to the original.
- Cross-reference OEM part numbers or service diagrams to confirm interchange.
| Item | Description |
|---|---|
| Critical fit points | Impeller hub engagement, motor shaft profile, seal bore diameter |
| Performance factors | Impeller diameter/profile affects flow rate and spray arm pressure |
Replacement Considerations, Required Toolsand Installation Procedure for the Pump Impeller and Seal Kit
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating impeller and the sealing elements that maintain the pump’s hydraulic integrity.The impeller converts motor torque into water flow for wash and rinse circulation; the seal kit prevents wash water from leaking into the motor cavity and pump bearings. Functionally, a worn impeller reduces flow and pressure, producing poor cleaning or long cycle drain times, while a degraded seal allows water intrusion that accelerates bearing wear and electrical faults.Confirm compatibility by matching the pump housing interface, rotor shaft diameter and spline profile on your Whirlpool unit to the kit; this kit is intended for pumps that use a removable plastic impeller and elastomeric lip/O-ring seals rather than integral-forged assemblies.
- Basic tools: Phillips and flat-blade screwdrivers, Torx driver set (common sizes T15-T25)
- Socket or nut driver set (common sizes 7/16″ / 10 mm), needle-nose pliers
- Trim or utility knife, shop rag, cleaning solvent (isopropyl alcohol)
- Small pick or seal removal tool, silicone-based appliance grease (non-petroleum)
- Multimeter for verifying power-off and motor continuity
| Item | Description |
|---|---|
| Impeller | Thermoplastic rotary element that mounts to the motor rotor; restores designed flow and pressure. |
| Seal | Elastomeric lip seal and O-ring set for axial sealing between pump housing and motor shaft; compatible with hot detergent solutions. |
| Materials | Impeller: engineered nylon/thermoplastic.Seals: NBR/EPDM-class elastomer depending on kit batch; resistant to surfactants and hot water. |
Procedure highlights: first ensure the dishwasher is isolated from mains and water supplies and that the capacitors cannot hold charge; use a multimeter to confirm de-energized circuits. Remove the toe kick and lower access panel, drain residual water, then unfasten the pump housing and disconnect its electrical connectors while noting orientation and connector positions. Inspect the motor shaft for end play and scoring; excessive axial or radial play indicates the motor or bearing housing must be replaced rather than only replacing the impeller and seals. Clean mating surfaces, remove old seals with a small pickand lightly lubricate the new O-ring with silicone-based grease to aid seating; press the lip seal squarely into its bore and slide the impeller onto the rotor with correct index alignment. Reassemble, torque fasteners snugly (hand-tight plus quarter turn where applicable), restore power and run a short wash cycle while observing for leaks, abnormal noiseor insufficient flow; recurring leakage or grinding noise after replacement signals deeper bearing or motor rotor damage requiring further disassembly or part replacement.
Troubleshooting and diagnostic Procedures: Leak detection, Noise Analysisand Flow Testing
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit contains the rotating impeller and the radial shaft seal that isolate the motor from the wash sump and generate the hydraulic flow through spray arms. Functionally, the impeller converts motor torque to fluid movement while the seal prevents wash water from migrating along the motor shaft into the motor cavity. Compatibility is typically with Whirlpool pump housings using the same shaft diameter and impeller geometry; when diagnosing leaks or poor flow, verify the pump housing and motor shaft condition before installing the kit because a scored shaft or cracked housing can defeat a new seal or damage a replacement impeller shortly after service. A common field example: a dishmachine showing low spray pressure and visible oil or coolant at the motor base frequently enough indicates seal failure combined with impeller wear or clogging rather than an electrical fault.
- Inspect visually for water trails, rustor oil at the motor-housing interface to localize a leak.
- Spin the impeller by hand and check for axial/lateral play that indicates bearing or shaft wear.
- Listen for noise types: grinding (foreign object/bearing), whining (cavitation/worn impeller)or rattle (loose mounting).
- Perform a flow test by measuring cycle fill/drain times and compare motor current to the nameplate or service manual values; elevated current with low flow suggests hydraulic restriction or damaged impeller.
During noise analysis, separate hydraulic noise from mechanical noise by running the pump dry briefly (if safe for the model) and then under load: a dry run that still produces grinding points to bearing/motor issues, while noise only under load usually implicates impeller damage, foreign debrisor cavitation from air ingress. For leak detection, a food-safe dye introduced into the sump can reveal the leak path; backpressure or a blocked drain can force water past a compromised seal even if the external inspection appears normal. Use the table below as a rapid reference to correlate symptoms with likely causes and the practical checks a technician should perform before deciding to replace the impeller and seal or the entire pump assembly.
| Item | Description |
|---|---|
| Visible wetness at motor base | Radial seal failure or cracked housing – check shaft surface and housing integrity. |
| low spray pressure | Worn or clogged impeller, inlet restrictionor internal bypass due to damaged seal. |
| Grinding noise | Foreign object in impeller, motor bearing failure – remove and inspect impeller and motor bearings. |
| High motor current, low flow | Hydraulic blockage, fused impelleror binding pump – check for debris and measure current against nameplate. |
Q&A
What is the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit and how do I confirm it fits my dishwasher?
The 675806 kit is a replacement impeller plus sealing components for the circulation/pump assembly used in many Whirlpool-family dishwashers (Whirlpool, Maytag, Kenmore, etc.). Compatibility varies by model and production date, so always confirm fit by checking your dishwasher model/serial tag and cross-referencing the part number on the manufacturer’s parts diagram or a reputable parts supplier before buying.
What symptoms indicate the impeller or mechanical seal has failed?
Common signs include poor wash performance (little or no water circulation),unusually loud or grinding pump noise,motor running but no water movement,water leaking from the base of the dishwasher,or the motor overheating/tripping. Some electronic control error codes may also point to circulation or leak problems, but visual inspection is usually necessary to confirm a failed impeller or seal.
Can I replace the impeller and seal myself, and how arduous is the job?
Yes, a competent DIYer or appliance technician can replace this kit. The job is moderate difficulty: you must disconnect power and water, remove the lower access panel (and possibly the dishwasher from under the counter), remove the sump/pump housing, swap the impeller and seal, then reassemble and test. Typical time is about 30-90 minutes depending on access and experience. If you’re uncomfortable working with electrical/water connections or disassembling the sump, hire a qualified technician.
What tools and materials do I need to install the kit?
typical tools: screwdrivers (Phillips/flat), socket or nut driver set, pliers or channel locks, Torx driver set if required by your model, a small pick for O-rings, towels or a bucket for water, and work gloves. Optional but recommended: a multimeter to verify power is off and a small amount of dishwasher-safe silicone or clean water to lubricate seals for installation (do not use petroleum greases). Always turn off power at the breaker and shut off the water supply before starting.
What exactly is included in the 675806 kit?
Most 675806 kits include the pump impeller and the mechanical shaft seal and associated O-ring/gaskets or retaining hardware needed to rebuild the pump. Exact contents can vary by supplier, so check the product description or packaging to confirm the parts included with your purchase.
How can I tell if the leak is coming from the pump seal versus another source?
Inspect the area under the dishwasher and the pump housing while the unit runs (power on, but avoid touching live terminals). If water is visibly seeping from the pump housing seam or around the motor shaft area, the pump seal is highly likely failing. If the sump and pump are dry, check inlet and drain hoses, hose clamps, door seal, float switch areaand the tub for cracks. Isolate the pump by removing hoses and observing whether the water source persists to narrow the source.
Should I replace the impeller and seal together or only the part that’s damaged?
If you’re accessing the pump, it’s good practice to replace both the impeller and the mechanical seal at the same time. The mechanical seal is a wear item and can be damaged during removal; installing a new seal with a new impeller reduces the chance of a second failure and repeat disassembly.
What can I do to extend the life of the impeller and seal and avoid repeat problems?
Preventive measures: keep the filter and sump free of food debris and foreign objects that can damage the impeller; don’t overload the dishwasher; use recommended detergents and rinse aid; periodically inspect hoses and clamps for wear; and address any mineral buildup (hard water) with appropriate care. If you notice unusual noises or reduced performance, inspect the sump early to prevent seal damage from running the pump dry or with debris trapped.
Future Outlook
The 675806 Whirlpool Dishwasher Pump Impeller and seal Kit plays a central role in maintaining dishwasher function by ensuring reliable water circulation and preventing leaks at the pump assembly. A properly functioning impeller supports effective cleaning performance and wash-cycle efficiency, while intact seals protect the motor and surrounding components from water damage.As a targeted repair kit, it helps restore original equipment performance and can extend the service life of the appliance when installed correctly.
accurate diagnosis of pump and seal issues is essential before replacement to confirm that symptoms such as unusual noise, reduced water flow, poor cleaning results, or visible leakage are attributable to the impeller or seals rather than other components. When replacement is indicated, using the correct 675806 Whirlpool Dishwasher Pump Impeller and Seal kit and following the manufacturer’s installation guidance-or engaging a qualified service technician-reduces the risk of recurring problems and collateral damage. Timely, appropriately executed repairs help maintain safety, efficiencyand long‑term reliability of the dishwasher.
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