675806 Whirlpool Dishwasher Pump Impeller adn Seal Kit is a service kit that contains the rotating hydraulic impeller and the associated sealing components used in a dishwasher circulation/drain pump assembly. The impeller is a molded rotating element that transfers mechanical energy from the pump motor into fluid flow, while the seals are elastomeric or mechanical components designed to prevent water migration into the motor housing and to maintain internal clearances and hydraulic efficiency.
Within the appliance, the impeller and seals are mounted in the pump/sump assembly and directly interface with the pump motor shaft, pump housing, screen or trap, and downstream water passages such as spray arm feed lines and the drain. The impeller establishes the flow rate and pressure required for spray arm distribution and effective drainage, and the seals protect motor bearings and electrical components from contamination and corrosion. Proper function of thes parts is therefore critical to maintaining hydraulic performance, preventing leaks, and preserving motor life.
In this article readers will find a technical overview of the 675806 kit’s function and typical manufacturing materials, guidance on compatibility with pump housings and Whirlpool dishwasher model families, common failure symptoms to recognize (such as reduced spray pressure, noisy operation, leakage at the base of the machine, or motor overheating), approaches to troubleshooting and diagnostic checks, and practical replacement considerations such as part fitment, seal seating, handling precautions, and post‑service verification. The focus is on diagnostic and technical data useful to technicians, engineers, and informed appliance owners evaluating or servicing pump components.
Table of contents
- Function and Operational Role of the Dishwasher Pump Impeller and Seal Assembly
- How the 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit Works Inside the Pump Housing and Motor Assembly
- Common Failure Symptoms and Diagnostic Indicators of Impeller Wear and Seal Leakage
- Replacement Considerations, Compatibility checks, and Installation Procedures for Pump Impeller and seal Kits
- Q&A
- Future Outlook
Function and Operational Role of the Dishwasher Pump Impeller and Seal Assembly
The 675806 Whirlpool Dishwasher Pump Impeller and Seal kit restores the rotating hydraulic element and the sealing interface that isolate the motor from the wash and drain water. In a typical Whirlpool pump module the impeller is a centrifugal rotor that converts motor torque into radial flow, directing water to the spray arms or through the drain path depending on pump routing; the seal assembly (mechanical face and elastomeric components) prevents water from reaching the motor bearings and stator windings. Correct replacement parts must match the pump housing geometry and shaft interface to maintain clearance,balance,and the intended volumetric flow rate for a given model series.
Failure modes are straightforward to diagnose with simple tests: an eroded or cracked impeller reduces flow and increases motor load, while a worn or damaged mechanical seal allows slow leaks into the motor cavity and creates noise or bearing contamination.For practical troubleshooting and service, visually inspect the impeller vanes for bending or missing material, rotate the shaft by hand to detect roughness, and check for residue or scoring on the seal faces; in many field repairs swapping in the 675806 kit will restore designed flow and sealing when the housing and shaft are undamaged.
- Common symptoms: reduced spray pressure, intermittent drainage, grinding or whining noise, and visible water under the dishwasher.
| Item | Description |
|---|---|
| Impeller | Centrifugal rotor that generates flow to spray arms/drain; inspect for cracks, wear, and balance. |
| Seal assembly | Mechanical face and elastomer components that prevent water ingress to the motor; check for scoring and hardening. |
| Common failure modes | Abrasion, chemical degradation, thermal stress, and shaft misalignment leading to leaks or reduced flow. |
How the 675806 Whirlpool Dishwasher Pump impeller and Seal Kit Works Inside the Pump Housing and Motor Assembly
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit contains the rotating impeller and the elastomeric sealing components that occupy the pump housing and mate to the circulation motor shaft. The impeller mounts on the motor shaft spline and converts motor torque into a radial flow by pushing water through the volute and into the dishwasher spray manifold, while the shaft seal and O-rings isolate the motor cavity from the pressurized wash chamber. Correct seating and orientation of the impeller and seals are necessary for proper hydraulic performance; an undersized or misaligned impeller will reduce flow and a damaged seal will allow water to enter the motor area and cause electrical or bearing failure. Replacement parts labeled 675806 are shaped to interface with specific Whirlpool housings and shaft profiles, so mechanical fit and spline engagement must be verified during service.
Under normal operation the impeller and seals are exposed to hot, detergent-laden water and must resist abrasion, thermal cycling, and chemical attack; typical impeller material is a reinforced thermoplastic and seals are manufactured from a detergent-resistant elastomer. Common failure modes are impeller blade erosion, seal hardening or tearing, and loss of radial clearance that causes rubbing or cavitation. During a repair, technicians should inspect blade integrity, confirm concentric mounting on the shaft, lubricate seal seating surfaces with a compatible lubricant, and ensure fasteners or snap-fits are engaged without excessive preload. Practical troubleshooting signs that point to either component include reduced spray pressure, unusual pump noise (indicating impeller contact or debris), and visible leakage at the motor housing interface.
- Impeller action: converts rotational energy into flow and pressure; check blade condition and fit on the shaft.
- Seal function: prevents water ingress into the motor and maintains internal pressure balance.
- Compatibility: must match motor shaft spline, pump volute geometry, and housing recess depth.
- Failure symptoms: low circulation, motor overheating, leaking at the pump-to-motor junction, or grinding noises.
| Item | Description |
|---|---|
| Impeller | thermoplastic rotary element that generates flow; mounts on motor spline. |
| seal kit | Elastomeric shaft seal and O-rings that isolate motor from wash chamber. |
| Fitment note | Designed for specific Whirlpool pump housings and shaft profiles; verify part alignment. |
Common Failure Symptoms and Diagnostic Indicators of Impeller Wear and Seal Leakage
The 675806 Whirlpool Dishwasher Pump impeller and Seal Kit replaces the wet-end components that transfer motor torque into the dishwasher’s hydraulic system and isolate the motor from the sump. The impeller is molded to produce the radial flow required by the spray arms; the shaft and primary lip seal keep that pressurized water out of the motor cavity. over time the impeller’s vanes can erode, the hub bore can wear, and the seal lips can harden or score, causing changes in flow characteristics, increased vibration, and direct leakage onto the motor and electronic components. This kit is intended for service of Whirlpool-style pump housings that use the factory impeller and seal geometry, and should be matched to the pump housing and motor shaft dimensions to ensure correct fit and rotation direction.
Diagnosis combines symptom observation with simple mechanical checks: confirm reduced spray pressure or residual water in the sump, listen for unusual bearing or cavitation noise during run, and inspect the impeller and shaft seal after removing the pump cover. Practical checks include measuring radial runout and axial play at the impeller hub with a dial indicator and inspecting the seal lip for cutting, flattening, or hardening; radial runout above ~0.5 mm (0.02 in) or visible scoring on the seal are common thresholds that indicate replacement. When these indicators are present, replacing the impeller and seal together restores hydraulic efficiency and prevents recurrence of leakage that can damage the motor and control electronics.
- Visible water under dishwasher or persistent puddling beneath the pump housing.
- Marked drop in spray arm pressure or poor cleaning performance despite normal detergent and loading.
- Audible grinding, chirping, or cavitation noise from the pump during operation.
- Motor stalls, overheats, or trips the thermal protector when the pump is running.
- Residual water in the tub/sump after cycle completion.
- Inspection shows vane erosion, cracked/broken impeller blades, shaft wobble, or seal lip damage.
Replacement Considerations, Compatibility Checks, and Installation Procedures for Pump Impeller and Seal Kits
The 675806 Whirlpool Dishwasher Pump Impeller and Seal Kit replaces the rotating water-moving element and the sealing components that isolate the pump chamber from the motor drive. The impeller converts motor torque into flow; wear,broken fins,or clogging will reduce circulation and increase motor load,while damaged or hardened seal faces and O-rings allow wash water to bypass the pump or reach the motor. When evaluating a replacement, confirm the impeller geometry, shaft coupling style (splined vs.press-fit), and the seal type used (single lip, double lip, or mechanical/face seal) to ensure the new parts reproduce the original hydraulic performance and maintain a leak-tight interface under typical dishwasher operating pressures and temperatures.
Before installation, perform compatibility checks: match the Whirlpool part number and visually compare the impeller diameter, vane profile, and shaft engagement; inspect the pump housing bore and motor shaft for wear or scoring that could prevent proper seal seating. During assembly, clean mating surfaces, lubricate elastomeric seals with approved dishwasher-safe grease only, seat the seal squarely to avoid chamfer-induced misalignment, and verify axial clearance so the seal faces run flat without preload that could cause excessive heat. Practical installation steps and checks include:
- verify part number and physical match between old and new components (impeller fit, spline count, and seal outer diameter).
- Clean and inspect the pump housing and motor shaft; replace the pump housing or shaft if heavily scored.
- Lubricate O-rings with silicone grease, press-fit seals straight, and ensure correct axial positioning per service manual dimensions.
- Rotate the impeller by hand after assembly to confirm smooth operation and lack of rubbing before reassembly into the dishwasher.
| Item | Description |
|---|---|
| Shaft engagement | Confirm spline count or press-fit diameter; mismatch leads to slip or premature wear. |
Q&A
What does the 675806 Whirlpool dishwasher pump impeller and seal kit include?
Contents vary by vendor,but the 675806 kit typically includes the rotating impeller and one or more replacement mechanical seal components (seal seat and seal rotor) and frequently enough an O‑ring or shaft sleeve. Always check the kit listing or parts diagram for the exact items included before starting the repair.
Which dishwasher models does part 675806 fit?
Compatibility depends on the exact pump assembly used in a model. The 675806 kit is intended for certain Whirlpool-family lower circulation pumps; it may fit Whirlpool, KitchenAid, Maytag and Kenmore models that use that pump.Confirm fitment by searching your dishwasher model number against the part number on the manufacturer’s parts lookup or the seller’s compatibility list before buying.
What symptoms indicate the impeller or mechanical seal needs replacing?
Common symptoms are poor spray performance or low water circulation, unusual grinding or vibration noises from the lower pump, visible water leaking from the base of the dishwasher, or the pump running (humming) with no water flow. You may also find corrosion, scoring or visible wear on the impeller or shaft when the pump is inspected.
Can I keep using the dishwasher with a leaking pump seal?
No.A leaking mechanical seal allows water into the motor area and can cause electrical shorting, motor failure and cabinet damage. Stop using the dishwasher and replace the seal (and impeller if damaged) as soon as possible.
What tools and preparatory steps are needed to replace the impeller and seal?
Turn off power at the breaker and shut off the water supply. Typical tools: screwdrivers, nut drivers/sockets for access panels and hose clamps, pliers, needle‑nose, a towel/bucket for trapped water, and possibly a small seal puller. Work on a cool, dry surface, remove lower access panels, and reference a service manual or parts diagram. If you’re not comfortable with electrical or pump disassembly, hire a qualified technician.
What are the key installation tips for the mechanical seal and impeller?
Clean the pump housing thoroughly, remove all debris and old seal residue. Handle seal faces carefully – do not touch the polished surfaces with bare fingers. Install the stationary seal seat fully and square in its bore, then slide the rotating seal (usually attached to the impeller) onto the shaft so the sealing faces meet correctly. Ensure any O‑rings are seated and lightly lubricated with a dishwasher‑safe silicone lubricant or water so they don’t pinch. Reassemble in the correct order and avoid overtightening fasteners that can distort housings.
After replacing the parts, the pump is noisy or still leaking - what should I check?
Check that the seal was installed squarely and that the seal faces are clean and undamaged.Inspect the shaft for scoring or excessive wear (a damaged shaft will not seal properly), check the impeller for correct seating and clearance inside the housing, and confirm all O‑rings/gaskets are present and seated. Also verify hoses and clamps are tight and the pump housing isn’t cracked. If noise persists, motor bearings or the entire pump assembly may be failing and require replacement.
How long should a new impeller and mechanical seal last, and are OEM parts necessary?
Service life depends on usage, water quality and dishwasher maintenance; a properly installed seal and impeller can last many years under normal conditions. Using OEM or high‑quality aftermarket parts is recommended because mechanical seals require precise materials and tolerances; inferior parts can fail prematurely. If you have hard water, consider using water‑friendly detergents and periodic pump inspections to extend life.
Future Outlook
The 675806 Whirlpool Dishwasher pump Impeller and Seal Kit plays a central role in maintaining dishwasher function by ensuring effective water circulation and a watertight pump assembly. The impeller drives water through the spray arms for cleaning, while the seals prevent leaks and protect the pump motor from water damage. Replacing worn or damaged impellers and seals restores normal performance, reduces excessive noise, prevents leakage, and can extend the usable life of the appliance.
accurate diagnosis and timely replacement are important to avoid secondary damage and to ensure a cost-effective repair. Confirming symptoms-such as poor cleaning,unusual sounds,leaking,or drainage problems-helps determine weather the kit is the correct remedy. use the appropriate replacement parts and follow installation instructions or consult a qualified technician when needed. When installed correctly, the 675806 kit is a practical solution to restore pump integrity and overall dishwasher reliability.
Professional Appliance Service
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