Dishwasher Not Cleaning? Circulation Pump & Motor Assembly W11032770 – Fix Poor Wash Performance Fast
If your Whirlpool, KitchenAid, or Maytag dishwasher is leaving dishes dirty or the spray arms have stopped spinning, the circulation pump is the most likely cause. In most of these dishwashers, the circulation pump pressurizes water and drives it through the spray arms during every wash and rinse cycle. When it fails, water pressure drops to zero, dishes come out greasy and unrinsed, and you may hear loud humming or grinding from the sump area. ⚡ Common failure point in Whirlpool-built dishwashers. Part W11032770 is the genuine OEM replacement assembly — includes the pump housing, motor, and impeller — direct fit, no modifications required.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ Dishwasher powers on and runs a full cycle normally
- ✔ Water fills and drains correctly
- ✔ Water supply and inlet valve confirmed OK
- ✔ Door latch and control board are functioning
- ✔ ONLY problem is poor wash performance, no spray arm pressure, or loud motor noise during wash
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- Dishes not getting clean — food residue left after full cycle
- Spray arms not spinning or barely moving
- Loud humming, grinding, or buzzing during the wash cycle
- No water pressure at the upper or lower spray arm
- Dishwasher runs but water never reaches the dishes
- Error codes related to wash motor or circulation system (varies by model)
✔ If these symptoms match, the circulation pump is the most likely failed component in the system.
✔ In most cases, replacing this assembly restores full wash performance immediately.
📦 Part Details
- Part Number: W11032770
- Type: Dishwasher Circulation Pump & Motor Assembly (complete unit)
- Replaces: OEM direct-fit assembly — supersedes W10349483, W10440715, W10510667, W10529163, W10816492, W10864037, W10885542, WPW10510667, WPW10529163 (no modification required)
- Brands: Whirlpool, KitchenAid, Maytag
- Weight: 10 lbs
While the sump area is open, inspect and clean the dishwasher filter and check the spray arm wash jets for blockages — a clogged filter is the #1 cause of premature pump failure and takes 2 minutes to clear. If the impeller shows cracking or debris damage, replace it at the same time to avoid a repeat call.
⚙️ Installation
Skill Level: Moderate — 45–60 minutes. Disconnect power and shut off the water supply before beginning. Pull the dishwasher from the cabinet, remove the lower access panel, disconnect the wiring harness and hose clamps, and swap the pump assembly from the sump housing. Torque all hose clamps evenly and confirm no leaks on first test cycle.
💡 Pro Tip
Before condemning the pump, remove and clean the dishwasher filter — a blocked filter starves the pump of flow and mimics pump failure exactly. If the filter is clear and you still have no spray pressure, the pump impeller or motor windings have failed and this assembly is your fix. Ordering both the filter and pump together saves a second service visit if the filter is also worn.
Compatible model hub pages: WDT750SAHZ, WDF520PADM, WDT720PADM, KDTM354DSS, MDB8959SFZ
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
Buy Online Pick Up In-Store
Kitchener, Ontario N2E 1W8
- Choosing a selection results in a full page refresh.
