Kenmore 40514782420 24" built-in hybrid tub dishwasher - white Parts

To remove the lower spray arm on your Kenmore 40514782420 dishwasher, pull out the lower rack, then release the spray arm retainer (typically a center nut or locking cap) and lift the arm straight up. Reinstall by seating it fully and confirming it spins freely; see the owner's manual.

Before you start (safety and access)

• Turn off power to the dishwasher at the breaker.
• Let the heating element cool before reaching into the tub.
• Pull the lower rack straight out for clear access.
• Remove any large debris around the filter area so parts seat correctly.

Removal steps (lower spray arm)

1. Remove the lower rack.
2. Locate the lower spray arm at the bottom center of the tub.
3. Hold the spray arm and loosen the center retainer (locking cap/nut style varies by build).
4. Lift the lower spray arm straight up and off the hub.
5. Inspect the spray arm holes for labels or debris and clear them.

Reinstall and verify

After reinstalling, we always verify the arm can rotate without hitting dishes or the rack.

• Seat the spray arm fully on the hub.
• Tighten the retainer snugly (do not overtighten).
• Spin the arm by hand; it must move freely.
• Reinstall the lower rack and check that tall items do not block rotation.

Quick checks table

Check	What you should see	If not
Free rotation	Arm spins smoothly by hand	Re-seat arm; re-load dishes to prevent interference
No blockage	Spray holes clear	Rinse and clear debris/labels
Proper loading	Nothing contacts the arm	Move pans, lids, and handles away from the arm path

Why it matters

Your dishwasher cleans by spraying hot water and detergent through the spray arms. If the lower spray arm is loose, clogged, or blocked by cookware, wash performance drops and detergent can remain in the dispenser.

Last updated: February 2026

To tell which Kenmore dishwasher you have, we use the model number from the rating label on the dishwasher. For Kenmore model 40514782420, the label lists the model and serial number so you can match the correct parts and owner's manual.

Where to find the model number label

Most Kenmore built-in dishwashers place the rating label where you can see it when the door is open.

• Open the dishwasher door fully
• Check the inner door edge and the tub frame opening
• Look along the left side first (common location)
• Write down the full model number and serial number exactly as shown
• If the label is worn, take a clear photo and zoom in to confirm characters

How to confirm you have the right model

Kenmore dishwashers often share similar styling, so the model number is the only reliable match for parts like the control panel, heater, or pump.

What you see	What it means	What to do next
Model number starts with 405.1478	Same model family	Match the full number on the label to your parts list
Extra digits after the family	Exact version of the dishwasher	Use the full model number when ordering parts
Serial number only	Not enough for parts matching	Find the model number line on the same label

Why it matters

Using the exact model number prevents ordering the wrong dishwasher parts (for example, a control panel assembly, door switch, or heating element that will not fit your tub and wiring layout).

Parts you can match once you have the model number

After you confirm the model number, you can confidently choose model-specific parts such as:

• Control panel assembly white 12176000A82008
• Main filter 12276000001513
• Inlet valve 17476000007453
• Heating elements 17476000006525

Last updated: February 2026

Common problems we see with Kenmore dishwashers like model 40514782420 include not starting, stopping mid-cycle, poor cleaning, spotting/film, excess suds, and poor drying. Most of these trace back to power or door-latch issues, water temperature/pressure, loading and detergent habits, or a clogged filter and wash system (see the owner's manual).

Most common symptoms and what usually causes them

• Won’t start or stops during a cycle: door not fully closed/latched, delay option selected, or a home power issue (tripped breaker or blown fuse).
• Poor cleaning or food residue left behind: incorrect loading, wrong cycle choice, low incoming water temperature, old/caked detergent, or spray system/pump blockage.
• Spotting or filming: rinse aid empty, hard water, low water temperature, or not enough detergent.
• Excess suds: using the wrong type of detergent (hand dish soap or non-dishwasher detergent).
• Poor drying: rinse aid not used, plastics holding water, overloading, or selecting an air-dry/energy-saving option.

Quick checks we recommend before replacing parts

1. Confirm the door closes and latches firmly; then restart the cycle.
2. Verify the dishwasher has power at the outlet and the breaker is on.
3. Use only automatic dishwasher detergent; never use hand soap.
4. Make sure incoming hot water is at least 120°F (49°C).
5. Check household water pressure; most dishwashers need 20 to 80 psi.
6. Clean and reinstall the filter; a clogged filter is a top cause of poor wash results.

Parts that commonly relate to these problems (model 40514782420)

Symptom	Part to consider	What it affects
Poor cleaning, debris recirculating	Main filter 12276000001513	Filtration and wash performance
Not filling or weak fill	Inlet valve 17476000007453	Water entering the tub
Not heating, poor drying	Heating elements 17476000006525	Water heating and heated dry
Not draining or weak wash	Permanent magnet synchronous pump 11001011002369	Wash/drain pumping action

Why it matters

Catching the root cause early (detergent type, water temperature, filter condition, and door latch closure) prevents repeat wash failures, reduces spotting, and helps the heater and pump run under normal load.

Last updated: February 2026

Kenmore dishwasher model 40514782420 is a 24-inch built-in dishwasher. The Use and Care Guide lists the unit dimensions as 23-3/5 in. wide x 22-7/10 in. deep x 33-3/4 in. high (600 x 576 x 855 mm). See the owner's manual for the full specifications.

Dimensions for model 40514782420

Measurement	Size (inches)	Size (mm)
Width	23-3/5	600
Depth	22-7/10	576
Height	33-3/4	855

What to measure in your cabinet opening

Even with published dimensions, we recommend measuring your opening so the dishwasher slides in without pinching hoses or rubbing the countertop.

• Opening width at the front and back
• Opening height from floor to underside of countertop
• Opening depth to the back wall (leave room for drain and water lines)
• Door clearance in front (for full door drop and loading)
• Level and toe-kick clearance; leveling legs adjust final height

Why the depth number can look different

Dishwasher depth is commonly listed in different ways (cabinet depth, depth to the door, or depth including the handle). The dimension in the manual is the correct reference for fit planning; use the installation guide to confirm how the unit is intended to sit in the cutout.

Related spec from the manual

Spec	Value
Capacity	12 place settings

Last updated: February 2026