If your Kenmore washing machine isn’t agitating properly, clothes aren’t tumbling, the agitator spins freely in both directions, or you hear grinding noises during wash cycles, you’re likely dealing with worn agitator dogs. These directional cogs are the most common failure point in Kenmore models like the 110 and 80 Series. When these plastic components wear out, your washer loses its cleaning power and clothes come out dirty. The good news is this repair is DIY-friendly, takes under 30 minutes, and costs around $35, far cheaper than a service call or replacement machine. In this guide, you’ll learn how to diagnose the issue, remove and replace faulty components, and restore full agitation without professional help.
Diagnose Free-Spinning Agitator
Before disassembling your washer, confirm the problem with simple manual tests. These checks identify whether the agitator dogs are worn or if damage extends to the cam, splines, or base.
Test Clockwise vs Counter-Clockwise Spin
With the lid open, rotate the top portion of the agitator by hand. Turn it clockwise for more than three full rotations. It should spin freely while the lower section stays still. Now turn it counter-clockwise. The entire agitator, including the bottom half, should engage and rotate together. If both directions spin freely, the directional cogs are worn out and need replacement.
Identify Common Failure Signs
Look for these key symptoms that indicate your Kenmore washing machine agitator repair is needed:
Agitator doesn’t push clothes down during wash cycles, loud banging at the end of the spin cycle, water leakage around the base, loose or wobbly movement, grinding or rattling sounds, and uneven load distribution. If the agitator feels disconnected or spins with no resistance, worn dogs are the likely culprit. However, if plastic splines inside the agitator shaft are cracked or stripped, you’ll need a full assembly replacement instead of just the dogs.
Identify Required Replacement Parts
Most repairs only require replacing internal components, not the entire agitator. Use model-specific part numbers to ensure compatibility with your Kenmore washing machine agitator repair needs.
Replace Worn Agitator Dogs
The manufacturer part number 80040 (PartSelect PS388034) kit includes four directional cogs made of durable white and beige plastic. These are the most frequently replaced parts for Kenmore washing machine agitator repair. Always install all four at once, even if only one appears damaged, to maintain balance and prevent uneven wear. This fix resolves free-spinning agitators and restores aggressive washing action.
Upgrade with Full Cam Repair Kit
For noisier units or when the cam shows wear, use manufacturer part number 285811 (PartSelect PS334650). This medium cam agitator repair kit includes agitator cam, four directional cogs, bearing, thrust spacer, inner cap seal, and washer. It addresses issues beyond just slipping, like grinding noises and weak agitation, and ensures smooth long-term operation. For basic dog and cam replacement, manufacturer part number 285809 (PartSelect PS334648) works well but lacks the spacer and seal.
Install New Agitator Assembly if Damaged
If the plastic splines are cracked or the base is warped, replace the full unit. Use W11550891 (PartSelect PS16620354) for a complete OEM agitator shaft with fins. For partial replacements, use WP3347288 (PartSelect PS11741151) to replace the lower base only, W10836692 (PartSelect PS11727882) for the upper agitator section, or WP3951632 (PartSelect PS11742045) for the lower half and base. Also replace the thrust spacer part number 285587 (PartSelect PS334562) if there’s excessive play. This 2.5-inch white plastic ring supports movement and requires dual-action agitator grease during installation.
Gather Essential Repair Tools
You don’t need specialty equipment for your Kenmore washing machine agitator repair. Just basic hand tools and safety gear.
Use Correct Socket and Extensions
A 7/16-inch socket with a 6-inch ratchet extension is critical. The central bolt sits deep, about 4 inches, so a short extension won’t reach. A standard 1/2-inch drive ratchet works for most models. For Kenmore Compact Model 110, use a 1/2-inch square drive ratchet to remove the plastic spring retainer WPL-WP3946995.
Prepare Screwdrivers and Pliers
Keep a medium flat-head screwdriver handy for prying off caps, dust seals, and loosening old cam clips. A small flat-head helps lift retaining rings or separate tight seams. Use pliers to pull out stubborn rubber seals or stuck dust caps without tearing them.
Wear Protective Gear
Put on work gloves to protect your hands from sharp tub edges and plastic burrs. Even minor cuts can occur when reaching into the drum, especially during reassembly when performing your Kenmore washing machine agitator repair.
Remove Agitator Safely and Quickly
Follow these steps to access internal components without damaging the machine during your Kenmore washing machine agitator repair.
Power Down and Isolate Water Supply
Unplug the washer from the electrical outlet. Turn off both hot and cold water valves behind the unit. This prevents electric shock and accidental flooding during repair.
Remove Top Cap and Dust Seal
Start by removing the fabric softener dispenser. Press the side clips inward and lift it straight out. Underneath, you’ll find a rubber dust cap. Pull it off by hand. If it’s stuck, gently use pliers.
On Kenmore 80 Series, locate the notch on the agitator ring. Rotate the agitator until the notch faces forward, insert a flat-head screwdriver, and pry the cover up and off.
For Kenmore Compact Model 110, unscrew the fabric softener cup counter-clockwise or pry along the seam with a flat blade.
Extract Agitator Using Pro Techniques
Once the cap is off, remove the central fastener and lift the agitator to continue your Kenmore washing machine agitator repair.
Loosen Center Bolt or Retainer
Look down the center tube. Most models have a 7/16-inch bolt. Attach your socket with the 6-inch extension and turn counter-clockwise to loosen. Hold the lower agitator steady to prevent the tub from spinning.
On Model 110 Compact, use the 1/2-inch square drive ratchet to turn the plastic spring retainer. It threads off easily with minimal force.
If the bolt is seized, try an air impact wrench with long extensions. It breaks loose instantly. But avoid using power tools when re-tightening to prevent stripping threads.
Lift Agitator with Mechanical Help
After removing the fastener, grasp the agitator and pull upward firmly. If it’s stuck, try these techniques. Jiggle and pull by rocking it up and down while applying steady upward pressure. Use shoelaces or a ratcheting strap by threading through holes in the base and pulling from both ends. Apply WD-40 by spraying around the base shaft and waiting 5 minutes. Tap gently by placing a wood block on the hub and tapping with a hammer. Try thermal expansion by running a hot water cycle, stopping mid-fill, and attempting removal while warm. Use a 2×4 and ratchet strap to create leverage across the tub opening. Avoid excessive force that could crack the plastic or damage the drive block during your Kenmore washing machine agitator repair.
Replace Internal Dogs and Cam
Now that the agitator is out, replace the worn components to complete your Kenmore washing machine agitator repair.
Disassemble the Cam Unit
Flip the upper agitator upside down. The cam assembly will drop out or can be pulled free. Slide the bearing off the top of the shaft. Remove the black plastic retaining ring by lifting it straight up. Note its orientation for reassembly. Pry out the old agitator dogs with a flat-head screwdriver if they don’t fall out on their own.
Inspect Splines for Damage
Check the plastic splines inside the agitator and the metal splines on the tub shaft. Look for cracks, stripping, and deformation. If splines are damaged, the agitator must be replaced entirely. New dogs won’t hold in damaged splines.
Install New Dogs Correctly
Insert each new dog into its groove, ensuring proper orientation. They should grip when pulled one way and slip the other. Test by running your finger along the teeth. One direction should catch, the other should slide. Make sure all dogs are fully seated and have slight play but don’t rattle.
Reassemble Cam with Proper Alignment
Slide the bearing back onto the cam shaft. Reinstall the retaining ring so its outer teeth mesh with the agitator’s internal gear. A helpful tip is to assemble the cam upside down on a flat surface to keep dogs from falling out during reinsertion.
Reinstall and Secure Agitator Properly
Correct alignment and tightening prevent future issues with your Kenmore washing machine agitator repair.
Align Splines Before Insertion
Position the top agitator over the lower shaft. Ensure the four internal ridges on the spring-loaded screw align with the four grooves in the drive shaft. Misalignment causes binding and poor performance.
Tighten Bolt Without Stripping
Insert the 7/16-inch bolt. To prevent it from falling into the deep well, apply a dab of Vaseline to the bolt head or wedge a small piece of paper between the socket and bolt. Hand-tighten first, then give a final snug turn with the ratchet. Do not over-tighten. This can strip the threads or crack the plastic housing.
Reattach Caps and Dispenser
Press the rubber dust seal back into place. Snap the fabric softener dispenser or top cap on until it clicks securely.
For Model 110 Compact, thread the plastic spring retainer back on using the 1/2-inch square drive.
Test and Prevent Future Failures
Verify the repair worked and extend the life of your washer after completing your Kenmore washing machine agitator repair.
Run a Full Agitation Cycle
Restore power and water supply. Start a normal wash cycle. Open the lid mid-cycle to observe the agitator. It should move aggressively, tumble clothes fully, push fabric down during counter-clockwise rotation, and spin freely in reverse. If it still slips, double-check dog orientation and spline engagement.
Grease Components for Longevity
When replacing the thrust spacer or cam, apply dual-action agitator grease to the bearing and contact points. This reduces friction and prevents premature wear on your Kenmore washing machine agitator repair components.
Replace All Dogs at Once
Even if only one dog looks broken, replace all four. Mixing old and new parts leads to uneven stress and faster failure. This is one of the most important tips for a successful Kenmore washing machine agitator repair.
Check Hoses and Clamps Regularly
Inspect inlet and drain hoses for cracks, bulges, or loose clamps. These are common failure points in older Kenmore units and can lead to leaks or reduced performance.
Troubleshoot Persistent Problems
If agitation remains weak or noise continues after your Kenmore washing machine agitator repair, consider these advanced fixes.
Agitator Still Spins Freely
Recheck dog installation. Are they seated correctly? Is the retaining ring fully engaged? Confirm the cam is not cracked or warped. If splines are stripped, install a full agitator assembly W11550891.
Hearing Loud Banging or Leaking
Banging may point to failing drive block. Check for metal shavings in the shaft. Leaks could stem from a damaged inner cap seal or worn thrust spacer. Replace both if present in your repair kit.
Pulsator Spins Without Moving Clothes
In some models, the bottom pulsator has a ribbed hole that wears out. Replace the pulsator assembly AGZ72909711 if it spins freely on the shaft.
Model 80 Series Specific Tip
Always remove the dust cover via the front-facing notch before accessing the bolt. Skipping this step leads to confusion and incorrect disassembly during your Kenmore washing machine agitator repair.
Frequently Asked Questions About Kenmore Washing Machine Agitator Repair
How do I know if my Kenmore washer needs agitator dogs replaced?
If your agitator spins freely in both directions without engaging the lower portion, makes grinding or rattling sounds, or fails to push clothes down during the wash cycle, the agitator dogs are likely worn and need replacement.
Can I replace just one agitator dog or do I need to replace all four?
Always replace all four dogs at once, even if only one appears damaged. Mixing old and new parts causes uneven wear and leads to faster failure. This ensures proper balance and consistent performance.
How long does a Kenmore washing machine agitator repair take?
Most DIY repairs take between 10 and 30 minutes, depending on your experience and whether the agitator is stuck. The actual parts replacement is straightforward once you access the internal components.
What tools do I need for Kenmore agitator repair?
You need a 7/16-inch socket with a 6-inch ratchet extension, medium and small flat-head screwdrivers, pliers, and work gloves. A 1/2-inch square drive ratchet is required for Kenmore Compact Model 110.
Why is my agitator still slipping after replacing the dogs?
If the agitator still slips after your Kenmore washing machine agitator repair, check that dogs are properly seated and oriented. The problem may also be stripped plastic splines on the agitator shaft, requiring a full agitator assembly replacement.
Key Takeaways for Kenmore Washing Machine Agitator Repair
Replacing worn agitator dogs is the most effective fix for a Kenmore washer that won’t agitate properly. With the right tools and parts like manufacturer part number 80040, you can restore full cleaning power in under 30 minutes and save hundreds compared to professional service. Focus on correct dog orientation during installation, avoid over-tightening the center bolt, and apply dual-action agitator grease to moving parts for maximum lifespan. This repair extends your machine’s life for years and resolves issues like free-spinning, grinding noises, and poor cleaning performance.
