How to Fix a KitchenAid Stand Mixer That Is Leaking Oil/Grease

KitchenAid stand mixers are renowned for their durability and versatility, making them a beloved addition to countless kitchens around the world. However, even these culinary workhorses can encounter issues from time to time. If your mixer is leaking oil or motor grease, it’s important to fix it quickly to avoid safety hazards and diminished unit performance.

Thankfully, you can usually troubleshoot and fix a motor grease leak issue yourself.

Let’s roll up our sleeves and get your KitchenAid stand mixer back in action.

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Signs and symptoms of leaking oil or motor grease

Detecting oil or motor grease leakage in your KitchenAid stand mixer is crucial for timely troubleshooting and maintenance. Here are the signs and symptoms to look out for:

• Grease drips or puddles beneath or around the base of the mixer may appear as thick, viscous spots.
• Visible grease residue on the exterior of the mixer may accumulate on the motor housing or the attachment hub.
• Grinding or unusual noises during operation could be caused by a lack of lubrication due to grease leakage.
• A noticeable decline in the mixer’s performance, such as slower mixing speeds or difficulty in mixing dense ingredients, can be a result of inadequate lubrication caused by grease or oil loss.
• If the mixer becomes excessively hot during use, it may indicate a lack of proper lubrication due to grease leakage.
• Visible wear and tear on mixer components, such as gears, seals, or gaskets, may indicate the source of the oil leak.
• Unusual textures or flavors in your baked goods or recipes could be a consequence of grease contamination in your batter.

What causes motor oil and grease leakage?

Motor grease leakage in your KitchenAid stand mixer can be attributed to various factors and components. Understanding these potential causes will help you pinpoint the issue with your KitchenAid stand mixer’s grease leakage and prevent the problem in the future.

• Over time, the gaskets and seals that keep grease contained within the mixer can deteriorate or develop cracks, allowing grease to escape.
• Overloading the mixer with heavy or excessive ingredients can strain the internal components, leading to wear and tear.
• If the mixer’s internal components are not adequately lubricated or if the wrong type of grease is used during assembly or maintenance, it can lead to leakage.
• Neglecting regular maintenance, such as cleaning and re-greasing the mixer’s internal parts, can contribute to grease and oil leaks.
• Operating the mixer at high speeds for extended periods without allowing it to cool down can generate excessive heat, potentially causing grease to break down.
• Accidental impacts or rough handling of the mixer can result in damage to the internal components.
• The use of low-quality or non-food-grade grease during manufacturing or servicing can break down over time.

READ MORE: Why Should I Choose Genuine OEM vs. Generic Aftermarket Appliance Parts?

Before you begin troubleshooting

Take safety precautions

Before you start the troubleshooting process and make repairs to your KitchenAid stand mixer, it’s essential to prioritize safety.

Here are some safety precautions to follow:

• Disconnect your KitchenAid stand mixer from the power source to prevent accidental activation and reduce the risk of electrical accidents.
• Wear safety gloves to protect your hands from sharp edges and potential grease contact.
• Wear safety glasses or goggles to shield your eyes from debris or splashes.
• Create a clean, organized workspace by removing clutter. Make sure you have adequate lighting to see small parts and details.
• Be cautious when handling sharp or delicate components to avoid injury or damage.
• Take photos or make notes as you disassemble the mixer and troubleshoot the issue. This documentation will be valuable when reassembling the components.
• Keep children and pets away from your workspace to prevent accidents.

Gather necessary tools and materials

Before you begin troubleshooting and repairing your KitchenAid stand mixer, you’ll need to have the necessary tools and materials nearby to streamline the process. It’s crucial to use the correct tools and high-quality materials to ensure the safety and functionality of your KitchenAid stand mixer.

Here’s a list of what you may need:

• Phillips and flat-head screwdrivers for removing screws and fasteners.
• Various sizes of Allen wrenches may be required for specific mixer models.
• A socket wrench set to access and tighten certain components inside the mixer.
• Needle-nose pliers for handling small parts and wires.
• A soft mallet or rubber hammer for gently tapping and reseating components without causing damage.
• Small brushes or toothbrushes for cleaning components and removing grease residue.
• Replacement parts, depending on the source of the grease leakage.
• High-quality food-grade grease suitable for lubricating mixer components. Make sure it meets food safety standards.
• Mild cleaning agents and lint-free cloths for cleaning mixer parts and removing grease.
• A small container or plastic bag to store screws and small parts during disassembly.

READ MORE: Your Ultimate Guide to Small Kitchen Appliance Organization

Troubleshooting steps

Follow these step-by-step troubleshooting instructions to identify and address the source of motor grease leakage in your KitchenAid stand mixer. Remember to work carefully and take your time during the inspection and repair process.

1. Lift the mixer head to its highest position.
2. Locate the hinge pin cover at the back of the stand mixer.
3. Use a screwdriver to remove the hinge pin cover by gently prying it off. Once the hinge pin cover is removed, you can access the hinge pin.
4. Tap the hinge pin out using a soft mallet or a wooden block. This will allow you to detach the mixer head from the stand. With the mixer head removed, you’ll have access to the motor housing.
5. Carefully inspect the motor housing for any visible cracks, damage, or gaps in the gasket. If you find that the gasket is damaged or compromised, you’ll need to replace it with a new one. Order an OEM replacement gasket designed for your specific KitchenAid mixer model.
6. The gearbox is located beneath the motor housing. Carefully remove the cover to access the gearbox.
7. Inspect the gears and the surrounding area for any old or dried-out grease that may have leaked.
8. Clean any old grease residue using a food-safe degreaser and a soft cloth.
9. Apply a food-grade grease that is specifically designed for stand mixers to the gears and the gearbox area. Be generous with the grease/oil to ensure proper lubrication.
10. Reattach the gearbox cover securely.
11. Carefully slide the mixer head back onto the stand.
12. Align the hinge pin holes and insert the hinge pin.
13. Replace the hinge pin cover, ensuring it snaps into place.

Testing and quality check

After addressing and fixing the motor grease leak in your KitchenAid stand mixer, you’ll need to perform thorough testing and quality checks to determine if the issue has been resolved.

Follow these steps to verify the mixer’s performance:

1. Set up your mixer on a stable and level surface. Reattach any accessories or attachments that were removed during disassembly.
2. Carefully plug the mixer back into the power source and turn it on. Start the mixer at a low-speed setting.
3. Observe the mixer closely during operation for any signs of motor grease leakage. Pay particular attention to the area(s) where the leakage was previously identified.
4. Listen for any unusual grinding or knocking noises. These could indicate issues with internal components or lubrication.
5. Gradually increase the mixer’s speed to higher settings, one step at a time. Continue to monitor for signs of leakage or unusual noises at each speed level.
6. Let the mixer run at its highest speed setting for an extended period, such as 5-10 minutes. This will test its ability to handle sustained operation without overheating or further leakage.
7. Feel the motor housing and components for excessive heat. While some warmth is normal during operation, excessive heat can be an indicator of other issues.
8. After testing, check the mixer for any signs of new leakage or excessive grease buildup. Clean and wipe away any minor residual grease if necessary.
9. If you notice any problems during testing, such as renewed leakage or unusual noises, repeat the troubleshooting and repair process outlined in earlier sections.

Maintenance tips

By incorporating these maintenance tips into your routine, you can extend the lifespan of your KitchenAid stand mixer and minimize the risk of motor grease leakage and other potential problems. A well-maintained mixer will continue to serve you in your culinary endeavors for years to come.

Best practices  to keep your mixer in optimal condition:

• After each use, clean the exterior of your mixer with a damp cloth to remove any food residue, grease, or splatters. Pay close attention to the area around the attachment hub and planetary gearbox.
• Periodically inspect your mixer for signs of wear and tear, including cracks in gaskets, seals, or other components. Catching these issues early can prevent grease leakage.
• Don’t overload the mixer with heavy or excessive ingredients, as this can strain the internal components and lead to wear and tear.
• When not in use, store your mixer in a dry, cool place away from direct sunlight and extreme temperatures. Cover it with a protective cloth or mixer cover to prevent dust accumulation.
• When replacing mixer components such as gaskets or seals, use authentic  KitchenAid replacement parts that match your mixer’s model for compatibility and the best quality. You can find parts at AppliancePartsPros.com by entering your model number and checking the compatibility tool listed with each part.
• When cleaning the mixer, use mild, non-abrasive cleaning agents to avoid damaging the finish or components. Never immerse the mixer in water.

More information

Thank you for choosing this article as your guide to troubleshooting and fixing oil and motor grease leakage in your KitchenAid stand mixer! We hope this information helps you restore your mixer’s optimal performance and maintain it over time.

If you have any other appliance repair needs or projects, don’t hesitate to explore our thousands of free videos and troubleshooting guides available.

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