How to Clean the Wheel at Xiaomi Vacuum Cleaner: The Complete Guide

Owners of Xiaomi robotic assistants sooner or later face a situation when the device begins to behave inadequately: it moves off the route, makes strange sounds or stops altogether in the middle of the room. Most often, the cause of such failures is banal pollution of the chassis. Dust, animal hair and hair are wound on the axle, blocking the rotation and creating a critical load on the engine.

If you notice that your robot vacuum cleaner has started to tow on carpets or floor coverings, you can not ignore this. Prolonged work with a locked wheel can lead to overheating of the engine and failure of expensive electronics. In this article, we will discuss in detail how to safely and efficiently clean the wheel at the vacuum cleaner Xiaomi without damaging the warranty seals and internal mechanisms.

The cleaning procedure requires precision and a minimal set of tools. It's important to understand that different models, whether it's the Roborock, Viomi or Mijia series, can have their own design features for mounting modules. However, the basic principle of chassis maintenance remains the same for most devices in the ecosystem. Let's look at the preparation and dismantling process.

Diagnostics of problems with the running gear of the robot

Before you start disassembling, you need to pinpoint the source of the problem. It's not always the wheels that cause the noise or the device to stop, sometimes the sensors or the side brush, the initial diagnostics will help you avoid unnecessary work, flip the device over and try to manually scroll each of the wheels, they should rotate freely, with light resistance, but without jamming.

Note the indicators on the body. Many modern Xiaomi models are equipped with a self-diagnostic system that gives an error code to the body or to the application. If an indicator is on indicating a problem with the wheel (often a flashing orange or red light in the module area), then the mechanism is physically locked. Also worth listening to: the characteristic crackling or humming when trying to start is a sure sign that the engine is trying to overcome the resistance of pollution.

Visual inspection often reveals dense lumps of dust or thread wound around the axis. Sometimes the problem lies deeper where the pile has compressed and hardened. In such cases, simple purges will not be enough, deeper cleaning will be required. If the wheels rotate easily, but the robot still does not go, perhaps the problem is in the contacts or software failure.

• 🔍 Visually inspect the gap between the wheel and the body for visible obstacles.
• 👂 Listen to the sound of the motor when the device is turned on in an inverted state.
• 📱 Check the error history in the Mi Home or Roborock app.
• 🖐 Try to swing the wheel from side to side - there should be no backlash, but also spelling, too.

And it's important to note that if the robot was working in a long time in a high dust environment, dirt could get inside the machine, and in this case, external cleaning won't help, you'll need to dismantle the module. Don't ignore the first signs of malfunction, because the hair removed in time will save the bearing from wear.

Tools and workplace preparation required

To clean the chassis properly, you need the minimum toolkit that any craftsman can find in his or her home, and the rule of thumb is not to use aggressive chemicals or metal objects that could damage plastic or contacts, and workplace preparation is also important to keep the small details from getting lost.

You'll need a cross screwdriver, usually the size of a PH1 or PH2, as Xiaomi screws are often small. A compressed air canister or a compact vacuum cleaner with a narrow nozzle is ideal for dust removal. Tweezers with curved ends and a soft brush for dust sweeping are great as auxiliary tools.

⚠️ Note: It is strictly forbidden to use sharp metal objects (needles, scissors) to pick inside the wheel mechanism. You can damage the gears of the gearbox or disrupt the axle balance, which will lead to beating and noise.

Prepare the screw folding container, as they can be of different lengths in different models, and stock up on isopropyl alcohol or special liquid for cleaning electronics. Water for this purpose is not suitable, as it can cause corrosion of metal parts of the engine.

• 🛠 Cross screwdriver (PH1/PH2) screw-off.
• 💨 A compressed air balloon or a powerful compressor.
• 🧹 Soft antistatic brush and tweezers.
• 🧴 Isopropyl alcohol or contact cleaner.

Organize good lighting. Under the wheels often accumulate dark, dense dust, which is not visible in dim light, a bright lamp will help to notice the smallest villi, which in the future can cause breakage.

Step-by-step: cleaning without complete disassembly

In most cases (about 80%), deep disassembly of the module is not required. It is enough to properly clean the available cavities. Start by flipping the Xiaomi robot vacuum cleaner and removing the side brush if it interferes with access. Then intensely but carefully spin the problem wheel in different directions to soften the compressed dirt.

Use tweezers to remove large pieces of wool and thread that have wound on the axis. Be careful not to push the dirt deeper into the mechanism. After mechanically removing the main debris, blow the gap with compressed air. Direct the air jet at an angle, blowing dust outwards, not inwards.

If the wheel is still spinning tightly after this manipulation, you can try dripping one drop of isopropyl alcohol on the axle (not on the plastic, but on the metal part) to dissolve the sticky impurities. After that, turn the wheel again several times and let the alcohol dry completely before turning on.

Often users forget to clean the rubber tire itself, and it gets dust that turns into porridge, which worsens the grip, wipe the surface of the wheel with a wet (not wet!) fabric without pile, and the purity of the tire directly affects the robot's ability to enter the doorsteps and carpets.

• 🌀 Intensively spin the wheel with your hand to soften the dirt.
• ✂️ Carefully cut or pull out the tweezers of the wound hair.
• 🌬 Blow the mechanism with an air jet at an angle.
• 🧽 Wipe the rubber surface of the wheel from the adhesive dust.

This is effective for regular maintenance, but if you're doing the first procedure in a year, you're likely to need a more serious dismantling approach.

Dismantling of the wheel module for deep cleaning

If surface cleaning doesn't work, you'll have to remove the entire wheel module. In Xiaomi and Roborock devices, the module is usually held on one or two screws and plastic latches. Find a screw located directly above or below the wheel assembly and unscrew it.

Once the screw is removed, the module will not fall out on its own, as it is connected by a plume or contacts to the motherboard. Carefully pull the module up while shaking it from side to side. Do not use excessive force. If the module does not go, check if you forgot to twist the second screw (in some models there are two).

When the module is removed from the body, disconnect the connector. Depending on the model, it can be a plume or a wire with a connector. Be very careful: the connectors are fragile, and they are easily damaged by a sharp jerk. Now you have a separate unit in your hands that can be cleaned without restrictions.

⚠️ Warning: When the plume is disconnected, never pull the wires themselves. Hold on to the plastic connector tip.

Now, when you have the module in your hand, open access to the inside, and often you have to snap the plastic cover that covers the gearbox, and do that with a thin plastic card or a mediator to keep it from scratching, and you'll see the gears and the axle inside.

Carefully remove all the dust inside. Use a brush and tweezers. Pay special attention to the exit of the axle from the gearbox body, which is where the hair that enters the glands is most often wound. Remove all the debris to the last string.

• 🔩 Untwisted the locking screw of the wheel module.
• 🔌 Carefully disconnect the power connector from the board.
• 🧩 Disassemble the module body (if the design allows).
• 🧹 Remove all internal dust and grease with dirt.

Once cleaned, assemble the module in reverse order, make sure all latches fall into place with a characteristic click. Before placing them in place, wipe the contacts on the module and in the robot body with alcohol to improve conductivity.

Lubrication and bearing maintenance

After deep cleaning, the question of lubrication often arises: Should Xiaomi wheels be lubricated? Factory lubrication in gearboxes is designed for the entire life, but over time it can dry out or wash out when aggressive cleaning. If the wheels creak or rotate "dry", lubrication is necessary.

Use only those lubricants that are designed for plastic gears and slip bearings. Silicone lubricant or specialized compounds such as Lithium Grease are ideal. WD-40 (it washes out the remnants of the factory lubrication), machine oil or solidol (they are too thick and stick to dust) are strictly forbidden.

You apply the lubricant minimally. One small drop on the bearing axis or on the gear teeth is the maximum. The excess lubricant will be squeezed out by centrifugal force as it rotates and will spread across the insides of the robot, which will only make things worse, because the dust sticks to the sticky lubricant instantly.

Pay special attention to slip bearings. If dust gets in, they start creaking. A drop of liquid silicone lubricant can do wonders to bring back the silent stroke. After lubrication, turn the wheel manually several times to ensure that the composition is evenly distributed.

The right lubricant makes the machine live longer, so don't skimp on the improvised products at this point.

Post-service assembly and testing

The final step is assembly. Put the wheel module in place, making sure it sits tightly in the seat. Connect the power connector to the characteristic click. Twirl the locking screw, but don't pull it over so as not to break the thread in the plastic case.

Before you turn the robot into a position of operation, turn it on and check the wheel on weight. Start cleaning or use the joystick control app. The wheel should rotate confidently, without jerks or extraneous sounds. If you hear a crack, then the gears are not engaged or a mottle is hit.

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When you install the wheel module, make sure the gear teeth match correctly. If the module is curved, the motor will hum and the wheel will twitch.

Run a full cleaning and watch the device behave. The robot must build the map correctly, not make laps in place and confidently overcome the thresholds. If the problem persisted due to sensor error, after cleaning the wheels, it should disappear, as the device will stop stalling.

It is recommended to carry out this prevention every 3-6 months, depending on the amount of fur of the animals in the house. Regular care will save you from having to buy new modules or repair engines.

• 🔧 Tightly install the module and twist the screw.
• 🔌 Check the reliability of the plume connection.
• 🤖 Start a test cleaning to check the work.
• 👂 Make sure there is no extraneous noise.

⚠️ Warning: If the robot makes a loud grinding noise after assembly, turn it off immediately, which means that the mechanism is assembled incorrectly or a solid particle has got inside that blocks the gears.

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High-quality cleaning and lubrication of the wheels extends the life of the Xiaomi robot vacuum cleaner by 30-40% and prevents navigation errors.

Frequently Asked Questions (FAQ)