Owning smart appliances requires regular maintenance, and Xiaomi’s robot vacuum cleaners are no exception. Owners notice that the device becomes less able to navigate space, get stuck on doorsteps or make extraneous sounds when driving. Often the root of the problem lies in the pollution of the chassis, namely, in wheels that take the brunt of dust, wool and debris.
The accumulation of dirt on the axles and inside the wheel modules leads to uneven rotation, which causes the tilt sensors to get incorrect information about the position of the body, which leads the robot vacuum cleaner to mistakenly believe that it is stuck, when in fact one of the wheels simply stopped spinning at the desired speed. Regular cleaning of this unit not only prolongs the life of the engine, but also preserves the accuracy of navigation.
In this article, we will discuss in detail the chassis maintenance process, focusing on how to clean the Xiaomi vacuum cleaner wheel correctly without damaging the delicate mechanisms. You will learn what tools you will need, how to safely remove the module and what to do if the mechanism is jammed. It is critical to clean when the device is turned off to avoid short circuit in the event of moisture on the contacts.
Diagnostics of problems with the running gear of the robot
Before starting to disassemble, you need to make sure that the problem is really the wheels. Robot vacuum cleaners Mi Robot, Roborock and Viomi series are equipped with a self-diagnostic system that often reports errors through the mobile application.
Turn the device over and try to manually spin each of the main wheels, and if they're working properly, they should rotate with a little resistance, but without jamming, and if you feel one wheel spinning heavier than the other or making a crunch, you've got wool or debris particles inside.
- 🤖 The device often reports a “wheel stuck” error or emits a corresponding audible signal.
- 🔄 The robot begins to rotate randomly in place or move in a circle without building a map of the room.
- 🔊 There is a characteristic hum or creak, which is intensified when trying to overcome obstacles.
Sometimes the problem may not be mechanical jamming, but contamination of the contact areas through which the rotational signal is transmitted, in which case simply wiping the contacts can solve the problem without deep disassembly, but if you see a dense layer of dust or wound wool inside, more serious intervention will be required.
Tools and workplace preparation required
To maintain the chassis properly, you'll need the minimum toolkit that any wizard can find in their home, and the rule of thumb is to use tools that don't damage plastic latches or create static electricity that's dangerous to electronics.
First of all, prepare a bright light source, as it is often dark under the bottom of the device and small details may not be visible. It is also recommended to use an antistatic mat or simply a clean, dry surface of the table, covered with cloth, so as not to scratch the case when working.
☑️ Wheel cleaning tools
Do not use metal objects with sharp edges to pick dirt inside the wheel, as it can damage the rubber tread or plastic axis.Isopropyl alcohol is ideal for degreasing, as it evaporates quickly and leaves no traces, unlike water, which can cause corrosion of metal elements.
⚠️ Warning: Before any work begins, be sure to turn off the robot vacuum cleaner and disconnect it from the charging station. Leaving the device on can cause the engines to start accidentally during disassembly.
Step-by-step: how to remove and clean the wheel
The process of dismantling the wheel module on most Xiaomi models (Mi Robot 1S, Vacuum Mop, Roborock S5/S6) is similar, but has its own nuances. Start by flipping the device and finding the screws that hold the module. There are usually two of them, and they are located on the sides of the wheel itself.
Use a suitable screwdriver to unscrew the screws. Stack them in a separate container so you don't lose them, because they tend to roll in unexpected places. Once you remove the screws, the module won't fall out on its own, it's held on a plume that connects the motor to the motherboard.
Carefully pull the module outwards, freeing it from the seat. Don't pull sharply so as not to damage the wires. Inside, you'll see the axis that the wool is wound on and bearings that may have clogged with dust, and that's where you need to clean the Xiaomi vacuum cleaner wheel most thoroughly.
The secret of disassembling complex models
Remove all the coiled wool with tweezers. If the dirt has been compressed and is not removed, you can gently tuck it with a sharp wooden stick (toothpicking). After mechanical cleaning, wipe the axle and inside of the wheel with an alcohol napkin, removing fatty plaque that may have formed from contact with the floor.
| Element | Type of pollution | Cleaning method | Frequency |
|---|---|---|---|
| Rubber tread | Dust, sticky mud. | Wet wipe. | Once a week. |
| The axis of rotation | Wool, threads. | Tweezers, scissors | Once every 2 weeks |
| bearing | Fine dust | Compressed air | Once a month |
| Motor contact | Oxidation | Alcohol, cotton swab | When errors occur |
Side brush and sensor maintenance
Although the main issue was the wheels, ignoring the side brush (turbobrush) is unacceptable, as it directly affects the efficiency of cleaning and the load on the wheel engines. If the brush is clogged, the robot spends more energy on overcoming resistance, which indirectly affects the chassis.
Remove the side brush by unscrewing the central screw, and often there's a lot of debris underneath that's causing the brush to stick to the floor, clear the seat, and check if the attachment mechanism is rotating freely.
- 🧹 Check the bristles of the side brush for cracks or abrasion - replace the element if necessary.
- 👁️ Wipe the collision sensors and Cliff sensors (height sensors) located near the wheels.
- 🔌 Examine the connector of the brush for the presence of oxides or dirt.
Pay special attention to height sensors, which are often located in the front of the bottom, next to the rotary wheel. If they are contaminated, the robot can "think" that is above the cliff, and refuse to go forward, constantly spinning the wheels in place. Wipe them with a soft dry cloth.
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Lubricate the wheel axles with only dry Teflon lubrication (PTFE) in microscopic amounts. Liquid oils (WD-40, engine oil) are strictly prohibited, as they will attract even more dust and turn into abrasive gruel.
Post-service assembly and testing
Once you've cleaned the Xiaomi vacuum wheel and removed all the dirt, you can start assembling. Make sure all the parts are completely dry if you've used alcohol to clean. Insert the wheel module into the seat, gently straightening the plume so it doesn't get under the screws.
Twirl the screws, but don't pull them too tightly so you don't rip the threads off the plastic case. The plastic in robot vacuum cleaners is strong enough, but it can become brittle with prolonged use. Tight enough screws to feel a little bit of resistance.
Turn on the device and start a short cleaning. Pay attention to the sound: it should become quieter and smoother. If the robot has previously made errors, check the application - the error code should disappear. Roll the device on the floor to make sure that it moves straight and does not fall to the side.
⚠️ Note: If the wheel continues to creak or spin in jerks after assembly, the bearing inside the module may have already worn out or damaged.
Prevention and frequent user errors
To avoid having to disassemble the device often, you should follow simple rules of operation: regularly clean the floor of large objects, wires and socks before starting the robot. Using virtual walls in the application will help limit the access of the device to areas with a large number of small objects.
Many users make the mistake of trying to wash the wheels with tap water, which you can't do because water gets inside the motor and flushes the factory lubricant, which causes the unit to fail quickly. Dry cleaning and using minimal alcohol is the only safe method.
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Regular preventive cleaning of wheels and brushes increases the life of the robot vacuum cleaner’s battery and motors by up to 40%.
It's also worth keeping an eye on the software update. Xiaomi engineers are constantly improving the engine algorithms, and sometimes the "stuck" problem is solved with a software patch that optimizes the effort on the wheels. Check the firmware version in the Mi Home app.