Disassembly of the robot vacuum cleaner Xiaomi: from the lid to the engine – a complete guide with photos and tips

Disassembling a Xiaomi robot vacuum cleaner on your own is a challenge that scares many users. Fear of breaking fragile parts or losing a warranty often stops you from cleaning clogged brushes, replacing your battery or fixing sensor malfunctions. However, 90% of these devices break down without going to the service center, if you know the right sequence of actions and use the right tools.

In this article, we will discuss the process of disassembly Step-by-step, from removing the top cover to extracting the main modules: turbines, wheel engines and electronic boards. V2/V3 dreame D9, Because they are the most common design among users, you will also learn how to avoid common mistakes (such as damage to plumes or failure of screw threads) and what tools are really necessary for the job.

If your vacuum cleaner is getting worse at picking up garbage, making extraneous sounds, or discharges quickly, these are good signs that it's time to look inside. But before you start picking up the screwdriver, make sure that the problem isn't solved by software: check Settings. → Service → The status of the brushes in the Mi Home app. Sometimes it's enough to reset errors or update the firmware.

1. Disassembly preparation: safety tools and measures

Before disassembling the robot vacuum cleaner, prepare the workplace and tools.

• 🔧 Cross screwdriver (better magnetic, size) PH0 or PH1 — for most of Xiaomi's screws).
• 📏 Plastic mediators (or guitar mediators) – to disconnect the latches of the cover without scratches.
• 🧲 Tweezers – useful for extracting small parts, for example, spring contacts of the battery.
• 📸 Smartphone – take photos of each stage of disassembly, especially the location of plumes and wires.

Note: In some models (e.g. Viomi) V3) They use child-proof screws (with a central pin), they need a special screwdriver or a 1.5 mm diameter drill to drill the pin, and prepare a silicone pad (you can cut out of the packaging from the machinery) - it will come in handy to protect the table from scratches.

⚠️ Warning: Do not use metal blades or knives to separate plastic parts! This leads to chipped and cracked parts. 80% of cases of damage to the body during disassembly are due to the wrong tool.

If you are planning to clean the turbine or replace the brushes, purchase:

• 🧹 Lubrication for bearings (e.g, WD-40 Specialist or silicone).
• 🔋 Isopropyl alcohol (to clean the contact board and sensors).
• 🧴 Compressor or canister with compressed air - for blowing dust from hard-to-reach places.

💡

Before disassembly, completely discharge the vacuum cleaner battery (up to 0%) - this will reduce the risk of short circuit in case of accidental closure of contacts.

Removal of the upper cover: hidden latches and screws

Starting with the hardest part, removing the top panel, most Xiaomi models have 4-6 screws (depending on the generation) and plastic latches, and the screws are usually hidden under:

• 🔊 Rubber plugs (for example, in Mi Robot) 1S — plug-in).
• 📄 Stickers (in Viomi) V2 — bottom QR-bottom-code).
• 🔋 Battery (in some versions, one screw is hidden under the battery).

Algorithm of action:

1. Turn the vacuum cleaner over and remove the garbage can.
2. Unscrew all visible screws on the bottom (usually 2-3 pieces near the wheels).
3. Carefully apply the lid to the plastic mediator, starting at the back (on the side of the power button), and the latches are weaker.
4. Swipe the mediator around the perimeter, listening to the clicks of the disconnecting latches.

In the Dreame models D9 And then you have an extra metal plate under the lid, which you have to remove by twisting 4 screws around the corners, and if the lid doesn't lend itself, don't force it, because you've probably missed the screw or the latch. Notice the side slots, sometimes there's extra mounts hidden there.

All screws on the bottom are unscrewed.|

Dumpster removed|

Perimeter latches checked.|

Mediators prepared for separation|

-->

3. Removal of the battery and electronic board

After removing the cover, you will see the battery (usually) 14.4V 5200mAh in the old models or 14.8V 6400mAh The battery is mounted on 2-4 screws and connected to the board with two wires (red "+" And black -- -- -- -- disconnect them first by pulling the connector (not by the wires!).

The electronic board is fixed on 4 screws and connected to:

• 🔌 Collision sensors (front).
• 📡 Wi-Fi/Bluetooth module (usually soldered to the board).
• 🖱️ Gyroscope and accelerometer (small black chip).
• 🔋 Charging connector (back).

To charge:

1. Disconnect all the plumes by gently pulling them up with a plastic blade. The plumes are usually fixed with latches - don't pull the wires!
2. Unscrew the screws of the mounting board (sometimes they are hidden under the heat pads).
3. Raise the cost by the edges without touching the radiator (you can get burned if the vacuum cleaner has recently worked).

⚠️ Attention: In models with laser rangefinder (LDS) And the board is connected to the rotating module with a thin plume. Don't bend it, it's the most vulnerable part of the structure!

If you're looking at a battery replacement vacuum cleaner, look at the model, and the table below shows battery compatibility for popular devices:

Disassembly of turbine and cleaning system

The turbine (fan) is the heart of the vacuum cleaner, which most often requires cleaning or repair. In Xiaomi models, it is located in the center and is mounted on 3-4 screws.

1. Remove the side brush (unscrew 1 screw and pull up).
2. Remove the main brush (click on the red locks on the sides).
3. Unscrew the turbine mount screws (usually under a rubber gasket).
4. Carefully remove the turbine along with the motor, disconnecting the power plume.

Inside the turbine, you'll find an impeller and a motor.

• 🌀 Clogged blades – clean with a toothpick or compressed air.
• 🛢️ Dry bearing lubricant – drip 1-2 drops of silicone lubricant into holes on both sides.
• 🔌 Breakage of the winding of the engine - in this case, you will need to replace the turbine entirely.

Use a soft brush (like a toothbrush) and alcohol to clean the impeller. Don't use water, it can get into bearings and cause corrosion. If the blades are damaged (broken or deformed), the turbine will have to be replaced. The original Xiaomi parts can be found by the articles:

• Mi Robot 1S: MDZ16DC (turbine), MDZ18DC (motor).
• Viomi V3: VAC-MT-03.
• Dreame D9: DM-TB-01.

5. Dismantling of wheels and sensors

Wheels and sensors are the next most popular items that require maintenance, and the wheels are mounted on bearing axles, often clogged with hair or thread, to remove them.

1. Turn over the vacuum cleaner and unscrew 1 screw on each wheel (on the inside).
2. Remove the wheel from the axle by pulling it over. If it doesn't respond, gently apply a screwdriver.
3. Clean the axle and bearing of dirt, lubricate with lithium lubricant.

Sensors are divided into several types:

• 👁️ Infrared (IR) — Responsible for detecting obstacles (front).
• 📏 Fall sensors - located on the bottom at the edges.
• 🧭 Gyroscope – on the main board (responsible for navigation).

They're often out of order. IR-sensors -- their lenses get polluted by dust:

1. Remove the front panel (unscrewing 2 screws).
2. Wipe the sensor lenses with a cotton swab soaked in alcohol.
3. Check the integrity of the wires – they are often rubbed against the body.

If the vacuum cleaner becomes less orientable in space (for example, "lost" or goes in circles), the problem may be in the gyroscope.

1. Go to the Device Settings → Calibration of the gyroscope.
2. Place the vacuum cleaner on a flat surface and watch the indicator in the application.
3. Once completed, restart the device.

💡

Before cleaning the sensors, always turn off the battery! static electricity can damage the sensitive cells.

6. Assembly of the vacuum cleaner: how to prevent errors

Assembling is as responsible a process as disassembly. Follow these rules to avoid problems:

• 🔄 Check all the plumes - they should be tightly inserted into the connectors before clicking.
• 🔩 Wrap screws cross-cross to avoid skewing plastic parts.
• 🧲 Check the polarity of the battery - red wire to "+", black-to "–".
• 🔍 Make sure all latches are fixed (especially on the top cover).

After assembly, perform a test cleaning:

1. Turn on the vacuum cleaner and check the rotation of the wheels (they should spin in synchrony).
2. Start cleaning manually and listen to the sound of the turbine - there should be no extraneous noise.
3. Check the sensors by holding your hand to the IR-sensors (the vacuum cleaner must stop).

If the vacuum cleaner is not turned on after assembly:

• Check the fuse on the board (small black cylinder with the inscription) F1 or F2).
• Make sure the battery is connected correctly and the contacts are not oxidized.
• Check the power button – sometimes it sticks after disassembly.

💡

After assembly, zero out the errors in the Mi Home app: go to Settings → Error reset. It'll eliminate false alarms.

7.Typical breakdowns and how to avoid them

Many of Xiaomi’s robot vacuum cleaners malfunctions are due to misuse or disassembly, and the table below shows the most common problems and ways to prevent them:

If your vacuum cleaner gives an error with the code, you can decrypt it according to the table:

If the error repeats after elimination, try resetting the settings via the app:

1. Go to the device settings → Reset settings.
2. Confirm the action (the vacuum cleaner will restart).
3. Perform recalibration of the sensors.

FAQ: Frequent questions about dismantling of robot vacuum cleaners Xiaomi