Disassembly of the brush vacuum cleaner Xiaomi: instructions with photos and tips

Xiaomi’s robot vacuum brush is one of the most laden parts that requires regular maintenance, and over time, it gets dust, hair and debris into its mechanism, leading to reduced cleaning efficiency, increased noise or even breakdown. You can disassemble the brush yourself in 10 to 15 minutes, but it is important to know the nuances of the design of specific models, from Mi Robot Vacuum to Dreame Bot.

In this article, you'll find step-by-step photo instructions, a list of tools you need, and tips for cleaning and repairing. We'll learn how to remove side covers, remove the bristles shaft, and replace the bearings without risking damage to the parts. If your vacuum cleaner starts spitting garbage or buzzing like a tractor, it's likely the brush is the problem.

Warning: some models (e.g. Xiaomi Mi Robot Vacuum-Mop 2 Pro) have rivet-indissoluble brushes, which can only be replaced entirely, but 80% of the time, disassembly is possible, and we'll show you how to do it correctly.

What tools will be needed to disassemble

Prepare the workspace and tools before you start. Most Xiaomi brushes are disassembled without specialized hardware, but some operations will require precision.

Here is the minimum set that will be useful:

• ✂️ A flat screwdriver (preferably with a thin sting - for licking the latches)
• 🔧 Cross screwdriver (size) PH0 or PH1 screw)
• 🧲 Magnetic holder (so as not to lose small details)
• 🧴 Silicone lubricant (for bearings and shafts)
• 🧼 Toothbrush and alcohol (to clean dust and dirt)

For models with rivets (for example, Dreame Bot) Z10 Pro may require a drill with a thin drill (1-2 mm) or a soldering iron for careful drilling. If you are not sure of your skills, it is better to buy a new brush - its price rarely exceeds 1,500-2000 rubles.

⚠️ Warning: Do not use metal objects (knives, stitches) to tuck in plastic latches - this will lead to chips and cracks!

Step-by-step: how to disassemble the brush

The process of disassembly depends on the type of brush, and we'll look at two of the most common options:

1. Brush with side latches (most models of Mi Robot Vacuum)
2. Brush on screws (Dreame Bot, some versions of Mijia) 1T)

Let’s start with the first type – it occurs most often.

Option 1: Latched brush (without screws)

This design is used in the Xiaomi Mi Robot Vacuum (first and second generation), and also in some budget models. There are no screws here, only plastic latches.

1. Remove the side covers. Put a flat screwdriver in the slot between the lid and the body of the brush. Carefully tuck the latches around the perimeter — they're usually 3-4 pieces. Start at the corner where the plastic is thinner.
2. Remove the shaft with the bristles. When you take the lid off, you'll see the shaft attached to the bearings. Pull it aside, it should come out without effort. If it's jammed, don't pull it by force: sprinkle it. WD-40 silicone-lubricated.
3. Clean the bearings. On the shaft and inside the casing, you'll find metal or plastic bearings. Remove the dirt from them with a toothbrush soaked in alcohol. If the bearing crumbles, it needs to be replaced.

Xiaomi Mi Robot Vacuum in the same way 1S Bearings are often stuck to the shaft because of moisture, and if the shaft doesn't rotate even after cleaning, it'll have to be replaced.

Option 2: Screwbrush (Dreame Bot, Mijia) 1T)

These are more difficult to disassemble, but more reliable to operate, and screws are usually hidden under stickers or stubs.

1. Take off the security stickers. Find round stickers on the ends of the brush (often with the Xiaomi logo) and put them on a nail or a plastic card, and there are screws underneath.
2. Unscrew the screws. Use the cross screwdriver. PH0. The screws can come in different lengths -- remember which one you're coming from -- in some models, like the Dreame Bot. Z10 Pro) screws covered by rubber plugs.
3. Disconnect the body. After you unscrew the screws, carefully spread the halves of the body. Inside you will see a shaft, gears and sometimes a rotation sensor (in models with obstacle detection).

⚠️ Attention: Spring-mounted shaft locks are often installed in Dreame Bot brushes, and when disassembling, hold them with your finger, otherwise the spring will "shot out" and get lost!

How to Clean and Lubricate Your Brush After Disassembly

After disassembling the brush, do not rush to collect it back. Careful cleaning will extend the life of the parts 2-3 times.

Here's what we need to do:

• 🧹 Remove the hair and threads. Use tweezers or scissors to cut the hair from the shaft and bristles. Don't pull it by force, it can damage the bristles.
• 💦 Rinse the bristles. Remove the bristles block (if it's removable) and rinse under warm water with soap. Dry for at least 12 hours!
• 🛢️ Lubricate the bearings. Apply 1-2 drops of silicone lubricant (not litol or solidol!) on the bearings and shaft. Remove the excess with a napkin.
• 🔍 Check the gears. In brush-driven models (like Dreame Bot). W10) If you wear the teeth, you need to replace the gear.

To remove persistent contaminants (such as dried dirt or glue from stickers), use isopropyl alcohol. It is safe for plastic and does not leave stains.

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If the brush is still noisy after cleaning, check the shaft balance. Put it on a flat surface, so if it rolls, it will be bent. It should be replaced.

Typical Problems and How to Resolve Them

Xiaomi brushes don't break very often, but some problems are common, and here are the most common faults and ways to fix them:

1. The brush does not rotate or rotates in jerks.

Reasons:

• 🔄 Bearing pollution – cleaning and lubrication will solve the problem.
• 🔧 Wear of the gear drive - replacement is required.
• 🔌 Problems with the brush engine (in models with separate drive, for example, Dreame Bot) W10).

If the problem persists after cleaning, check the rotation sensor (if you have one in your model), sometimes just wipe its contacts with alcohol.

2. The brush "spit" with garbage

It's because of:

• 🌪️ Clogged duct - clear the tube connecting the brush to the dust collector.
• 🧹 Worn bristles - replace the bristles block (costs 300-500 rubles).
• 🔄 Incorrect assembly – check if the covers fit tightly.

In models with wet cleaning function (for example, Mi Robot Vacuum-Mop 2 Pro), garbage can fly out due to a clog in the water tank.

Extraneous noise (squeaking, knocking, hum)

Usually it's the fault:

• 🔊 Broken bearing - replace it (cost 50-200 rubles).
• 🔧 Weakened shaft - tighten the locking screws.
• 🧲 The garbage in the gears - disassemble and clean the mechanism.

⚠️ Warning: If the brush starts to rattle after disassembly, chances are you've got the shaft incorrectly installed or lost the spring hold.

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90% of Xiaomi brush problems are solved by cleaning and lubrication, and if the fault is left after maintenance, it is not the brush mechanism that is to blame, but the vacuum cleaner electronics (motor, control board).

When disassembly will not help: signs of malfunction of the brush engine

If the brush doesn't rotate at all and all the mechanical parts are fine, the problem could be the electrical part. Z10 Pro or Xiaomi Mi Robot Vacuum-Mop P).

Signs of engine failure:

• 🚫 The brush does not respond to vacuum cleaner commands (it does not rotate even when forced to turn on through the application).
• 🔥 The brush smells like burn or plastic.
• 🔌 When connecting to USB (In models with a diagnostic connector, the motor does not show signs of life.

In this case, disassembling the brush will not help - you need:

1. Call the multimeter wires going to the motor (resistance should be 10–50 Ohms).
2. Check the fuse on the control board (if any).
3. Contact the service - repair of the engine will cost 1,500-3,000 rubles, and the replacement of the brush as a whole - 2,000-4,000 rubles.

Self-repairing is possible only with soldering equipment and experience, and in most cases it is easier to buy a new brush.

Where to buy spare parts for Xiaomi brush

If you find out after the disassembly that the parts are worn out, you can replace them.

When buying spare parts, pay attention to:

• 📋 Exact model of vacuum cleaner (written on the sticker below).
• 🔍 Compatibility – some brushes look similar, but have different connectors.
• ⭐ AliExpress often sells unoriginal low quality parts.

Original parts can be ordered from Xiaomi service centers or official dealers (for example, Mi Store).

FAQ: Frequent questions about the dismantling of the Xiaomi brush