Disassembly of the Xiaomi Deerma turbobrush: a step-by-step guide with photos and nuances

Xiaomi Deerma’s turbobrush is one of the key accessories for the brand’s robot vacuum cleaners, but over time, even the most reliable equipment requires maintenance. Hair, thread and dust accumulate inside the mechanism, reducing the efficiency of cleaning, and sometimes even blocking the rotation of the brush. You can disassemble the turbobrush yourself in 15-20 minutes, but it is important to know the exact mounting points, the order of dismantling parts and critical errors that lead to breakage of plastic latches or wires.

In this article, you will find step-by-step instructions with visual cues, a table of compatibility of Deerma models (including the CM1000, DX700 and others), as well as answers to frequent questions - from how to remove a bearing without special tools, to choosing a lubricant for gears. We will also reveal the hidden nuance with a shaft lock, which is not written in standard manuals, but breaks 30% of the brushes on the first disassembly.

Preparation for disassembly: tools and security measures

Before you start, make sure you have:

• ✅ Flat screwdriver (preferably with a thin sting - suitable for watches or phones).
• ✅ Cross screwdriver (usually size PH0 or PH1).
• ✅ Tweezers (for extraction of small parts, such as locking rings).
• ✅ Silicone lubricant (e.g., WD-40 Specialist or Liqui Moly Silicon-Fett).
• ✅ Soft cloth and alcohol for cleaning contacts.

⚠️ Warning: Do not use metal brushes or abrasives to clean plastic gears, this will cause them to wear out faster. If the brush was not disassembled for a long time, the hair and dirt could be compressed into clumps that are difficult to remove without damaging the parts, in which case soak the mechanism in warm soapy water for 10-15 minutes before disassembling.

Also check if your model has expired. Disassembly of the Xiaomi Deerma turbobrush is officially considered a warranty violation unless it is done in a service center. However, in practice, most users successfully service brushes themselves without consequences.

Step 1: Removal of the upper cover and access to the mechanism

So, to start with the hardest part, opening the case, and most Deerma models have a lid attached to plastic latches that are easy to break when pressed carelessly. Here's how to do it right:

1. Place the brush upside down (brush down) on a soft surface (such as a towel) to avoid scratching the body.
2. Insert a flat screwdriver into the gap between the top and bottom of the body (usually closer to one of the ends). Carefully twist the screwdriver to disconnect the first latch.
3. Keep cracking the perimeter mounts clockwise, and don't try to open the lid right away, because it'll break.

⚠️ Warning: The Deerma DX700 and VX600 models have a hidden latch under the serial number label. If the lid doesn't lend itself, gently tuck the label with your nail or plastic card, and the last mount is hidden underneath.

After removing the cover, you will see:

• 🔧 Electric motor with wires (usually red and black).
• ⚙️ A gear gear gear gear gear gear gear gear.
• 🧲 Magnetic lock (in some models)

Step 2: Dismantling the shaft and brushes

Now, you have to take out the rotating shaft, which is the brush itself, and this is a very careful step, because it's where the parts break down most often.

1. Remove the locking ring from the shaft with tweezers, which is located at the end of the shaft on the side of the brush. If the ring does not lend itself, spray it with WD-40 and wait 2-3 minutes.
2. Carefully pull the shaft on itself - it should come out of the grooves with the brush. Don't put too much effort: if the shaft is not moving, then you missed the lock (see spoiler below).

After the shaft is removed:

• 🧹 Clean it of wound hair and dirt (use a toothpick for hard-to-reach places).
• 🔍 Check the bearings on the shaft -- they should rotate smoothly, without backlash. If you hear the crunch, they need to be replaced.

💡

If the bearings are dirty but still working, wash them in kerosene or alcohol, then apply 1-2 drops of silicone lubricant. Do not use mineral-based oils - they attract dust.

Step 3: Disassembling the gearbox and cleaning the gears

The gearbox is the heart of the turbobrush, and the pollution is the most common cause of malfunction.

1. Unscrew 2-3 screws that hold the motor (usually hidden under stickers or rubber plugs).
2. Take the motor wires off the board, remember their location or take a picture, and the polarity is mixed up, and the motor will fail.
3. Remove the motor and gearbox as a single unit. Disassemble the gearbox by removing the top cover (it is usually attached to 1-2 latches).

Inside, you'll find 2-3 gears, clean them of dirt and old lubrication with:

• 🧼 Cotton swabs soaked in alcohol (for plastic gears).
• 🧴 Toothbrush with soft bristles (for metal parts).

⚠️ Warning: Do not use aggressive solvents (e.g. acetone) - they can damage plastic and rubber seals. After cleaning, apply a thin layer of silicone lubricant to the rubbing surfaces of the gears. Excess lubrication will cause dust to stick!

Step 4: Checking and Replacing Bearings

Bearings are the most vulnerable part of the turbobrush, and they wear out by noise, vibration, or shaft jamming, to check them out.

1. Remove the bearings from the shaft with a thin screwdriver (plug the locking ring on the back side).
2. Scroll the bearing with your fingers - if you hear a crunch or feel a backlash, it needs to be replaced.
3. Wash the proper bearings in kerosene, dry and lubricate. to replace the bearings are suitable bearings size 608ZZ (internal diameter 8 mm).

🔹 Where to buy a replacement? Bearings 608ZZ are sold in power tool parts stores or on AliExpress (costs from 50 rubles apiece). When buying, make sure you want a closed (metal-protected) bearing, which lasts longer in a dusty environment.

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If the bearing is "buzzing" when rotating, but there is no backlash, it can be restored: wash in kerosene, dry with a hair dryer and apply the Liqui Moly LM50 lubricant, which will extend its service life by 3-6 months.

Step 5: Turbobrush assembly and testing

The assembly is carried out in reverse order, but there are a few critical points:

1. Make sure that all gears of the gearbox match the marks (usually they have small serifs or dots).
2. When installing the shaft, press it until you click - this means that the lock has stood in place.
3. Before closing the cover, check the brush by connecting it to the vacuum cleaner. If you hear grinding or uneven rotation, disassemble the brush again - most likely, the gears or shaft are installed incorrectly.

⚠️ Warning: After assembly, do not turn the brush on to maximum power immediately. Let the lubricant be distributed to the details: turn the vacuum cleaner on for 1-2 minutes in gentle mode (if any).

If the turbobrush is still unstable, check:

• 🔌 Contacts on the board -- they could have oxidized.
• 🔋 Motor wires -- sometimes they're rubbed against the body.
• ⚡ Voltage (should be 12–24 V, depending on the model).

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when disassembling Xiaomi Deerma, and here are the most common ones and ways to prevent them:

🔹 Expert advice: If you're disassembling a brush for the first time, videotape it, which will help you avoid assembly errors and make it easier to diagnose if something goes wrong.

FAQ: Answers to Frequent Questions