Disassembly of the electric scooter Xiaomi: how to remove the motor-wheel without damage

Xiaomi scooters are some of the most popular vehicles in the city, but even they are not immune to breakdowns. One of the most common problems is motor-wheel malfunction: extraneous noise, loss of power or complete failure. If you are faced with this situation, do not rush to take the scooter to the service, you can dismantle the motor-wheel yourself with a minimum set of tools and patience.

In this article, we will discuss in detail the process of removing the motor wheel on Xiaomi models. M365, Pro, Pro 2, 1S You will learn what tools you need, how to avoid common errors (such as damage to cables or bearings), and also get tips on diagnosing malfunctions before dismantling, and pay special attention to the nouns of wheel mounting, which are often missed by beginners: for example, why you can not just "pull out" the power connector or how to fix the axis correctly when unscrewing the nuts.

If you've never done an electrical repair before, don't worry, it's a neat process, but it's easy for beginners to do it, and the key is to follow the instructions and take your time, and for those of you who already have experience, we've created unique life hacks to speed up disassembly and check the engine without completely dismantling.

What tools will be needed to remove the motor wheel

Before you start disassembling, prepare everything you need, and not even one tool can stall the process in the middle.

• 🔧 14 mm end key (or head with a collar) - for unscrewing the wheel axis.
• 🔨 Screwdriver cross (PH2) — for removing plastic covers and braking system fasteners.
• 🔧 Hexagon for 5 mm - is needed for unscrewing bolts that fix the brake disc (if any).
• 🔧 Flat-bottoms or passages - will help to hold the axis when unscrewing nuts.
• 🔧 Plastic filmer or mounting blade - for careful removal of the wheel cover without scratches.
• 🔌 Multimeter (optional) - to check the windings of the engine for a break or short circuit.
• 🧴 Lubricant WD-40 Or similarly, if the nuts are boiled or rusted.
• 📦 Container for small parts - so as not to lose washers, bolts or springs.

If you have a disc brake model (such as the Xiaomi Pro 2), additionally prepare replacement brake pads – they are often damaged when the wheel is not removed neatly, and rags will also be useful for cleaning the axle and bearings from old lubrication.

⚠️ Attention: Do not use percussion tools (hammer, chisel) to unscrew the nuts! This can damage the axle thread or deform bearings. If the nut does not respond, treat it. WD-40 And wait 10-15 minutes.

Preparation of the electric scooter for disassembly: safety steps

Before you start, make sure that the scooter is completely de-energized. Even if the battery is discharged, the residual current in the capacitors can damage the electronics if you carelessly handle it.

1. Turn off the scooter with the power button and wait for the indicators to completely turn off.
2. Disconnect the battery by removing the battery compartment cover (on models) M365 And Pro, it's mounted on 4 screws).
3. If the battery is non-removable (as in Pro 2), disconnect the power connector of the motor-wheel from the controller.
4. Turn the scooter upside down with wheels, pre-putting soft fabric under the steering wheel so as not to scratch the display.

Pay special attention to the brake system. If your model has a disc brake, lock the pads with wire or rubber so that they do not disperse and fall out when the wheel is removed. 1S) It is enough to disconnect the connector from the controller.

Disconnect power and remove the battery|

Lock brake pads (if there is a disc brake)|

Put soft fabric under the steering wheel and display|

Prepare a container for small parts|

Process it. WD-40 stained-up (if necessary)-->

If you plan to check the motor with a multimeter, remember the color marking of the wires:

• Red plus food (+).
• Black is minus (-).
• Green/Yellow/White – Hall sensor signal wires (responsible for speed control).

Don’t confuse them when they are reassembled!

Step-by-step: how to remove the motor-wheel from Xiaomi M365/Pro

The dismantling process is the same for most Xiaomi models, but there are nuances depending on the type of brake and axle mounting. M365:

Step 1: Removal of the plastic wheel cover

On the rear wheel (where the motor is located), there is a plastic cover with the Xiaomi logo attached to the latches. Carefully tuck it in with a plastic blade or screwdriver, starting at the edge next to the brake. Don't use excessive force - the plastic is fragile!

Under the lid, you'll see:

• The axis of the wheels with nuts on the sides.
• The power connector of the motor (3-5 wires).
• Brake mechanism (if any).

Step 2: Untwisting the axis nuts

The nuts on the axis are twisted with great effort, so:

1. Set the axis on one side with pliers or end key.
2. On the other hand, unscrew the nut counterclockwise.
3. Repeat for the second nut.

If the nuts don't lend themselves, apply them. WD-40 And wait 10 minutes.

⚠️ Warning: Some models (Pro 2) have locking washers under their nuts. Don't lose them, without them, the wheel will slug!

Step 3: Disconnect the motor connector

Carefully pull the power connector out of the socket. Don't pull the wires -- they're soldered to the motor board and they can come off. If the connector is tight, put a thin screwdriver in it.

In models with a Hall sensor (responsible for speed control), the connector can be fixed with a plastic clip, and it must be snapped beforehand.

Step 4: Remove the wheel from the axle

Once the nuts are unscrewed, the wheel should easily slide off the axle.

• Move the wheel left-right, pulling at the same time.
• If it doesn't help, apply it. WD-40 on the axis and wait 5-10 minutes.
• Don’t knock with a hammer – it will damage the bearings!

💡

If the wheel is removed, but the motor is not rotating smoothly, check the bearings. Take the wheel by the axle and swing up and down. Luft or creaking indicates the need to replace bearings.

Features of dismantling on Pro 2 models, 1S Essential

Although the principle of removing the motor wheel on all scooters Xiaomi is similar, there are key differences:

On Pro 2 and 1S Often there is a problem with boiling nuts due to moisture. If standard methods do not help, try heating the nut with a building hair dryer (no more than 100).°C) - this will expand the metal and facilitate unscrewing.

On the Essential, the motor is less powerful, but it is easier to dismantle due to the lack of a Hall sensor. However, be careful with the wires - they are thinner than on flagship models and are easier to tear.

Diagnosis of motor-wheel malfunctions: what to check after removal

When the wheel is removed, you can start to diagnose, and here are the main faults and how to detect them:

Checking the windings of the engine

Use the multimeter in resistance testing mode (200 ohms):

• Connect the probes to the red and black wires (motor power) and the resistance should be between 0.2 and 0.5 Ohms.
• If resistance is 0 ohms, short circuit.
• If infinity (OL) — winding-off.

2.A check of Hall's sensor

On models with a sensor (Pro 2, 1S):

• Connect the probes to the green and black wires.
• Rotate the wheel manually - resistance should vary in the range of 100-500 ohms.
• If the readings are static, the sensor is defective.

Inspection of bearings

Take the wheel by the axle and swing up and down.

• Wearing of bearings (replacement required).
• Getting dirt (need to wash and lubricate).

To replace bearings, you will need a receiver and new parts (for example, 6004-2RS for M365).

4. Visual examination

Look for:

• 🔥 Burned or melted wires (sign of short circuit).
• 💧 traces of moisture or corrosion (especially on the connector).
• 🧲 Extraneous metal particles on motor magnets (say about the destruction of bearings).

💡

If the motor is externally healthy, but the scooter is not going, the problem may be in the controller or battery. Check the voltage on the motor connector when pressed on the gas - it must be at least 36 V (for the engine connector). M365).

Typical errors when removing the motor wheel and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to additional breakdowns.

1. Damage to the motor connector when you twitch sharply. Always snap the lock (if you have one) and pull the connector body instead of the wires.
2. Loss of locking washers under the nuts. Without them, the wheel will dangle, causing the bearings to beat and wear out.
3. Twisting wires when you reassemble them, remember or photograph their location before you turn them off.
4. Using a hammer to remove the boiling wheel, it deforms the axle and bearings. WD-40 patience.
5. Ignoring the brake system, if you don't lock the pads, they can fall out and get lost.

Another common mistake is the wrong nut tightening when you reassemble. If you pull, the bearings will quickly fail; if you don't pull, the wheel will slug. The optimal tightening force for the axle nuts is 40-50 Nm (use a dynamometer key if you have one).

⚠️ Warning: On disc brake models (Pro 2) do not press the brake lever after removing the wheel! the pads will close and you will have to open them manually, risking damage to the spring.

Reverse assembly: how to install the motor-wheel back

When the diagnosis or repair is complete, start the assembly.

1. Clean the axis of the old lubricant and dirt with rags. Apply a thin layer of lithium lubricant.
2. Put the wheel on the axle, combining bolt holes (if there is a brake disc).
3. You can screw the screws manually, then you can lock the key.
4. Connect the motor connector, making sure that the lock is latched.
5. Install a plastic cover starting from the brake side.
6. Connect the battery and check the engine without getting on the scooter (keep it on weight).

After assembly, be sure to check:

• 🔄 Smoothness of rotation of the wheel (there should be no backlash or creaking).
• 🚦 Brake operation (if the wheel is not fully locked, adjust the pads).
• ⚡ Reaction to gas (the engine should gradually gain momentum without jerking).

If the scooter is not driving or makes extraneous sounds, check again:

• Correct connection of the motor connector.
• Puff nuts (backlash even 1 mm can cause vibration).
• The condition of the bearings (when worn, they must be replaced).

💡

After assembly, drive 100 to 200 meters at low speed, listening to the sounds. If there is a hum or a rumble, stop right away and check the mounting of the wheel.

FAQ: Frequent questions about removing the motor wheel on Xiaomi