Disassembly of the Xiaomi motor-wheel M365: Detailed guide with photos and diagrams

Why you may need to disassemble the motor wheel Xiaomi M365?

Motor wheel is the “heart” of the electric scooter Xiaomi M365, And it can turn a comfortable ride into torture, and most often, owners are faced with extraneous noises (screaming, crunch, vibration), a power drop or a complete engine failure. The causes lie in wear of bearings, winding damage, moisture or mechanical damage after falls.

Disassembly of the motor-wheel M365 It's not just for repairs, it's also for maintenance, for example, cleaning and lubricating bearings every 5,000 to 7,000 kilometers extends the life of the device by 30 to 40 percent, but many people are afraid to do it themselves, for fear of damaging the winding or upsetting the wheel balance. In fact, with the right approach and tools, the process is no more difficult than replacing brake pads on a bicycle.

In this article you will find a step-by-step instruction with a photo, a list of necessary tools, as well as unique tips for diagnosing faults without a complete disassembly - this will save you time if the problem turns out to be something else (for example, in a controller or battery).

Preparation for disassembly: tools and security measures

Before you start, make sure you have everything you need, and without the right tools, you risk damaging the plastic body of the motor or breaking the bolt threads.

• 🔧 End keys for 10 mm and 13 mm (for removing the wheel from the frame).
• 🔧 Hexagon 5 mm - for unscrewing the engine fasteners.
• 🔧 A flat screwdriver with a thin sting (to separate the body).
• 🔧 Hammer and wooden bar - for careful removal of bearings.
• 🔧 Thermophen or hair dryer - if the wheel "stick" to the axis.
• 🧴 Lubricant for bearings (e.g. Liqui Moly) LM 50 or analog).
• 📸 Smartphone for photography – capture each step so as not to confuse details during assembly.

Pay special attention to security measures:

• ⚡ Turn off the scooter battery 10-15 minutes before work begins – this will discharge the capacitors in the controller.
• 🧤 Work in rubber gloves - the motor winding under voltage can "hit" even after power outage.
• 👓 Use safety glasses - when disassembling bearings, balls or fragments can fly out.

⚠️ Warning: If the scooter was in the rain or fell into a puddle, dry it for at least 24 hours in a warm room before disassembling. Moisture inside the motor may cause a short circuit when power is supplied after assembly.

Removal of the wheel from the frame of the scooter: step-by-step instructions

The first stage is to dismantle the wheel, and the main thing is not to rush and make unnecessary efforts not to bend the axle or damage the brake disc (if it is installed).

1. Turn the scooter upside down with wheels and fix the steering wheel so that it does not rotate (you can wind it with a belt or rope).
2. Unscrew 4 bolts of the wheel mounting with the end key by 13 mm. If the bolts are stiff, use WD-40 Or analogue, wait 5-10 minutes.
3. Remove the brake disc (if any), unscrewing 2 bolts by 5 mm. Carefully place it on a soft surface so as not to bend.
4. Disconnect the motor power connector from the controller. It's usually secured with a plastic clip -- put it in a screwdriver.
5. Remove the wheel axis from the frame slots. If the wheel is jammed, gently tap the axis with a hammer through a wooden bar.

At this point, many people have a problem: the wheel doesn't want to come out of the grooves even after the bolts have been unscrewed, and the reason is because the axis has been deformed after falling or corrosion.

• 🔥 Heat the place of attachment with a hairdryer (do not overheat above 60).°C!).
• 🛠️ Use a filmmaker or two carob keys as leverage.
• 💧 If the axis is rusty, treat it with a liquid key and wait 15 minutes.

Turned over the scooter and fixed the steering wheel.

Unscrewed 4 bolts of wheel mounting

Remove the brake disc (if any)

I disconnected the engine power connector.

He pulled the axis out of the frame.-->

Disassembly of the body of the motor-wheel: secrets and nuances

Now, the most important step is disassembling the body of the motor, and it's important not to damage the winding or lose the balls of bearings. M365 consists of two halves, fastened by 6 bolts under a hexagon of 5 mm and a sealant.

Step-by-step:

1. Unscrew all 6 bolts around the perimeter of the body. If the bolts do not lend themselves, do not put excessive effort - better use a screwdriver.
2. Insert a flat screwdriver into the process slot (usually located on the power connector) and carefully separate the halves of the body. If the case is "stuck", warm it up in a circle with a hairdryer.
3. Take the plastic cover off the inside of the wheel, and underneath it you'll see a stator with a winding and a rotor with magnets.
4. Carefully remove the rotor (the outer part with magnets). It can sit tightly - don't pull it by the magnets so as not to damage them.

Inside the building you will find:

• 🧲 Rotor – an outer ring with magnets.
• 🔄 Stator - inside with winding.
• ⚙️ Bearings are usually two: large (on the side of the wheel) and small (on the side of the axis).
• 🔌 Hall sensor – responsible for monitoring the position of the rotor.

⚠️ Warning: If you see rye on the stator winding or blackened areas during disassembly, this is a sign of moisture or short circuit, in which case the motor must be replaced, since rewinding costs more than a new wheel.

Diagnostics and repair of bearings

Bearings are the most vulnerable part of Xiaomi’s motor wheel M365. They wear out because of dust, moisture or lack of lubrication, signs of malfunction: backlash wheel, hum or crunch when rotating, heating the axle after the trip.

How to check bearings:

1. Turn the wheel with your hand – if you hear a crunch or grinding, the bearing is worn out.
2. Swing the wheel in the horizontal plane - backlash more than 1 mm indicates the need for replacement.
3. Check the axle temperature after 5-10 minutes of driving – if it is hot, the bearing works with increased friction.

Bearing replacement:

1. Remove the locking rings with circular pliers.
2. Press the old bearings with a suitable diameter tube or a removable bearing. Do not hit the bearing directly with a hammer!
3. Install new bearings (number) 6004-2RS large 6804-2RS small).
4. Then, put them in the ring, and then put them in the ring.
5. Apply lubrication (e.g., Liqui Moly) LM 50) 70-80% of the bearing volume.

If the bearings are still in normal condition but are noisy, they can be washed and lubricated:

• Remove the protective washers (if they are removed).
• Rinse the bearing in gasoline or kerosene.
• Dry and apply a new lubricant.

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If there is no special lubricant at hand, litol or solidol can be used temporarily, but they are less resistant to high temperatures and dry faster.

Checking and replacing the Hall sensor

Hall's sensor is responsible for synchronizing the motor and controller, and if it fails, the scooter starts to twitch when it accelerates, loses power or does not drive at all, and 80 percent of the time, the problem is solved by replacing the sensor, which costs only 300-500 rubles.

How to check the Hall sensor:

1. Disconnect the sensor connector from the controller board.
2. Connect the multimeter in mode DC 20V red-wise (+5V) black (GND) If you turn on the scooter, it should be 5 V.
3. Connect the multimeter to a signal wire (usually green or white) and mass. As the wheel rotates, the voltage should vary from 0 to 5 V.

If the voltage is not there or is not changing, the sensor is defective.

1. Set off the old sensor or gently cut its wires.
2. Seal the new sensor while observing polarity (usually marked on the case).
3. Isolate the connections with a shrink tube.

⚠️ Warning: When soldering the Hall sensor, do not overheat the body, which can disable the semiconductor element inside. Use a soldering iron with a power of no more than 40 watts and a solder with flux.

Motor wheel assembly: procedure and typical errors

Assembling is as much a process as disassembly, and the rule of thumb is that all the parts must fall into place effortlessly, and if something doesn't fit, you missed the step or you got the part wrong.

Step-by-step assembly instructions:

1. Install the rotor on the stator by combining the tags on the body (usually small serifs or stickers).
2. Check that the Hall sensor wires are not twisted or clamped.
3. Lubricate the rubber seal of the body with silicone lubricant for better tightness.
4. Combine the halves of the body and tighten the bolts cross-to-cross to avoid distortion.
5. Set the wheel on the frame, connect the power connector and fasten with bolts.

Typical errors in assembly:

• ❌ Bolt tugs – this deforms the body and can lead to rotor jamming.
• ❌ Disparity of marks on the rotor and stator - will cause vibration and uneven wear.
• ❌ The lubricant hitting the winding - leads to a short circuit.
• ❌ Forgot to connect the Hall sensor - the scooter will not go or will twitch.

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After assembly, be sure to check the motor-wheel without load: lift the scooter above the ground and let it work for 1-2 minutes at average speed. If there is no extraneous noise and heat, you can start traveling.

FAQ: Frequent questions about the dismantling of the Xiaomi motor wheel M365