How to remove the motor-wheel on Xiaomi M365: nuanced

Xiaomi electric scooter M365 — One of the most popular compact vehicles, but even it wears out the wheels over time or fails the built-in motor. If you notice uneven tread wear, extraneous noise while driving or power drop, you will most likely need to dismantle the wheel for diagnosis or replacement. M365 without damaging the electronics and mechanical components.

The process seems simple, but there are pitfalls, from the wrong wires to the risk of damaging bearings or motor windings, and we will describe each step in detail, from tool preparation to reverse assembly, and also point out the typical mistakes that beginners make, especially the rear wheel, because it is equipped with a motor and requires accuracy when working with wires and sensors.

If you've never disassembled an electric scooter, don't worry: with instructions and precautions, the task is quite feasible even without experience.

Preparation: security tools and measures

Before you start dismantling, make sure you have everything you need, and without the right tools, you run the risk of breaking the thread, damaging the plastic parts, or even getting hurt.

• 🔧 Hexagonal keys (dimensions 2 mm, 2.5 mm, 5 mm) - for unscrewing the wheel mounting bolts and the braking system.
• 🔨 End key or head 14 mm - for the nut of the wheel axis (sometimes suitable and carob key, but end more convenient).
• 🔪 Flat screwdriver - for careful tweaking of plastic clips and covers.
• 🧲 Magnet or tray for fasteners - so as not to lose small bolts and washers.
• 🔌 Multimeter (optional) – to check the integrity of the motor wires after dismantling.
• 🧤 Nitrile gloves – protection of hands from dirt and sharp edges of metal parts.

Also, prepare the workplace: a flat surface (better a table), good lighting and enough space to decompose parts. If the scooter is dirty, pre-wipe the wheel and the area around it with a wet cloth - this will prevent sand from entering the bearings when assembled.

⚠️ Warning: Never start disassembling unless the scooter is powered off! Even when it is off, the capacitors in the controller can keep charge. Unplug the battery or wait for the scooter to be completely discharged (leave the scooter off for 10-15 minutes).

If you are planning to replace a wheel or motor, buy a set of new bolts and nuts in advance - often when dismantling the thread is damaged, and old fasteners become unreliable. M365 I'll fit the threaded bolts. M6 and the sleeves (so that they do not fall apart when they are vibrating).

Removal of the rear motor-wheel: step-by-step instructions

The back wheel on Xiaomi M365 It's a brushless motor, so it's harder to dismantle than the front one, so let's start by turning off the electrical connections so that the wires don't get damaged.

Step 1: Turn off motor wires and speed sensor

Turn the scooter upside down with your wheels (you can put soft fabric under the steering wheel so you don't scratch the display). Remove the plastic cover covering the engine connectors, it's mounted on two latches. Carefully put it in a flat screwdriver, starting at the edge closer to the wheel.

Under the lid, you'll see:

• 🔌 Thick 3-core connector (motor power, usually black or blue).
• 🔌 Thin 5-core connector (Holl sensor for speed control, white or gray).

Disconnect both connectors by pulling the plastic tongues (don't pull the wires!) If the connectors are "stiffened," don't force - splash a little. WD-40 Or alcohol and wait 1-2 minutes.

Battery is off or scooter is discharged|Photos of connectors made (so as not to confuse the assembly)|Tools at hand|Working surface clean-->

Step 2: Dismantling the braking system

The wheel is fixed not only by the axle nut, but also by the brake mechanism. First unscrew the two bolts of the brake disc mounting (a 2.5 mm hexagon). Then relax the tension of the brake cable by unscrewing the adjustment bolt on the brake handle (a 2 mm hexagon is required).

If the brake disc is stuck to the wheel, do not hit it with a hammer - this can deform the rotor. Instead, knock evenly on the rim of the wheel with a rubber hammer or through a wooden pad.

Step 3: Untwisting the axle nut and removing the wheel

Now, to the most important part, the axis nut is twisted with a big moment, so:

1. Set the wheel between the spokes (so that it does not scroll).
2. Put the end key on 14 mm and take a sharp movement to remove the nut (counterclockwise). If you do not give in, use a lever (for example, a pipe), but without fanaticism - the broken thread will cause many problems.

After removing the nut, carefully remove the washers and pull the axle. The wheel should easily slide off the shaft. If it is jammed, check if the brake disc or motor wires interfere.

⚠️ Warning: When removing the wheel, do not pull the motor wires, they can break away from the rations inside the hub. Hold the wheel by the rim or spokes, and hold the wires with the second hand.

Removal of the front wheel: features and differences

Front wheel on Xiaomi M365 It's not powered by a motor, so it's easier to dismantle:

• 🔄 No wires – no need to turn off the connectors, but the brake mechanism (if installed) is removed in the same way as on the rear wheel.
• 🔧 The axis nut can be twisted with less force, but sometimes it cries due to corrosion.
• ⚠️ The bearings in the front wheel are more likely to fail due to the load when cornering.

Instructions for dismantling the front wheel:

1. Turn over the scooter and lock the steering wheel.
2. Unscrew the axle nut by a key of 14 mm (similar to the rear wheel).
3. Remove the washers and move the wheel carefully from the shaft. If it does not remove, check if the bearing or dirt on the axle interferes.

If you remove the wheel to replace bearings, pay attention to their marking. for Xiaomi M365 bearings 6004-2RS (size 20×42×12 When buying, take closed bearings - they are better protected from dust and moisture.

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Apply a little lubrication before assembly (Litol)-24 or-4) This will extend the life of the bearings and reduce noise when driving.

Diagnostics of motor and wheel after removal

When the wheel is removed, you can do a preliminary diagnostic.

To check the engine:

1. Visually inspect the winding for darkening or melting, and if the motor smells of a burn, it's burned and needs to be replaced.
2. Call the multimeter winding in resistance mode. Normal resistance between phases is 0.2-0.5 Ohms. If it shows 0 (short circuit) or ∞ (cliff, engine malfunction.
3. Check the integrity of the Hall sensor wires, and they're often rubbed at the base of the connector.

If the bearings are the problem, you can replace them yourself.

• Remove rubber plugs on both sides of the wheel (plug with a screwdriver).
• Beat the bearings with a mandrel (you can use the old axle).
• Install new bearings by evenly pressing them with a hammer through a wooden spacer.

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If the motor is externally healthy, but the scooter is not going, the problem may lie in the controller or battery. Before changing the motor, check the voltage on its connector when pressing the gas (should be the case). ~36-42 V).

Common Mistakes and How to Avoid Them

Even experienced masters sometimes make mistakes when disassembling Xiaomi M365. Here are the most common ones and ways to prevent them:

• 🔧 A broken axle or nut thread is caused by excessive effort or by a wrong tool. Always use the end key and don't use excessive force. If the thread is already broken, you'll have to replace the axle or nut.
• 🔌 Motor connector damage -- often the connectors break down when you're not sloppy. Always pull on the plastic case, not the wires. If the contacts are oxidized, clean them with alcohol or a swallow.
• ⚡ Short circuit when checking the engine — if you call the motor a multimeter, don't touch the two contacts and the body at the same time.
• 🔄 Tangled wires when you build -- take a picture of the jacks before you shut them down. The Hall sensor is polar, and if you don't connect it correctly, the scooter won't go.

Another common problem is that the brake disc is damaged when it is dismantled, and if the disc is bent, it can be leveled with a hammer on a flat surface (for example, on an anvil), but it is better to replace it, and the bent disc will cling to the brake pads, which will lead to rapid wear and decrease in braking efficiency.

Critical nuance: if after assembly the scooter does not turn on or gives an error E014 (Motor error is likely to be a faulty Hall sensor or its wires, and 80 percent of the time, the problem is solved by replacing the sensor, not the entire motor.

Assembly and running after replacement

When the wheel is repaired or replaced, start the reverse assembly.

1. Install the wheel on the axle, combining holes for the bolts of the brake disc.
2. Tighten the brake cable so that the pads do not rub against the disk, but also do not have a large backlash.
3. Twirl the axis nut with a force of 40-50 N·m (do not pull!).
4. Connect the motor and Hall sensor connectors, making sure they sit tightly.
5. Set the plastic cover in place by snapping the clips.

After assembly:

• Check the free rotation of the wheel – it should not cling to brake pads or frame.
• Turn on the scooter and test the engine at minimum speed. If you hear foreign sounds (screaming, vibration), immediately turn off and check the assembly.
• Drive 1-2 km at low speed to make sure there are no backlashes and overheating.

⚠️ Attention: If after replacing the wheel, the scooter became worse to brake, check the gap between the pads and the disc. It should be 0.2-0.5 mm.

When do you call the service?

Not all breakdowns can be repaired by yourself. Contact the service center if:

• 🔥 The engine burned (seen melting of the winding or the smell of burning) – rewinding or replacement is required.
• 🔌 The wires inside the hub of the wheel are damaged - their soldering requires special equipment.
• ⚠️ The scooter makes mistakes E010–E015, which do not disappear after rebooting.
• 🛠️ Requires replacement of bearings in the motor wheel (without experience it is easy to damage the winding).

The cost of repair in the service depends on the problem:

If you decide to repair yourself, but are not confident in their abilities, buy a used wheel assembled at the disassembly (costs about 2000-3000). ₽) And practice on it. It's cheaper than paying for repairs after a failed attempt.

FAQ: Frequent questions about dismantling the wheel on Xiaomi M365