Xiaomi Mi Electric Scooter has proven to be a reliable vehicle, but even time-tested models have mechanical damage. Most often, owners experience punctures or rubber wear, which requires immediate intervention. Replacing the rear wheel on the 365 model is a process that requires not only physical effort, but also understanding the electrical part of the device, since the engine is located in the hub.
Unlike the front wheel, the rear is connected to the frame through a complex system of shock absorbers and electrical connectors. Incorrect assembly can short-circuit or damage to the controller. In this article, we will discuss in detail each stage of dismantling and installation, paying special attention to the nuances of motor-wheel connection.
You don't have to be a professional mechanic to do this yourself, but having basic tool skills and understanding the electrical engineering will make it much easier, and keeping things consistent will ensure that your electric vehicle is safe and long-lasting after repair.
Tools and workplace preparation required
Before any repair work begins, you need to have a comfortable workspace, you need a flat surface where you can put the scooter without damaging the body, and you need to have all the tools ready in advance so you don't have to interrupt the process by finding the right part in the middle of the job.
The main tool will be a set of hexagonal keys, because the main nodes are attached to this standard, you will also need screwdrivers to work with small screws and perhaps pliers to fix nuts, and you will need plastic blades to avoid scratching the plastic when the elements are disconnected.
The critical point is to cut the power. Before touching any wires or connectors, make sure the scooter is off. For complete safety, it is recommended to disconnect the main battery connector from the controller, if the design allows you to do this without fully disassembling the deck.
- 🔧 Set of hexagonal keys (including dimensions 3, 4, 5 mm)
- 🪛 Cross and flat screwdriver
- 🔋 Gloves with anti-slip coating
- 🧴 Lubrication for threaded joints (optional)
- 🧹 Contact cleaner cloth
Pay special attention to clean hands and tools. Getting dust or dirt inside the motor wheel or on the connector contacts can lead to unstable engine operation in the future. If you work in a garage or workshop, try to minimize the amount of dust in the air.
Wing Dismantling and Access to Electrical Components
The replacement process begins with the removal of the rear wing, which prevents access to the top of the wheel and electrical connections. On the Xiaomi M365 and its modifications, the wing is attached with several screws located in the upper and lower parts of the structure. Carefully twist them out, trying not to break the thread.
Once the mounts are removed, the wing doesn't have to be pulled, it's not just on the screws, it's on the wires that go to the stop light and reflectors, and you can smoothly lift the wing and look at the space underneath, and you'll see the connectors that you need to turn off.
⚠️ Attention: Don't pull the wires! connectors often have locking latches that need to be gently pressed with your fingers or a thin screwdriver before being removed.
Disconnect all the visible cables coming from the wing, put it aside, and now you'll see the top of the motor wheel and the cable coming out of the engine axis, and this cable goes into the frame to the controller, and it's a key element that needs careful handling.
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Before removing the wing, take a picture of the location of all screws and wires - this will help not to confuse anything during the reverse assembly.
Disconnection of the motor wheel from the controller
The most difficult step for many users is to turn off the engine cable, which passes through the wheel axis and exits from the inside, connecting to the controller inside the deck, and to access this connection, it often requires removing the bottom protective panel or partially dismantling the platform.
Find the connector that comes from the rear wheel. It's usually a distinctive shape and color that distinguishes it from other connections in the system. On Xiaomi Pro models and standard versions, the connectors may differ in the number of contacts, but the principle of turning them off is similar.
Carefully disconnect the connector. If it sits tight, use plastic blades. Metal tools can damage the insulation or contacts, leading to oxidation and loss of signal in the future. Once the engine cable is turned off, it becomes free.
What to do if the connector does not disconnect?
Now that the electrical connection is severed, the wheel can be removed mechanically. Make sure that the cable is not tightened or interferes with the movement of parts. If the cable has a loop or a margin of length, carefully lay it inside the frame so that it does not damage further manipulation.
Mechanical removal of the rear wheel
The wheel is attached to the pendulum on both sides, and on the outside you'll see a nut or bolt that needs to be unscrewed, and on the inside, closer to the center of the scooter, is the reciprocating part of the mount, often hidden under a protective casing or rubber cap.
Use a key of the appropriate size to lock the nut on one side and twist the bolt on the other. Some scooter modifications require a specific key that comes with the repair tools. If there is no special key, a carrot key of the desired diameter will fit.
Once the fasteners are unscrewed, the wheel should be able to move out of the seat, but because of the weight of the motor and the possible sourness of the bearings, it can sit tight, and light swings from side to side will help to unsettle it.
- 🛑 Lock the scooter so it does not fall during the removal process.
- 🔩 Use penetrating lubricant if the bolts do not unscrew
- 👐 Support the wheel with the second hand when removing the axle
When you remove the wheel, keep an eye on the engine cable. It should exit freely, without hooks on the frame elements. A sudden movement can damage the insulation of the cable, which will make replacing the wheel meaningless, as you need to repair the wiring.
Installation of a new wheel and assembly of the structure
The new wheel is installed in the reverse-disassembly order. First, gently skewer the engine cable through the axle and inside the frame. Make sure the cable is not twisted and lies loose. Then insert the wheel axis into the pendulum seats.
Hold the wheel with fasteners. Tighten them evenly without tilting the wheel. Excessive force can damage the thread of the aluminum pendulum, so follow the measure. After mechanical fixation, switch to an electrical connection.
Connect the motor-wheel connector to the controller connector. You should hear a characteristic click confirming the fixation. Make sure that the wires do not fall into friction zones against moving parts or sharp edges of metal elements.
☑️ Checking the wheel installation
Once you've got the electrician in place, put the rear wing in place, connect the stop lights and reflectors, secure the wing with screws, and then you can do a first check on the system.
Setting and calibration after replacement
After physically changing the wheel and assembling all the components, you need to make sure that the scooter “sees” the new engine and works correctly. In most cases, the Xiaomi M365 and its counterparts do not require complex firmware when replacing the wheel, since the controller determines the engine parameters.
But you should check the Hall sensors, and you should turn on the scooter and lift the rear wheel slightly. You should smoothly press the gas. The wheel should start spinning without jerking or making any extraneous noises. If you hear a crack or the wheel twitching, maybe the connector is not connected correctly or damaged.
It is also recommended to calibrate the gyroscope if the scooter has been in an inverted or inclined state for a long time during the repair process. To do this, place the scooter on a flat surface, turn it off, and then press the gas trigger and turn on the power. Hold the trigger for a few seconds before the beep.
| Parameter | Normal value. | Sign of a problem |
|---|---|---|
| Rotation of the wheel | Smooth, no noise. | Sniffles, hums, crackles |
| Heating the engine | Warm state. | Severe overheating in 1-2 minutes |
| Idle current | Stable. | Value jumps |
| Gas response | Instant. | Delay or lack of response |
If the tests are successful, you can take a short trial ride in a safe place. Pay attention to the scooter's acceleration and braking behavior. Lack of vibrations and extraneous noise indicates that the replacement was correctly performed.
Frequent errors and precautions
One of the most common mistakes is ignoring the cable condition when installed, so if the motor cable is squeezed or pulled, the insulation will quickly be rubbed when vibrating while driving, which will short-circuit and potentially cause the controller to fail.
⚠️ Warning: Never leave motor-wheel connectors unprotected inside the deck, moisture and dust can cause contact corrosion, which will manifest itself after a few weeks of operation.
Another mistake is to use the wrong fasteners. If you lose the original bolt, don't replace it with the first one you find from the hardware store. Metal can be too soft or fragile, which is dangerous for dynamic loads.
Also, keep in mind the momentum track (inertia) bearings can be dry when changing wheels, and it is recommended to check them and lubricate them if necessary to ensure smooth running and reduce the load on the engine.
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The key to a successful replacement is to work carefully with the electrical cable that exits the motor-wheel axis, and damage to it makes simple repairs a difficult task of soldering and restoring wiring.
Compliance with these simple rules will allow you to avoid re-repair and prolong the life of your vehicle. Regular inspection of the nodes after replacement will help to identify minor shortcomings in time.