Removing the rear wheel of the Xiaomi electric scooter: instructions for all models

Replacement of tires, repair of the engine or replacement of bearings – sooner or later every Xiaomi owner M365, Pro, Pro 2 or 1S But if the front wheel is easy (just unscrew the nut and remove the wing), the rear wheel requires care: there is an electric motor, wires and a speed sensor. A breakdown error can result in cables breaking, controller damage, or even short circuit.

In this article, we will take a step-by-step approach from tool preparation to reassembly, and focus on the key differences between models (e.g., the Xiaomi Pro 2 uses a different type of motor attachment) and the typical mistakes that beginners make. If you’ve never disassembled an electric scooter, don’t worry: our instructions and photos can be handled in 30 to 40 minutes.

⚠️ Warning: Don't start unless you're confident in your brazing or wiring skills, and damage to your motor's power cable can knock out your controller -- and it costs 30 to 50 percent of the cost of a new scooter.

Before you start, check if your model is covered by a warranty. Most Xiaomi service centers refuse warranty repairs after self-intervention - even if the problem is not related to the wheel.

What tools will you need

Xiaomi doesn't need exotic devices to remove the rear wheel, but there are a few nuances:

1. Head or key 10 mm - for unscrewing axis nuts. In some models (for example, Xiaomi) 1S) They use stainless nuts, and a regular carob key can lick them, and you'd better use a cap key or a rattlehead.

2. 5 mm hexagon - for braking disc attachment (if fitted). M365 Pro disk is attached with two bolts, in Pro 2 - four.

3. Flat screwdriver to tweak plastic clips of the engine cover. Do not use a metal screwdriver without insulation - you risk closing contacts!

4 Passenger or round-cutting wheels - useful for removing the locking rings of bearings (if you plan to replace them).

5 Multimeter – to check the integrity of the motor winding after disassembly (optional, but recommended).

6. Silicone lubrication - for processing bearings during assembly (for example, WD-40 Specialist).

⚠️ Note: If you have a disc brake model (e.g. Xiaomi Pro 2), additionally prepare the brake fluid. DOT 4 and pumping key - after removing the wheel, it may be necessary to pump the brake system.

Don't skimp on tools: cheap soft metal keys can round the nut faces, making it harder to build. M365 often "stick" - without a high-quality tool, it is almost impossible to unscrew them.

Scooter preparation: what to do before disassembly

Before you take up the tools, follow a few mandatory steps:

1. Turn off the power. Remove the battery from the scooter, which will eliminate the risk of short circuits in the event of accidental circuit of the wires. 1S) It is enough to disconnect the controller power connector.

2. Clean the wheel and frame. Mud and sand can get into bearings or motor contacts. Use a wet cloth and compressed air (for example, a canister to clean the keyboard).

3. Take a picture of the original position of the wires, which will help connect them correctly when you build them, and pay special attention to the Hall sensor, which is often confused with the cables of the motor.

4 Check the tire pressure. If the wheel is flat, remove the tire before the engine is removed, so it's easier to avoid damage to the camera.

5 Prepare the workplace. Put the tools and parts on a clean surface. For small screws and nuts, use a magnetic pallet or container with cells.

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If the axle nuts do not unscrew due to rust, apply to the thread WD-40 Or kerosene for 10 to 15 minutes. Don't hit the key with a hammer, you risk bending the axle or ripping the thread.

Step-by-step: how to remove the rear wheel

The dismantling process is the same for most Xiaomi models, but there are differences in the mounting of the motor and brake disc. We will describe a universal algorithm with specifications for specific versions.

Step 1 Removal of the brake disc (if any)

On models with disc brake (Xiaomi Pro 2, 1S) First, unscrew two or four bolts of the disk attachment to the hub. Use a 5mm hexagon. Don't lose the spring washers - without them, the disk will dangle!

Step 2. Disconnect the wires

Carefully remove the plastic engine cover (plug it in the side with a screwdriver) and you'll see below the lid:

• 🔌 Three thick wires (motor phases) – usually yellow, green, blue.
• 📡 Five thin wires (Hall sensor) - black, red, white, green, yellow.
• ⚫ Black wire (mass).

If they're stuck, don't pull, gently swing from side to side. M365 Pro connectors are often oxidized - if necessary, clean the contacts with alcohol.

Step 3: Unscrewing the axis nuts

Turn the scooter over and lock it upright (you can steer it against the wall). With a 10 mm key, unscrew the two nuts on either side of the axle. The Xiaomi Pro 2 uses an additional counternut — first weaken it, then the main one.

Step 4: Remove the wheel from the frame

Once the nuts are unscrewed, the wheel may not be removed because of the bearings that are stuck. Carefully tap the axis with a hammer through a wooden pad. Don't hit the hub, you may damage the winding of the motor!

Step 5: Dismount the motor from the hub

If you need to get to bearings or windings, unscrew six motor mount bolts to the hub (hexagon 4mm). 1S The bolts could be under a star T20.

Check the integrity of the wires.|Clean the contacts from oxidation|Grease the bearings|Make sure the brake disc rotates freely|Tighten the axis nuts with a force of 40-50 N·m-->

Differences between models: Xiaomi M365 vs Pro vs Pro 2 vs 1S

While the design of Xiaomi scooters is similar, there are key differences that affect the process of removing the wheel.

⚠️ Attention: In Xiaomi Pro 2, the motor wires are soldered to the controller. To disconnect them, you will need a soldering iron with a power of 60-80 watts and a solder with a roanifole. If you are not sure about soldering skills, contact the service.

In models 1S Pro 2 is used in the system E-ABS (When disassembling, remember to disconnect the connector, which is located next to the Hall sensor and often interferes with the removal of the engine cover.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling Xiaomi’s rear wheel, and we’ve collected some of the most common ones — and ways to prevent them.

1. Hall sensor wire break

The thin wires of the sensor are easy to break if you pull them or bend them. Always disconnect the connector, not pull the wires! In the Xiaomi Pro 2, where the wires are soldered, use a heat shrink tube for insulation after soldering.

2. Loss of bearing locking rings

When disassembling the hub, locking rings (especially internal ones) can "shot out" and get lost.Prepare a small box in advance to put them there. M365 and Pro are used rings diameter 17×1.5 mm.

3. Incorrect tightening of axle nuts

Too little puff will cause the wheel to lash, too much will cause the bearings to deform — 40–50 If you do not have a dynamometer key, twist the nuts "to the point" plus 1/4 turnover.

4.Confusion with wires during assembly

If you confuse the engine phases (yellow, green, blue), the scooter will not go or start to twitch. Always check the photo taken before disassembly. In the Xiaomi Pro 2, the color markings may differ - check by the controller circuit.

5. Ignoring bearing lubrication

Many people forget to lubricate the bearings when they are assembled, which causes them to wear out quickly. Use lithium or silicone lubrication, but don't overdo it: excess lubrication will attract dirt.

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The most common failure after improper disassembly is a break in the wire of the Hall sensor, which will cost 1,500-2,500 rubles to replace, so always disconnect the connectors carefully!

When to contact the service

Not all rear wheel failures can be repaired by yourself, but here are some cases where you can trust the professionals:

1.Controller problems

If after assembly the scooter does not turn on, twitches or shows an error E014 (motor failure, the cause may be damage to the controller, the diagnosis requires special equipment (e.g., an oscilloscope).

Replacement of motor windings

Winding is a complex process that requires precision, and an error in the number of turns or the cross section of the wire will lead to loss of power or overheating, which costs 3,000 to 5,000 rubles in service, but guarantees performance.

Repair of hydraulic brakes

Xiaomi Pro 2 uses a hydraulic braking system, and if the brakes are too wobbly after the wheel is removed or the pedal fails, it will require pumping, which is difficult to do without experience.

Replacement of the wheel axle

If the axle is bent or cracked, it needs to be replaced, and this requires a press or a special camera — at home, the risk of damaging the frame is too great.

5. Controller firmware errors

Sometimes after the disassembly, the scooter makes a mistake. E012 (This may mean that the firmware "flyed off" or is not suitable for the installed engine.

⚠️ Warning: If you've never soldered or worked with electrical wiring, don't try to repair the engine wires yourself. Short circuits can disable not only the controller, but also the battery - and this is already a risk of fire!

Tips for care after assembly

To make the back wheel last longer, follow these recommendations:

1. Check the tire pressure

Optimal pressure for Xiaomi scooters is 35–40 PSI (2.4–2.8 bar). Too low pressure increases the risk of a puncture, too high reduces comfort and accelerates bearing wear.

2. Clean the motor contacts

Every 500–1000 km, open the motor cover and clean the contacts with isopropyl alcohol. Oxidation can cause errors E014 or E015.

3. Lubricate the bearings

Use silicone or lithium grease every 2000–3000 km. Avoid graphite lubricants — they attract dust.

4. Check the brake pads

In models with disc brakes (Pro 2, 1S), the pads wear out every 1000–1500 km. Replace them in time to avoid damaging the disc.

5. Avoid riding in the rain

Water can get into the motor bearings or controller. If you do get caught in the rain, dry the scooter with a hairdryer (cold air!) and lubricate the bearings.

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When you replace your tire or camera, always balance the wheel. Imbalance leads to vibrations at high speed and accelerated wear of bearings. At home, you can use balancing loaders for bicycles (stick to the rim).

FAQ: Frequent questions about removing the rear wheel Xiaomi