How to remove the rear wheel on Xiaomi M365 Pro: instructions with photos and videos

Why remove the rear wheel on the Xiaomi M365 Pro?

The rear wheel of the Xiaomi M365 Pro is not just a design element, but a key unit that combines the engine, braking system and transmission. Unlike the front wheel, its dismantling is required much more often: to replace the tire, repair the engine, clean the brake pads or eliminate the backlash in the bearings. According to statistics from service centers, 70% of scooters breakages of this model are somehow related to the rear axle.

But disassembling the wheel is not an easy task, and it's important to consider the nuances of choosing the right tools to unscrew the bolts so that you don't damage the engine controller or break the thread in the frame, and this guide will help you avoid the typical mistakes that owners face when they first make their own repairs.

Before you start, make sure that the problem does require the wheel to be removed. For example, if the scooter is not going, but the display shows an E01 or E02 error, the cause may be a malfunction of the battery or controller, not the mechanics of the wheel.

Preparation: security tools and measures

To dismantle the rear wheel of the Xiaomi M365 Pro, you will need a specialized set of tools. Without them, the risk of damage to the scooter increases significantly.

• 🔧 End key 5 mm (or head with a rattle) - for unscrewing the main bolts of the axis.
• 🔧 Hexagon 2.5 mm - for removal of the brake mechanism.
• 🔧 Flat screwdriver - for slashing the engine cover.
• 🔧 Hammer (rubber or small metal) – may be required to gently knock out the axis.
• 🔧 Tips or strubsin - for fixing the frame when unscrewing tight bolts.
• 🧴 WD-40 or similar lubrication - if the bolts are acidified.
• 📦 Plastic container - for storing small parts (nuts, washers).

Pay special attention to safety:

• ⚡ Disconnect the scooter from charging and completely discharge the battery (up to 0%) - this will eliminate the risk of short circuit when working with the engine.
• 🧤 Work in gloves - the edges of metal parts are sharp and brake dust is harmful to the skin.
• 📸 Take photos of each stage of disassembly, especially the location of the wires and mounts, which will make it easier to reverse assemble.

⚠️ Warning: If you haven't done electrical repair before, avoid disassembling the sleeve engine yourself. Its internal design contains powerful magnets that, if handled carelessly, can fly and cause injury.

💡

Before starting work, put the scooter on a soft surface (for example, cardboard or a towel) so as not to scratch the frame and lose small details.

Step-by-step: Removal of the rear wheel

Now, to the process itself, follow the instructions strictly in steps so that you don't miss important details:

1. Step 1: Remove the brake mechanism. With a 2.5 mm hexagon, unscrew the two bolts that attach the brake caliper to the frame. Carefully remove the caliper and put it aside without pressing the brake lever - this can squeeze the pistons out of the cylinder. Brake pads are better not to disconnect unless you plan to replace them.
2. Step 2: Unplug the engine wires. Under the plastic wheel cover (which is mounted on the latches) there is a power connector in the engine. Put the lid on with a flat screwdriver and disconnect the connector. Don't pull the wires, just behind the plastic connector case! Otherwise, you can tear the contacts off the controller board.
3. Step 3: Untwisting the wheel axis. This will require a 5 mm end key. The bolts are twisted with great force, so lock the frame in the vise or ask the assistant to hold the scooter. Untwist the bolts in turn, first weakening them by several turns to avoid axis skewing. What to do if the bolts do not untwist? If the bolts are "sty", treat them WD-40 and wait 10-15 minutes. Then try to untwrap them again, if necessary, using the hammer for an excessively repair of the key.
4. Step 4: Remove the wheel from the frame. After unscrewing the bolts, carefully pull the axle out of the grooves. The wheel may sit tightly -- don't pull it tightly, but sway it from side to side, gradually removing it. If the wheel fails, make sure that the mounts or wires are undetected.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the rear wheel of the Xiaomi M365 Pro. Here are the most common of them and ways to prevent them:

Another critical mistake is the wrong tightening of the axle bolts when you reassemble. If you pull it, you can deform the frame; if you don't pull it, the wheel will fall back. The optimal tightening force for the Xiaomi M365 Pro axis bolts is 6-8 Nm. Use a dynamometer key if you have one in your arsenal.

⚠️ Warning: After removing the wheel, do not place it on the engine upwards - this can lead to dirt or metal shavings entering the engine. Always keep the wheel upright or downward by the engine.

Cleaning and Diagnostics of the Removed Wheel

Once the wheel is removed, you have a great opportunity to do a full diagnostic.

• 🔍 Tire: Check for cuts, bulges or tread wear. Tread depth should be at least 1 mm. If less, it is time to change the tire.
• 🔍 Bearings: Turn the wheel by hand. If you hear a crunch or a slug, the bearings need to be replaced. M365 Pro fit bearings 6004-2RS (size 20×42×12 mm).
• 🔍 Engine: Check the body for cracks or signs of overheating (blackening), check whether the engine shaft is rotating freely. If the engine is jammed, it will need to be disassembled or replaced.
• 🔍 Brake disc: It must be flat, free of deep scratches or deformations, maximum permissible disc thickness is 1.8 mm (new disc has a thickness of 2.2 mm).

Use:

• 🧽 Soft brush - to remove dirt from the engine body and brake mechanism.
• 🧴 Isopropyl alcohol - for cleaning the contacts of the engine connector.
• 🧴 Special brake cleaner – to remove plaque from the pads and disc (do not use gasoline or solvents!).

If you find a faulty engine (for example, it does not rotate or sparkles), do not rush to throw it away. In 60% of cases, the problem is solved by cleaning the contacts or replacing the hall sensors.

💡

Regular cleaning of the rear wheel (every 3-6 months) extends the service life of bearings and braking system by 30-40%.

Reverse Assembly: nuances and tips

Wheel assembly is as important as disassembly, and here are some key points to consider:

1. Install the wheel on the axle. Before you put the wheel on, make sure that the axle is clean and has a fine lubrication (e.g., Litol-24) that will prevent corrosion and facilitate future disassembly. The wheel should fit on the axle without distortion.
2. Twisting bolts. Tighten the bolts cross-to-cross to avoid axle skewing. First, twist them by hand, then pull them up with a key. Don't forget to force 6-8 Nm!
3. Connect the engine connector. Make sure the connector sits before you click. If the contacts are oxidized, clean them with alcohol. Check if the wires are twisted, they should lie loose, without tension.
4. Install the brake caliper. Before tightening the caliper bolts, press the brake lever several times to allow the pistons to enter the working position. Rotate the caliper bolts with a force of 4-5 Nm.

After assembly, be sure to check:

• 🔄 The wheel should rotate freely, without touching the frame or brake pads.
• 🛑 The brake should be triggered smoothly, without creaking or jerking.
• ⚡ When the scooter is turned on, no errors should appear on the display (for example, E05 — engine).

⚠️ Warning: If the scooter is not driving or makes uncharacteristic sounds (screaming, knocking), immediately stop operation and double-check all connections.

When do you call the service?

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

• ⚡ Short circuit in the engine - if there are sparks when connecting the connector or the controller protection is triggered.
• 🔧 Wear or damage to the thread in the frame - it is almost impossible to restore it without special equipment.
• 🔄 Failure of hall sensors – requires soldering work and fine-tuning.
• 🛠️ Replacing bearings in the engine-sleeve is a time-consuming process and requires a press to press new bearings.

The cost of repair in the service depends on the nature of the breakdown:

If you’re not confident but want to save money, many services offer partial self-repair: you can take the wheel off and bring it to the workshop, where specialists will do the rest of the work (such as replacing bearings or repairing the engine), which will cost 20-30% less.

FAQ: Frequent questions about Xiaomi’s rear wheel M365 Pro