How to remove the rear wheel Xiaomi: full instructions for repair

Xiaomi’s electric scooters have gained popularity due to their reliability and availability, but active operation inevitably leads to wear and tear of the chassis. Most often, owners face the need to pump or replace the camera, eliminate the sleeve backlashes or maintain the brake system, which requires dismantling the rear wheel. This process seems difficult for beginners, but with the right tools and a clear algorithm of actions, the procedure takes no more than 30-40 minutes. The key is to comply with safety, since the work involves electrical components and high pressure in the tires.

Before disassembling, make sure the scooter is off and the battery is discharged below 3 volts per cell or completely disconnected from the controller, if possible. Removing the wheel is required not only for puncture repair, but also for lubricating bearings, replacing the stop light or adjusting the brake disc gap. In this guide, we will discuss all the steps of dismantling on the M365, Pro, Pro 2 and their analogues, paying attention to the nuances that are often silent in service centers.

⚠️ Warning: Before starting work, be sure to disconnect the motor-wheel connector from the controller inside the deck. Attempting to rotate the wheel when power is connected can cause the engine driver or controller to burn due to the generation of reverse current.

To successfully complete the task, you will need a set of tools that you prefer to prepare in advance so as not to interrupt in the process. The main element is a hexagonal key of 8 mm (sometimes 6 mm depending on the modification of the bolts), as well as a specialized detachment for the hub lid, which can be made yourself or purchased, gloves to protect the hands from lubrication and sharp edge of the rim, and a container for small parts.

Tools and workplace preparation required

Well-designed workplaces are 50 percent of the success of the whole event. You need a flat, well-lit surface where you can put the parts in order to remove them, so you don't lose anything. You need to pay special attention to cleanliness: getting sand or metal shavings inside the motor wheel or on the brake disc can negate all repair efforts. Organizing the space will avoid chaos and damage to small components.

The basic toolkit includes not only keys, but also auxiliary devices that facilitate dismantling. Often the wheel mount bolts sour or crumple due to vibrations and moisture, so having a penetrating lubricant (such as WD-40) and a rubber head hammer will be extremely useful. For models with a rear shock absorber, it may require screed springs or the help of a second person to hold the frame in the desired position.

• 🔧 Set of hexagonal keys (basic dimensions 4, 5, 6, 8 mm) for unscrewing fastener bolts of the frame and caliper.
• 🛠 Special lifter of the motor-wheel cover or a durable metal plate with holes under the bolts for fixing the hub.
• 🧤 Protective gloves with a corrugated surface for reliable grip of slippery metal parts and protection from cuts.

⚠️ Warning: Do not use an impact screw to unscrew wheel mount bolts on models with aluminum sleeve.High torque can break the thread in soft metal or damage the engine shaft, which will lead to expensive repairs.

It is also important to prepare a place to dispose of an old camera if it has fallen into disrepair and have a new tire or camera of the appropriate size on hand.The standard size for most Xiaomi models is 8.5 inches, however, in recent years there have been modifications with tubeless 10 inch tires that require a different approach.

Dismantling the wheel: step-by-step instructions

The process of removing the rear wheel begins with the release of space around the axle. The first step is to unscrew the bolts that attach the brake caliper to the frame or fork. Carefully remove the caliper and hang it on a wire or clamps so that it does not hang on the brake hose, creating tension, and this will prevent suffocation of the brake system and damage to the hydraulic line.

Then you have to disconnect the power connector of the motor-wheel, which is usually inside the deck under the protective cover. After disconnecting the cable, you can start unscrewing the central nut or axle bolts. Some models use a through-axle, which you need to knock out with neat blows of the hammer through the embroidery, previously lubricating the connection with penetrating fluid.

When working with the axis, there is often a problem of slime faces or heavy oxidation of the metal. In such cases, it is recommended to use the method of tapping the axis on both sides alternately, gradually increasing the force. If the axis does not come out, you can apply local heating of the connection area (with caution not to damage the insulation of the wires and plastic elements), which will expand the metal and facilitate the extraction. After the axis is released, the wheel is removed down, freeing access to the internal components.

Camera replacement and tire maintenance

When you remove the wheel from the frame of the scooter, you start to work with the rubber. If you have a camera installed, the first thing you need to do is to completely flush the air by twisting the nipple spool out of the rim. To remove the tire from the rim, use special plastic blades to avoid damaging the metal and tearing the new chamber when you reassemble. The movements should be progressive, gradually pushing the side of the tire outside the rim in a circle.

When removing an old camera, carefully examine the inside of the tire for foreign objects, such as glass, nails or sharp stones, which could cause a puncture. The purity of the inner cavity of the tire is the key to the long service of the new camera. Also check the condition of the nipple in the rim: it should sit tightly and have no cracks through which air can poison.

The new camera is installed in reverse order: first, the nipple is refueled into the rim hole, then the camera is carefully straightened inside the tire. When putting the tire on the rim, make sure that the camera does not fall under the side of the rubber, otherwise it will be compressed and burst. After assembly, pump the wheel to operating pressure (usually 45-50 PSI) and check the tightness of the joints with soap solution.

Repair of the sleeve and bearing maintenance

The back wheel of an electric scooter is a motor wheel, inside which are magnets and windings, as well as bearings that allow free running. Over time, moisture and dirt enter the bearings, which leads to a backlash, noise or hum when driving. To maintain, you need to remove the hub lid, which is often the most difficult step due to dense landing and the use of a carving fixture in the factory.

The lid is removed by a special removable that clings to bolt holes on the end of the hub. If there is no removable, the craftsmen use a metal plate to fasten it to the hub and create a focal point to knock the lid out. The uniformity of the force in knocking out is critical: skewing can lead to a bite on the lid or damage to the engine shaft. Once the lid is removed, the bearings and phase wire contacts are accessed.

• 🧹 Clean the engine’s interior from old lubricant, metal dust and brush wear products (if applicable).
• 🛢 Replace bearings with new bearings marked 6004 ZZ or 6004 2RS, Preheat them for a better landing.
• 🔌 Check the integrity of the insulation of the wires running from the winding to the terminals, if necessary, re-insulate with thermal shrinkage.

⚠️ Note: When assembling a motor wheel, it is strictly forbidden to use ordinary lithium bearing lubricant, which can flow out when heated and fall on the winding or magnets, which will lead to dust sticking and overheating of the engine. Use only heat-resistant lubricants for high-speed bearings.

Adjustment and installation of the brake disc

The brake disc on the rear wheel Xiaomi is mounted on six bolts and requires precise alignment during installation. the Luft disk or its beat can cause unpleasant creaking, vibration on the steering wheel and uneven wear of brake pads. Before installing the wheel in place, it is recommended to wipe the disk with a degreaser and check its geometry, putting it on a flat surface.

When mounting the wheel, it is important to position the disc correctly relative to the caliper. If after installation there is friction of the pads against the disc even with the released brake, you need to carry out a centering procedure. To do this, the caliper mounting bolts are weakened, the brake is compressed several times (by pressing the lever on the steering wheel) and, holding the lever tightened, the caliper bolts are tightened, this allows the caliper to stand in a perfect position relative to the disc.

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Use a dynamometer key to tighten the bolts of the brake disc. A tightening can cause the disc to deform, and a short spin can cause it to shift or lose when driving actively.

In mechanically braked models, it is also worth checking the cable for stretching and contaminants. When the wheel is removed, it is convenient to lubricate the cable with graphite lubrication and check its free passage inside the shirt. If the cable has damage to the outer braid or internal tears has lived, it should be replaced, since the safety of the driver directly depends on the reliability of the brake system.

Assembly of the node and final inspection

The assembly is done in reverse disassembly. Place the wheel in place with the slats or guides into the frame landing holes. Insert the axle or twist the mounting bolt, but do not tighten it completely "to the end." This is necessary for the wheel to take the correct position relative to the frame and brake caliper. Only then you can make the final puff with the recommended force.

Connect the motor-wheel connector to the controller, making sure that the keys of the connector match and the characteristic snap of the lock. Lay the wires inside the deck so that they do not rub against moving parts and do not clamped with the lid. Testing includes scrolling the wheel with your hand (it should rotate freely, without jamming) and test brake pressing.

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A properly installed wheel should not have a backlash to the sides, and the brake disc should be located strictly in the center of the caliper without contact with the pads in a free state.

After assembly, make sure to run a test run in a safe place, check the stop light, no extraneous noise during acceleration and braking, and the stability of the scooter on the straight. If all parameters are normal, you can consider the repair completed. Regular maintenance of the chassis will prolong the life of your electric scooter and ensure a comfortable ride.