How to remove the wheel from the electric scooter Xiaomi Electric Scooter 1S: nuanced

Electric scooter Xiaomi Electric Scooter 1S — It's a popular model among urban users, but even with such a reliable device, tires can wear out over time, bend the rim or fail bearings. Dismounting the wheel is the first and mandatory procedure for any repair, but many owners face difficulties: Sour bolts, a strange mounting scheme or fear of damaging electronics. In this article, we will analyze the step-by-step algorithm for removing the wheel, taking into account the design features of the wheel. 1S-version, which differs from the base model by a reinforced brake mechanism and a modified plug.

It is important to understand that the front and rear wheels are removed differently: the rear is connected to the motor and requires care when working with wires, and the front often “fits” due to dirt in the axle. We will not only show the sequence of actions, but also point out the typical errors that lead to breakage of mounts or cables. For example, many try to unscrew the axle nut without removing the brake disc – this is guaranteed to deform the rotor.

If you've never done a repair, don't worry: the manual is for beginners, and the main thing is to follow the logic of the process and take your time. For clarity, a comparative table of tools for the front and rear wheels was presented, and a unique life hack was added to remove the boiling nut without a hiccup. WD-40, It works 90 percent of the time. Let's start with the preparation!

What tools will be needed: minimum and extended set

A common mistake is to try to get by with "what's at hand." - Xiaomi 1S It's critical to use tools of the right size, or you risk ripping off the bolt edges or damaging the thread:

• 🔧 14 mm end key (preferably with a rattle) for the nut of the rear wheel axis. Attention: the head must be thin-walled to fit between the fork and the disc.
• 🔧 Hexagon 5 mm - for unscrewing brake pads (if they interfere with dismantling).
• 🔧 Flat screwdriver - for tweaking plastic covers and cable fixers.
• 🔧 Hammer and wooden bar - for neat knocking out the axis (only in extreme cases!).
• 🔧 Plastic screeds - to fix the motor wires when removing the rear wheel.
• 🔧 Lubricant WD-40 or analogue - for processing acidic threaded joints.

Extended set (optional, but will simplify the work):

• 🔧 Dynamometer key (axle tightening moment - 40-50 Nm). You can do without it, but the risk of pulling the nut increases.
• 🔧 Removal of bearings – if you plan to replace them.
• 🔧 Multimeter – to check the integrity of the wiring of the motor after dismantling.

⚠️ Warning: Never use a gas key instead of a face-on - it deforms the axis nut and you'll have to buy a new one. Also avoid percussion tools (such as a pneumoguester) - they can damage bearings or threads in the fork.

Electric scooter preparation: what to do before dismantling

Before you take up the tools, turn off the scooter - this will prevent short circuits when the wires are accidentally hit. 1S for:

1. Turn off the scooter with a long press on the power button (5 seconds).
2. Disconnect the battery: unscrew 4 screws on the bottom cover (cross screwdriver) and turn off the BMS connector (battery management system).
3. If you remove the rear wheel - remove the plastic protection of the engine (it is mounted on 2 latches).

Check the wheel for additional mounts:

• 🔍 Check if the brake disc blocks access to the axle nut (on the rear wheel).
• 🔍 Make sure there are no additional locking rings or splints (on the 1S They are usually not available, but there are exceptions after repairs).
• 🔍 If the wheel has been used recently, let it cool down – the heated metal expands and the nut will be harder to unscrew.

Take a picture of the original position of all the details, especially:

• 📸 Location of brake pads relative to the disc.
• 📸 Marking on the motor wires (if you remove the rear wheel).
• 📸 Order of washers and axle pads.

⚠️ Attention: On Xiaomi 1S The back wheel is connected to the speed sensor, and if you accidentally pull the wires, the sensor can come off the board, and it will cause an error. E02 Fix the cables with plastic screeds!

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If the axis nut fails, do not apply excessive force - first process the thread. WD-40 And wait 10 to 15 minutes, and 80 percent of the time, that's enough to avoid breaking the line.

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

Front wheel on Xiaomi 1S It's easier to shoot than the back, but it has its own nuances, so you don't have to damage the brakes or lose any small parts (like the locking ring:

Step 1 Removing brake pads

The brake caliper prevents the dismantling, so first unscrew the two bolts of the pad attachment (a 5 mm hexagon). You don't have to remove the caliper completely - just open the pads so that they don't cling to the disc. Put them on a clean surface so that you don't lose the springs.

Step 2: Axis removal

Front wheel axle nut on 1S It's often clumsy because it gets moisture, to unscrew it:

1. Handle the thread WD-40 and wait 5-10 minutes.
2. Put the end key on 14 mm and try to turn counterclockwise. If it doesn't, don't pull!
3. When the nut is moved from the place, unscrew it to the end manually.

Step 3: Remove the wheel

Once the nut is unscrewed, the wheel may not be removed due to corrosion on the axle. Carefully wobble it from side to side, while pulling it on yourself.

• 🔨 Take a wooden bar and a hammer, with light blows knock on the axis from the inside of the fork.
• 🛠️ Don’t hit the bearings – it will deform them!

When the wheel is removed, check the axle for rust or wear. If there are bullies, clean them with fine sandpaper before installing the new wheel.

Removal of the rear wheel: work with the motor and wires

The back wheel on Xiaomi 1S — It's not just the mechanical part, it's also the electrical part (motor, speed sensor), and it's important not to damage the wires, not to lose the washers that are responsible for the centering of the wheel:

Step 1. Unconnect the motor wires

Before you unscrew the axle nut, disconnect the motor and speed sensor connectors, which are placed under plastic protection (you can remove it by screwdriver two lockers), connectors are usually of different shapes, so it is difficult to confuse them, but it is better to mark:

• 🔌 Thick connector (3 wires) - motor power.
• 🔌 Thin connector (4 wires) - Hall sensor (speeds).

Step 2: Dismount brake disc

Nana 1S The rear wheel brake disc is attached to the hub of the motor with six bolts under a hexagon of 4 mm. They must be unscrewed before the axle nut is removed, otherwise the disc will bend. Bolts often stick — use it. WD-40 And don't use excessive force.

Step 3: Unscrewing the axis nut

The rear wheel nut is tightened with a large torque (about 40-50 N·m), so:

1. Lock the wheel, resting it in the floor or clamping it in the vise (through soft pads!).
2. Put the end key on 14 mm and try to pull the nut. If you can't, use a lever (like a pipe), but without fanaticism.
3. After unscrewing the nuts, remove the washers and remember their order - they are responsible for the gap between the motor and the fork.

Step 4: Remove the wheel from the fork

The wheel can sit tight because of the motor magnets, and gently swing it from side to side, while pulling it over yourself.

• 🔧 Check if there are any untwisted bolts left (for example, speed sensor mounts).
• 🔧 Use a removable or two mounting crowbars to evenly press the hub.

⚠️ Attention: On Xiaomi 1S The rear wheel hub has a Hall sensor attached to the engine with two small screws, so when you remove the wheel, don't pull the sensor wires, they're thin and they break easily!

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If after removing the wheel on the axle there are traces of rust or bullying, be sure to clean them before installing a new wheel. Otherwise, the new nut will not be tightened with the right moment, which will lead to backlash or breakage of bearings.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when removing wheels from Xiaomi 1S. Here are the most common ones and ways to prevent them:

Another common problem is that bearings are jammed after improper dismantling.

• 🔴 You hit the hammer right on the hub (blows are transmitted to bearings).
• 🔴 The wheel was removed with a skew, because of which the bearing balls deformed.
• 🔴 The bearings got dirt or moisture (for example, if the scooter was washed before repair).

If the wheel turns tight after assembly or you hear a crunch, the bearings are probably damaged. 1S bearings 6004-2RS (front wheel) and 6005-2RS (posterior).

How to put the wheel back: nuances and moments of tightening

Installing the wheel is as much a process as dismantling.

1. Observe the order of the washers (especially on the rear wheel, where they center the motor).
2. Correctly tighten the nut of the axis - overtraction leads to wear of bearings, undertraction - to backlash.
3. Check the brakes and speed sensor before the first trip.

The order of assembly of the front wheel:

1. Put the wheel on the fork axis, making sure the bearings sit smoothly.
2. Set the washers in reverse order (first metal, then plastic).
3. Tighten the axis nut with a moment of 30–35 Nm (or “tight, but without fanaticism”).
4. Install brake pads and caliper, adjust the gap between the pads and the disc (should be 0.3-0.5 mm).

Rear wheel assembly procedure:

1. Connect the speed sensor and motor connectors (make sure the contacts are clean).
2. Put the wheel on the axle, combining the holes under the bolts of the brake disc.
3. Set washers: first metal (from the motor side), then plastic (from the nut side).
4. Tighten the axis nut at 40–50 Nm. Important: on Xiaomi 1S the back nut has a left thread (unwinds clockwise, twists against the)!
5. Shut the brake disc (bolts tighten cross-cross, the moment is 5-7 N·m).

After assembly:

• 🔧 Check the wheel back – it should be missing.
• 🔧 Turn the wheel with your hand - it should spin smoothly, without jamming.
• 🔧 Turn on the scooter and check if the error is burning. E02 (speed-sensor).

⚠️ Warning: If the scooter is not driving or twitching after the rear wheel is assembled, you may have confused the phases of the motor (incorrectly connected the connector.

When to contact the service: signs of serious problems

Not all breakdowns can be repaired on their own, but here are some cases where you can trust the professionals:

• 🚨 Breaking the wires of the motor or speed sensor - soldering and multimeter check are required.
• 🚨 Cracking in a fork or axle - the scooter becomes dangerous for driving.
• 🚨 Motor jamming (wheel does not rotate even when power is turned off) - possible failure of the gearbox or rotor.
• 🚨 Persistent error E02 after checking the sensor connection - the controller board may be faulty.

You should also contact the service if:

• You can't unscrew the axis nut despite use WD-40 And the sleeves (maybe the sleeves were slacked).
• After replacing the bearings, the wheel warms up stronger than usual - this is a sign of improper alignment or bracing.
• The brake caliper is jammed in a compressed position - self-repair is fraught with loss of braking efficiency.

Cost of repair in the service for Xiaomi 1S:

If you decide to repair the scooter yourself, but something went wrong, do not continue — the failure can become critical. For example, an improperly assembled engine can burn after 10 minutes, and a poorly secured wheel can fall off on the go.

FAQ: Frequent questions about removing wheels from Xiaomi 1S