Joyor S10-S-Z · Motors
Grinding, clicking or rough wheel
A grinding wheel is usually something caught in it, a rubbing brake, or a worn bearing.
Is this your problem?
- Grinding or clicking that follows wheel speed
- Wheel feels rough when spun by hand
- E-08 or E-18 (motor stall) on the display
Likely causes
Switch off, lift the wheel and spin it by hand. Listen and feel.
What you need
Tools
Example photoOr your phone light. You need to see into the deck and connectors.
Photo: KMJ, CC BY-SA 3.0, resized
Example photoA clean microfibre cloth or paper towel. Never one that has had oil or polish on it for brake work.
Photo: Polyesterchen, Public domain, resized
Example photoA metric set, roughly 2 mm to 8 mm. Long-arm keys reach the recessed bolts on the stem and deck.
Photo: Leon Brooks, Public domain, resizedParts
Example photoOnly if a bearing is rough. The bearing number is printed on its side (for example 6203): match it exactly.
Photo: R. Henrik Nilsson, CC BY 4.0, resizedPhotos show the kind of tool or part, not a specific product. We don’t sell anything and get nothing from any shop.
Step by step
Tap a step when it’s done to keep your place.
- Clear the axle area
Pull out anything wound around the axle or trapped in the rocker arm.
- Rule out the brake
Watch the disc and pads while spinning. Fix any rub first.
- Check for play
Hold the tyre top and bottom and rock it. A clunk means loose axle nuts (tighten) or worn bearings.
- Bearings are a shop job on hub motors
Replacing hub-motor bearings means opening the motor. Possible, but a shop with a bearing puller does it much faster and without damaging the magnets.
Stay safe
- A grinding motor that also gets hot must not be ridden.
When to take it to a shop
Bearing replacement, or grinding from inside the motor.