niu N-GT, Service Manual

Page: 37 / 144

V1.0.0 37
Front Wheel
Failure diagnosis
The tire pressure is too low.
There is air leakage from the tire.
The tire pressure is insufficient.
The front axle is deflected.
The front wheel tire is deformed and the tire is deflected.
The front wheel oscillates.
The wheel is deformed.
The front axle bearing becomes loosened.
The tire is deteriorated.
The wheel is difficult to turn.
The axle bearing failed or the braking is bad.
The front axle is deflected.
The front brake is applied.
Inspection
Inspection of the rim oscillation
•
Place the wheel on a precise support.
•
Check the rim oscillation.
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Manually turn the wheel to read the oscillation value.
Inspection of the front wheel bearing
•
Remove the front axle and front brake disc.
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Remove outer spacer on the front wheel, and then remove the front wheel oil-seal.
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Remove the bearing.
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Remove the intermediate spacer.
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Check the bearing rotation.
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The bearing that does not rotate is worn or loosened. Replace it with a new one.
Disassembling
Coming soon…