小牛电动
Niu Electric
- 34 -
Preparation
Operation notes
There should be no oil stains on the brake disc.
Generally the rear wheel and suspension are supported with a safety support or a safety crane during
their maintenance.
Please use original components made by Niu to replace bolts and nuts on the suspension pivot and also
at the installation position.
Preparation reference
Item
Standard value (mm)
Usability limit (mm)
Motor
oscillation
Vertical
2.0
Lateral
2.0
Tightening torque
Self-locking nuts on the motor
60-80
N•m
Top bolts on the rear shock absorber
37 - 44
N•m
Bottom bolts on the rear shock absorber
22 - 29 N
•
m
Failure diagnosis
Oscillation of the rear wheel
Deformation of the motor rim
Motor failure
Motor un-tightned
Bearing loosened or worn
Insufficient tyre pressure
Shock absorber softened excessively
Insufficient spring elasticity
Oil leakage from shock absorber
No elasticity of the rear shock absorber spring
Extremely low tyre pressure
Shock absorber hardened excessively
Shock absorber rod deflected
Extremely high tyre pressure
Abnormal noise from the rear suspension
Rear suspension liner thinned and softened
Failure of the rear shock absorber
Motor
Disassembling:
Remove lock nuts from the motor.
Remove motor connection wires.
Summary of Contents for N1S
Page 12: ...Niu Electric 9 Scooter body scooter body panel...
Page 101: ...Niu Electric 98...
