Inner components
1
Motor housing / outer cover
2
Rotor
3
Permanent magnets
4
Stator
5
Copper windings
6
Motor shaft
7
Bearings
8
Hall sensor board
9
Temperature sensor
10
Phase wires
11
Rear cover
12
Cooling / heat dissipation structure
Diagnostic tips
1
Check U, V and W phase resistance and balance.
2
Inspect Hall sensor signals and connector condition.
3
Check bearing noise, play and mechanical resistance.
4
Inspect motor winding insulation and signs of overheating.
5
Check for water ingress and corrosion.
6
Compare motor temperature during operation with normal operating conditions.
