150
MOTOR
9
Troubleshooting
9- 4.
1. Check Oil seal for wear and damage.
If worn or damaged, replace it.
1. Check permanent magnets in the Yoke for damage
and sticking metallic dust.
If sticking metallic dust, remove it with compressed air.
If damaged, replace the whole motor.
Oil seal
4
1
Permanent magnet
4
2
9-3-6. Oil seal and permanent magnet(EPS motor)
- inspection and replacement
9-4-1. Motor - troubleshooting
NO.
symptom
Problem
Solution
1
Abnormal noise
1. Damage of bearing
Replace
2. Armature shaft is not centered
Repair /
replace
2
Abnormal
temperature rising.
1. Improper rotating
Replace
3
Abnormal noise or
temperature rise
after installing
1. Wear of serration of Armature shaft or coupling
Replace
2. Out of adjustment or wear of gears or faulty
bearings in Drive unit
Replace
4
The motor does
not rotate normally.
1. Damage of sensor bearing
Replace
2. Poor contact of wires or connectors of the speed
sensor.
Repair
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