Inspection

INSPECTION

PULLEY





1. Set the special tool MB992226 to the pulley.
2. Fix the special tool MB992226, with the glasses wrench to prevent the rotor shaft from rotating.
3. Lock the pulley when rotating it clockwise. Check that the pulley rotates smoothly when rotating it counterclockwise.

CAUTION:
Locking the one-way clutch might cause the damaged drive belt and an abnormal noise.

ROTOR





1. Measure the resistance between the two slip rings of the rotor coil to check the continuity between them.
Replace the rotor if the resistance is not within the standard value range.
Standard value: 2.0 - 2.3ohms






2. Check the continuity between the slip rings and core.
If continuity is present, replace the rotor.

STATOR





1. Check the electrical continuity between the stator coil terminals.
2. Check the electrical continuity of the points shown in the table below.Confirm that there is electrical continuity.
If there is not, replace the stator.










3. Check the insulation between the stator coil terminal and the core.
4. Check the electrical continuity of the points shown in the table below. Confirm that there is not electrical continuity.
If there is, replace the stator.










5. Check the insulation between coil terminals of each group.
6. Check the electrical continuity of the points shown in the table below. Confirm that there is not electrical continuity.
If there is, replace the stator.






RECTIFIER ASSEMBLY





Use the analog type tester to make sure the electrical continuity of each diode meets the table.
Unless the electrical continuity of each diode meets the table, replace the rectifier.






BRUSH





1. Measure the length of the protrusion of the brush. Replace the brush if the protrusion length is shorter than the limit.
Limit: 2 mm (0.1 inch) minimum
2. Unsolder the lead of the brush. The brush will come out, becoming ready for removal.





3. Install a new brush by pushing it into the holder as shown in the drawing and soldering the lead.