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7.3.2 Disassembly
Disassemble housing screw, front cover, motor
housing and other parts.
7.3.3 Inspection
Inspect other component assemblies.
Replace with a new one when there is surface partial
friction, injuries or burning loss.
Commutator shall be cleaned when there is metal
particles adhered to its surface.
Inspect continuity between contact surfaces of
other assemblies.
Confirm uncontinuity of armature shaft among
surfaces of commutator.
Inspect continuity of starter motor housing.
Confirm uncontinuity between conducting terminal
and starter motor housing.
Inspect continuity between conducting terminal and brush.
Replace it with a new one if abnormality exits.
Inspect carbon brush holder for continuity. If there is continuity, replace it.
Measure carbon brush length
Service limit: replace it when it is shorter than 8.5mm
Check rotation smoothness of the needle bearing in the front cover and whether it is loosened
when it is pressed in.
If there is abnormality, replace it with a new one.
Check whether the oil seal is worn or damaged.
7.3.4 Assembly
Apply lubricating grease on the oil seal in the front cover.
Install brush onto the carbon brush holder.
Apply lubricating grease on movable parts at both ends of brush shaft.
Press carbon brush into its holder and install front cover of motor.
* Attentions
•
There should be no hurt on the contact
surface of carbon brush and armature. Take
care.
•
Installation shaft of armature cannot hurt
lip of oil seal. Take care.
电刷
电刷
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