Common faults and diagnosis of starters
2025-05-13
Starter motor not turning
Possible causes: Insufficient battery power, solenoid switch malfunction, internal motor circuit break, etc.
Diagnostic methods: Check battery voltage, solenoid switch coil resistance, and whether the motor windings are open-circuited.
Starter motor weak
Possible causes: Insufficient battery power, brush wear, poor commutator contact, etc.
Diagnostic methods: Check battery voltage, brush length, and whether the commutator surface is smooth.
Starter motor spinning freely
Possible causes: One-way clutch slippage, wear of drive gear and flywheel ring gear, etc.
Diagnostic methods: Check for one-way clutch slippage and wear of the drive gear and flywheel ring gear.
Starter motor makes unusual noise
Possible causes: One-way clutch damage, poor meshing of drive gear and flywheel ring gear, etc.
Diagnostic methods: Check for one-way clutch damage and whether the drive gear and flywheel ring gear mesh properly.
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Maintenance and Care of Starters
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