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Alternator: common defects and their signs

Breakage or closing of stator winding
- The alternator battery check indicator doesn’t turn off.
- Excessive noise from the alternator working.
- The battery discharges quickly.
Wear out of brushes.
- There’s no battery charge.
- Lights are dim or constantly blinking.
- Troubles in voltage supply appear.
Damage of voltage regulator.
- The battery charge check indicator doesn’t turn on when ignition is on.
- The battery charge check indicator doesn’t turn off at engine rpm increasing.
- Overcharge of the battery.
- Increased voltage level in the car mains.
- All lights of the car blow out.

How to replace alternator?

Car manufacturers recommend to perform full component replacement. You can replace the component yourself with the help of a combination spanner and socket wrench set, as well as a crowbar. To demount the component you should do the following:

Disconnect the negative wire clamp from the battery .
Disconnect all the wires and sockets from the alternator.
Loosen the drive belt.
Remove the drive belt, unscrew the fastening attaching the alternator to the unit. Demount the alternator.
Install a new component and mount the elements in reverse order.

Electric system Car parts: